EP3437703A1 - Braking device for mountaineering ski - Google Patents

Abstract

Rear holding element (4) for attaching a boot (6) to a ski (1), characterized in that it comprises:
- a heel gripper (7) movable between a holding position of a heel (6a) of a shoe (6) and an open position in which the heel gripper (7) exerts no maintenance of a heel (6a) of a shoe (6), and
- a braking device (8) of a ski (1), movable between an active position, in which the braking device (8) is able to brake a ski (1), and an inactive position, in which the device braking system (8) is not capable of braking a ski (1), and
- a locking device (9) of the braking device (8), movable between a locking position, in which the locking device (9) keeps the braking device (8) in its inactive position, and an unlocking position in which the locking device (9) does not hold the braking device (8) in its inactive position (8), and
- a release lever (10) movable with respect to the heel grip (7) between at least one climbing position and a stopping position, the release lever (10) acting on the locking device (9) at during its movement from the climbing position to the boot position so as to move it from its locking position to its unlocking position and / or vice versa.

Description

The invention relates to a rear holding element of a binding of a boot on a ski, particularly suitable for ski touring. It also relates to a device for attaching a boot to a ski incorporating such a rear holding element. Finally, it also relates to a ski on which is fixed such a fixing device or such a rear holding member.

The practice of ski touring requires two different phases of operation of the ski. In a first climbing phase, or more generally walking, the skier advances by raising his heel, which is not secured to the ski. In this first phase, no ski braking device is used. In a second downhill phase, the skier has his shoe fully secured to the ski, and practices skiing as in the case of downhill skiing. He thus needs a fixing device equipped with a trigger mechanism allowing him an automatic release of the shoe in case of fall, to avoid any injury and ensure its safety. A braking device is then also essential to automatically brake the ski in case of triggering the attachment device, to prevent the ski from continuing to slide.

To meet the above constraints, the ski touring braking device is generally equipped with a locking device, which makes it possible to block it and make it inactive in the first climbing phase. Downhill, the locking device is in an unlocked configuration, in which the brake operates in a manner similar to the brakes on alpine skis.

However, the existing solutions remain unsatisfactory and the present invention aims to provide a braking device for ski touring that is simple, user-friendly and reliable.

• un agrippe talon, mobile entre une position de maintien d'un talon d'une chaussure et une position ouverte dans laquelle l'agrippe talon n'exerce aucun maintien d'un talon d'une chaussure, et
• un dispositif de freinage d'un ski, mobile entre une position active, dans laquelle le dispositif de freinage est apte à freiner un ski, et une position inactive, dans laquelle le dispositif de freinage n'est pas apte à freiner un ski, et
• un dispositif de verrouillage du dispositif de freinage, mobile entre une position de verrouillage, dans laquelle le dispositif de verrouillage maintient le dispositif de freinage dans sa position inactive, et une position de déverrouillage, dans laquelle le dispositif de verrouillage ne maintient pas le dispositif de freinage dans sa position inactive, et
• un levier de déchaussage, mobile par rapport à l'agrippe talon entre au moins une position de montée et une position de chaussage, le levier de déchaussage agissant sur le dispositif de verrouillage au cours de son déplacement de la position de montée à la position de chaussage de sorte à le déplacer de sa position de verrouillage à sa position de déverrouillage et/ou inversement.

For this purpose, the invention is based on a rear holding element of a binding of a boot on a ski, characterized in that it comprises:

• a heel grip, movable between a heel holding position of a shoe and an open position in which the heel grip does not maintain a heel of a shoe, and
• a ski braking device, movable between an active position, in which the braking device is able to brake a ski, and an inactive position, in which the braking device is not able to brake a ski, and
• a locking device of the braking device, movable between a locking position, in which the locking device holds the braking device in its inactive position, and an unlocking position, in which the locking device does not hold the locking device; braking in its inactive position, and
• a release lever movable with respect to the heel gripper between at least one climbing position and a running position, the release lever acting on the locking device during its movement from the climbing position to the driving position; boot so as to move it from its locking position to its unlocking position and / or vice versa.

The heaving lever may comprise an actuating element, in particular at least one cam, of the locking device. It can act by a direct support on the locking device, including its locking member.

The bead gripper may include an abutment surface for holding the locking device in its unlocked position when the bale gripper is in its holding position.

The heaving lever can be a monoblock element.

The invention also relates to a fastening device for a ski, characterized in that it comprises a front holding member of a shoe and a rear holding member of a shoe as described above.

The invention also relates to a ski characterized in that it comprises such a ski binding device.

The invention is more precisely defined by the claims.

• La figure 1 est une vue schématique d'un ski selon un mode de réalisation de l'invention.
• La figure 2 est une vue en coupe à plans parallèles d'un élément de maintien arrière d'une fixation d'une chaussure sur un ski dans une configuration de montée selon un mode de réalisation de l'invention.
• La figure 3 est une vue en coupe longitudinale et verticale de l'élément de maintien arrière dans la configuration de montée.
• La figure 4 est une vue en coupe à plans parallèles de l'élément de maintien arrière dans une configuration de chaussage.
• La figure 5 est une première vue en coupe à plans parallèles de l'élément de maintien arrière dans une configuration de descente.
• La figure 6 est une vue en coupe longitudinale et verticale de l'élément de maintien arrière dans la configuration de descente.
• La figure 7 est une vue en coupe à plans parallèles de l'élément de maintien arrière dans une configuration de montée avec cale.
• La figure 8 est une vue en perspective d'une partie de l'élément de maintien arrière dans la configuration de montée.
• La figure 9 est une vue en perspective de l'élément de maintien arrière dans la configuration de montée.
• La figure 10 est une vue en perspective et en coupe à plans parallèles d'une partie de l'élément de maintien arrière dans la configuration de chaussage.
• La figure 11 est une vue en perspective de l'élément de maintien arrière dans la configuration de chaussage.
• La figure 12 est une vue en coupe transversale et verticale de l'élément de maintien arrière.
• La figure 13 est une vue de profil d'une embase selon un mode de réalisation de l'invention.
• La figure 14 est une vue de profil d'un levier selon un mode de réalisation de l'invention.
• La figure 15 est une vue partielle de l'élément de maintien arrière dans la configuration de chaussage.

These objects, features and advantages of the present invention will be set forth in detail in the following description of a particular embodiment given in a non-limiting manner in relation to the appended figures among which:

• The figure 1 is a schematic view of a ski according to one embodiment of the invention.
• The figure 2 is a sectional view in parallel planes of a rear holding member of a shoe attachment on a ski in a climbing configuration according to an embodiment of the invention.
• The figure 3 is a longitudinal and vertical sectional view of the rear holding element in the climbing configuration.
• The figure 4 is a sectional view in parallel planes of the rear holding element in a donning configuration.
• The figure 5 is a first sectional view in parallel planes of the rear holding element in a descent configuration.
• The figure 6 is a longitudinal and vertical sectional view of the rear holding element in the descent configuration.
• The figure 7 is a sectional view in parallel planes of the rear holding element in a climbing configuration with wedge.
• The figure 8 is a perspective view of a portion of the rear holding member in the climb configuration.
• The figure 9 is a perspective view of the rear holding member in the climb configuration.
• The figure 10 is a perspective view in section with parallel planes of a portion of the rear holding element in the boot configuration.
• The figure 11 is a perspective view of the rear holding element in the boot configuration.
• The figure 12 is a cross-sectional and vertical sectional view of the rear holding element.
• The figure 13 is a profile view of a base according to one embodiment of the invention.
• The figure 14 is a profile view of a lever according to one embodiment of the invention.
• The figure 15 is a partial view of the rear holding element in the boot configuration.

To facilitate the understanding of the rest of the description, we define the longitudinal axis X as the horizontal axis extending from the back to the front of the ski, the front and rear being defined by the ordinary direction moving a skier in a straight line, the skier moving from the back to the front. The transverse axis Y is defined as the horizontal axis perpendicular to the longitudinal axis X, the left and the right being defined according to the point of view of the skier. The vertical axis Z is perpendicular to the horizontal plane defined by the X and Y axes, pointing upwards. We assume that the ski rests on a horizontal ground.

The figure 1 schematically illustrates an embodiment of a ski 1 provided with a fixing device 2 according to the invention. The fixing device comprises a front holding element 3 and a rear holding element 4. The front holding element 3 is able to cooperate with the front of a ski boot 6 and the rear holding element is suitable at cooperate with the back of the ski boot. The ski is intended for the practice of ski touring. Ski touring mainly involves two phases of use.

During a first phase, called the climbing phase, the skier walks with the ski, usually on a slope that he goes up. During the climbing phase, the skier's boot is fixed to the ski only via the front holding element 3. The front holding element comprises a pivot connection of axis Y1, parallel to the transverse axis Y which allows the skier to lift the heel and thus facilitates its progression according to a natural movement of walking. The heel of the shoe follows a circular path T1 around the axis Y1 of the pivot connection of the front holding element.

During a second phase called downhill phase, the skier practices skiing in the manner of alpine skiing and descends a sloping terrain. During the descent phase, the back of the shoe, including a heel 6a of the shoe, for example by a sidewalk 6b arranged in the heel 6a, is fixed to the ski through the rear holding element. The pivot connection of the front holding element is blocked and the boot is secured to the ski. Between the ascent phase and the descent phase, the skier may be required to manipulate the ski to prepare for the next phase. For example, the skier may stick or take off anti-kickback fluff on the sole of the ski. Alternatively, the ski and / or the attachment device could be used for any other sport of gliding, for example for telemark, or even downhill skiing or cross-country skiing.

The rear holding element 4, in particular at least partially visible on the figure 8 , comprises a bead grip 7, a braking device 8, a locking device 9 of the braking device 8, and a lever 10. These elements are mounted on a base 11. This base 11 has two vertical fins 30a, 30b positioned on the lateral sides of the base 11 on which is mounted the axis of rotation 31 of the lever 10 and the gripping heel 7. In In addition, the rear holding element 4 also comprises a plate 12 comprising guiding rails for adjusting the longitudinal position 12 of the base 11, in a known manner, visible on the figure 9 . This device for adjusting the longitudinal position of the base 11 makes it possible to adjust the position of the base on a ski to adapt to the size of the shoe. The rear holding element 4 also comprises a heel rest 14 on which the lower face of the heel of a shoe rests, and which also makes it possible to hold the boot sideways during the descent phase, thanks in particular to two flanges. 14a, 14b on both sides of the shoe. According to the embodiment shown, the rear holding element 4 is symmetrical about a median plane of longitudinal and vertical symmetry XZ.

The gripping heel 7 is rotatable between a heel holding position 6a of a shoe, visible on the Figures 5 and 6 , in the descent configuration, and an open position for which the heel grip exerts no heel support, for example visible on the figure 4 , in boot configuration. For this purpose the heel grip comprises a jaw or an edge 7a extending substantially horizontally forwardly. When the heel grip is in the holding position, the edge 7a comes to cover the upper surface of a sidewalk 6b to hold the shoe. The force produced by the heel gripping to maintain the heel of the boot can be adjusted by means of a trigger adjustment device 13. An embodiment of such a trigger adjustment device, in particular visible on the figures 3 , 6 and 12 , may comprise a spring 13a and an adjusting screw 13b of the hardness of the spring. The bead gripper is movable in a rotational movement relative to the base 11 along an axis parallel to the transverse axis Y between the holding position and the open position. In the open position, the heel gripper is tilted backwards by a simple rotation so that the edge 7a is positioned outside the path T1 of the sidewalk 6b of a shoe during the practice of walking, shown on the figure 1 . Thus, a shoe 6 can pivot about the axis Y1 of the pivot connection of the holding element before without hitting the gripping heel 7. Note, in this embodiment, the gripper heel is not animated of a complementary rearward translation movement in climb configuration, but can in any case take only the two positions mentioned above, that is to say the open and holding positions, by a single rotation movement. This solution has the advantage of allowing the rear holding element to have a simple architecture, while allowing to achieve a configuration favorable to the rising phase. More specifically, the open position allows both the boot of the heel but also the lifting of the heel of the shoe for the climb, because of the mounting on the heel grip 7 of a foot pedal 35 retractable, as explained by the following.

The braking device 8 is movable between an active braking position, for which the braking device brakes the ski, and an inactive non-braking position, for which the braking device does not brake the ski. The braking device, visible in the active position on the Figures 10 and 11 , includes a conventional brake used on an alpine ski, as for example described in the document FR2788991 . The brake comprises a pedal 15 intended to receive the support of the ski boot, in general a rear part of the sole of the boot, to allow it to change from the active position to the inactive position, position represented in particular Figures 8 and 9 . Then, the brake comprises a continuous metal element 16 comprising two braking limbs 16a, 16b, for a disposition on either side of the ski. Alternatively, the brake may be non-continuous, be in several distinct parts, including two separate lateral branches. In the active position of the braking device, the braking limbs extend downward under the lower surface of the ski to come rub on the snow and brake the ski. In the inactive position of the braking device, the braking branches extend parallel to the ski, above the lower surface of the ski so as to avoid any contact with the snow. The branches of the braking device are thus substantially driven by a rotational movement. The braking device occupies a fixed position longitudinally relative to the base 11.

The metal element 16 is symmetrical with respect to the plane of symmetry XZ and is rotatable relative to the base 11 along an axis Y2, shown in FIG. figure 10 , parallel to the transverse axis Y. To support this connection in rotation, the metal element comprises on each branch a transverse zone 16c adapted to cooperate with the base. The metal element also comprises a second transversal zone 16d crossing the pedal 15. The pedal is fixed to the metal element by a pivot connection along an axis parallel to the transverse axis Y. Thus, the pedal can be driven by a rotational movement around the Y2 axis while remaining substantially horizontal. A high position of the pedal corresponds to an active position of the braking device, in which its branches 16a, 16b extend downwards. A low position of the pedal corresponds to an inactive position of the braking device, in which its branches 16a, 16b are raised to avoid contact with the ground. Finally, the metal element 16 has a natural elastic property which tends, in the absence of biasing the pedal, to position the braking device in its active position. Alternatively, the brake may include any return spring tending to return it to the active braking position.

The locking device 9 is movable between a locking position, for example visible on the figures 2 and 7 , for which the locking device is adapted to hold the braking device in its inactive position, and an unlocking position, for example visible on the figures 4 and 5 , for which the locking device does not keep the braking device in its inactive position. For this purpose, the pedal 15 comprises a hook 17, visible in particular on the Figures 2, 3 and 10 , made in the body of the pedal and the locking device 9 comprises a corresponding locking member, in the form of a hook 18, in particular visible on the Figures 2 and 3 movable in sliding connection along the longitudinal axis X. The two hooks 17, 18 are able to cooperate to maintain the braking device in its inactive position. Thus, an inactive locked position of the brake is obtained. When the locking device 9 is in the locking position, the hook 18 is in a rear position in which it is adapted to cooperate with the hook 17 of the pedal. When the locking device 9 is in the unlocking position, its hook 18 is in an advanced position, in which it can no longer cooperate with the hook 17 of the pedal. The locking device 9 further comprises a return spring 19 exerting a return force on the hook 18, tending to return it to its rear locking position.

When the hook 18 of the locking device 9 is in an advanced position, it is not in the path of the hook 17 of the pedal 15. The active or inactive position of the braking device is then controlled only by a vertical support on the pedal 15, the braking device is unlocked. If the shoe bears on the pedal, the branches 16a, 16b of the brake pivot upwards and the braking device is inactive. If the shoe does not exert support on the pedal, the pedal goes up thanks to its elastic property, the branches 16a, 16b of the brake being then lowered in the braking position, and the braking device is active.

When the hook 18 of the locking device 9 is in its rear position, it is in the path of the hook 17 of the pedal 15. As long as the braking device is active, the two hooks 17, 18 are not engaged. As soon as the braking device is in the inactive position, for example following the support of a shoe on the pedal 15, the hook 18 can hook the hook 17 of the pedal 15. When the two hooks 17, 18 cooperate, that is, they are engaged with each other, the pedal 15 is held in its down position, and the braking device 8 is therefore kept inactive.

We can indifferently first bring the pedal down and then move the hook 18 rearward or first move the hook 18 rearward and then bring the pedal 15 down to cooperate with the two hook 17, 18. For the latter case, the two hooks each comprise a chamfer arranged so that the bearing of their respective chamfers causes an elastic movement of the hook 18 of the locking device 9 forward to allow the passage of the hook 17 of the pedal under this hook 18. When the hook 17 of the pedal is passed under the hook 18, the latter takes up its position towards the rear thanks to the effect of the return spring 19.

Alternatively the locking device 9 could be arranged differently. For example, the longitudinal position of the two hooks 17, 18 could be reversed. The return spring 19 could be supported by the pedal. In addition, the connection between the hook 18 and an actuating member 20, which will be specified later, may have different shapes.

Lever 10, shown in figure 14 , is movable relative to the gripping bead 7 between at least one mounting position and a stopping position. The lever is adapted during its movement from the climbing position to the stopping position, to move the locking device 9 from its locking position to its unlocking position. For this purpose, the locking device 9 comprises an actuating member 20, particularly visible on the figures 2 , 4 and 10 , integral with the hook 18, and able to interact with the lever 10. Just like the hook 18, the actuating member 20 is also movable in sliding connection along the longitudinal axis X relative to the base. To do this, the actuating member may be housed in a recess formed in the base whose shape allows the sliding of the actuating member along the longitudinal axis X. The lever 10 is movable relative to the Heel catch 7 and relative to the base 11 according to a pivot connection of axis Y3. The lever may be a monoblock element, preferably made from injected plastic. Alternatively, the lever can be formed from two pieces or more advantageously of parts fixed rigidly between them.

According to the embodiment, the lever 10 surrounds the gripping heel left and right, by two sides 21a, 21b, visible on the figure 12 , oriented substantially parallel to the longitudinal axis X and to the vertical axis Z. These two blanks 21a, 21b are themselves surrounded by the vertical fins 30a, 30b of the base 11. These two flanks are connected at their upper end by a bridge 22 adapted to pass over the gripping heel 7. The bridge 22 may have an ergonomic shape adapted to manual actuation or actuation by through a ski pole. In particular, as is visible on the figure 8 , the bridge 22 comprises a cavity 22a adapted to receive the support of the tip of a stick to push on the lever. The bridge 22 also comprises a semi-circular aperture 22b at its rear end adapted to receive the handle of a stick to push the lever, a washer of the stick then passing under the lever. The two sides 21a, 21b each comprise an opening 23 supporting the axis Y3 of rotation and an actuating cam 24. The axis Y3 is located in a lower part of the lever 10 and the two cams 24 are located below the Y3 axis of rotation of the lever, at the lower ends of each flank 21a, 21b.

Depending on the orientation of the lever 10, the two cams 24 or not bear on the actuating member 20. In the intermediate up position of the lever 10, the rear holding element being in a climb configuration, represented on the Figures 2 and 3 the two cams 24 do not press on the actuating member 20. The position of the actuating member 20 (and the hook 18 which is secured thereto) is therefore only imposed by the effect of the return spring 19. The hook 18 is then positioned rearward, that is to say in the direction of the hook 17 of the pedal 15, in a configuration where it can fulfill its locking function of the braking device. In the passage from the climbing position to the footwear position further rearward of the lever, the rear holding element then coming into the boot configuration, shown in FIG. figure 4 the two cams 24 bear on the actuating member 20 towards the front, oriented along the longitudinal axis X, against the return spring. The actuating member 20 is thus translated forward, causing the hook 18 to the same forwards, and the locking device is then moved to the unlocking position. The lever position of the lever corresponds to a position of the lever lowered to the rear. The lever up position corresponds to an intermediate position, partially straightened forward. As will be specified later, during its passage from the climbing position to the stitching position, causing the passage of the climbing configuration to the boot configuration, the lever 10 acts on the locking device, so as to inducing a sufficient movement, according to a longitudinal translation in this embodiment, to position it in its unlocked position, which position is then maintained by the gripping bead, or even by the lever itself. In addition, as will be appreciated, the lever 10 of the embodiment may include a third raised, substantially vertical, position in the descent and / or shimmed configuration of the rear holding member.

The actuating member 20 is in the form of a fork disposed generally horizontally, particularly visible on the figure 10 . The actuating member 20 comprises a forward arm 20a carrying the locking member, that is to say the hook 18 in the embodiment, parallel to the longitudinal axis X, substantially in the middle of the rear holding element 4. The arm 20a interacts with the return spring 19 and supports the hook-shaped locking member 18 at its front end. The return spring 19 is housed in a longitudinal and cylindrical recess of the arm 20a. It is supported on the one hand against a transverse and vertical face of the base 11 and on the other hand against the bottom of the recess of the arm 20a. The actuating member 20 further comprises two rearwardly facing tabs 20b parallel to the longitudinal axis X and able to cooperate with the two cams 24 of the lever 10.

Alternatively, a single leg 20b would be sufficient to actuate the actuating member. The actuating member 20 also comprises a central lug 20c also oriented towards the rear, adapted to cooperate with an abutment surface 26 disposed at the front of the heel gripper 7. When the heel gripper 7 is in position holding, the abutment surface 26 bears on the central lug 20c oriented along the longitudinal axis X against the return spring 19. Thus, the abutment surface 26 can maintain or participate in maintaining the locking device 9 in its unlocking position. As a remark, in the lever position of the lever, the heel grip is in the open position and the lever 10 maintains only the locking device 9 in its unlocked position

The lever 10 can then be moved from its rear seating position to any other position without the locking device 9 tilting in its locking position. The abutment surface 26 is positioned on the heel gripper 7 so that, in the open position of the heel gripping, it does not exert any support on the central lug 20c. The central lug 20c is arranged vertically and comprises a vertical and transverse bearing face adapted to cooperate with the abutment surface 26. When the heel catch 7 is tilted in its holding position, the abutment surface 26 descends downwards. and bears against the bearing face of the central leg 20c. The actuating member 20 can then no longer move back and the locking device 9 is held in its unlocking position.

According to the embodiment presented, the lever 10 is movable to a third raised position substantially vertical, represented by the Figures 5 to 7 . In this position the bridge 22 connecting the two sides of the lever 10 is substantially in line with the axis Y3 of rotation of the lever. Each flank comprises a forward protrusion 27 positioned on the trajectory T1 of the sidewalk when the skier is walking with the ski. In this raised position, the lever 10 forms a wedge of help to the rise for the heel of the shoe. The lever thus has protrusions 27 which pass on the sides of the shoe, to avoid contact between the lever in the raised position and the heel of the shoe during the descent phase, that is to say when the heel is pressed onto the base with the heel grip in the holding position. Thus, the raised position of the lever can be used both in the climbing phase with shim and in the descent phase, that is to say in the climbing configurations with shim and descent of the rear holding element.

The rear holding element 4 also comprises a foot pedal 35, particularly visible on the Figures 10, 11 and 15 movable relative to the heel gripping 7 and relative to the base 11 between two or three positions. In particular, she occupies a boot position, represented on the Figures 10, 11 and 15 , in the boot configuration of the rear holding element, in which it is adapted to receive the support of the heel of a boot during a boot phase, support which causes the heel gripper to rotate downwards 7 until the descent configuration of the rear holding element. It also occupies a retracted position, raised upwards, represented on the figures 3 and 7 , in climbing configuration and climbing with wedge of the rear holding element, in which it is raised under the edge 7a of the heel gripper 7, so as not to be in the path of a shoe. In the embodiment, the foot pedal 35 is articulated on the heel gripper 7. It is in the form of a bent metal wire shaped "U". A transverse portion 35a of the foot pedal forms the base of the "U" and is disposed forward. The transverse portion 35a is extended on either side by two branches 35b articulated in rotation on the heel gripper. The pedal of boot 35 is subjected to a return spring tending to position it in its retracted position. The lever 10 comprises a cam 44, visible on the figure 15 , which acts on the foot pedal to cause its downward rotation against the return spring, in particular to reach its stance position, when passing in the boot configuration of the rear holding element by the actuation lever 10.

The rear holding element is adapted to take various configurations C1, C2, C3, C4 corresponding to different phases of use of the ski.

In a C1 climb configuration illustrated on the Figures 2, 3 , 8 and 9 , the lever 10 is in its upward position in a partially raised intermediate position, the heel grip 7 is in its open position, the locking device 9 is in its locking position, the foot pedal 35 is in a retracted position and the braking device 8 is in the locked inactive position. This configuration corresponds to a phase of use of the ski uphill. Note that if prior to this configuration, the braking device is active, simply exert a support with the shoe on the pedal to engage the two hooks of the locking device and thus keep the braking device in the inactive position . Thus, the braking device does not hinder the skier's progress.

In a configuration of footwear C2, illustrated on figures 4 , 10 and 11 the lever 10 is in its retracted position, the heel grip 7 is in its open position, the brake pedal 15 is in the up position, the foot pedal 35 is in a lowered position and the device locking 9 is in its unlocking position. Such a configuration corresponds to a state of skiing prior to the phase of downhill, in which the skier is preparing to put the ski, that is to say, is about to tilt the heel grip from its open position to its holding position against the sidewalk of the shoe. In this configuration, the braking device 8 is naturally in the active position since the locking device is unlocked.

In a C3 descent configuration, illustrated on the Figures 5 and 6 , the lever 10 is in the third position raised forwards or forward position, the heel gripper 7 is in its holding position, the locking device 9 is in its unlocking position, the braking device 8 is in position inactive because a shoe (not shown on the Figures 5 and 6 ) is pressing on the pedal. However, if the skier were to remove, for example following a fall or a voluntary release, the braking device would automatically go into the active position because the locking device is in the unlocked position.

In a climb configuration with C4 shim, illustrated on the figure 7 , the lever 10 is in the raised position forward or forward position, the heel gripper 7 is in its open position, the locking device 9 is in its locking position and the braking device 8 is in the inactive position. This configuration corresponds to a rising phase with use of the lever 10 as a climbing wedge. This configuration is therefore very close to the climb configuration with the exception of the position of the lever 10. The skier can easily switch from the climb configuration to the climbing configuration with shim and vice versa by manipulating the lever 10.
The positions of the up and down lever 10 correspond here to the highest position forward and are similar in the embodiment shown but alternatively the position of climb with wedge could be different and especially even more raised forward.

According to the embodiment explained above, it therefore appears that the lever 10 fills a first actuating function of the locking device, allowing its automatic passage from the locking position to the unlocking position when it is turned forwards. .

In addition to the foregoing description, the lever 10 according to the embodiment fulfills a second function of automatic actuation of the heel gripper 7. For this, the lever 10 also comprises a means of interaction with the heel gripper. According to the embodiment, this interaction means comprises a cam 54, represented on the figure 15 . More exactly, two cams 54 are arranged on the two lateral flanks of the lever 10. In particular, when the lever 10 is in its rear shoeing position, it keeps the heel gripper 7 in its open position. When the heel gripper 7 is in engagement with a boot, in the lowering configuration C3 of the rear holding member, the lever 10 is in its raised position. To remove, that is to say to release the sidewalk of a shoe from the grip of the gripping heel 7, a skier can simply manipulate the lever 10 to the position of putting on or climb, which causes a tilting of the heel gripper 7 from its holding position to its open position. The lever 10 is thus a heaving lever.

Thus, as mentioned above, the lever 10 has various functions: first, it is able to control the locking device, secondly, it is able to tilt the bale gripper in its open position and third, it is able to form a hold help with climbing. Alternatively, this third function could be optional.

In addition, as explained above, the lever 10 also controls the positioning of the foot pedal 35 of the rear holding element. In a so-called boot position, the foot pedal 35 is able to be actuated by a ski boot. The transverse portion 35a is then positioned at about halfway between the base 11 and the edge 7a of the heel gripper. The transverse portion is positioned on the path of the heel of the shoe when the shoe is attached to the front holding member. This position of the foot pedal 35 is obtained when the rear holding element is in the configuration of footwear C2. When the skier presses the foot pedal 35, the heel catch 7 moves from its open position to its holding position.

As a result of the tilting of the heel grip from its open position to its holding position, the foot pedal 35 descends in a first rest position tilted downwards, against the base, as represented for example on the figure 6 in descent configuration. In this position the transverse portion 35a is embedded in a housing of the heel rest 14 surmounting the base. The transverse portion is then under the sole of a shoe in the descent phase, that is to say, in engagement with the gripping heel.

The foot pedal 35 can also take a second retracted position, tilted upwards against the heel grip. In this position the transverse portion is tilted upwards and is positioned directly under the edge 7a of the heel gripper which is then in the open position. Such a position of the foot pedal corresponds to the rising configuration C1 of the rear holding element and is particularly visible on the Figures 2, 3 , 8 and 9 . The foot pedal is thus positioned outside the trajectory T1 of the heel of the shoe when the ski is used in the climbing phase, that is to say when the shoe is fixed only by the front holding element. The foot pedal 35 is not able to be actuated by a ski boot and does not interfere with the tilting movement of the shoe (T1 trajectory), the heel of the shoe can then come into contact with the base 11 .

As explained above, the lever 10 is rotatable between three rear, forward and raised positions. These positions can be distinguished by a rotation of the lever 10 at an amplitude greater than or equal to 45 degrees between the climbing and seating positions, preferably greater than or equal to 60 degrees. In order to mark, that is to say to identify distinctly each of these three positions, the rear holding element 4 comprises an indexing mechanism. The indexing mechanism comprises two indexing lugs 28 integral with the base, each disposed on either side of the base 11, and more precisely on the inner faces of the lateral fins 30a, 30b of the base 11. and two counter-forms 29, able to cooperate with the two indexing lugs. Each of the counterforms 29 are hollowed in each side 21a, 21b of the outer surfaces of the lever 10. Alternatively, the indexing lugs could be on the lever and against the forms be on the base. The indexing mechanism could also include only one lug cooperating with a single counter-shape arranged to the left or right.

According to the embodiment, the base 11, particularly visible on the figure 13 , comprises a wall forming vertical fins 30a, 30b side of generally circular shape and extending along a longitudinal and vertical plane. The wall is provided with an opening 31 supporting the axis Y3 of rotation of the lever 10 and the axis of rotation of the heel gripper 7. The wall comprises an inner face facing a median plane of the attachment and an outer face , turned towards the outside of the sub-element. The indexing lug is a relief extending vertically on either side of the opening 31. The indexing lug protrudes from the inner face of the wall of the vertical vanes 30a, 30b. The lug may have for example the shape of a cylinder portion. As visible on the figure 14 the counterform comprises three recesses 29a, 29b, 29c. Each recess has a shape complementary to the indexing pin. The three recesses are distributed on an outer face of the side of the lever around the axis Y3. The recesses are separated by angles corresponding to the positioning angles of the lever. Thus for each of the three positions of rise, donnage, and raised the lever, the indexing lug is vis-à-vis one of the three recesses. When the lever is manipulated between two adjacent positions, the lug emerges from one of the recesses, slides along the sidewall and then returns to an adjacent recess.

An elastic deformation or an elastic displacement of the lever 10 or the base along the transverse axis Y is required to allow the transition between said three positions of the lever. To obtain this effect, each sidewall is connected to the base by an elastic means oriented transversely, that is to say acting elastically in the transverse direction Y. In this case, according to the embodiment illustrated in FIG. figure 12 , the elastic means comprises a screw 32, a nut 33 and a Belleville washer 34, or more generally a spring washer, arranged transversely along the axis Y3 and elastically deformable along the axis Y3. The screw comprises a flat head and an axis passing through the opening 23 of the flank of the lever and the opening 31 of the vertical fins 30a, 30b of the base. The outer face of the wall comprises a circular housing 37 inside which is housed the Belleville washer. The screw head is supported on the outer face of the wall of the base, outside the circular housing 37. The Belleville washer is supported on the one hand against the screw head and on the other hand against the wall of the base. The height of the circular housing 37 along the transverse axis Y is defined so that the Belleville washer is compressed at a given height and produces a given reaction force. The force produced by the Belleville washer is independent of the tightening level of the screw because it is supported outside the circular housing 34. The compression of the Belleville washer depends on the height of the circular housing 37 but does not depend no tightening tension of the screw. To summarize, the Belleville washer is inserted between the screw head and the wall of the base. The Belleville washer is interposed between the two parts indexed relative to each other, that is to say between a portion of the lever 10 and a portion of the base 11. The wall of the base is interposed between the Belleville washer and the side of the lever. The sidewall of the lever is interposed between the wall of the base and the nut 33.

The position of the indexing lug inside a recess corresponds to a position of lower tension in the Belleville washer. Such a position is therefore stable. The position of the indexing lug between two recesses corresponds to a position of greater tension in the Belleville washer, that is to say in which the Belleville washer is compressed in a direction along the axis Y3. Such a position is therefore unstable. Thus, the indexing mechanism makes it possible to feel the positions of the lever in which the indexing pin coincides with a recess, that is to say the positions of rise, footing and raised. The advantage of this solution is to make it possible to obtain three stable positions of the lever, avoiding changes in unwanted positions of the lever, as well as its premature wear by significant friction.

As a remark, such an indexing system could alternatively be implemented for any lever of a shoe-holding element on a gliding board, for example on a simple lever for opening or locking a holding jaw. a shoe forming the front or rear holding member of a ski binding, or a movement lever for adjusting the length of a holding member, or a reversing lever of a rear holding member for bring it to a remote position in a climbing phase during the practice of hiking.

Thus, the invention also relates to an element for holding a boot on a gliding board, comprising an actuating lever cooperating with the holding member during its rotation by means of an elastic arrangement, allowing to form an indexing defining several stable positions of the lever. In particular, the elastic arrangement comprises a screw, a nut and a Belleville washer, or more generally a spring washer, arranged along the axis of rotation of the lever and elastically deformable along this axis.

Preferably, the lever, the heel grip, the base, the actuating member and the pedal of the braking device are made from an injected plastic material. However other materials could be considered. In order to prevent the Belleville washer 34 from damaging the wall of the base, a flat washer 36 may be interposed between the Belleville washer and said wall.

Thanks to the invention, the locking device of the braking device can be easily operated with an ergonomic lever. The lever being useful for putting on or off the ski, the same manipulation makes it possible both to lock or unlock the braking device and to actuate the gripping bead. The invention is not limited to the embodiment detailed above. It more generally relates to any heaving lever for actuating a locking device of a braking device. The link between the lever and the locking device may be any mechanical connection, via any actuating element. Advantageously, the lever acts on the locking device by a direct support on the locking device. More specifically, this direct support is performed on the locking member itself of the locking device or on an element which is integral therewith. As a remark, the lever allows the actuation of the locking device, from its locking position to its unlocking position and / or vice versa. The lever also participates in a complementary function of maintaining one or both positions of the locking device. As a remark, in the embodiment described, the gripping heel participates in addition to maintaining the locking device in the unlocked position, to increase the reliability of the device. The heel grip has no effect when changing the position of the locking device.

The lever passing over the heel grip, it offers a greater leverage than the heel grip. The effort required to manipulate the lever is therefore lower than for handling the heel grip. Finally, the lever also serves as a support wedge to the rise II is not useful to provide a specific component for this function. Weight gain can therefore be obtained. The braking device is automatically activated when the skier takes off the ski which reinforces his safety because skiing can not be lost when handling the ski

Claims (17)

Rear holding element (4) for attaching a boot (6) to a ski (1), characterized in that it comprises: a heel catch (7), movable in a rotational movement between a position for holding a heel (6a) of a boot (6) and an open position in which the heel gripper (7) exerts no maintaining a heel (6a) of a shoe (6), and - a braking device (8) of a ski (1), movable between an active position, in which the braking device (8) is able to brake a ski (1), and an inactive position, in which the device braking system (8) is not capable of braking a ski (1), and - a locking device (9) of the braking device (8), movable between a locking position, in which the locking device (9) keeps the braking device (8) in its inactive position, and an unlocking position in which the locking device (9) does not hold the braking device (8) in its inactive position (8), and - a release lever (10) movable with respect to the heel grip (7) between at least one climbing position and a stopping position, the release lever (10) acting on the locking device (9) at during its movement from the climbing position to the boot position so as to move it from its locking position to its unlocking position and / or vice versa. Rear holding element (4) according to the preceding claim, characterized in that the release lever (10) comprises an actuating element, in particular at least one cam, of the locking device. Rear holding element (4) according to claim 1 or 2, characterized in that the release lever (10) acts on the locking device (9) by a direct bearing on the locking device (9). Rear holding element (4) according to the preceding claim, characterized in that the release lever (10) comprises at least one cam (24) and in that the locking device (9) comprises at least one tab (20b) extending perpendicularly to the transverse axis (Y), in particular extending along a longitudinal axis (X), the cam (24) exerting a bearing on the lug (20b) when the lever (10) of heaving is moved from its upward position to its stopping position to move the tab (20b) in longitudinal translation, to move the locking device (9) in its unlocking position. Rear holding element (4) according to one of the preceding claims, characterized in that it comprises a base (11) on which the bead catch (7) is mounted, the braking device (8), the locking (9) and the lever (10) of heaving, in that the heel gripper (7) is rotatable relative to the base (11), and in that the braking device (8) comprises an element metal (16), comprising braking branches (16a, 16b), rotatable relative to the base (11). Rear holding element (4) according to one of the preceding claims, characterized in that the bead catch (7) comprises an abutment surface (26) for holding the locking device (9) in its unlocking position when the the heel gripper (7) is in its holding position. Rear holding element (4) according to one of the preceding claims, characterized in that it takes the following configurations: a climbing configuration (C1) in which the release lever (10) is in its up position, the bead catch (7) is in its open position, the locking device (9) is in its locking position , and - A configuration of footwear (C2) in which the lever (10) of heaving is in its stitching position, the heel gripper (7) is in its open position, the locking device (9) is in its unlocking position , and - a descent configuration (C3) in which the release lever (10) is in a raised position, the heel catch (7) is in its holding position, the locking device (9) is in its unlocking position , and eventually - a climbing configuration with shim (C4) in which the release lever (10) is in the raised position, the bead catch (7) is in its open position, the locking device (9) is in its position of locking. Rear holding element (4) according to one of the preceding claims, characterized in that the release lever (10) comprises a cam (54) cooperating with the heel catch (7) to maintain the heel grip (7). in its open position and boot when in its up position. Rear holding element (4) according to one of the preceding claims, characterized in that the lever (10) for loosening provides a wedge for a heel (6a) of a boot (6) in a raised position. Rear holding element (4) according to one of the preceding claims, characterized in that it comprises a base (11) intended to be fastened integrally to a ski (1) and in that the lever (10) for loosening is mobile in rotation relative to the base (11) along a transverse axis (Y3) of the base (11). Rear holding element (4) according to the preceding claim, characterized in that one of the lifting lever (10) or the base (11) comprises at least one indexing lug (28) and that Another of the lever (10) for removing the shoe or the base (11) comprises at least one against-shape (29) adapted to cooperate with the indexing pin (28) to mark a relative position of the lever (10) releasing relative to the base (11). Rear holding element (4) according to the preceding claim, characterized in that it comprises at least one resilient means oriented along the transverse axis (Y) and positioned between the lever (10) of the heave and the base (11) , in particular a Belleville washer (34), forcing the at least one indexing lug (28) into the at least one againstform (29). Rear holding element (4) according to one of the preceding claims, characterized in that the braking device (8) comprises a pedal (15) provided with a hook (17) and in that the locking device (9) ) comprises a hook (18), the two hooks (17, 18) cooperating to maintain the braking device (8) in its inactive position in the locking position of the locking device (9). Rear holding element (4) according to one of the preceding claims, characterized in that it comprises a foot pedal (35) movable relative to the heel gripper (7), in particular articulated on the heel gripper (7). ). Rear holding element (4) according to the preceding claim, characterized in that the foot pedal (35) occupies the following positions: - a boot position, in which it is adapted to be actuated by a shoe (6) of ski, and - A retracted position, tilted upwards, in particular tilted against the heel grip (7), in which the foot pedal (35) is not adapted to be actuated by a shoe (6) ski, particularly in configuration mounting of the rear holding member (4). Fastening device (2) for a ski, characterized in that it comprises a front holding element (3) of a shoe (6) and a rear holding element (4) of a shoe (6) according to the l one of the preceding claims. Ski (1) characterized in that it comprises a ski binding device according to the preceding claim and / or a rear holding element (4) according to one of claims 1 to 15.

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