EP3871743A1 - Front retaining device of a binding of a glideboard - Google Patents

Abstract

The invention relates to a stop (1) for fixing a boot (2) on a gliding board (3) comprising: - a frame (11) having a lower face (111) configured to be integral with the board slide (3), - a body (12) movably mounted on the frame (11), - a sole clamp (13) movably mounted on the body (12) and able to come into contact with an upper surface (211) and at least one lateral part (212) of a front or rear part of the boot (2) when the boot (2) is in engagement with the binding, - a lateral release mechanism (14) comprising at least a first means elastic (141) acting on the sole clamp (13) to bring it back into a configuration of engagement with the boot (2), - a vertical holding mechanism (15) comprising a second elastic means (151), separate from the first elastic means (141), arranged so as to continuously exert a return force (Fr1a, Fr1b) on the body (12) to bring back the sole clamp (13) towards the lower face (111) of the frame (11), this return force producing a plating force (Fp) of the sole clamp (13) on the shoe (2) when the shoe (2) is in engagement with the binding , characterized in that the stopper (1) comprises at least one cam (153, 154), kinematically interposed between the second elastic means (151) and one of the frame (11) and the body (12), the cam (153, 154) being shaped to modify, depending on the position of the body (12) relative to the frame (11), the direction of the return force (Fr1a, Fr1b) exerted by the second elastic means (151) on the body (12) so as to attenuate a variation in the plating force (Fp) when the sole clamp (13) is moved away from the lower face (111) of the frame (11).

Description

TECHNICAL AREA

The present invention relates to the field of shoe bindings on a gliding board. It relates more particularly to a fixing stop, as well as a binding or a gliding board equipped with such a stop. It finds a particularly advantageous application in the field of skiing.

STATE OF THE ART

A binding of a boot on a gliding board, such as a ski or a snowboard generally comprises a front retention device, called a front stopper, and a rear retention device, called a rear stopper or “heel piece”. The boot is inserted between the front stop and the heel piece, these elements being fixed to the gliding board. The toe piece and the heel piece are each equipped with stopping means acting on the boot so as to block the movement of the boot relative to the gliding board in the three longitudinal, vertical and transverse directions. Thus, the joint action of these two retaining devices makes it possible to secure the boot with the gliding board, when the boot is in engagement with the binding.

There are different solutions for making a toe piece or a heel piece. For example, documents EP-A-0 241 360 , EP-A-1 151 765 and EP-A-2 174 695 describe different embodiments of stops. In these illustrations, the front stop incorporates a sole clamp comprising two wings forming a “V”, the branches of which partially cover a front extension of the boot, in a vertical direction. Furthermore, the sole of the boot, that is to say the underside of the boot, rests on a support plate fixed to the gliding board. Consequently, the vertical immobilization of the boot at the level of the stopper is achieved by a double contact between, on the one hand, the upper face of the front extension of the shoe and the wings of the stopper and, on the other hand part, the sole of the shoe and the backing plate.

For safety reasons, the toe piece and the heel piece often incorporate a safety mechanism allowing the binding to be triggered if necessary. This mechanism allows the release of the user's foot to avoid injuring the latter during an accidental transverse and / or vertical movement of his foot. This may be during a fall or in general, to prevent the latter from injuring itself when the forces exerted on the boot exceed predetermined values. Safety mechanisms for the stop are also described in the documents cited above.

Regarding ski boots, there are several types, including boots for downhill skiing and boots for ski touring. These two categories of footwear are characterized by the standards NF ISO 5355 and NF ISO 9523, respectively. These categories are distinguished in particular by the dimensions of the parts making the interface with the elements of the binding. The dimensions of the interface portions vary from category to category and, therefore, bindings are generally designed or configurable to accommodate a single category of shoe.

Some front stops include a mechanism for elastic adjustment of the height, or vertical positioning, of their wings. This elastic means serves to compensate for small dimensional variations linked to the tolerances of the production of a shoe of the same category. However, these stops do not allow sufficient height adjustment to make the binding compatible automatically (without user adjustment) with alpine ski boots and with ski touring boots.

Likewise, there are bindings in which the support plate serving as an interface with the sole of the shoe is mounted on an elastic means in order to compensate for the dimensional variations intrinsic to a particular category of shoe. These stops also do not make it possible to make the binding compatible automatically (without user adjustment) with alpine ski boots and with ski touring boots.

Other stops are divided into two parts, the part integrating the wings being adjustable in height, via an adjustment screw, relative to the other part fixed to the ski. This type of stop allows the binding to be configured alternately for alpine ski boots and for ski touring boots. However, this type of stopper is complex, expensive and is hardly compatible with a mechanism making it possible to make up for the dimensional variations intrinsic to a category. This design does not cover large dimensional variations. In addition, adjusting the height of the wings to be compatible with a category of shoe is not easy because the adjustment is done continuously and without mark, by screwing the screw. It is therefore not easy to correctly adjust the height of the wings for a particular category of shoe. In addition, this type of adjustment to adapt to a category of shoe is not convenient for the user because it is necessary to move the part integrating the wings over a long stroke which involves several turns of the screwdriver.

Alternatively, other stops, also in two parts, make it possible to modify the vertical position of the support plate with respect to the part integrating the wings. The drawbacks are similar to the previous constructions where it is the part integrating the wings which is mobile.

For these two-part stops, the adjustment is generally done with the shoes and often in several operations to adjust the tightness.

An object of the present invention is therefore to provide a solution, simple and reliable to use, for making the binding compatible automatically, without user adjustment, with shoes having different dimensions concerning their interface with the binding.

Another object of the present invention is to provide a solution, simple and reliable to use, to allow the use on the same binding of alpine ski boots and ski touring boots.

Another object of the invention is to provide a binding that is automatically compatible with several categories of shoe without significantly disturbing the operation of the lateral release mechanism.

The other objects, features and advantages of the present invention will become apparent on examination of the following description and the accompanying drawings. It is understood that other advantages can be incorporated.

ABSTRACT

• un châssis qui présente une interface, typiquement une face inférieure, configurée pour être solidaire de la planche de glisse,
• un corps monté mobile sur le châssis,
• un serre-semelle monté mobile sur le corps et apte à venir en contact avec une surface supérieure et au moins une partie latérale d'une partie avant ou arrière de la chaussure lorsque la chaussure est en prise avec la fixation,
• un mécanisme de déclenchement latéral comprenant au moins un premier moyen élastique agissant sur le serre-semelle pour le ramener dans une configuration d'engagement avec la chaussure,
• un mécanisme de maintien vertical comprenant un deuxième moyen élastique, distinct du premier moyen élastique, agencé de manière à exercer continuellement un effort de rappel sur le corps pour ramener le serre-semelle vers la face inférieure du châssis, cet effort de rappel produisant un effort de placage du serre-semelle sur la chaussure lorsque la chaussure est en prise avec la fixation.

To achieve this objective, according to one embodiment there is provided a stopper, for example a front stopper, for fixing a boot on a gliding board comprising:

• a frame which has an interface, typically a lower face, configured to be integral with the gliding board,
• a body mounted mobile on the chassis,
• a sole clamp movably mounted on the body and able to come into contact with an upper surface and at least one side part of a front or rear part of the boot when the boot is in engagement with the binding,
• a lateral release mechanism comprising at least a first elastic means acting on the sole clamp to bring it back into a configuration of engagement with the shoe,
• a vertical holding mechanism comprising a second elastic means, distinct from the first elastic means, arranged so as to continuously exert a return force on the body to bring the sole clamp back towards the underside of the frame, this return force producing a force plating of the sole clamp on the shoe when the shoe is engaged with the binding.

The stopper comprises at least one cam, kinematically interposed between the second elastic means and one of the frame and the body. The cam is shaped to modify, as a function of the position of the body relative to the frame, the direction of the return force exerted by the second elastic means on the body, so as to attenuate a variation in the plating force when the sole clamp is remote from said interface of the frame.

Thanks to this construction, the plating force exerted by the sole clamp on the boot remains controlled regardless of the dimensions of the boot part forming an interface with the binding. For example, if an interface is used having a thickness, taken in a vertical direction, greater, as is the case for ski touring boots, the cam makes it possible to control the plating force and reduce the frictional forces between the sole clamp and the boot during lateral release. This improves the reliability of the lateral release. The invention thus makes it possible to considerably improve the safety of the user of a binding with automatic configuration.

It is then possible to use, with a binding equipped with this stopper, shoes having variable dimensions of interfaces with the binding. Typically, the present invention allows the use with the same binding, alpine ski boots and ski touring boots, these two categories being distinguished in particular by the dimensions of the parts making the interface with the front stop, parts that the 'sole will be referred to hereinafter for the sake of brevity. Whatever type of shoe is used, the lateral release force remains under control.

For this type of stop where the movement of the sole clamp is energized, the distance of the sole clamp relative to the gliding board causes an increase in the compression of the second elastic means and thus causes an increase in the return force. generated by this second elastic means. In the absence of the cam, this increase in the return force would lead to a very significant increase in the plating force that the sole clamp exerts on the boot. This plating force would generate friction between the sole clamp and the boot. This friction would oppose the mobility of the sole clamp relative to the body and would thus oppose the lateral release and, ultimately, the release of the shoe. The release of the boot would therefore not be controlled and the safety of the user would be greatly degraded, in a configuration where the sole clamp would be away from the gliding board.

The claimed construction adds a cam which tends to reduce the increase in plating force as the sole clamp is moved away from the gliding board. In other words, this makes it possible, for example, to have little variation in the plating force, or at least a controlled variation, whatever the position of the sole clamp.

Depending on the configuration of the stop and in particular on the shape of the cam and the dimensioning of the second elastic means, provision can be made for the plating force to remain constant regardless of the position of the sole clamp relative to the board. of sliding. Thus, regardless of the type of shoes used, it is possible to obtain a lateral release force which remains substantially constant.

Optionally, the stopper may further have at least any one of the following features which may be taken separately or in combination.

According to one example, the body is mounted to pivot on the frame about an axis of rotation substantially transverse to a longitudinal axis of the frame, the cam being dimensioned so as to modify the direction of the return force exerted by the second elastic means. on the body so that the distance between the direction of the return force and the axis of rotation of the body differs depending on the angle of inclination of the body relative to the frame. The inclination of the body relative to the frame is measured in a vertical plane passing through the longitudinal axis of the frame.

According to one example, the axis of rotation of the body is positioned at the level of the upper part of the body, above the first elastic means of the lateral release mechanism.

According to one example, the cam and the vertical holding mechanism are shaped so that the plating force Fp does not vary by more than 20%, preferably does not vary by more than 10%, whatever the position of the greenhouse. -sole in relation to the body. This makes it possible to avoid greatly increasing the intensity of the lateral release force that must be exerted on the sole clamp, i.e. the threshold value allowing the stop to be tilted into the release configuration in order to to release the shoe.

According to one example, the second elastic means is arranged so as to act continuously on the body, regardless of the position of the sole clamp relative to the body.

According to one example, the sole clamp exerts on the first elastic means of the lateral release mechanism an action opposite to that exerted by the first elastic means on the sole clamp. The second elastic means is arranged so as to act on the body independently of the action of the sole clamp on the first elastic means of the lateral release mechanism. The movement of the sole clamp relative to the body does not act on the second elastic means. Thus, the first elastic means and the second elastic means operate independently.

According to one example, the first elastic means is configured to be alternately compressed and relaxed according to a first working axis, the second elastic means is configured to be alternately compressed and relaxed according to a second working axis, said second working axis being misaligned by report to said first line of work. According to an exemplary embodiment, the first and second working axes are contained in the same vertical plane. However, they are not parallel.

According to one example, the second elastic means acts directly on a piston capable of translating into a housing of the body, part of the piston forming a first profile of the cam.

According to one example, the sole clamp comprises two wings, each wing being mounted to pivot on the body. According to one example, each wing pivots on the body independently of the other wing.

According to one example, the cam is dimensioned so that the return torque exerted on the body, and characterized by the product of the intensity of the return force by the distance between the direction of the return force and the axis of rotation of the body, is, when the sole clamp is moved away from the gliding board, identical, to within 20%, preferably to within 10%, to this return torque when the sole clamp is close to the underside of the chassis.

• à la fois de conserver un effort de placage constant quelle que soit la chaussure utilisée lorsque l'utilisateur souhaite conserver le réglage de la valeur seuil de l'effort de déclenchement,
• et à la fois de faire varier cet effort de placage en fonction de la valeur seuil de déclenchement réglée par l'utilisateur, typiquement en augmentant l'effort de placage lorsque l'utilisateur augmente la valeur seuil de déclenchement latéral.

According to one example, the lateral release mechanism comprises an adjustment device configured to adjust a threshold value of a release force to be applied by the boot to the lateral release mechanism to cause the passage of the sole clamp. one interlock configuration to one trip configuration. According to one example, the stopper also comprises a compensation mechanism configured to exert an additional return force on the body, the intensity of the additional return force being a function of said adjustment. The plating force is then a function of the return force exerted by the second elastic means and the additional return force exerted by the compensation mechanism. According to one example, the compensation mechanism is configured to increase the clamping force when said adjustment increases the threshold value of the tripping force. Thus, if the user wishes to be more firmly held laterally, he will adjust the adjustment device in this direction. As a result, the force for placing the sole clamp on his shoe will automatically increase as well. This further improves the safety provided by the stopper. Thus, the proposed stop allows:

• at the same time to maintain a constant plating force whatever the boot used when the user wishes to keep the setting of the threshold value of the triggering force,
• and at the same time to vary this plating force as a function of the trigger threshold value set by the user, typically by increasing the plating force when the user increases the lateral trigger threshold value.

According to one example, the second elastic means is carried by the body.
According to one example, the cam has a first cam profile integral with the body rotating about the axis of rotation, and a second cam profile integral with the frame. According to one example, the first cam profile is mounted in translation on the body. According to an alternative example, the second elastic means is carried by the frame. According to one example, the cam has a first cam profile integral with the body in rotation around the axis of rotation, and a second cam profile carried by the frame and preferably being slidably mounted on the frame.

Another aspect relates to a binding for a boot on a gliding board, comprising a stopper as described above and a complementary stopper, said stopper being one of a front stopper and a heel piece and said complementary stopper being the other of a toe piece and a heel piece.

Another aspect relates to a gliding board equipped with at least one stop according to the preceding paragraphs.

BRIEF DESCRIPTION OF THE FIGURES

• [Fig. 1] La figure 1 est une vue en perspective, d'une butée selon un exemple de réalisation de la présente invention et d'une portion d'une planche de glisse équipée d'une telle butée.
• [Fig. 2] La figure 2 est une autre vue en perspective de la butée illustrée en figure 1 et d'une partie d'une chaussure.
• [Fig. 3] La figure 3 est une vue en perspective éclatée de la butée illustrée en figure 1.
• [Fig. 4] la figure 4 est une autre vue en perspective éclatée de la butée illustrée en figure 1.
• [Fig. 5] La figure 5 est une vue en coupe horizontale de la butée illustrée en figure 1.
• [Fig. 6] La figure 6 est une vue de la butée illustrée en figure 1, en coupe verticale et passant par un axe médian de la butée. La butée est représentée en position basse c'est-à-dire dans une position dans laquelle elle n'est pas sollicitée par une chaussure.
• [Fig. 7] La figure 7 correspond à la figure 6, une partie d'une première catégorie de chaussure étant illustrée en prise avec la butée.
• [Fig. 8] La figure 8 correspond à la figure 6, une partie d'une deuxième catégorie de chaussure, différente de la première catégorie de chaussure, étant illustrée en prise avec la butée.
• [Fig. 9A] La figure 9A est un graphe illustrant l'effort de placage en fonction de l'angle d'inclinaison du corps par rapport au châssis pour plusieurs valeurs de réglage du seuil de déclenchement latéral.
• [Fig. 9B] La figure 9B est un graphe illustrant l'effort de déclenchement latéral en fonction de l'angle d'inclinaison du corps par rapport au châssis pour plusieurs valeurs de réglage du seuil de déclenchement latéral.
• [Fig. 10] La figure 10 est une vue d'une butée selon un autre mode de réalisation, en coupe verticale et passant par un axe médian de la butée. La butée est représentée dans une position basse, c'est-à-dire dans une position dans laquelle elle est sollicitée par une première catégorie de chaussure.
• [Fig. 11] La figure 11 est une vue identique à celle de la figure 10, mais dans laquelle la butée est dans une position haute, c'est-à-dire dans une position dans laquelle elle est sollicitée par une deuxième catégorie de chaussure.

The aims, objects, as well as the characteristics and advantages of the invention will emerge better from the detailed description of an embodiment of the latter which is illustrated by the following accompanying drawings in which:

• [ Fig. 1 ] The figure 1 is a perspective view of a stop according to an exemplary embodiment of the present invention and of a portion of a gliding board equipped with such a stop.
• [ Fig. 2 ] The figure 2 is another perspective view of the stopper illustrated in figure 1 and part of a shoe.
• [ Fig. 3 ] The figure 3 is an exploded perspective view of the stopper illustrated in figure 1 .
• [ Fig. 4 ] the figure 4 is another exploded perspective view of the stopper shown in figure 1 .
• [ Fig. 5 ] The figure 5 is a horizontal sectional view of the stop illustrated in figure 1 .
• [ Fig. 6 ] The figure 6 is a view of the stop illustrated in figure 1 , in vertical section and passing through a median axis of the stop. The stopper is shown in the low position, that is to say in a position in which it is not requested by a shoe.
• [ Fig. 7 ] The figure 7 corresponds to the figure 6 , a part of a first category of shoe being illustrated in engagement with the stopper.
• [ Fig. 8 ] The figure 8 corresponds to the figure 6 , a part of a second category of shoe, different from the first category of shoe, being illustrated in engagement with the stopper.
• [ Fig. 9A ] The figure 9A is a graph illustrating the plating force as a function of the angle of inclination of the body relative to the chassis for several adjustment values of the lateral release threshold.
• [ Fig. 9B ] The figure 9B is a graph illustrating the lateral release force as a function of the angle of inclination of the body relative to the chassis for several adjustment values of the lateral release threshold.
• [ Fig. 10 ] The figure 10 is a view of a stop according to another embodiment, in vertical section and passing through a median axis of the stop. The stopper is shown in a low position, that is to say in a position in which it is requested by a first category of shoe.
• [ Fig. 11 ] The figure 11 is a view identical to that of the figure 10 , but in which the stopper is in a high position, that is to say in a position in which it is requested by a second category of shoe.

The drawings are given by way of example and do not limit the invention. They constitute schematic representations of principle intended to facilitate understanding of the invention and are not necessarily on the scale of practical applications.

DETAILED DESCRIPTION

In the following detailed description, use may be made of terms such as "horizontal", "vertical", "longitudinal", "transverse", "upper", "lower", "top", "bottom", "front". "," Rear "," interior "," exterior ". These terms must be interpreted relatively in relation to the normal position of the binding / boot / gliding board assembly, and the normal direction of advance of the user of the assembly. For example, the concepts “horizontal” and “longitudinal” correspond to the main direction of extension of the gliding board. The face of the gliding board intended to accommodate the binding is oriented “up” and the face of the gliding board intended to rest on the snow is oriented “down”. By way of illustration and without limitation, reference may be made hereinafter to a ski as a gliding board or to a skier as a user.

We will also use a frame whose longitudinal or 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.

Furthermore, the term “engagement” denotes the attachment of the boot to the binding and the expression “release” denotes the separation of the boot from the binding. More precisely, the “lateral release” corresponds to the release of the binding by a lateral force of the boot on the binding. In the embodiments described below, the lateral release is achieved at the level of the front stop, by a lateral displacement of the front of the boot. Typically, this lateral displacement is caused by the user falling. An engagement configuration corresponds to an engagement configuration for which the boot is engaged with the binding.

The term “release level” of the binding is understood to mean a measurement of the value of the force to be exerted by the boot on an element of the binding in order to release the boot from the binding via the release mechanism. This value can be marked on the binding in accordance with ISO 9462 or one of its editions. subsequent. It can correspond to an adjustment value or to a preset value of the associated binding. For the trigger level to be efficient, the spacing of the binding elements must be adapted to the boot intended to be engaged with the binding in order to ensure that the binding engages correctly.

By "DIN setting" or by "DIN value" when speaking of triggering, we mean the setting or the value which is fixed by a German standardization body (DIN for "Deutsches Institut für Normung"). A DIN-certified binding thus meets certain standards. Notably, all DIN certified bindings have equivalent settings. In particular, the release level of a binding of one brand set to a DIN value equal to 6 will be the same as that of a binding of another brand set to the same DIN value, if both bindings are certified. DIN.

In the remainder of the description, the term “on” does not necessarily mean “directly on”. Thus, when it is indicated that a part or a member A is resting "on" a part or a member B, this does not mean that the parts or members A and B are necessarily in direct contact with the other. These parts or bodies A and B can either be in direct contact or be in contact with one another by means of one or more other parts. It is the same for other expressions such as for example the expression "A acts on B" which can mean "A acts directly on B" or "A acts on B through one or more other parts. ".

In the context of the present patent application, the expression “kinematically intercalated between” does not necessarily mean in “contact with”. Thus, if a part A is kinematically interposed between a part B and a part C, this does not mean that A and B are necessarily in direct contact or that A and C are necessarily in direct contact. This means that a movement or a force of part B, respectively of part C, may be at least partly transmitted to part C, respectively to part B, via part A.

In the present patent application, the term mobile corresponds to a rotational movement or to a translational movement or even to a combination of movements, for example the combination of a rotation and a translation.

In the present patent application, the term “attenuate” is equivalent to the term reduce. It can mean to reduce partially or entirely, that is to say to cancel.

• positionnées à distances l'une de l'autre, et/ou
• mobiles l'une par rapport à l'autre et/ou
• solidaires l'une de l'autre en étant fixées par des éléments rapportés, cette fixation étant démontable ou non.

Une pièce unitaire monobloc ne peut donc pas être constituée de deux pièces distinctes.In the present patent application, when it is indicated that two parts are distinct, this means that these parts are separate. They are :

• positioned at a distance from each other, and / or
• mobile with respect to each other and / or
• integral with one another by being fixed by attached elements, this fixing being removable or not.

A one-piece unitary part cannot therefore be made up of two distinct parts.

In the present patent application, the term “integral” used to qualify the connection between two parts means that the two parts are linked / fixed with respect to each other, according to all the degrees of freedom, at least for one. configuration of use, unless it is explicitly specified differently. For example, if it is indicated that two parts are integral in translation in an X direction, this means that the parts can be mobile, possibly according to several degrees of freedom, to the exclusion of the freedom in translation in the X direction. In other words, if we move a part in the X direction, the other part performs the same movement.

In the present patent application, an elastic means may for example be a spring, such as a coil spring, elastic washers such as Belleville washers, an elastomer or a rubber.

• une première surface, dite de guidage, également désignée profil de came, portée par une première pièce,
• une deuxième surface, portée par une deuxième pièce.

L'une parmi la première et la deuxième pièce est mobile, au moins en rotation par rapport à un châssis autour d'un axe de rotation. Les première et deuxième surfaces sont configurées de sorte que, lorsque la pièce mobile est entraînée en rotation par rapport au châssis, la distance projetée (D1, D2) entre l'axe de rotation (Y122) et la direction normale (Fr1, Fr2) au point de contact entre ces deux surfaces varie.In the present patent application, the term cam device corresponds to a device comprising at least:

• a first so-called guide surface, also known as the cam profile, carried by a first part,
• a second surface, carried by a second part.

One of the first and the second part is mobile, at least in rotation with respect to a frame about an axis of rotation. The first and second surfaces are configured such that when the moving part is rotated relative to the frame, the projected distance (D1, D2) between the axis of rotation (Y122) and the normal direction (Fr1, Fr2) at the point of contact between these two surfaces varies.

A non-limiting example of a stop according to the present invention will now be described in detail with reference to the figures 1 to 9 .

As indicated in the section relating to the state of the art, a binding usually comprises two stops, one front and the other rear, for retaining a boot on a gliding board. In the non-limiting example which will be described below, the stop considered is a front stop. Alternatively or in combination, the invention can also be applied to a rear stop.

The stopper 1 comprises in particular a frame 11, a body 12, and a sole clamp 13. These elements will be described in detail below.

Chassis 11

The frame 11 has a lower face 111 intended to be placed opposite an upper face 31 of a sliding board 3. The latter also has a lower face 32 intended to be in contact with a substrate such as snow. The lower face 111 of the frame 11 can be fixed to the upper face 31 of the gliding board 3 by being either directly in contact with the latter, or by being fixed to the gliding board 3 via another element.

This binding can eliminate any degree of freedom between the frame 11 and the gliding board 3. For this purpose, and as can be seen in figures 1 , 3 and 4 , the frame 11 comprises fixing means, typically screws 113, which engage with a thread formed in the gliding board 3.

According to an alternative example, provision can be made for this fixing of the frame 11 to the gliding board 3 to allow at least one degree of freedom, for example in translation, of the frame 11 relative to the gliding board 3. According to this alternative example, provision can then be made for the frame 11 to be mounted on a slide which slides along a longitudinal axis of the gliding board 3. This allows its longitudinal position to be adjusted. Once the stop is positioned longitudinally, the frame is blocked so that it cannot move in all directions. The frame is then integral with the gliding board according to all the degrees of freedom in this configuration of use.

The frame 11 also carries a support plate 112, an upper face of which is intended to come into contact with a part of a shoe 2. In the example illustrated, the support plate 112 is configured to receive a front part 21. of a shoe 2. More precisely, the lower surface 213 of a sole 22 of the shoe 2 bears on the upper face of this support plate 112.

In this example, the frame 11 is defined by a median longitudinal axis X115 extending in a direction parallel to the axis X. The longitudinal axis X115 of the frame corresponds to the longitudinal axis of the stop. The longitudinal axis X115 of the chassis, the longitudinal axis of the sliding board 3 and the X axis are substantially parallel.

Body 12

The body 12 of the stop 1 is movably mounted on the frame 11 and carries the sole clamp 13. In the example illustrated, this mobility is mobility in rotation. Alternatively, translational mobility or mobility combining rotational and translational movements can be provided.

In the example illustrated, the body 12 is mounted in rotation about an axis of rotation Y122 transverse to the longitudinal axis X115 of the frame 11. These axes X115, X122 are referenced in particular as figure 6 . They are respectively parallel to the X axis and to the Y axis of the XYZ orthogonal coordinate system illustrated in figures 5 and 6 . Thus, the body 12 can tilt relative to the frame 11 and, consequently, relative to the gliding board 3, at an angle α which can be measured between the longitudinal axis X115 of the frame 11 and an axis longitudinal median X121 of the body 12. The median axis X121 of the body 12 is contained in a plane parallel or identical to the plane ZX and the angle α is measured in this same plane passing through the median axis X121 of the body 12. The inclination of the body relative to the chassis is therefore measured in a vertical plane passing through the longitudinal axis of the chassis. According to a non-limiting example, the longitudinal axis X115 of the frame 11 and the median axis X121 of the body 12 are included in the same plane, preferably the same vertical plane, preferably the ZX plane.

On the figure 7 , the longitudinal axis X115 of the frame 11 is parallel, or even coincident, with the median axis X121 of the body 12. The angle α is then zero. On the figures 7 and 8 the median axis X121 of the body is inclined by an angle α (noted αa in figure 7 and ab in figure 8 ) relative to the longitudinal axis X115 of the frame 11. This angle α increases when the body 12, at the level of the sole clamp 13, moves away from the board 3.

The frame comprises a yoke having two cheeks 114 carrying a shaft 1221 materializing the axis of rotation Y122. The shaft 1221 can be fixed relative to the yoke of the frame 11, the body 12 then rotating around this shaft 1221. Alternatively, provision can be made for the shaft 1221 to be fixed relative to the body 12 and for it to be mounted. rotating in the yoke.

In this example, as seen on the figures 6 to 8 , the axis of rotation Y122 of the body 12 is positioned at the level of the upper part of the body. The yoke thus allows such a positioning of the axis of rotation, at a certain height of the upper face 31 of the gliding board 3. The body 12 can thus pivot mainly below this axis of rotation Y122.

Sole clamp 13

The stopper 1 comprises a sole clamp 13. As indicated above in the section relating to the state of the art, the sole clamp 13 has the function of maintaining a part of the boot 2 integral with the gliding board 3, at least in the vertical and transverse directions. For this, the sole clamp exerts a plating force Fp on the part of the boot 2 in order to keep it in contact with the support plate 112. This plating force Fp is vertical or has a vertical component.

In this example, the sole clamp 13 has a lower bearing surface 131 and rollers 135 configured to come into contact with the shoe 2. When the stopper 1 is a front stopper, the shoe part 2 on which the clamp- sole 13 exerts a plating force is a front part. Preferably, the sole clamp 13 is configured so that the lower bearing surface 131 comes into contact with an upper surface 211 of the front part 21 of the boot 2. Preferably, the sole clamp is also configured so that each roller 135 and more precisely a part of the external cylindrical surface of a roller 135 comes into contact with a lateral surface 212 of this front part 21 of the shoe 2. In the example illustrated for example in figure 2 , the front part 21 of the shoe 2 is an integral part or is at least partly formed by a sole 22 of the shoe 2. Alternatively, the front part of the shoe can be a part a separate insert, attached to the shoe.

According to another variant, the sole clamp acts on a part of the shoe 2 which is distinct from the sole 22 of the shoe 2. The term sole clamp 13 therefore does not necessarily imply contact of the sole clamp 13 at the level. of a sole of the shoe 2. In fact, the part of the shoe 2 on which the sole clamp 13 can exert the plating force Fp may belong to a portion of the shoe located above the sole 22.

In the example illustrated, the sole clamp 13 of the stop comprises two wings 132 arranged on either side of the median axis X121 of the body 12. As illustrated in figure 5 , each wing 132 carries a roller 135 intended to come into contact with a side surface 212 of the front part of the boot. Each wing 132 is rotatably mounted on the body 12 about an axis of rotation Z133. This axis of rotation Z133 is substantially vertical, in particular when the median axis X121 of the body 12 is aligned with the longitudinal axis X115 of the frame 11. Naturally, this axis of rotation Z133 tilts with respect to the frame 11 and therefore with respect to vertically when the body 12 pivots about the axis Y122.

In an engagement configuration of the boot 2, each wing 132 of the sole clamp 13 exerts a plating force Fp on the boot 2, via the lower bearing surface 131. This plating force Fp tends to constrain the boot 2. between the wing 132 and the support plate 112.

In a variant, the sole clamp 13 is a single piece unit having two arms, each arm being intended to cover an upper surface and a lateral surface of an edge of the front part of the boot. The sole clamp is also rotatably mounted on the body 12 about an axis of rotation Z, substantially perpendicular to the median axis X121 of the body 12.

Side release mechanism

• pour retenir ou ramener chaque aile 132 dans une configuration d'engagement avec la chaussure 3,
• autoriser la rotation de chaque aile 132 autour de son axe de rotation Z133 pour passer en configuration de déclenchement lorsque la force Fd exercée par la chaussure 2 sur la fixation est suffisante. Cette force, désignée force de déclenchement, est référencée Fd en figure 5.

Body 12 also includes a side trigger mechanism configured:

• to retain or bring back each wing 132 in a configuration of engagement with the boot 3,
• allow the rotation of each wing 132 around its axis of rotation Z133 to switch to the release configuration when the force Fd exerted by the boot 2 on the binding is sufficient. This force, called the triggering force, is referenced Fd in figure 5 .

More precisely, the triggering force Fd exerted by the boot 2 on the sole clamp 13 has at least one component perpendicular to the axis of rotation Z133 of the wing 132. When this component is sufficient, at least one of the components. wings 132 rotates around its axis of rotation Z133 of rotation. This allows a displacement of the front part of the boot 2 relative to the frame 11 according to a substantially lateral direction, that is to say in a direction having a horizontal component (Y axis) and perpendicular to the longitudinal axis X115 of the frame 11. In the trigger configuration, the wing 132 is no longer in engagement with the front part of the boot 2. The latter can then be released from the stopper 1 and from the binding. Typically, it is during a user fall phase that this force Fd allows a switch to the trigger configuration. The boot can then become detached from the gliding board.

The lateral release mechanism appears in particular on the figures 5 and 6 . This mechanism comprises a tie rod 146 having a drive surface 147 which cooperates with a shaft 134 carried by a wing 132 of the sole clamp 13. In the example illustrated, the tie rod 146 has two drive surfaces 147 which each cooperate with. a shaft 134 carried by one of the two wings 132. The displacement of the tie rod 146, along its main direction of extension, causes the displacement of the shaft 134 which causes the wing 132 to rotate around its axis of rotation Z133. Preferably, the main direction of extension of the tie rod 146 is coaxial with the median axis X121 of the body 12.

The trigger mechanism also comprises at least a first resilient means 141 configured to return the tie rod 146 to a position by which the tie rod 146 brings the wing 132 into the engagement configuration. In the example illustrated, the first elastic means 141 tends to pull the tie rod 146 towards the front of the body 12 which tends to make the shaft 134 turn around the axis of rotation Z133 so that the roller 135 of the wing 132 approaches, in a horizontal plane, the longitudinal axis X115 of the frame 11. The roller 135 is then held or is returned to the engagement configuration. When the boot is engaged with the binding, the left wing roller presses against the left side surface of the front part of the boot and the right wing roller presses against the right side surface of the boot. front part of the shoe.

• une première extrémité 1411 en appui, par contact direct ou par l'intermédiaire d'une pièce additionnelle telle qu'un basculeur 161 par exemple, sur le corps 12. Sur l'exemple illustré, la première extrémité 1411 est en appui sur une paroi 124 du fond du logement 123 par l'intermédiaire d'un basculeur 161 qui sera décrit en détail par la suite.
• une deuxième extrémité 1412 en appui sur le tirant 146 ou sur une pièce solidaire du tirant 146.

For the transmission of the force between the first elastic means 141 and the tie rod 146, provision can be made for the body 12 to have a housing 123 to receive at least part of the first elastic means 141. The first elastic means 141 have:

• a first end 1411 resting, by direct contact or via an additional part such as a rocker 161 for example, on the body 12. In the example illustrated, the first end 1411 rests on a wall 124 from the bottom of the housing 123 via a rocker 161 which will be described in detail later.
• a second end 1412 resting on the tie rod 146 or on a part integral with the tie rod 146.

Preferably, the first elastic means 141 is a spring which works in compression. It may be a coil spring. The first elastic means 141 compress as the wings open or, in other words as the rollers 135 of the wing 132 move away from the median axis X121 of the body 12 in a direction transverse to this axis median X121. This compression takes place along an X142 work axis. This working axis X142 is preferably parallel or coincident with the median axis X121 of the body 12.

In the example illustrated, the tie rod 146 is integral with a sleeve 148 inside which is housed at least in part the first elastic means 141. The sleeve 148 has a bottom wall 1481 on which the second end 1412 rests. of the first elastic means 141. Advantageously, an adjusting member 149 is provided which makes it possible to vary the distance between the shafts 134 and the second end 1412 of the first elastic means 141. This adjustment member 149 makes it possible to adjust the rate of compression of the first elastic means 141 when the wings 132 are in the engagement configuration. It therefore makes it possible to adjust the force that the user must exert to spread the wings and switch to the trigger configuration. Typically, this adjustment member 149 makes it possible to adjust the “DIN value” as it has been defined previously. This adjustment member 149 can be manipulated by the user by means of a tool. In the example illustrated, the adjustment member 149 has a recess to cooperate with a tool and can form a screw head.

In this example, as seen on the figures 6 to 8 , the axis of rotation Y122 of the body 12 is positioned at the level of the upper part of the body, above the first elastic means 141 of the lateral release mechanism 14.

Vertical holding mechanism

As indicated above, to secure the boot 2 vertically with the gliding board, the boot will be clamped between the bearing surface 131 of the sole clamp 13, that is to say, the combination of the surfaces of support of the wings, and the support plate 112 of the frame 12. Thus, the sole clamp 13 exerts a plating force Fp on the shoe 2 via the sole clamp. The paragraphs below detail the kinematics making it possible to control this plating force Fp whatever the angle α that the body 12 forms with respect to the frame 11. Subsequently, the position of the sole clamp 13 with respect to the plate support 112 corresponds to the vertical position (along a Z axis) of the support surfaces 131 of the wings 132 of the sole clamp 13 relative to the horizontal surface tangent to the upper face of the support plate 112. This position is directly linked to the inclination α of the body 12 carrying the sole clamp. The distance of the sole clamp 13 from the support plate 112 therefore corresponds to an increase in the vertical distance H, projection on an axis Z, between the support surfaces 131 and the support plate.

For this, the stopper 1 comprises a vertical holding mechanism. This mechanism comprises at least one second elastic means 151 configured to exert a return force Fr1 on the body 12. This return force Fr1 tends to bring the bearing surfaces 131 of the wings 132 of the sole clamp 13 towards the gliding board. 3, more precisely towards the support plate 112 resting on the gliding board 3. In more detail, this return force Fr1 is exerted in a direction, substantially vertical, which makes it possible to generate a torque M on the body12 around its axis of rotation Y122. This torque generates at the level of the bearing surface 131 of the sole clamp 13 the plating force Fp on the boot 2.

The second elastic means 151 can be carried either, by the body 12, as is the case in the embodiment of the figures 1 to 9 , or by the frame 11, as is the case in the embodiment illustrated in figure 10 . In these two embodiments, the second elastic means 151 is configured so that the frame 11 generates a return force Fr1 on the body 12.

On the example shown in figure 7 , the median axis X121 of the body 12 is inclined at an angle αa relative to the longitudinal axis X115 of the frame 11 and the return force is denoted Fr1a. The product of the intensity of this force Fr1a multiplied by the distance D1a between the direction of this force Fr1a and the axis of rotation Y122 is equal to the value of the torque Ma generated by this force Fr1a on the body 12. Thus, Ma = Fr1a x D1a. In the absence of compensation means, compensation means which will be described later, the intensity of the plating force Fpa exerted by the sole clamp 13 on the shoe 2 is equal to this torque Ma divided by the distance Dp between the direction of this plating force Fpa and the axis of rotation Y122. Thus, Fpa = Ma / Dp = Fr1a / (D1a x Dp).

The figure 7 illustrates the references Fr1a, D1a, Ma, Fpa, Dp.

The second elastic means 151 is configured so that the intensity of the return force Fr1 resulting from the action of the second elastic means increases when the sole clamp 13 moves away from the support plate 112. Preferably, the second elastic means 151 is a spring which works in compression. It may be a coil spring. It compresses as the sole clamp 13 moves away from the support plate 112. This compression takes place along a work axis X152. According to one example, this working axis X152 is parallel to the median axis X121 of the body 12. Preferably, this working axis X152 and parallel but not coaxial to the working axis X142 of the first elastic means 141. These two axes are for example included in the same vertical plane ZX.

On the nonlimiting example illustrated in figures 1 to 9 , the body has a housing 127 shaped to accommodate a part, acting as a piston 155, able to translate in the housing 127. This piston has a head 158 and a body 156. The body forms a sleeve 156, open to one. of its ends and having a bearing wall 157, internal, at the other of its ends. The second elastic means 151 is housed in part inside the sleeve 156. A first end 1511 of the second elastic means 151 bears on a wall 128 of a housing 127 carried by the body 12. A second end 1512 of the second elastic means 151 bears on the bearing wall 157 of the piston 155. The force exerted by the compression of the second elastic means 151 therefore tends to move the head 158 of the piston 155 away from the wall 128 of the body 12. The head 158 of the piston 155 has an outer face intended to come into contact with an extension 116 of the frame 11 or a part carried by the frame.

The return force Fr1 resulting from the action of the second elastic means 151, between the frame 11 and the body 12, applies at the level of the contact between the head 158 of the piston 155 and the extension 116.

Furthermore, this extension 116 and the head 158 of the piston 155 are configured so that when the body 12 pivots about the axis of rotation Y122 the piston 155 moves in the housing 127 thus causing a variation in the compression of the second means. elastic 151. Consequently, depending on the inclination of the body 12 relative to the frame 11, the intensity of the return force Fr1 varies. More precisely, in this case, when the body 12 pivots so as to increase the angle a, the extension 116 compresses the second elastic means 151 which increases the intensity of the return force Fr1 imposed by the frame 11 on the body 12 via the piston 155.

Mitigation device

Particularly advantageously, the stop 1 comprises an attenuation device configured so as to reduce the increase in the intensity of the plating force Fp1 caused by moving the sole clamp 13 away from the support plate. 112.

Typically, the attenuation device makes it possible to limit to a maximum of 20%, preferably to a maximum of 10% and preferably to a maximum of 5%, the variation in the intensity of the plating force Fp1, over the entire stroke of the body 12 relative to the chassis 11.

According to one embodiment, the variation in the intensity of the plating force Fp1 varies within an interval between -20% and + 10%, preferably within an interval between -15% and + 5%.

According to an exemplary embodiment, the intensity of the plating force Fp1 remains constant whatever the position of the body 12 relative to the frame 11, in this example whatever the value of the angle α formed between the axis median X121 of the body 12 and the longitudinal axis X115 of the frame 11. For this exemplary embodiment, as the distance Dp between the point of application of the plating force Fp of the sole clamp 13 on the boot 2 and the axis of rotation Y122 of the body 12 is substantially constant, the intensity of the torque Ma, Mb is substantially constant whatever the position of the body 12 relative to the frame 11.

• H0 en figure 6 et correspond à la configuration de la butée en l'absence de chaussure ;
• Ha en figure 7 et correspond à la distance imposée par une chaussure d'un premier type, par exemple une chaussure de ski alpin et ;
• Hb en figure 8 et correspond à la distance imposée par une chaussure d'un deuxième type, par exemple une chaussure de ski de randonnée.

The angle α is dictated by the distance H, in projection in the vertical direction Z and in the engagement configuration, between the upper face of the support plate 112 and the point of application of the plating force Fp of the sole clamp 13 on shoe 2. This distance is noted:

• H0 in figure 6 and corresponds to the configuration of the stopper in the absence of a shoe;
• Ha in figure 7 and corresponds to the distance imposed by a boot of a first type, for example an alpine ski boot and;
• Hb in figure 8 and corresponds to the distance imposed by a boot of a second type, for example a ski touring boot.

• Lorsqu'aucune chaussure n'est en prise avec la butée, l'angle α est égale à 0°, et la hauteur de serrage correspond à la hauteur de référence H0.
• Lorsqu'une chaussure d'un premier type, par exemple une chaussure de ski alpin, est en prise avec la butée, l'angle α est égale à 1,5°, et la hauteur de serrage Ha correspond à la hauteur de référence H0 + 1,3 mm.
• Lorsqu'une chaussure d'un deuxième type, par exemple une chaussure de ski de randonnée, est en prise avec la butée, l'angle α est égale à 5,5°, et la hauteur de serrage Hb correspond à la hauteur de référence H0 + 5,7 mm.

In this example, the front stop is configured so that:

• When no shoe is engaged with the stopper, the angle α is equal to 0 °, and the clamping height corresponds to the reference height H0.
• When a boot of a first type, for example an alpine ski boot, is engaged with the stopper, the angle α is equal to 1.5 °, and the clamping height Ha corresponds to the reference height H0 + 1.3 mm.
• When a boot of a second type, for example a ski touring boot, is engaged with the stopper, the angle α is equal to 5.5 °, and the clamping height Hb corresponds to the reference height H0 + 5.7 mm.

Furthermore, the front stop includes a stop device which makes it possible to limit the inclination of the body 12. Thus, in this example, at most, the angle α is equal to 8 °, and the clamping height Hm corresponds to the reference height H0 + 8.2 mm.

The stopper is therefore designed so that the body 12 can tilt by a maximum angle α of 15 °, preferably a maximum angle of 10 °. In other words, the stopper is designed so that the body 12 can tilt so that the maximum clamping height Hm corresponds to the reference height H0 + 15 mm, preferably a maximum height corresponding to the reference height H0 + 10 mm.

Thus, whatever the dimensions of the boot part 1, intended to fit into the stopper 1, the torque M as well as the plating force Fp exerted by the sole clamp 13 on this boot part 2 remain constant. or in a small interval. Thus, during a lateral release, the variation in the friction exerted by the sole clamp 13 on the boot 2 also remains constant or within a small range. The threshold value of the triggering force Fd necessary for switching to the triggering configuration therefore also remains constant or within a small interval regardless of these shoe dimensions. The safety of the user is therefore preserved regardless of the shoes he uses with this same stop 1.

In order to achieve a reduction in the increase in the intensity of the plating force Fp1 caused by moving the sole clamp 13 away from the support plate 112, the attenuation device is configured to modify the distance D1 between the direction of application of the return force Fr1 and the axis of rotation Y122 of the body 12. In this example, the distance D1 decreases at the same time as the return force Fr1 increases and the sole clamp 13 moves away of the backing plate 112.

To this end, the attenuation device comprises a cam, also referred to as a cam device, arranged on one of the parts allowing the transfer of the return force Fr1 from the frame 11 to the body 12. This cam is shaped for vary the distance D1.

On the example shown in figures 1 to 9 , this cam is kinematically disposed between the second elastic means 151 and the frame 11. The cam can be disposed at other locations. For example, in an embodiment which will be described in detail with reference to figure 10 , the cam can be placed between the second elastic means 151 and the body 12.

In the example shown in figures 1 to 9 , the cam device is formed by the cooperation of the extension 116 integral with the frame 11 and the external face of the piston 155. These parts 116, 155 are shaped so that the distance D1, as defined above, is reduced to as the angle α formed by the inclination of the body 12 relative to the frame 11 increases. In this example, the outer face of the head 158 of the piston 155 forms a first cam profile 153. Furthermore, the extension 116 forms a second cam profile 154 intended to cooperate with the first cam profile 153. Variants are naturally possible. Provision could for example be made for one of the extension 116 and the outer face of the piston 155 to have a continuous surface and that only the other of the extension 116 and the outer face of the piston 155 to have a cam profile.

According to this embodiment, the cam therefore has a first cam profile 153 integral with the body 12 in rotation about the axis of rotation Y122, and a second cam profile 154 integral with the frame 11.

The cam profiles 153,154 are shaped so that the direction of the return force Fr1 approaches the axis of rotation Y122 as the distance H imposed by the boot 2 on the stop 1 increases.

The figures 7 and 8 illustrate in a particularly clear manner the operation of this attenuation device.

On the figure 7 , the shoe 2 used imposes a distance Ha between the support plate 112 of the frame 11 and the support surface 131 of the sole clamp 13. It follows that the body 12 has an inclination αa relative to the frame 11. Frame 11, by through the extension 116, exerts on the body 12 a return force Fr1a, thanks to the second elastic means 151. The relative position of the first and second cam profiles 153, 154 of the cam device dictate the direction in which this recall force Fr1a is exerted. This cam device therefore dictates the distance D1a between the direction of this return force Fr1a and the center of rotation Y122 of the body 12. Consequently, this cam device impacts the intensity of the plating force Fpa exerted by the clamp. sole 13 on shoe 2, since, as indicated above, Fpa = Ma / Dp = Fr1a / (D1a x Dp).

On the figure 8 , the shoe 2 used imposes a distance Hb, with Hb> Ha, between the support plate 112 of the frame 11 and the support surface 131 of the sole clamp 13. It follows that the body 12 has an inclination ab , with ab> aa, relative to the frame 11. The frame 11, by means of the extension 116, exerts on the body 12 a return force Fr1b, thanks to the second elastic means 151. The relative position of the first and second cam profiles 153, 154 of the cam device dictate the direction in which this return force Fr1b is exerted. This cam device therefore dictates the distance D1b between the direction of this return force Fr1b and the center of rotation 122 of the body 12. As is clearly apparent from the figures. figures 7 and 8 , D1b <D1a. The intensity of the restoring force Fpb exerted by the sole clamp 13 on the shoe 2 is such that Fpb = Mb / Dp = Fr1b / (D1b x Dp).

The second elastic means 151 and the cam device are configured so that the difference between D1b and D1a on the one hand and the difference between Fr1b and Fr1a on the other hand are such that the intensities of the return forces Fpb and Fpa are identical. preferably less than 20%, preferably less than 10%, preferably less than 5%. According to one embodiment, the intensities of the return forces Fpb and Fpa vary in an interval between -20% and + 10%, preferably in an interval between -15% and + 5%.

Compensation mechanism

According to an optional but particularly advantageous embodiment, the stop 1 comprises a compensation mechanism. This compensation mechanism is configured to adapt the plating force Fp according to the adjustment made on the lateral release mechanism 14. More precisely, this compensation mechanism makes it possible to automatically increase the value of the plating force Fp when l. The user adjusts the side trip mechanism 14 to increase the side trip threshold value.

• grâce au dispositif d'atténuation décrit ci-dessus, pour une même valeur de réglage du seuil de déclenchement latéral, typiquement la même valeur DIN, l'effort de placage Fp reste constant quel que soit l'angle a, donc quelle que soit la dimension H de la chaussure 2. Ce cas de figure est illustré en figure 9A : à DIN constant, Fp reste constant quelle que soit l'inclinaison du corps 12, quelle que soit la valeur de l'angle a,
• grâce au dispositif de compensation, pour deux valeurs de réglage du seuil de déclenchement latéral, typiquement pour deux valeurs DIN, l'effort de placage Fp varie et ceci pour une même inclinaison du corps 12, soit pour une même valeur de l'angle α. Ce cas de figure est également illustré en figure 9A : si la valeur DIN augmente, alors Fp augmente. En effet, lorsque l'utilisateur augmente la valeur DIN, il peut souhaiter avoir un maintien plus ferme de sa chaussure dans la fixation et chercher à obtenir à la fois la valeur seuil de l'effort de déclenchement Fd et l'effort de placage Fp plus importants. En l'absence du mécanisme de compensation, une augmentation de la valeur seuil de l'effort de déclenchement Fd, augmentation souhaitée par l'utilisateur, ne s'accompagne pas d'une augmentation de l'effort de placage Fp. Le mécanisme de compensation permet de pallier cet inconvénient.

Thus, according to one embodiment:

• thanks to the attenuation device described above, for the same adjustment value of the lateral tripping threshold, typically the same DIN value, the clamping force Fp remains constant whatever the angle a, therefore whatever the dimension H of shoe 2. This scenario is illustrated in figure 9A : at constant DIN, Fp remains constant whatever the inclination of the body 12, whatever the value of the angle a,
• thanks to the compensation device, for two adjustment values of the lateral tripping threshold, typically for two DIN values, the clamping force Fp varies and this for the same inclination of the body 12, i.e. for the same value of the angle α . This scenario is also illustrated in figure 9A : if the DIN value increases, then Fp increases. Indeed, when the user increases the DIN value, he may wish to have a firmer hold of his boot in the binding and seek to obtain both the threshold value of the triggering force Fd and the plating force Fp. more important. In the absence of the compensation mechanism, an increase in the threshold value of the triggering force Fd, an increase desired by the user, is not accompanied by an increase in the plating force Fp. The compensation mechanism overcomes this drawback.

At the same time, as shown in figure 9B , the lateral tripping threshold value Fd increases slightly the more the body is tilted, that is to say, when the angle α increases, but the value of the DIN adjustment remains constant. Furthermore, the lateral tripping threshold value Fd increases significantly when the user increases the value of the DIN setting, in this example by going from DIN 11 setting to DIN 16 setting.

As shown in figure 8 , the compensation mechanism exerts on the body 12 an additional return force Fr2b, which generates a torque M2b on the body 12, around its axis of rotation Y122. The distance between the direction of this additional return force Fr2b and the axis of rotation Y122 is denoted D2b. Thus, the pair M2b is equal to: M2b = Fr2b x D2b. Moreover, as we have seen previously, the second elastic means 151 also exerts a return force Fr1b on the body 12, which results in a torque M1b equal to M1b = Fr1b x D1b. Thus, the torque exerted on the body is the sum of the two previous pairs and is equal to: Mb = M1b + M2b. The plating force Fpb is directly proportional to the torque Mb and is equal to: Frp = Mb / Dp. The value of the plating force Fpb exerted by the sole clamp 13 on the shoe 2 is then deduced therefrom, which is equal to: Fpb = Fr1b / (D1b x Dp) + Fr2b / (D2b x Dp).

The compensation mechanism comprises a rocker 161 shown in perspective on the figures 3 and 4 . This rocker 161 is configured to be partially housed in the housing 123 of the body 12 receiving the first elastic means 141. The rocker 161 is configured to rotate inside the body 12, around a direction substantially perpendicular to the axis. working X142 of the first elastic means 141. Typically, the rocker 161 is configured to rotate, on a small angular sector, around a direction transverse to the median axis X121 of the body 12. For this, the rocker preferably comprises a pivot portion 1611 configured to be housed in a seat 125 formed in the wall 124 of the housing 123.

In this construction, as mentioned above, the rocker is interposed between the first end 1411 of the first elastic means 141 and the body 12. The first elastic means therefore bears on the rocker. Thus, when the rocker is rotated, action is taken on the first elastic means, by compressing it, for example, when the rocker pivots in one direction.

The rocker 161 also comprises a support portion 1612 interposed between the second end 1412 of the first elastic means 141 and the wall 124 of the bottom of the housing 123 of the body 12. Thus, the first elastic means 141 is supported in particular on this portion of. support 1612.

Preferably, the pivot portion 1611 and the bearing portion 1612 are located on either side of the work axis X142. To this end, the rocker 161 comprises an opening 1615 shaped to be traversed by the tie rod 144.

The rocker 161 also includes an extension 1616 which extends beyond the body 12 to come into contact with a part 117 of the frame 11 or a part carried by the frame.

At least one of the rocker 161 and the part 117 of the frame has a cam profile. In the example illustrated, the extension 1616 carries a cam profile 1613 which cooperates with a profile 1614, having the general shape of a slope, carried by the part 117 of the frame.

As shown in figure 7 , that is to say with a shoe 2 which causes the body 12 to tilt relative to the frame 11 at a low angle αa (“low” shoe 2), the cooperation between the cam surface 1613 and the profile 114 allows the support portion 1612 to be maintained in its seat 126, that is to say, in a position in which this support portion 1612 does not come or just constrain the first elastic means 141. In this example , with the angle αa the cam profile 1613 maintains the bearing portion 1612 pressed against a seat 126 formed in the wall 124 of the body 12. The rocker 161 does not compress the first elastic means 141.

On the contrary, as illustrated in figure 8 , that is to say with a shoe 2 which causes an inclination of the body 12 relative to the frame 11 at a high angle ab ("high" shoe 2), the cooperation between the cam surface 1613 and the profile 114 causes the bearing portion 1612 to move away from its seat 126. This results in the compression of the first elastic means 141. This results in a return force Fr2b which, with the return force Fr1b, contributes to the generation of 'a torque Mb on the body 12, around its axis of rotation Y122. This torque Mb induces the plating force Fpb of the sole clamp 13 on the shoe 2. Furthermore, the first elastic means 141 being more strongly compressed, the threshold value of the tripping force Fd increases as illustrated in figure 9B .

So these figures 7 and 8 illustrate the contribution of the return force Fr2 exerted by the compensation mechanism on the plating force Fp. These figures also clearly illustrate the compression imposed by this compensation mechanism on the first elastic means 141 and therefore on the threshold value of the tripping force Fd (typically the DIN value).

As indicated above, this compensation mechanism is optional and the stopper can function perfectly without such a mechanism.

Alternative embodiment

An alternative embodiment will now be described with reference to figures 10 and 11 . With the exception of the details which will be given below, all the characteristics as well as all the advantages and technical effects mentioned above with regard to the embodiment of the figures 1 to 9 are perfectly transposable and combinable with the embodiment which is described with reference to figures 10 and 11 .

The hatching used for figures 10 and 11 may vary without implying structural differences. Moreover, on the figure 10 a thread 1461 is shown on a portion of the tie rod 146, this thread 1461 cooperating with the adjusting member 149 described with reference to the embodiment illustrated in the figures 1 to 9 .

In this embodiment, the second elastic means 151 is carried by the frame 11, unlike the first embodiment where the second elastic means 151 is carried by the body 12. More precisely, this first elastic means has an end in bearing on a bearing wall 119 integral with the frame 11 and another end bearing on a bearing wall 157 carried by a piston 155 mounted to slide in translation on the frame 11. This translation takes place along an axis parallel to the 'longitudinal axis X115 of the frame 11. Thus, the body 12 rotates relative to the second elastic means 151.

This piston 155 has a surface 154 which slides relative to the frame 11 and relative to the axis of rotation Y122 of the body 12. The body 12 has a surface 153 shaped to remain in contact with the surface 154. The return force Fr1a exerted by the second elastic means 151 is applied to the body 12 at the level of the contact between the surfaces 153 and 154. Thus, these surfaces 153, 154 are kinematically interposed between the second elastic means 151 and the body 12.

The figure 10 illustrates the stop in the low position, that is to say in a position in which it is requested by a first category of shoe. The median axis X121 of the body is therefore inclined relative to the longitudinal axis X115 of the chassis 11 with a non-zero angle of inclination αa.

The figure 11 illustrates the stop in the high position, that is to say in a position in which it is requested by a second category of shoe. The median axis X121 of the body is therefore inclined relative to the longitudinal axis X115 of the frame 11 by a non-zero angle of inclination ab.

According to this alternative embodiment, the cam has a first cam profile 153 integral with the body 12, and a second cam profile 154 carried by the frame 11 and preferably being mounted to slide on the frame 11.

• une plus forte compression du deuxième moyen élastique 151,
• une variation de la direction d'application de l'effort de rappel Fr1a, Fr1b exercé sur le corps 12, grâce au deuxième moyen élastique 151, par l'intermédiaire de la coopération entre les surfaces 153 et 154, cette variation de direction tendant à réduire la distance D1 (D1b < D1a) entre cette direction et l'axe de rotation Y122 du corps 12.

These surfaces 153 and 154 are configured to form the cam device of the attenuation device described above. At least one of these surfaces 153, 154 has a cam profile such that an increase in the inclination of the body 12 relative to the frame 11 (so as to move the sole clamp 13 away from the support plate 112), causes both:

• greater compression of the second elastic means 151,
• a variation in the direction of application of the return force Fr1a, Fr1b exerted on the body 12, thanks to the second elastic means 151, through the cooperation between the surfaces 153 and 154, this variation in direction tending to reduce the distance D1 (D1b <D1a) between this direction and the axis of rotation Y122 of the body 12.

Thus, for this embodiment as for that described with reference to figures 1 to 9 , the attenuation device makes it possible to limit or even cancel out the variation in the intensity of the plating force Fp when the body 12 tilts relative to the frame 11. Without an attenuation device according to the invention , the intensity of the plating force Fp tends to vary proportionally as a function of the inclination of the body relative to the chassis. Consequently, the attenuation device makes it possible to control the plating force Fp according to the inclination of the body and in particular, to avoid having a significant plating force Fp at the end of the body's travel.

With the configurations of the non-limiting examples described above, it is noted that the second elastic means 151 is arranged so as to act on the body 12, that is to say to exert on the latter a return force Fr1, which regardless of the position of the sole clamp 13 relative to the body 12. Furthermore, it will be noted that the second elastic means 151 acts on the body 12 independently of the action that the sole clamp 13 exerts on the first elastic means. Thus, the first elastic means and the second elastic means act completely independently.

Examples of possible variants

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

The invention also applies to constructions combining some or all the characteristics characterizing the embodiments described above.

According to a variant, the first elastic means extends transversely, in a direction Y.

For example, although in the detailed description and the figures the stop incorporating the cam is a front binding stopper, the invention also extends to a rear stopper, also referred to as the binding heel piece.

Furthermore, although in the detailed description the mobility of the body 12 relative to the frame 11 is a rotational mobility around the axis of rotation 122, the invention also extends to a configuration in which the body 12 is movable. in translation relative to the frame 11, or is movable according to a combination of a rotational and translational movement relative to the frame 11.

In the above description, the nonlimiting examples may relate to a gliding board forming a ski and a ski boot. The invention extends to boards for gliding other than skis and for example to snowboard boards and to boots suitable for snowboard boards.

Furthermore, in the preceding example, the retaining device, also referred to as the sole clamp 13, comprises two wings 132 pivotally mounted on the body, each pivoting about an axis of rotation which is specific to them. It is nevertheless possible to provide that the two wings are integral in rotation. They can, for example, form a unitary single piece in the general shape of a “U” or a “V” mounted in rotation on the body 12 about a single axis.

In addition, in the preceding example, the vertical holding mechanism comprises a single second elastic means. However, provision can be made for this vertical holding mechanism to include two or more second elastic means. For example, two springs can be provided, arranged on either side of the median axis X121 of the body 12, and each cooperating with a cam profile.

Claims (14)

Stopper (1) for fixing a boot (2) on a gliding board (3) comprising: - a frame (11) having a lower face (111) configured to be integral with the gliding board (3), - a body (12) movably mounted on the frame (11), - a sole clamp (13) movably mounted on the body (12) and able to come into contact with an upper surface (211) and at least one side part (212) of a front or rear part of the boot (2) ) when the boot (2) is engaged with the binding, - a lateral release mechanism (14) comprising at least a first elastic means (141) acting on the sole clamp (13) to bring it back into a configuration of engagement with the boot (2), - a vertical holding mechanism (15) comprising a second elastic means (151), distinct from the first elastic means (141), arranged so as to continuously exert a return force (Fr1a, Fr1b) on the body (12) to return the sole clamp (13) towards the lower face (111) of the frame (11), this return force producing a plating force (Fp) of the sole clamp (13) on the shoe (2) when the shoe (2) ) is engaged with the binding, characterized in that
the stopper (1) comprises at least one cam (153, 154), kinematically interposed between the second elastic means (151) and one of the frame (11) and the body (12), the cam (153, 154) being shaped to modify, depending on the position of the body (12) relative to the frame (11), the direction of the return force (Fr1a, Fr1b) exerted by the second elastic means (151) on the body (12) ) so as to attenuate a variation in the plating force (Fp) when the sole clamp (13) is moved away from the lower face (111) of the frame (11). Stopper (1) according to the preceding claim in which the body (12) is mounted to pivot on the frame (11) about an axis of rotation (Y122) substantially transverse to a longitudinal axis (X115) of the frame (11), the cam (153, 154) being dimensioned so as to modify the direction of the return force (Fr) exerted by the second elastic means (151) on the body (12) so that the distance (Da, Db) between the direction of the return force (Fr) and the axis of rotation (Y122) of the body (12) differs depending on the angle (a) of inclination of the body (12) relative to the frame (11). Stopper (1) according to the preceding claim in which the axis of rotation (Y122) of the body (12) is positioned at the level of the upper part of the body, above the first elastic means (141) of the lateral release mechanism ( 14). Stopper (1) according to any one of the preceding claims, in which the second elastic means (151) is carried by the body (12). Stopper (1) according to any one of the preceding claims, in which the cam (153, 154) and the vertical holding mechanism are shaped so that the plating force (Fp) does not vary by more than 20%, and preferably does not vary by more than 10%, regardless of the position of the sole clamp (13) relative to the body (12). Stopper (1) according to any one of the preceding claims, in which the second elastic means (151) is arranged so as to act continuously on the body (12), whatever the position of the sole clamp (13) with respect to the body (12). Stopper (1) according to any one of the preceding claims, in which the second elastic means (151) is arranged so as to act on the body (12) independently of the action of the sole clamp (13) on the first elastic means (141) of the lateral release mechanism (14). Stopper (1) according to any one of the preceding claims wherein the first elastic means (141) is configured to be alternately compressed and relaxed along a first working axis (X142), the second elastic means (151) is configured to be alternately compressed and relaxed along a second working axis (X152), said second working axis (X152) being misaligned with respect to said first working axis (X142). Stopper (1) according to any one of the preceding claims, in which a first profile (153) of the cam is mounted in translation on the body (12). Stopper (1) according to the preceding claim in which the second elastic means (151) acts directly on a piston (155) capable of translating in a housing (127) of the body (12), a part of the piston forming a first profile (153 ) of the cam. Stopper (1) according to any one of the preceding claims, in which the sole clamp (13) comprises two wings (132), each wing (132) being mounted pivotably on the body (12). Stopper (1) according to any one of the preceding claims, in which the cam (153, 154) is dimensioned so that the return torque (Ma, Mb) exerted on the body (12), and characterized by the product of the intensity of the return force (Fr1a, Fr1b) by the distance (Da, Db) between the direction of the return force (Fr1a, Fr1b) and the axis of rotation (Y122) of the body (12), is, when the at least one sole clamp (13) is moved away from the gliding board (3), identical, to within 20% and preferably to within 10%, with this return torque (Ma , Mb) when the sole clamp (13) is close to the lower face (111) of the frame (11). Stopper (1) according to any one of the preceding claims, in which the lateral release mechanism (14) comprises an adjustment device configured to allow adjustment of a threshold value of a release force to be applied to the lateral release mechanism. (14) to cause the sole clamp (13) to pass into a lateral release configuration, the stopper also comprising a compensation mechanism (16) configured to exert an additional return force (Fr2) on the body (12), the intensity of the additional return force (Fr2) being a function of said adjustment, the plating force (Fp) being a function of the return force (Fr1) exerted by the second elastic means (151) and of the additional return force (Fr2) exerted by the compensation mechanism. Gliding board (3) equipped with at least one stop according to one of the preceding claims.

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