Telemark binding for alpine skiing

Abstract

Telemark binding (1) for ski mountaineering, comprising: a base (2); a first jaw (11); a second jaw (12); a first pin (21) which is carried by the first jaw (11); a second pin (22) which is carried by the second jaw (12), the first jaw (11) and the second jaw (12) being arranged with respect to each other to assume: a configuration (A) ready to receive the toe (3) of a ski boot (9), and a configuration (B) with the toe (3) of the ski boot (9) hooked; an actuation lever (4) for the release (7) of the toe (3) of the ski boot (9); a slider (5) which is slidable with respect to the base (2) to assume a forward position (AP) and a rearward position (BP); a service lever (6) which is designed so that, starting from the configuration (B) with the toe (3) of the ski boot (9) hooked, a first rotation of the service lever (6) in a second direction of rotation (R2) brings a first end (31) of the service lever (6) to abut the base (2), so that the same service lever (6) assumes a first position (FP) in which the user can walk uphill; a first hook (7) which is sized to hook a rear protrusion (49) of the forefoot of the ski boot (9), which protrudes towards the heel of the ski boot (9); a longitudinal member (8) which is elastically extendable, on one side it is connected to the first hook (7), on the other side it is rotatably coupled to the slider (5) and is movable by the slider (5). The service lever (6) is designed so that from the configuration (B) with the toe (3) of the ski boot (9) hooked, and after the first rotation, a subsequent second rotation of the service lever (6) in the same second direction of rotation (R2) brings the first end (31) of the service lever (6): to move the slider (5) towards the forward position (AP), at least until the first hook (7) can hook the rear protrusion (49) of the forefoot of the ski boot (9); and to abut the base (2), so that the same service lever (6) assumes a second position (SP) in which the user can ski downhill in Telemark mode.

Description

[0001] The present invention falls within the technical field relating to a Telemark binding, and in particular to a Telemark binding suitable for alpine skiing.

[0002] Telemark binding for alpine skiing is known from EP2737930A1, comprising: a base fixable to a ski; a first jaw that is rotatably coupled with the base; a second jaw that is opposed to the first jaw and that is rotatably coupled with the base; a first pin that is carried by the first jaw and that is dimensioned to be inserted into a first side hole made in the toe of a ski boot; a second pin that is carried by the second jaw and that is dimensioned to be inserted into a second side hole made in the toe of the ski boot; a joint that is connected to the first jaw and to the second jaw; elastic means that are arranged to stabilize the position of the first jaw and of the second jaw, so that the first jaw and the second jaw can assume: a configuration ready to receive the toe of a ski boot, in which the first pin and the second pin are at a first distance from each other; and a configuration of toe of ski boot locked, in which: the first pin and the second pin are at a second distance from each other, which is smaller than the first distance; the first pin is inserted into the first side hole of the toe of the ski boot; and the second pin is inserted into the second side hole of the toe of the ski boot; an actuation lever that is rotatably coupled with the base and that is connected to the joint, so that starting from the configuration of toe of ski boot locked, a rotation of the actuation lever in a first direction of rotation determines the release of the toe of the ski boot from the first pin and from the second pin, thus reaching the configuration ready to receive the toe of a ski boot; a slider that is slidable with respect to the base to assume a forward position, with respect to the tip of a ski when the base is fixed to the ski, and a rearward position, with respect to the tip of a ski when the base is fixed to the ski; a service lever that at a corresponding intermediate portion is rotatably coupled with the actuation lever and that is designed such that starting from the configuration of toe of ski boot locked a first rotation of the service lever in a second direction of rotation brings a first end of the service lever to abut the base, so that the same service lever assumes a first stable position in which the user can walk uphill; a first locking element that: comprises a second intermediate portion, a first end of the locking element and a second end of the locking element that is opposed to the first end of the locking element with respect to the second intermediate portion; at the second intermediate portion it is rotatably coupled to the base; at the first end of the locking element it is provided with a first locking portion to lock a first side portion of the toe of the ski boot; at the second end of the locking element it is constrained to the slider, so that a translation of the slider towards the forward position determines a rotation of the first locking element such that the first locking portion can lock the first side portion of the toe of the ski boot and that a translation of the slider towards the rearward position determines an opposite rotation of the first locking element such that the first locking portion can disengage from the first side portion of the toe of the ski boot; a second locking element that: comprises a third intermediate portion, a third end of the locking element and a fourth end of the locking element that is opposed to the third end of the locking element with respect to the third intermediate portion; at the third intermediate portion it is rotatably coupled to the base; at the third end of the locking element it is provided with a second locking portion to lock a second side portion of the toe of the ski boot, which is opposed to the first side portion of the toe of the ski boot; at the fourth end of the locking element it is constrained to the slider, so that a translation of the slider towards the forward position determines a rotation of the second locking element such that the second locking portion can lock the second side portion of the toe of the ski boot and that a translation of the slider towards the rearward position determines an opposite rotation of the second locking element such that the second locking portion disengages from the second side portion of the toe of the ski boot.

[0003] The service lever is designed such that from the configuration of toe of ski boot locked, and after the first rotation, a subsequent second rotation of the service lever in the same second direction of rotation brings the free first end of the service lever to move the slider towards the forward position at least until the first locking portion can lock the first side portion of the toe of the ski boot and the second locking portion can lock the second side portion of the toe of the ski boot, so that the same service lever assumes a second stable position in which the user can ski downhill in Telemark mode.

[0004] The objective of the present invention consists in modifying the prior-art Telemark binding, described above, in order to have a different downhill skiing experience in Telemark mode.

[0005] Said objective has been achieved through a Telemark binding for alpine skiing in accordance with claim 1.

[0006] Advantageously, the Telemark binding according to the present invention maintains the same ease of use as the prior-art one, because it allows to switch to the uphill walking configuration and, subsequently, to the downhill skiing configuration in Telemark mode through two successive rotations of one same lever (the service lever).

[0007] Specific embodiments of the invention will be described in the following of the present discussion, in accordance with what is reported in the claims and with the aid of the attached drawing plates, in which: figure 1 is a top view: of a Telemark binding for alpine skiing, object of the present invention, in a configuration ready to receive the toe of a ski boot and in accordance with a first embodiment; and of a toe of a ski boot that is about to engage with said Telemark binding; figure 2 is the same view as figure 1, in which the toe of the ski boot has been omitted; figure 3 is the view of section III-III of figure 2; figure 4 is a perspective view of the Telemark binding of figure 1 and figure 5 is a corresponding exploded view; figure 6A is a view of section VI-A - VI-A of figure 2; figure 6B is a view of section VI-B - VI-B of figure 2; figure 7 is a top view: of the Telemark binding of figure 1, in a configuration of toe of ski boot locked and in an uphill walking configuration; and of the toe of the ski boot that is locked to said Telemark binding; figure 8 is the same view as figure 7, in which the toe of the ski boot has been omitted; figure 9 is the view of section IX-IX of figure 8; figure 10 is a top view: of the Telemark binding of figure 1, in a configuration of toe of ski boot locked and in a downhill skiing configuration in Telemark mode; and of the toe of the ski boot that is locked to said Telemark binding; figure 11 is the same view as figure 10, in which the toe of the ski boot has been omitted; figure 12 is the view of section XII-XII of figure 11; figure 13 is a top view: of a Telemark binding for alpine skiing, also object of the present invention, in a configuration ready to receive the toe of a ski boot and in accordance with a second embodiment; and of a toe of a ski boot that is about to engage with said Telemark binding; figure 14 is the same view as figure 13, in which the toe of the ski boot has been omitted; figure 15 is the view of section XV-XV of figure 14; figure 16 is a perspective view of the Telemark binding of figure 13 and figure 17 is a corresponding exploded view; figure 18 is a top view: of the Telemark binding of figure 13, in a configuration of toe of ski boot locked and in an uphill walking configuration; and of the toe of the ski boot that is locked to said Telemark binding; figure 19 is the same view as figure 18, in which the toe of the ski boot has been omitted; figure 20 is the view of section XX-XX of figure 19; figure 21 is a top view: of the Telemark binding of figure 13, in a configuration of toe of ski boot locked and in a downhill skiing configuration in Telemark mode; and of the toe of the ski boot that is locked to said Telemark binding; figure 22 is the same view as figure 21, in which the toe of the ski boot has been omitted; figure 23 is the view of section XXIII-XXIII of figure 22; figure 24 is a top view: of a Telemark binding for alpine skiing, also object of the present invention, in a configuration ready to receive the toe of a ski boot and in accordance with a third embodiment; and of a toe of a ski boot that is about to engage with said Telemark binding; figure 25 is the same view as figure 24 in which the toe of the ski boot has been omitted; figure 26 is the view of section XXVI-XXVI of figure 25; figure 27 is the view of section XXVII-XXVII of figure 25; figure 28 is a perspective view of the Telemark binding of figure 24 and figure 29 is a corresponding exploded view of only some components of the Telemark binding; figure 30 is the view of section XXX-XXX of figure 25; figure 31 is a top view: of the Telemark binding of figure 24, in a configuration of toe of ski boot locked and in an uphill walking configuration; and of the toe of the ski boot that is locked to said Telemark binding; figure 32 is the same view as figure 31, in which the toe of the ski boot has been omitted; figure 33 is the view of section XXXIII-XXXIII of figure 32; figure 34 is the view of section XXXIV-XXXIV of figure 32; figure 35 is a top view: of the Telemark binding of figure 24, in a configuration of toe of ski boot locked and in a downhill skiing configuration in Telemark mode; and of the toe of the ski boot that is locked to said Telemark binding; figure 36 is the same view as figure 35, in which the toe of the ski boot has been omitted; figure 37 is the view of section XXXVII-XXXIV of figure 36; figure 38 is the view of section XXXVIII-XXXVIII of figure 36; figure 39 is an enlarged-scale view of a first side of the front portion of the slider forming part of the Telemark binding of figure 24; figure 40 is an enlarged-scale view of the inner side of a first carriage that engages slidably with the slider portion illustrated in figure 39; figure 41 is an enlarged-scale view of a second side, opposite to the first side, of the front portion of the slider forming part of the Telemark binding of figure 24; figure 42 is an enlarged-scale view of the inner side of a second carriage that engages slidably with the slider portion illustrated in figure 41.

[0008] With reference to the attached drawing plates, a Telemark binding for alpine skiing, object of the present invention, has been generically indicated with (1), in which: it comprises a base (2) fixable to a ski (not illustrated); it comprises a first jaw (11) that is rotatably coupled with the base (2); it comprises a second jaw (12) that is opposed to the first jaw (11) and that is rotatably coupled with the base (2); it comprises a first pin (21) that is carried by the first jaw (11) and that is dimensioned to be inserted into a first side hole (not illustrated in the figures) made in the toe (3) of a ski boot (9); it comprises a second pin (22) that is carried by the second jaw (12) and that is dimensioned to be inserted into a second side hole (not illustrated in the figures) made in the toe (3) of the ski boot (9); the first jaw (11) and the second jaw (12) are arranged between them to assume: a configuration (A) ready to receive the toe (3) of a ski boot (9), in which the first pin (21) and the second pin (22) are at a first distance from each other; and a configuration (B) of the toe (3) of a ski boot (9) locked, in which: the first pin (21) and the second pin (22) are at a second distance from each other, which is smaller than the first distance; the first pin (21) is inserted into the first side hole of the toe (3) of the ski boot (9); and the second pin (22) is inserted into the second side hole of the toe (3) of the ski boot (9); it comprises an actuation lever (4) that is rotatably coupled with the base (2) and that is designed such that, starting from the configuration (B) of the toe (3) of a ski boot (9) locked, a rotation of the same actuation lever (4) in a first direction of rotation may determine the release (7) of the toe (3) of the ski boot (9) from the first pin (21) and from the second pin (22), thus reaching the configuration (A) ready to receive the toe (3) of a ski boot (9); it comprises a slider (5) that is slidable with respect to the base (2) to assume a forward position (AP), with respect to the tip of a ski when the base (2) is fixed to the ski, and a rearward position (BP), with respect to the tip of a ski when the base (2) is fixed to the ski; it comprises a service lever (6) that at a corresponding intermediate portion is rotatably coupled with the actuation lever (4) (fig.3) and that is designed such that starting from the configuration (B) of the toe (3) of a ski boot (9) locked a first rotation of the service lever (6) in a second direction of rotation (R2) (figures 9, 20, 34) brings a first end (31) of the service lever (6) to abut the base (2), so that the same service lever (6) assumes a first position (FP) in which the user can walk uphill; it comprises a first hook (7) that is dimensioned to hook a rear protrusion (49) of the forefoot of the ski boot (9) that extends towards the heel (not illustrated in the figures) of the ski boot (9); it comprises a longitudinal member (8) that: is elastically extendable; on one side is connected to the first hook (7); on the other side is coupled to the slider (5); and is movable by the slider (5); the service lever (6) is designed such that from the configuration (B) of the toe (3) of a ski boot (9) locked, and after the first rotation, a subsequent second rotation of the service lever (6) in the same second direction of rotation (R2) brings the first end (31) of the service lever (6): to move the slider (5) towards the forward position (AP), at least until the first hook (7) can hook the rear protrusion (49) of the forefoot of the ski boot (9); and to abut the base (2), so that the same service lever (6) assumes a second position (SP) in which the user can ski downhill in Telemark mode.

[0009] The first end (31) of the service lever (6) may be rigid, and therefore slide on the base (2), or may be an idler roller, and therefore roll on the base (2). In any case, the first end (31) of the service lever (6) slides on the base (2).

[0010] The longitudinal member (8) may be rotatably coupled to the slider (5), as illustrated in the figures.

[0011] According to a first aspect of the invention (see from fig.13 onwards), the Telemark binding (1) comprises: a first locking element (40) that: comprises a first intermediate portion (41), a first end of the locking element (42) and a second end of the locking element (43) that is opposed to the first end of the locking element (42) with respect to the first intermediate portion (41); at the first intermediate portion (41) it is rotatably coupled to the base (2); at the first end of the locking element (42) it is provided with a first locking portion (44) to lock a first side portion (13) of the toe (3) of the ski boot (9); at the second end of the locking element (43) it is constrained to the slider (5), so that a translation of the slider (5) towards the forward position (AP) determines a rotation of the first locking element (40) such that the first locking portion (44) can abut the first side portion (13) of the toe (3) of the ski boot (9) and that a translation of the slider (5) towards the rearward position (BP) determines an opposite rotation of the first locking element (40) such that the first locking portion (44) can disengage from the first side portion (13) of the toe (3) of the ski boot (9); it comprises a second locking element (50) that: comprises a second intermediate portion (51), a third end of the locking element (52) and a fourth end of the locking element (53) that is opposed to the third end of the locking element (52) with respect to the second intermediate portion (51); at the second intermediate portion (51) it is rotatably coupled to the base (2); at the third end of the locking element (52) it is provided with a second locking portion (54) to lock a second side portion (14) of the toe (3) of the ski boot (9), which is opposed to the first side portion (13) of the toe (3) of the ski boot (9); at the fourth end of the locking element (53) it is constrained to the slider (5), so that a translation of the slider (5) towards the forward position (AP) determines a rotation of the second locking element (50) such that the second locking portion (54) can abut the second side portion (14) of the toe (3) of the ski boot (9) and that a translation of the slider (5) towards the rearward position (BP) determines an opposite rotation of the second locking element (50) such that the second locking portion (54) disengages from the second side portion (14) of the toe (3) of the ski boot (9).

[0012] Furthermore, the first locking element (40) and the second locking element (50) are designed such that when the slider (5) is translated towards the forward position (AP), then the abutment of the first locking element (40) against the second side portion (14) of the toe (3) of the ski boot (9) and the abutment of the second locking element (50) against the second side portion (14) of the toe (3) of the ski boot (9) jointly determine the locking of the toe (3) of the ski boot (9) between the first locking element (40) and the second locking element (50).

[0013] According to a second aspect of the invention, the Telemark binding (1) comprises first elastic means (110) (see from fig.13 onwards, for example fig.15) that are interposed between the base (2) and the slider (5), to move the slider (5) towards the rearward position (BP) and thus keep the first hook (7) distanced from the rear protrusion (49) of the forefoot of the ski boot (9). Furthermore, the service lever (6) is designed such that from the configuration (B) of the toe (3) of a ski boot (9) locked, and after the first rotation, a subsequent second rotation of the service lever (6) in the same second direction of rotation (R2) brings the first end (31) of the service lever (6) to abut the slider (5) and to move the slider (5) against the action of the first elastic means (110).

[0014] The first elastic means (110) may comprise a spring.

[0015] According to a third aspect of the invention, the Telemark binding (1) comprises: joining means (15) that are connected to the first jaw (11) and to the second jaw (12); second elastic means (10) that are arranged to stabilize the position of the first jaw (11) and of the second jaw (12) to assume the configuration (A) ready to receive the toe (3) of a ski boot (9) and the configuration (B) of the toe (3) of a ski boot (9) locked. The actuation lever (4) is connected to the joining means (15) such that, starting from the configuration (B) of the toe (3) of a ski boot (9) locked, a rotation of the same actuation lever (4) in the first direction of rotation determines the release (7) of the toe (3) of the ski boot (9) from the first pin (21) and from the second pin (22), thus reaching the configuration (A) ready to receive the toe (3) of a ski boot (9).

[0016] The joining means (15) may comprise a joint (15). The actuation lever (4) may therefore be connected to the joint (15) to determine the release (7) of the toe (3) of the ski boot (9) from the first pin (21) and from the second pin (22).

[0017] The second elastic means (10) may comprise a plurality of springs that are interposed between the joint (15) and the first jaw (11) and between the joint (15) and the second jaw (12).

[0018] According to a fourth aspect of the invention (see from figure 24 onwards), the Telemark binding (1) comprises: first guide means (81, 82, 83, 84); a first carriage (71) that is carried by the slider (5) and that is slidable along the first guide means (81, 82, 83, 84); third elastic means (72) that are interposed between the first carriage (71) and the base (2), to move the first carriage (71) towards the first end (31) of the service lever (6); a first stop (73) that is carried by the base (2) and that is arranged to act as an end stop for the first carriage (71), against the action of the third elastic means (72), when the first jaw (11) and the second jaw (12) assume the configuration (A) ready to receive the toe (3) of a ski boot (9) and when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the first rotation in the second direction of rotation (R2), reaching the first position (FP). The first stop (73) is also arranged such that the first carriage (71) disengages from it when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the second rotation in the second direction of rotation (R2), with consequent movement of the slider (5) that pulls the first carriage (71), so that the same first carriage (71) can be moved by the third elastic means (72) towards the first end (31) of the service lever (6). The first carriage (71) is provided with a first abutment (74) to abut the first end (31) of the service lever (6) at least contributing to stabilize the service lever (6) in the second position (SP), when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the second rotation in the second direction of rotation (R2).

[0019] The first stop (73) may be a wall that is an integral part of the base (2).

[0020] Preferably, the first abutment (74) forms a first inclined plane that is arranged so that only starting from a predetermined torque, applied to the service lever (6) to rotate the same service lever (6) in a direction opposite to the second direction of rotation (R2), is it possible for the first end (31) of the service lever (6) to travel along the first inclined plane until the service lever (6) again reaches the first position (FP).

[0021] Preferably, the first carriage (71) and the slider (5) together form at least one seat (75, 76) to receive the third elastic means (72). The at least one seat (75, 76), see in particular figures 39, 40, comprises a side wall which in turn comprises a first side wall portion (77) that is part of the first carriage (71) and a second side wall portion (78) that is part of the slider (5). The at least one seat (75, 76) also comprises: a first bottom portion (79) that is part of the first carriage (71) and on which the third elastic means (72) press, which in turn abut the base (2); and a second bottom portion (80) that is part of the slider (5). The second bottom portion (80) is more distant from the mouth (69) of the at least one seat (75, 76) than the first bottom portion (79), so that the second bottom portion (80) represents an end stop for the third elastic means (72).

[0022] According to a fifth aspect of the invention, the Telemark binding (1) comprises a first abutment unit; the first guide means (81, 82, 83, 84), the first carriage (71), the third elastic means (72), the first stop (73) are part of the first abutment unit; the first abutment unit is arranged on a first side of the slider (5), see fig.39; the Telemark binding (1) comprises a second abutment unit which is like the first abutment unit and which is arranged on a second side of the slider (5), which is opposed to the first side of the slider (5), see fig.41, to cooperate jointly with the first abutment unit.

[0023] In other words, the second abutment unit may comprise: second guide means (35, 36, 37, 38); a second carriage (86) that is carried by the slider (5) and that is slidable along the second guide means (35, 36, 37, 38); fourth elastic means (87) that are interposed between the second carriage (86) and the base (2), to move the second carriage (86) towards the first end (31) of the service lever (6); a second stop (88) that is carried by the base (2) and that is arranged to act as an end stop for the second carriage (86), against the action of the fourth elastic means (87), when the first jaw (11) and the second jaw (12) assume the configuration (A) ready to receive the toe (3) of a ski boot (9) and when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the first rotation in the second direction of rotation (R2), reaching the first position (FP). The second stop (88) is also arranged such that the second carriage (86) disengages from it when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the second rotation in the second direction of rotation (R2), with consequent movement of the slider (5) that pulls the second carriage (86), so that the same second carriage (86) can be moved by the fourth elastic means (87) towards the first end (31) of the service lever (6). The second carriage (86) is provided with a second abutment (89) to abut the first end (31) of the service lever (6), contributing to stabilize the service lever (6) in the second position (SP), when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the second rotation in the second direction of rotation (R2).

[0024] The second stop (88) may be a wall that is an integral part of the base (2).

[0025] Preferably, the second abutment (89) forms a second inclined plane that is arranged so that only starting from a second predetermined torque, applied to the service lever (6) to rotate the same service lever (6) in a direction opposite to the second direction of rotation (R2), is it possible for the first end (31) of the service lever (6) to travel along the first inclined plane and the second inclined plane until the service lever (6) again reaches the first position (FP). The first predetermined torque may be different from the second predetermined torque.

[0026] Preferably, the second carriage (86) and the slider (5) together form at least one further seat (85, 90) to receive the third elastic means (72). The at least one further seat (85, 90) comprises a side wall which in turn comprises a first side wall portion (77) that is part of the second carriage (86) and a second side wall portion (78) that is part of the slider (5). The at least one further seat (85, 90) also comprises: a first bottom portion (79) that is part of the second carriage (86) and on which the fourth elastic means (87) press, which in turn abut the base (2); and a second bottom portion (80) that is part of the slider (5). The second bottom portion (80) is more distant from the mouth (69) of the at least one further seat (85, 90) than the first bottom portion (79), so that the second bottom portion (80) represents an end stop for the fourth elastic means (87).

[0027] Preferably (fig.29), the base (2) comprises a first base wall (45) and a second base wall (46) that is opposed to the first base wall (45); the front portion of the slider (5), with respect to the tip of a ski when the base (2) is fixed to the ski, is arranged between the first base wall (45) and the second base wall (46); the first base wall (45) forms a first sliding track (47); the second base wall (46) forms a second sliding track (48); the first base wall (45) and the second base wall (46) are arranged so that the first sliding track (47) and the second sliding track (48) slidingly receive the first end (31) of the service lever (6) when the service lever (6) performs the first rotation in the second direction of rotation (R2) and when the service lever (6) performs the second rotation in the second direction of rotation (R2).

[0028] The slider (5) may be provided with a second hook (7) to be hooked by the first end (31) of the service lever (6).

[0029] Preferably, the slider (5) has one degree of freedom.

[0030] Preferably, the slider (5) is slidable with respect to the base (2) to move along a direction that is parallel to the longitudinal axis of the ski when the base (2) is fixed to the ski.

[0031] The actuation lever (4) may be rotatably coupled to the base (2) at a corresponding intermediate portion (fig.3).

[0032] The longitudinal member (8) may be elastically extendable from a predetermined length.

[0033] The longitudinal member (8) may be arranged to slide on the ski when the base (2) is fixed to the ski and when the slider (5) moves the same longitudinal member (8).

[0034] The longitudinal member (8) may comprise (see fig.6A): a first rod (19) which at a first rod end (101) is rotatably coupled with the slider (5) and which at a second rod end (102), opposite to the first rod end (101), is provided with a third abutment (23); a first tubular element (27) that slidably receives inside it the first rod (19), that is fixed to the first hook (7), and that at its end facing the first rod end (101) is provided with a wall that: forms a fourth abutment (24) and is provided with a first through hole (29) to allow the sliding of the first rod (19) towards the outside; fifth elastic means (32) that are interposed between the third abutment (23) and the fourth abutment (24), so that the axial distance between the first rod end (101) that is rotatably coupled with the slider (5) and the first hook (7) can vary due to the elastic action of the fifth elastic means (32).

[0035] In particular, the fifth elastic means (32) may be arranged to oppose a movement away of the first hook (7) with respect to the first rod end (101) that is rotatably coupled with the slider (5).

[0036] The longitudinal member (8) may comprise a first extension unit (19, 27, 32), which in turn comprises the first rod (19), the first tubular element (27), and the fifth elastic means (32).

[0037] The longitudinal member (8) may also comprise a second extension unit (20, 28, 33) which is like the first extension unit (19, 27, 32) and which is arranged beside the first extension unit (19, 27, 32).

[0038] In other words, the second extension unit (20, 28, 33) may comprise (see fig.6B): a second rod (20) which at a third rod end (103) is rotatably coupled with the slider (5) and which at a fourth rod end (104), opposite to the third rod end (103), is provided with a fifth abutment (25); a second tubular element (28) that slidably receives inside it the second rod (20) (fig.4), that is also fixed to the first hook (7) and to the first tubular element (27), and that at its end facing the third rod end (103) is provided with a wall that: forms a sixth abutment (26) (fig.6B) and is provided with a second through hole (30) to allow the sliding of the second rod (20) towards the outside; sixth elastic means (33) that are interposed between the fifth abutment (25) and the sixth abutment (26), so that the axial distance between the third rod end (103) that is rotatably coupled with the slider (5) and the first hook (7) can vary due to the elastic action of the sixth elastic means (33).

[0039] In particular, the sixth elastic means (33) may be arranged to oppose a movement away of the first hook (7) with respect to the third rod end (103) that is rotatably coupled with the slider (5).

[0040] Referring again to the first aspect of the invention, the Telemark binding (1) may comprise a pin (39) to constrain the second end of the locking element (43) to the slider (5) and to constrain the fourth end of the locking element (53) to the slider (5). As shown in fig.17, the base (2) may be provided with at least one hole (preferably two concentric holes, one of which is a through hole and the other is a blind hole) through which the pin (39) may pass. The second end of the locking element (43) may be provided with a third through hole (63) having the shape of a slot, to receive the pin (39); the fourth end of the locking element (53) may be provided with a fourth through hole (64) having the shape of a slot, to receive the pin (39).

[0041] Referring again to the fourth aspect of the invention (see from figure 24 onwards), the first guide means (81, 82, 83, 84) may comprise (figures 27, 34, 38): a first guide face (81) that is carried by the slider (5); a second guide face (82) that is carried by the slider (5) and that is opposed to the first guide face (81); a third guide face (83) that is carried by the slider (5) and that is adjacent both to the first guide face (81) and to the second guide face (82); a fourth guide face (84) (visible in figure 29) that is integral with the base (2) and that is opposed to the third guide face (83).

[0042] The slider (5) may be provided with a first shoulder (65) and a second shoulder (66), see figure 39. The first shoulder (65) may be provided with the first guide face (81) and the second shoulder (66) may be provided with the second guide face (82).

[0043] The first shoulder (65) and the second shoulder (66) may protrude with respect to the third guide face (83), see figure 29.

[0044] The at least one seat (75, 76) may comprise a first seat (75) and a second seat (76) that are spaced along the axis of the slider (5); the third elastic means (72) may comprise a spring that is inserted in the first seat (75) and another spring that is inserted in the second seat (76).

[0045] The first carriage (71) may have a planar shape.

[0046] The first carriage (71) may comprise (see fig.40): a first carriage face (91) to abut the first guide face (81); a second carriage face (92) to abut the second guide face (82); a third carriage face (93) to abut the third guide face (83); a fourth carriage face (94) (visible only in fig.29) to abut the fourth guide face (84); a fifth carriage face (95), which partially forms the mouth (69) of the first seat (75) and of the second seat (76), indicated only in fig.40; a sixth carriage face (96) having a first portion to abut the first stop (73) and a second portion that forms the first abutment (74).

[0047] The first carriage face (91) and the first guide face (81) may be planar. The second carriage face (92) and the second guide face (82) may be planar. The third carriage face (93) and the third guide face (83) may be planar. The fourth carriage face (94) and the fourth guide face (84) may be planar.

[0048] Referring again to the fifth aspect of the invention, the second guide means (35, 36, 37, 38) may comprise: a fifth guide face (35) that is carried by the slider (5); a sixth guide face (36) that is carried by the slider (5) and that is opposed to the fifth guide face (35); a seventh guide face (37) that is carried by the slider (5) and that is adjacent both to the fifth guide face (35) and to the sixth guide face (36); an eighth guide face (38) (fig.29) that is integral with the base (2) and that is opposed to the seventh guide face (37).

[0049] The slider (5) may be provided with a third shoulder (67) and a fourth shoulder (68) (visible in figures 30, 41). The third shoulder (67) may be provided with the fifth guide face (35) and the fourth shoulder (68) may be provided with the sixth guide face (36).

[0050] The third shoulder (67) and the fourth shoulder (68) may protrude with respect to the seventh guide face (37).

[0051] The at least one further seat (85, 90) may comprise a third seat (85) and a fourth seat (90) that are spaced along the axis of the slider (5) (the third seat (85) may be opposed to the first seat (75) and the fourth seat (90) may be opposed to the second seat (76)); the fourth elastic means (87) may comprise a spring that is inserted in the third seat (85) and another spring that is inserted in the fourth seat (90).

[0052] The second carriage (86) may have a planar shape.

[0053] The second carriage (86) may comprise (fig.42): a seventh carriage face (57) to abut the fifth guide face (35); an eighth carriage face (58) to abut the sixth guide face (36); a ninth carriage face (59) to abut the seventh guide face (37); a tenth carriage face (indicated only in figure 29) to abut the eighth guide face (38); an eleventh carriage face (61), which partially forms the mouth (69) of the third seat (85) and of the fourth seat (90); a twelfth carriage face (62) having a first portion to abut the second stop (88) and a second portion that forms the second abutment (89).

[0054] The seventh carriage face (57) and the fifth guide face (35) may be planar. The eighth carriage face (58) and the sixth guide face (36) may be planar. The ninth carriage face (59) and the seventh guide face (37) may be planar. The tenth carriage face (60) and the eighth guide face (38) may be planar.

[0055] The illustrated embodiments are described below.

[0056] The first embodiment of figures 1-12 is now described.

[0057] The first embodiment incorporates the third aspect of the invention.

[0058] Figures 1-6 show the Telemark binding (1) in a configuration (A) ready to receive the toe (3) of a ski boot (9). The slider (5) comprises a third hook (18) that faces the second hook (7) and that is abutted, on one side, by the actuation lever (4) and, on the other side, by the first end (31) of the service lever (6); therefore, the slider (5) is stably in the rearward position (BP).

[0059] Figures 7-9 show the Telemark binding (1) in a configuration (B) with the toe (3) of a ski boot (9) locked and after the service lever (6) has made the first rotation in the second direction of rotation (R2), so that the first end (31) of the service lever (6) abuts the base (2) and so that the same service lever (6) assumes the first position (FP) in which the user can walk uphill. The slider (5) is still in the rearward position (BP), because the first end (31) of the service lever (6) has not moved the slider (5), and the first hook (7) is still disengaged from the rear protrusion (49) of the forefoot of the ski boot (9).

[0060] The slider (5) comprises an abutment tooth (34).

[0061] The portion of the actuation lever (4) that faces the joint (15) abuts the abutment tooth (34), while the first end (31) of the service lever (6) abuts the second hook (7), so that the slider (5) is stably kept in the rearward position (BP).

[0062] Figures 10-12 show the Telemark binding (1) in a configuration (B) with the toe (3) of a ski boot (9) locked and after the service lever (6) has also made the second rotation in the second direction of rotation (R2), sliding on the base (2), which has caused the first end (31) of the service lever (6) to move the slider (5) to the forward position (AP), so that the first hook (7) is hooked to the rear protrusion (49) of the forefoot of the ski boot (9). The service lever (6) thus assumes the second position (SP), in which the user can ski downhill in Telemark mode. The slider (5) is stably maintained in the forward position (AP) because, on one side, the first hook (7) is hooked to the rear protrusion (49) of the forefoot of the ski boot (9), and, on the other side, the first end (31) of the service lever (6) stably abuts the base (2) (in particular the first sliding track (47) and the second sliding track (48)).

[0063] The second embodiment of figures 13-23 is now described.

[0064] The second embodiment incorporates the first aspect of the invention, the second aspect of the invention, and the third aspect of the invention.

[0065] Figures 13-17 show the Telemark binding (1) in a configuration (A) ready to receive the toe (3) of a ski boot (9). The slider (5) is subjected to the action of the first elastic means (110) that tend to move it into the rearward position (BP); in this rearward position (BP) the slider (5) stably remains, being unable to move further backward due to the abutment of the first locking element (40) against a first sector of the base (16) and the abutment of the second locking element (50) against a second sector of the base (17) (see specifically figure 14): indeed, the first sector of the base (16) prevents the first locking element (40) from further rotating and the second sector of the base (17) prevents the second locking element (50) from further rotating, which overall prevents the slider (5) from moving further backward.

[0066] Figures 18-20 show the Telemark binding (1) in a configuration (B) with the toe (3) of a ski boot (9) locked and after the service lever (6) has made the first rotation in the second direction of rotation (R2), so that the first end (31) of the service lever (6) abuts the base (2) and that the same service lever (6) assumes the first position (FP) in which the user can walk uphill. The slider (5) is still in the rearward position (BP), because the first end (31) of the service lever (6) has not moved the slider (5), and the first hook (7) is still disengaged from the rear protrusion (49) of the forefoot of the ski boot (9).

[0067] The slider (5) therefore stably remains in the rearward position (BP).

[0068] Since the slider (5) is in the rearward position (BP), the first locking element (40) and the second locking element (50) remain stationary (see figures 14 and 19) and therefore do not engage respectively the first lateral portion (13) of the toe (3) of the ski boot (9) and the second lateral portion (14) of the toe (3) of the ski boot (9).

[0069] Figures 21-23 show the Telemark binding (1) in a configuration (B) with the toe (3) of a ski boot (9) locked and after the service lever (6) has also made the second rotation in the second direction of rotation (R2), which has brought the first end (31) of the service lever (6) to move the slider (5) into the forward position (AP), against the action of the first elastic means (110), so that the first hook (7) is hooked to the rear protrusion (49) of the forefoot of the ski boot (9). The service lever (6) thus assumes the second position (SP), in which the user can ski downhill in Telemark mode. The slider (5) is stably maintained in the forward position (AP) because, on one side, the first hook (7) is hooked to the rear protrusion (49) of the forefoot of the ski boot (9), and, on the other side, the first end (31) of the service lever (6) stably abuts the base (2) (in particular the first sliding track (47) and the second sliding track (48)).

[0070] The first locking element (40) and the second locking element (50) are rotated (see figures 18, 19 on the one hand, and figures 21, 22 on the other), engaging respectively the first lateral portion (13) of the toe (3) of the ski boot (9) and the second lateral portion (14) of the toe (3) of the ski boot (9) until the toe (3) of the ski boot (9) is locked.

[0071] The third embodiment of figures 24-38 is now described.

[0072] The third embodiment incorporates the first aspect of the invention, the second aspect of the invention, the third aspect of the invention, the fourth aspect of the invention, and the fifth aspect of the invention.

[0073] Figures 24-30 show the Telemark binding (1) in a configuration (A) ready to receive the toe (3) of a ski boot (9). The slider (5) is subjected to the action of the first elastic means (110) that tend to move it into the rearward position (BP); in this rearward position (BP) the slider (5) remains stably, being unable to move further backward due to the abutment of the first locking element (40) against a first sector of the base (16) and the abutment of the second locking element (50) against a second sector of the base (17), as already explained above with reference to the second embodiment and to figure 14.

[0074] With the slider (5) in the rearward position (BP), the first stop (73) and the second stop (88) abut the first portion of the sixth carriage face (96) of the first carriage (71) and the first portion of the twelfth carriage face (62) of the second carriage (86), preventing respectively the first abutment (74) and the second abutment (89) from moving towards the first end (31) of the service lever (6), see figure 27.

[0075] Figures 31-34 show the Telemark binding (1) in a configuration (B) with the toe (3) of a ski boot (9) locked and after the service lever (6) has made the first rotation in the second direction of rotation (R2), so that the first end (31) of the service lever (6) abuts the base (2) and that the same service lever (6) assumes the first position (FP) in which the user can walk uphill. The slider (5) is still in the rearward position (BP), because the first end (31) of the service lever (6) has not moved the slider (5), and the first hook (7) is still disengaged from the rear protrusion (49) of the forefoot of the ski boot (9).

[0076] The slider (5) therefore remains stably in the rearward position (BP).

[0077] Since the slider (5) is in the rearward position (BP), the first locking element (40) and the second locking element (50) remain stationary (compare figures 25 and 32) and therefore do not abut respectively the first lateral portion (13) of the toe (3) of the ski boot (9) and the second lateral portion (14) of the toe (3) of the ski boot (9).

[0078] Also in this case, with the slider (5) in the rearward position (BP), the first stop (73) and the second stop (88) abut the first part of the sixth carriage face (96) of the first carriage (71) and the first part of the twelfth carriage face (62) of the second carriage (86), thus preventing respectively the first abutment (74) and the second abutment (89) from moving towards the first end (31) of the service lever (6), see figure 34.

[0079] Figures 35-38 show the Telemark binding (1) in a configuration (B) with the toe (3) of a ski boot (9) locked and after the service lever (6) has also made the second rotation in the second direction of rotation (R2), which has brought the first end (31) of the service lever (6) to move the slider (5) into the forward position (AP), against the action of the first elastic means (110), so that the first hook (7) is hooked to the rear protrusion (49) of the forefoot of the ski boot (9). The service lever (6) thus assumes the second position (SP), in which the user can ski downhill in Telemark mode. The slider (5) is stably maintained in the forward position (AP) because, on one side, the first hook (7) is hooked to the rear protrusion (49) of the forefoot of the ski boot (9), and, on the other side, the first end (31) of the service lever (6) stably abuts both the base (2) (in particular the first sliding track (47) and the second sliding track (48)) and the first abutment (74) and the second abutment (89).

[0080] In fact, with the slider (5) in the forward position (AP), the first stop (73) and the second stop (88) no longer abut the first part of the sixth carriage face (96) of the first carriage (71) and the first part of the twelfth carriage face (62) of the second carriage (86), so that the first abutment (74) and the second abutment (89) can move towards the first end (31) of the service lever (6), pushed respectively by the third elastic means (72) and by the fourth elastic means (87), see figure 38.

[0081] It is understood that what is described above is by way of example and not limitation, therefore any constructional variants are to be considered within the protective scope of the present technical solution, as claimed below.

Claims

1. Telemark binding (1) for alpine skiing, wherein: it comprises a base (2) fixable to a ski; it comprises a first jaw (11) that is rotatably coupled with the base (2); it comprises a second jaw (12) that is opposed to the first jaw (11) and that is rotatably coupled with the base (2); it comprises a first pin (21) that is carried by the first jaw (11) and that is dimensioned to be inserted into a first side hole made in the toe (3) of a ski boot (9); it comprises a second pin (22) that is carried by the second jaw (12) and that is dimensioned to be inserted into a second side hole made in the toe (3) of the ski boot (9); the first jaw (11) and the second jaw (12) are arranged between them to assume: a configuration (A) ready to receive the toe (3) of a ski boot (9), in which the first pin (21) and the second pin (22) are at a first distance from each other; and a configuration (B) of the toe (3) of a ski boot (9) locked, in which: the first pin (21) and the second pin (22) are at a second distance from each other, which is smaller than the first distance; the first pin (21) is inserted into the first side hole of the toe (3) of the ski boot (9); and the second pin (22) is inserted into the second side hole of the toe (3) of the ski boot (9); it comprises an actuation lever (4) that is rotatably coupled with the base (2) and that is designed such that, starting from the configuration (B) of the toe (3) of a ski boot (9) locked, a rotation of the same actuation lever (4) in a first direction of rotation may determine the release (7) of the toe (3) of the ski boot (9) from the first pin (21) and from the second pin (22), thus reaching the configuration (A) ready to receive the toe (3) of a ski boot (9); it comprises a slider (5) that is slidable with respect to the base (2) to assume a forward position (AP), with respect to the tip of a ski when the base (2) is fixed to the ski, and a rearward position (BP), with respect to the tip of a ski when the base (2) is fixed to the ski; it comprises a service lever (6) that at a corresponding intermediate portion is rotatably coupled with the actuation lever (4) and that is designed such that starting from the configuration (B) of the toe (3) of a ski boot (9) locked, a first rotation of the service lever (6) in a second direction of rotation (R2) brings a first end (31) of the service lever (6) to abut the base (2), so that the same service lever (6) assumes a first position (FP) in which the user can walk uphill; characterized by the fact that: it comprises a first hook (7) that is dimensioned to hook a rear protrusion (49) of the forefoot of the ski boot (9) that extends towards the heel of the ski boot (9); it comprises a longitudinal member (8) that: is elastically extendable; on one side is connected to the first hook (7); on the other side is coupled to the slider (5); and is movable by the slider (5); the service lever (6) is designed such that from the configuration (B) of the toe (3) of a ski boot (9) locked, and after the first rotation, a subsequent second rotation of the service lever (6) in the same second direction of rotation (R2) brings the first end (31) of the service lever (6): to move the slider (5) towards the forward position (AP), at least until the first hook (7) can hook the rear protrusion (49) of the forefoot of the ski boot (9); and to abut the base (2), so that the same service lever (6) assumes a second position (SP) in which the user can ski downhill in Telemark mode.

2. Telemark binding (1) according to the previous claim, wherein: it comprises a first locking element (40) that: comprises a first intermediate portion (41), a first end of the locking element (42) and a second end of the locking element (43) that is opposed to the first end of the locking element (42) with respect to the first intermediate portion (41); at the first intermediate portion (41) it is rotatably coupled to the base (2); at the first end of the locking element (42) it is provided with a first locking portion (44) to lock a first side portion (13) of the toe (3) of the ski boot (9); at the second end of the locking element (43) it is constrained to the slider (5), such that a translation of the slider (5) towards the forward position (AP) determines a rotation of the first locking element (40) so that the first locking portion (44) can abut the first side portion (13) of the toe (3) of the ski boot (9) and that a translation of the slider (5) towards the rearward position (BP) determines an opposite rotation of the first locking element (40) so that the first locking portion (44) can disengage from the first side portion (13) of the toe (3) of the ski boot (9); it comprises a second locking element (50) that: comprises a second intermediate portion (51), a third end of the locking element (52) and a fourth end of the locking element (53) that is opposed to the third end of the locking element (52) with respect to the second intermediate portion (51); at the second intermediate portion (51) it is rotatably coupled to the base (2); at the third end of the locking element (52) it is provided with a second locking portion (54) to lock a second side portion (14) of the toe (3) of the ski boot (9), which is opposed to the first side portion (13) of the toe (3) of the ski boot (9); at the fourth end of the locking element (53) it is constrained to the slider (5), such that a translation of the slider (5) towards the forward position (AP) determines a rotation of the second locking element (50) so that the second locking portion (54) can abut the second side portion (14) of the toe (3) of the ski boot (9) and that a translation of the slider (5) towards the rearward position (BP) determines an opposite rotation of the second locking element (50) so that the second locking portion (54) disengages from the second side portion (14) of the toe (3) of the ski boot (9); the first locking element (40) and the second locking element (50) are designed such that when the slider (5) is translated towards the forward position (AP), the abutment of the first locking element (40) with the second side portion (14) of the toe (3) of the ski boot (9) and the abutment of the second locking element (50) with the second side portion (14) of the toe (3) of the ski boot (9) jointly determine the locking of the toe (3) of the ski boot (9) between the first locking element (40) and the second locking element (50).

3. Telemark binding (1) according to any of the preceding claims, wherein: it comprises first elastic means (110) that are interposed between the base (2) and the slider (5), to move the slider (5) towards the rearward position (BP) and thus keep the first hook (7) distanced from the rear protrusion (49) of the forefoot of the ski boot (9); the service lever (6) is designed such that from the configuration (B) of the toe (3) of a ski boot (9) locked, and after the first rotation, a subsequent second rotation of the service lever (6) in the same second direction of rotation (R2) brings the first end (31) of the service lever (6) to abut the slider (5) and to move the slider (5) against the action of the first elastic means (110).

4. Telemark binding (1) according to any of the preceding claims, wherein: it comprises joining means (15) that are connected to the first jaw (11) and the second jaw (12); it comprises second elastic means (10) that are arranged to stabilize the position of the first jaw (11) and the second jaw (12) to assume the configuration (A) ready to receive the toe (3) of a ski boot (9) and the configuration (B) of the toe (3) of a ski boot (9) locked; the actuation lever (4) is connected to the joining means (15) such that, starting from the configuration (B) of the toe (3) of a ski boot (9) locked, a rotation of the same actuation lever (4) in the first direction of rotation determines the release (7) of the toe (3) of the ski boot (9) from the first pin (21) and from the second pin (22), thus reaching the configuration (A) ready to receive the toe (3) of a ski boot (9).

5. Telemark binding (1) according to any of the preceding claims, wherein: it comprises first guide means (81, 82, 83, 84); it comprises a first carriage (71) that is carried by the slider (5) and that is slidable along the first guide means (81, 82, 83, 84); it comprises third elastic means (72) that are interposed between the first carriage (71) and the base (2), to move the first carriage (71) towards the first end (31) of the service lever (6); it comprises a first stop (73) that is carried by the base (2) and that is arranged to act as an end stop for the first carriage (71), against the action of the third elastic means (72), when the first jaw (11) and the second jaw (12) assume the configuration (A) ready to receive the toe (3) of a ski boot (9) and when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the first rotation in the second direction of rotation (R2), reaching the first position (FP); the first stop (73) is also arranged to disengage from the first carriage (71) when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the second rotation in the second direction of rotation (R2), with the consequent movement of the slider (5) that pulls the first carriage (71), so that the same first carriage (71) can be moved by the third elastic means (72) towards the first end (31) of the service lever (6); the first carriage (71) is provided with a first abutment (74) to abut the first end (31) of the service lever (6) at least contributing to stabilize the service lever (6) in the second position (SP), when the first jaw (11) and the second jaw (12) assume the configuration (B) of the toe (3) of a ski boot (9) locked and the service lever (6) makes the second rotation in the second direction of rotation (R2).

6. Telemark binding (1) according to the previous claim, wherein: the first abutment (74) forms a first inclined plane that is arranged such that only starting from a first predetermined torque, applied to the service lever (6) to rotate the same service lever (6) in a direction opposite to the second direction of rotation (R2), it is possible for the first end (31) of the service lever (6) to travel along the first inclined plane until the service lever (6) reaches the first position (FP) again.

7. Telemark binding (1) according to claim 5 or 6, wherein: the first carriage (71) and the slider (5) jointly form at least one seat (75, 76) to receive the third elastic means (72); the at least one seat (75, 76) comprises a lateral wall that in turn comprises a first lateral wall portion (77) that is part of the first carriage (71) and a second lateral wall portion (78) that is part of the slider (5); the at least one seat (75, 76) also comprises: a first bottom portion (79) that is part of the first carriage (71) and on which the third elastic means (72) press, which in turn abut the base (2); and a second bottom portion (80) that is part of the slider (5); the second bottom portion (80) is farther from the mouth (69) of the at least one seat (75, 76) than the first bottom portion (79), so that the second bottom portion (80) represents an end stop for the third elastic means (72).

8. Telemark binding (1) according to claim 5, 6 or 7, wherein: it comprises a first engagement unit; the first guide means (81, 82, 83, 84), the first carriage (71), the third elastic means (72), the first stop (73) are part of the first engagement unit; the first engagement unit is arranged on a first side of the slider (5); it comprises a second engagement unit that is like the first engagement unit and that is arranged on a second side of the slider (5), which is opposed to the first side of the slider (5), to jointly cooperate with the first engagement unit.

9. Telemark binding (1) according to any of the preceding claims, wherein: the longitudinal member (8) is arranged to slide on the ski when the base (2) is fixed to the ski and when the slider (5) moves the same longitudinal member (8).

10. Telemark binding (1) according to any of the preceding claims, wherein: the base (2) comprises a first base wall (45) and a second base wall (46) that is opposed to the first base wall (45); the front portion of the slider (5), with respect to the tip of a ski when the base (2) is fixed to the ski, is arranged between the first base wall (45) and the second base wall (46); the first base wall (45) forms a first sliding track (47); the second base wall (46) forms a second sliding track (48); the first base wall (45) and the second base wall (46) are arranged such that the first sliding track (47) and the second sliding track (48) slidably receive the first end (31) of the service lever (6) when the service lever (6) makes the first rotation in the second direction of rotation (R2) and when the service lever (6) makes the second rotation in the second direction of rotation (R2).

Images