EP0692286A1 - Skiboot and binding combination - Google Patents

Abstract

The fixing includes retaining jaws (10,11) for the boot ferrule and aligned with the median plane by a return spring (15). The jaw has a pivot (19) for modifying the disengagement threshold of the jaw from one side or the other of the median plane. The shoe has local reference markers on the right and left of the boot. These are a part of the ankle or sole and are recessed on either side of the median plane. The jaw has mechanical sensors (38) which are activated differentially by the reference markers. Mechanical connectors (30,31) between the sensor and the pivot modify the disengagement threshold on one displacement side of the jaw. This is determined by the mechanical adjustment of the boot. <IMAGE>

Description

The invention relates to an assembly of a shoe and a retaining element intended to retain the leg of an athlete on a gliding board, and in particular that of a skier on a ski.

The invention also relates to a shoe and a retaining element of this assembly considered in isolation.

In the case of alpine skiing, it is known to retain a boot resting on a ski by means of a front fixing or retaining element and a rear fixing or retaining element which retain front and rear end caps of the shoe. These two fastening elements comprise a jaw carried by a body. The jaw is movable in response to the stresses of the shoe against the return force of a spring which opposes its movement.

The stiffness of the spring is adjustable, so that the shoe is released from the fastening element for a stress exceeding a determined stress threshold. This threshold beyond which the jaw lets the shoe escape is commonly called the trigger threshold.

To be able to use shoes with the various fastening or retaining elements on the market, the shape of the front and rear toe caps of the shoe has been standardized. In the ISO standardization system, the current standard has the reference ISO 5355. The fastening elements, on the other hand, are designed to be compatible with the standardized zones of the shoe and to ensure the release of the shoe at release values determined.

At the front, a shoe is retained by a front fastening element, the jaw of which is movable at least laterally towards the inside or outside of the foot, which corresponds to a torsional stress on the skier's leg.

Current bindings have an equal trigger threshold inward and outward. However, we know that the skier's knee, which is stressed during a torsional fall, is more fragile for an inward rotation of the foot than for an outward rotation.

To take this into account, fastening elements have been proposed which have a different triggering threshold according to the direction of tilting of the jaw. Such elements are for example described in French patents FR 1 503 847, 1 503 848, 1 503, 849, or also in the German patent application published under the number 18 07 074.

The major drawback of this type of device is that it requires a pairing between the shoes and the skis, that is to say that the right and left skis must be necessarily identified, and that the skier must put on the right ski with her right shoe and left ski with left shoe. It should especially not reverse the skis to the boot, otherwise, the opposite effect is obtained which can have serious consequences. However, according to the standard, the shoe toe caps are symmetrical with respect to a median vertical plane. As a result, there is a priori no need to distinguish and identify the right ski and the left ski. It is therefore up to the skier to pay attention to the direction in which he presents his skis for booting. This represents a big risk.

The problem posed by the invention is to improve the protection of the skier. It consists in improving this variable trigger threshold effect as a function of the direction of the torsional stress.

The invention proposes to solve this problem and obtain this effect regardless of the direction in which the skis are fitted, to the right or to the left.

The problem is solved by the assembly of a shoe and a fastening element as defined in claim 1.

It is also resolved by the binding element as defined in claim 10, by the shoe as defined in claim 15, and by the pair of shoes as defined in claim 16.

According to the invention, the retaining element is designed to cooperate with a specially adapted shoe which is equipped with a different reference depending on whether it is a right shoe or a left shoe. We know that if it is possible to exchange the right and left skis because the shoe tips are symmetrical, it is not reasonably possible to exchange the right and left shoes.

The retaining element has a means controlled by feelers to unbalance the trigger thresholds at will on one side or the other according to the information carried by the shoe and perceived by the feeler (s).

The information carried by the pins indicates to the fastening element if the shoe engaged is a right shoe or else a left shoe. These marks are identified by feelers of the retaining element. Depending on the position of the feelers, the means of the retaining element make the trigger threshold stronger or weaker on one side or the other to facilitate the release of the boot in the direction of torsional stress of the leg where the knee is weakest. In the other direction of torsion, the maintenance of the shoe is ensured more firmly than in the first direction. This improves the protection of the skier and reduces nuisance trips, because the binding element reacts differently depending on whether the foot pivots inward or outward. According to the invention, the retaining element reacts automatically, so that that it is not necessary to locate the right and left skis, nor to pair a ski with a shoe. We avoid any risk of inversion.

According to a preferred secondary characteristic, the feelers of the retaining element are designed to have no effect on the jaw mechanism in the case where a shoe without mark is engaged, or else the feelers act in the same way in both directions movement of the jaw, so that the retaining element remains compatible with a standard shoe, ensuring a symmetrical release of the shoe.

According to another preferred secondary characteristic, the shoe has a mark which is provided so as not to disturb the operation of a standard fastening element, that is to say an element which is not equipped with the identification means nor of the control means.

The invention will be better understood by referring to the description below and to the accompanying drawings which form an integral part thereof.

Figure 1 shows a side view in section of a retaining element according to a non-limiting embodiment of the invention.

FIG. 2 represents a top view and in partial section of the fixing element of FIG. 1.

Figure 3 is a side view of the retaining element and more particularly shows an identification probe.

Figure 4 is a top view in section which illustrates more particularly the connection between the identification probes and the jaw return mechanism.

Figure 5 is an exploded view which shows the kinematic chain of the connecting elements between the feelers and the jaw return mechanism.

Figure 5a shows schematically an alternative embodiment.

Figure 6 is a partial top view of a shoe front compatible with the retaining element of the previous figures.

Figures 7 and 8 illustrate the operation of the device.

Figures 9 and 10 are alternative embodiments of the shoe.

FIG. 11 schematically illustrates an alternative embodiment.

FIG. 12 represents in top view and in section a retaining element according to an alternative embodiment of the invention.

FIG. 13 is a side view in section of the retaining element of FIG. 12.

FIG. 14 is a perspective view of the front of a shoe intended to cooperate with the retaining element of FIG. 12.

Figure 15 is a sectional view at the feelers.

The retaining element illustrated in the figures, by way of nonlimiting illustration of the invention, is largely known from the patent application published under the number FR 2 517 214.

This element comprises a base 1 designed to be secured to the ski by any suitable means, for example screws.

The base carries a pivot 2 surmounted by a screw 3. In a known manner, the body 6 of the fixing element is somehow hooked to the head of the screw, and by more or less screwing the screw into the pivot , it is possible to adjust the height of the body in relation to the ski. The base and the screw form on the rear two support lines against which the body 6 of the retaining element is supported. In known manner, the support lines converge towards the head of the screw, and the body is supported on the pivot by three zones or points, two marked 4a and 5a located in the lower part of the pivot, and the head 3a of screw 3. It is these three zones which form, taken two by two, the two converging support lines.

On its front face, the base has a transverse face 8 against which the return spring 15 of the retaining element exerts its action.

Towards the rear, the body has a shoe retaining jaw. The jaw comprises two wings 10 and 11 which form with the body a one-piece assembly, or quasi-one-piece if one takes into account the means making it possible to adjust the angular opening of the wings. These means are known and are not referenced in the figures.

The wings 10 and 11 provide lateral retention of the shoe. Given their position, the wings 10 and 11 retain the shoe by what is called a grip on the upper. The standardized toe of the shoe has in fact in a known manner a lower part of the sole, surmounted by an upper part which forms the base of the upper. It is on this last part that the wings 10 and 11 exert their action. Of course, this is not limiting, and the other grip of the toe, called grip on the sole is also possible. The vertical retention is provided by the lower part of the wings which provides a bearing face for the upper part of the sole. This is also not limiting.

The jaw also includes a central support point 13 against which bears the most advanced part of the upper of the shoe.

Forward, the binding element has an elastic return mechanism of the body in position aligned with the vertical and longitudinal median plane defined by the longitudinal direction of the ski.

This mechanism comprises, in a known manner, a spring 15 housed in a longitudinal recess in the body which is closed by a threaded plug 16. One end of the spring bears on this plug, the screwing of which makes it possible to adjust the hardness of the retaining element, c ' that is to say the initial compression of the spring 15.

The other end of the spring acts on the face 8 previously described, via a piston 18, and an intermediate flap 19 which will be described later. Preferably, the piston has on its bearing face two lateral chamfers 18a and 18b, which are slightly inclined. These chamfers are more particularly visible in FIG. 5. Thus, the bearing face of the piston has a central face 18c of triangular shape, and two lateral chamfers 18a and 18b.

In known manner, the spring 15 maintains the body in a stable position aligned with the median plane. Under the action of the lateral stresses of the shoe, the jaw and the body tend to pivot around one or the other of the support lines of the pivot 2, against the restoring force developed by the spring. In the event of excessive stress, the amplitude of rotation of the jaw becomes sufficient to allow the shoe to be released. The stress threshold beyond which the jaw releases the shoe is called the trigger threshold. This threshold depends directly on the nature of the spring and its initial compression.

The retaining element has means for varying the triggering threshold of the retaining element at will on one side or the other. These means act only on the right and left trigger like a kind of rocker to vary one with respect to the other. These means will now be described.

In the embodiment shown in the figures, these means comprise a flat flap 19 which is interposed between the piston 18 and the face 8 of the pivot 2 support. Thus, the piston 18 is pushed back against the face 8 of the pivot 2 by through component 19.

Advantageously, the flap 19 has laterally two beads 20 and 21 whose spacing is substantially equal to the width of the face 8, so that in the aligned position, the flap is freely fitted on the face 8 and pressed against this face. The shutter 19 is supported on one or the other bead in the event of the shutter pivoting relative to the pivot. In addition, in its upper part, the flap has a return 22 which maintains the flap vertically by pressing against the piston 18.

The bearing surface of the flap 19 on the pivot 2 is wider than the bearing surface of the piston 18 on the flap 19.

Means make it possible to control the movement of the flap, by associating it either with the pivot, or else with the body of the retaining element.

Thus, the flap has in its upper part a tab 25 projecting, aligned with the median plane. On each side of the cleat is a movable latch 26, 27 mounted on a transverse articulation 28 carried by the body. Each latch is movable between a low position where it blocks the relative movement of the cleat on the side where the latch is located, and a high position where it allows the relative movement of the cleat. When the body is rotated, if the flap is retained by a latch, it is forced to pivot with the body. If the latch in question is raised to the high position, the flap remains pressed against the pivot.

The latches 26 and 27 are controlled by rockers 29 and 30 which are housed in the body. The rocker arms are shown in the form of a rod 31, 32 oriented approximately in a longitudinal direction, and carried at each of its ends by bearings of the body.

The rod carries lugs 33, 34 which are engaged under the latches 26, 27, so as to be able to lift them by a rotation of the rod.

The rods 30 and 31 also carry lugs 35, 36 which are oriented downwards. These legs control the rotation of the rods.

The legs are driven by two feelers 37, 38 shaped like fingers located under the wings 10 and 11, and articulated around substantially vertical axes.

The feelers have a small arm in front of their articulation axis by which they act on the rocker arms 29 and 30.

Preferably, one or more springs, not shown, resiliently and individually recall the latches in the low position where they block the cleat 25. This or these springs also act directly or indirectly on the rocker arms and feelers to elastically recall these feelers in a position where they tend to close towards each other.

In addition, advantageously, the legs 35 and 36, or else the legs 33 and 34 are relatively flexible.

The feelers 37 and 38 are provided to feel the shoe at the front of the sole. In the absence of a shoe, they leave between them an opening smaller than the width of a standardized sole.

The shoe intended to cooperate with the retaining element, called a special shoe, has a mark which identifies it as a right shoe or a left shoe. In the following case, this reference is active, that is to say that it acts mechanically on the feelers of the fastening element to inform the element of the right or left quality of the special shoe which is engaged.

The front part of a special shoe 39 intended to cooperate with the retaining element is shown in FIG. 6. The shoe has a sole front 40 of which a lateral part 41 has been reduced relative to the other lateral part. The front part of the sole is therefore no longer symmetrical. Given the configuration of the retaining element, the shoe represented in FIG. 6 with a reduced lateral part on the sole is a left shoe. It goes from the associated right shoe has a reduced lateral part on the right of the sole.

The lateral part 41 has been reduced so that when the shoe is engaged in the jaw, the feeler 37 located on its side is not moved. On the contrary, the feeler 38 located on the unreduced side 42 of the sole is moved. This movement causes the rocker arm 30 to rotate and the latch 27 to be raised. The latch 26 remains, on the contrary, lowered.

FIG. 7 illustrates the operating mode of the retaining element under the effect of a stress leading to the opening of the jaw towards the inside of the foot. This stress causes the skier's leg, more particularly at the knee, a torsion, the direction of which has been shown diagrammatically by arrow 44. By this torsion, the foot tends to pivot outwards. It is in this direction of torsion that the knee is most resistant for a left leg.

As previously described, the latch 26 is lowered, so that the flap 19 is linked to the body for this direction of rotation. The body 6 drives the flap 19 in rotation, the flap deviates angularly from the pivot, which causes the piston 18 to slide and the spring 15 to compress. The trigger threshold for this direction of rotation of the body is defined by the force that the shoe must overcome to cause a pivoting of the body which allows it to escape the jaw. This force depends on the compression of the spring, and therefore on the stroke that the piston must travel until release.

FIG. 8 represents the shoe 39 urging the retaining element in the other direction of pivoting of the body. This direction corresponds to a twist of the leg shown schematically by the arrow 45. For a left leg, the knee is more fragile in this direction of twist than in the previous direction.

For this direction of rotation of the body, the latch 27 has been raised because the shoe sole has repelled the feeler 38.

The flap 19 is not forced thereby to accompany the rotation of the body, and it remains stuck against the face 8 of the pivot 2. The body laterally drives the piston which slides along the front face of the flap 19. This causes compression of the spring, but this compression is more moderate than in the previous case, taking into account the dimensions of the bearing face of the piston, and also taking into account the lateral chamfers 18a and 18b. The stroke of the piston necessary to bring the jaw and the body to the release of the shoe is therefore smaller than in the previous case. The release of the shoe is therefore easier on this side.

It should be emphasized that the actuation of the feelers and latches involves very low energies, so that these elements only very slightly disturb the release of the shoe.

Advantageously, if a standard shoe is engaged in the retaining element which has been described, the two feelers 37 and 38 are pushed back, which raises the two latches 26 and 27. The retaining element has a threshold substantially identical trigger for the two directions of solicitation of the shoe. For the construction described, these thresholds correspond to the lowest preceding threshold. However, it could be otherwise.

Conversely, if the special shoe 39 is engaged in a standard retaining element operating by grip on the upper, that is to say whose jaw retains the toe of the shoe sole by the upper part, there will be no change in the connection between the shoe and its retaining element. If the retaining element operates by a grip on the sole, an adjustment in the opening of the wings of the jaw will undoubtedly be necessary, because the sole of the special shoe will have been locally reduced.

To remedy this, FIG. 9 shows an alternative embodiment of the shoe according to which the reduced zone of the shoe which prevents the movement of the feeler is formed by a groove 48 produced for example at mid-height of the sole, at the level d 'an angle. This groove does not modify the general external contour of the sole, so that such a shoe is also compatible with retaining elements with grip on the sole.

For the shoe shown in FIG. 7, the feeler will preferably be a rod situated at the height of the groove, but with a diameter less than its width. The rod can advantageously be flexible.

FIG. 10 represents another alternative embodiment of the shoe according to which the sole has a notch 50 in its lower part. However, in its upper part the sole keeps a standardized outline, and therefore the shoe remains compatible with traditional retaining elements .

The construction which has just been described is not limiting and many variants are possible.

In particular, for the previous construction, it is possible to reverse the direction in which the latches are actuated by the probes, that is to say that a probe could control not the raising but the lowering of a latch.

Figure 5a schematically illustrates such a situation. The tab 34 'of the rocker arm 30 acts on the latch 27' in front of its transverse articulation axis. At rest, the latch 27 'leaves the shutter free. If the probe which controls the latch 27 'is actuated by the shoe sole, it lowers the active part of the latch towards the flap. The flap must then follow the movement of the body. In this case, if a standard shoe is engaged, the two feelers are actuated. The flap moves with the body in both directions of body rotation. If a special shoe is engaged, only one probe is actuated. On the side where the probe is not actuated, the triggering threshold of the fixing element is lowered. In this case, the lateral edges of the sole, which are reduced, must be inverted on both shoes. One effect of this variant is that the actuation of a probe no longer causes a decrease, but an increase in one of the only triggering devices.

Figure 11 shows schematically an alternative embodiment. According to this variant, the probes 51 and 52 operate optically and differentially detect an optical mark 53 on the shoe 55, for example a graphic or a color mark located on one side of the shoe.

The probes are connected to an electronic or electrical control unit 54 which controls one or the other of two electromagnets 56 and 57 actuating one and / or the other of the two latches 58 and 59.

The optical mark 53 does not in any way modify the mechanical connection between the shoe and the retaining element, so that the special shoe remains compatible with a standard retaining element.

For this variant, the detection is carried out for example by photoelectric cells, but it could also take place by field effect, or any other suitable means.

Another variant is illustrated in FIG. 12. The structure of the retaining element shown is largely known from the French patent application published under the number FR 2 640 516.

The retaining element has a body 61 intended to be secured to the ski. The body carries two wings 62 and 63 for retaining the boot, hinged to the body independently around substantially vertical axes.

The wings extend beyond their axis of articulation by a small arm 62a, 63a, which bears on a piston 65 housed in a longitudinal recess 66 of the body. In known manner, the piston carries at the top of its rear part two shoulders against which the small arms 62a and 63a of the wings bear. A spring 67 is opposed by its compression to the displacement of the piston caused by an opening of one or the other of the wings.

The piston 65 is guided along the housing 66 in its front part, for example by means of studs in the room. On the other hand, its rear part has a possibility of lateral movement inside the housing 66.

The lateral movement of the piston 65 is controlled by a longitudinal rod 68. The rod is articulated around a vertical axis 69 carried by the base of the body, and it is connected to the piston 65 by a vertical pin 70. For example, as this is shown in the figures, the pin 70 is carried by the rod, and it circulates in a longitudinal lumen of the piston 65, the length of which corresponds approximately to the longitudinal stroke of the piston.

The rod 68 can oscillate angularly in a horizontal plane around the axis 69, which drives the rear end of the piston on one side or the other of the median plane. This has the effect of varying the length of the lever arm with which each of the wings biases the piston. For example, if the rear end of the piston moves upwards in the figure, the wing 63 will act on the piston with a longer lever arm, and the wing 62 with a shorter lever arm. The boot will be more easily released by the wing 62 than by the wing 63. It should be noted that according to the present embodiment, the modification of the triggering thresholds of the retaining element results on the one hand in a reduction , and on the other by an increase in the trigger threshold.

To facilitate lateral movement of the rear of the piston, preferably, the support of the small arms 62a and 63a of the wings is done by means of a roller carried by the shoulders of the piston.

The oscillation of the rod 68 is controlled by feelers which are provided to detect an asymmetry of the shoe.

The illustrated embodiment represents two feelers 72 and 73 located a little in front of the support plate 74 of the shoe. Each probe extends transversely on one side of the median plane, and it is articulated around a horizontal and longitudinal axis carried by the base of the retaining element. These axes of articulation are located near the vertical and longitudinal median plane. The rear end of the rod is engaged between the lower part of the two feelers, and a compression spring 76, 77, or any other compressible means, is interposed in a transverse direction between the end of the rod and each of the feelers.

Under the effect of the springs, and in the absence of a shoe, the feelers 72 and 73 are raised above the horizontal. Optionally, a stop not shown limits their upward movement. The rear end of the rod 68 is therefore kept in alignment with the median longitudinal plane. If one of the feelers is lowered, for example the feeler 73, the rod 68 will be pushed back towards the other feeler by the spring 75. This oscillation of the rod will shift the piston and produce the change of the arms to raise the wings previously described.

Figure 13 shows the front of a shoe, called a special shoe, intended to cooperate with the retaining element. The front of the sole 80 has over substantially half of its width a notch 81 which locally reduces the thickness of the sole. This notch has a substantially constant depth and it opens downwards.

When the shoe is engaged in the retaining element of Figures 12 and 13, the probe 73 located on the side of the notch is not lowered. By cons, the other probe 72 is lowered, hence an upward movement of Figure 12 of the rear end of the piston 65 according to what has been previously described. The wing 62 will oppose, under these conditions, a lower resistance to the release of the boot than the wing 63.

To obtain better protection of the knee in the event of an inward rotation of the foot, the notch 81 is produced as shown in FIG. 14 for a left shoe. It is made on the other side of the sole for a straight shoe.

The retaining element which has been described is however completely symmetrical, that is to say that it is compatible indifferently with a right shoe, or else with a left shoe.

Advantageously, if a standard shoe is engaged in the retaining element of FIGS. 12 and 13, it is the two feelers 72 and 73 which are lowered simultaneously. The two springs 76 and 77 are compressed, and the rod remains in alignment with the median longitudinal plane. The piston 65 also remains aligned with this plane. There is no modification of the arms to raise the wings, and the triggering threshold of the retaining element remains the same for the two sides of release of the shoe.

If the shoe of FIG. 14 is engaged in a standard retaining element, there will be no significant change in the conditions of retaining the shoe for either of the modes of retaining the shoe, c that is to say, grip on the upper and grip on the sole.

Many other variants are also possible with regard to the position of the probes and of the shoe identification zones that they detect. Thus, the identification zones could be located under the sole, towards the front, the middle, or even the rear of the shoe, the feelers being located accordingly. They could also be located on the stem, above the standard area. The mark allowing the identification of the shoe could be a raised area instead of a hollow area.

Finally, the invention applies to the different types of construction of retaining element, in particular, elements with fixed body and independent jaw wings, elements with fixed body and jaw wings linked in displacement, wing elements. or jaw whose opening is progressive against the return force of a spring, or those whose opening is controlled by a movable lock.

The invention also applies to shoe retaining elements which have specific means of compensating or releasing the shoe in the case of combined falls before torsion and rear torsion.

In general, the invention encompasses all the constructions, their equivalents and their variants as defined according to the appended claims.

Claims (16)

Assembly of a boot and a boot retaining element on a gliding board, in particular a ski boot and a ski retaining element, the boot having at one of its ends a toe by which the retaining element releasably retains it, the end piece extending on either side of a vertical and longitudinal median plane, the retaining element having a jaw (10, 11, 62, 63 ) retaining the end piece, returned by a return spring (15, 67) in a position aligned with said median plane, the jaw being movable against the return force of the spring, in response to the stresses on the end piece, laterally on one side or the other of said plane, so as to release the end piece beyond a determined stress threshold said trigger threshold,
characterized by the fact that the retaining element has a rocking means (19, 26, 27, 58, 59, 68) for modifying at will the triggering threshold of the element for lateral movement of the jaw by a on either side of said plane,
that the shoe locally has a reference (41, 42, 48, 53, 81) differentiated according to whether it is a right or left shoe,
that the retaining element has feelers (37, 38, 51, 52, 72, 73) designed to be actuated in a differentiated manner by the reference of the shoe,
and a connection (30, 31, 54, 56, 57) between each probe and the rocking means for modifying the triggering threshold at least on one side of displacement of the jaw which is determined by the mechanical reference of the shoe. Assembly according to claim 1, characterized in that the mark (41, 42, 48, 81) of the boot is a mechanical mark and that the feelers (37, 38, 72, 73) are actuated mechanically by the mark of the shoe. Assembly according to claim 1, characterized in that the mark (53) of the shoe is optical and that the feelers (51, 52) are photoelectric reading cells. Assembly according to claim 2, characterized in that the mechanical reference of the shoe is a part (41, 48) of upper or sole recessed with respect to the symmetrical part (42) situated on the other side of the median plane. Assembly according to claim 2, characterized in that the mechanical mark of the shoe is a groove (48) or a notch (50) produced inside the standardized outline of the end of the shoe. Assembly according to claim 1 or 2, characterized in that the retaining element has two movable feelers (37, 38) which are designed to cooperate with the reduced zone (41) and its symmetrical zone (42). Assembly according to claim 6, characterized in that the feelers (37, 38) act by increasing the triggering threshold of the retaining element. Assembly according to claim 6, characterized in that the feelers act by reducing the triggering threshold of the retaining element. Assembly according to claim 6, characterized in that the feelers (72, 73) act by increasing the trigger threshold on one side and decreasing the trigger threshold on the other. Element for retaining a boot on a gliding board, characterized in that it is provided for the assembly defined in any one of the preceding claims. Element according to claim 10, the jaw (10, 11) of which is carried by a body (6) movable around a pivot (2), the spring bears on the pivot, characterized in that the rocker means for modifying the triggering threshold comprises a flap (19) interposed between the end of the spring, the flap carrying a cleat (25), and two movable latches (26, 27) carried by the body (6) and located on each side of the cleat (25) to connect the flap sometimes to the pivot, sometimes to the body. Element according to claim 10 for the assembly defined in claim 4, characterized in that the jaw has two wings (10, 11), and that the feelers (37, 38) are located under the wings. Element according to Claims 10 and 11, characterized in that the connection between the feelers (37, 38) and the latches (26, 27) is produced by a rocker arm (29, 30) carried by the body (6). Element according to claim 10, the body (61) of which carries two independent wings (62, 63) connected to a piston (65) movable against the force developed by a spring (67), characterized in that the end of the piston has on the side of the wings a lateral movement, and that the feelers control the lateral movement of said end of the piston on one side or the other of the median plane. Shoe, in particular alpine ski boot, characterized in that it is provided for the assembly defined according to any one of claims 1 to 9. Pair of boots, in particular alpine ski boots, provided for the set defined according to any one of claims 1 to 9, characterized in that the mechanical references of each shoe are symmetrical to one another.

Images