FR2666008A1 - SPORT SHOE WITH ARTICULATED COLLAR. - Google Patents

Abstract

Sports shoe (1) consisting of an upper (2), a stiffener (4) extending at least vertically towards the top of each side of the heel, and a rigid shaft (5) encircling at least the ankle and connected via its flanks (33b) to the stiffener (4) by two anchoring systems (6b) located on each corresponding side of the foot and permitting the rotation of the shaft (5) according to an axis which is substantially transverse relative to the upper (2) of the shoe (1), characterised in that at least one of the anchoring systems (6b) comprises means for varying the position of the flank (33b), corresponding to the shaft (5), relative to the stiffener (4). These means for varying the position of at least one of the flanks (33b) of the shaft (5) permit tilting of the shaft (5) relative to the median vertical plane of the shoe (1) and/or rotation of the shaft (5) around a substantially vertical axis.

Description

i The present invention relates to a sports shoe consisting of a

  sole, a rod mounted on this sole, a rigid buttress reinforcing the rod in the heel area, and a rigid collar encircling the ankle, and articulated on the buttress along an axis

  articulation substantially transverse to the longitudinal axis of the shoe.

  Such a shoe is described in FR 89 11936 in the name of the applicant. The articulated collar has the advantage, because of its rigid material, of increasing the lateral stiffness of the upper, therefore of maintaining the tibia in the transverse direction, while by allowing a rotation of the leg along an axis transverse to the longitudinal axis of the shoe This shoe is therefore advantageous when hiking or, in the case of a shoe

  i O cross-country skiing, when skiing, and especially when skating.

  However, such a shoe has a transverse rigidity which does not allow the shoe to adapt to the morphology of the user. This is particularly disadvantageous for users with varus or valgus feet. These users have the axis of the tibia inclined. , towards the inside of the foot, or towards the outside of the foot, with respect to the plane

  vertical median of the foot When using a rigid collar shoe of the type described above

  above, they close the collar around their tibia thanks to a closure system of this collar Consequently, the axis of the tibia coincides with the axis of the rigid collar In the case of a varus or valgus foot, the sole of the boot, and therefore the sole of the ski in the case of cross-country skiing, which are perpendicular to the axis of the collar, are no longer parallel to the ground, and are therefore no longer in contact with the latter, but inclined by In addition, the sole of the user's foot does not come uniformly into contact with the inner sole of the shoe. The distribution of pressure on the sole of the foot is therefore not natural, which affects comfort. of the user, as well as the control of the boot or the ski. The object of the present invention is to remedy these drawbacks by proposing a sports shoe, in particular for walking or cross-country skiing, which can adapt to the

  morphology of the user with regard to varus or valgus feet.

  Another object of the invention is to provide a shoe of the aforementioned type whose collar, normally rigid laterally, can be flexible laterally so as to allow the pivoting of the leg relative to the upper, along a substantially longitudinal axis. collar may be desirable when practicing the skater's step where lateral rigidity is necessary to generate support of the tibia on the shoe only on the inner side of the foot to accentuate the internal edge grip, the outer side of the collar being able to

be flexible.

  These objects are achieved by the invention, which consists of a sports shoe consisting of a rod, a buttress extending at least vertically upwards on each side of the heel, and a rigid collar encircling at least the ankle, and connected by its internal and external sides, located respectively on the internal and external side of the foot to the buttress by two internal and external anchoring systems, located on each corresponding side of the foot, and allowing the rotation of the collar along an axis substantially transverse to the longitudinal axis of the shoe The shoe according to the invention is characterized in that at least one of the anchoring systems comprises means for varying the relative position of the

  side, corresponding to the collar, with respect to the buttress.

  As a result, the axis of the rigid collar can be inclined relative to the vertical median plane of the rod, by an angle corresponding substantially to the inclination of the axis of the user's tibia relative to the vertical, or from any other angle making it possible to improve the practice of skiing by allowing, for example, the skier to accentuate his grip on the edge by tilting the plane of his ski relative to the snow, by voluntary inclination of his foot by

i O compared to his shin.

  Advantageously, the anchoring systems make it possible to anchor each side of the collar on the buttress, in a removable or non-removable manner and adjustable in various positions distributed over a segment substantially parallel to the axis of the rigid collar on the one hand from the inside, and on the other hand on the outside of the collar. According to a preferred embodiment, the variation means i 5 consist, on each of the sides, inside or outside of the collar, by an oblong groove, oriented in a direction substantially parallel to the collar axis, provided with at least one indentation on each of its vertical surfaces, and cooperating with a ring provided with two diametrically opposite toothed faces and pivotally mounted on a substantially transverse axis integral with the buttress The indentations of the collar can then be placed according to several positions on the toothed face of the ring The anchoring system is advantageously locked by means of retaining transversely of the sidewall on the buttress constituted by a retaining screw which transversely holds the side of the rigid collar

  on the ring gear by a transverse stop, this screw being screwed in the buttress.

  Thanks to these two anchoring systems, the collar can be anchored on its two sides in the same vertical position, the collar then retaining a vertical axis. This advantageously makes it possible to adjust the total height of the collar, by choosing the vertical position of the collar. anchoring thereof, which allows the user to choose the height of his shoe. The collar can also be anchored in two different vertical positions for the outer flank, and for the inner flank of the collar. The axis of the collar is thus inclined at a desired angle, relative to the vertical median plane of the shoe, corresponding to the morphology of the user. Furthermore, the ring being pivotally mounted on the axis integral with the buttress, the collar retains its possibility of rotation along an axis transverse to the longitudinal axis of the

  shoe, which allows forward and backward flexion of the leg relative to the foot.

  Furthermore, according to one aspect of the invention, the anchoring system comprises declutching means so as to allow movement in the vertical direction of the sides of the collar,

  so in the transverse direction of the user's leg.

  In fact, according to an advantageous embodiment, the ring has two smooth faces, and the ring can be pivoted by a quarter turn around the transverse axis secured to the buttress, so that its smooth faces are in sliding contact with the indentations There is then sliding of the indentations on these smooth faces. The side of the collar is therefore free in translation in a direction substantially parallel to the axis of the collar, and allows a

  angular movement of the collar in a plane transverse to the longitudinal axis of the shoe.

  The invention will be better understood and other characteristics of it will appear

  in the description below, with reference to the attached schematic drawing representing as

  nonlimiting examples, preferred embodiments, and in which FIG. 1 is a perspective view of a shoe according to the invention FIG. 2 is a view along F of a shoe according to the invention; 1 i O Figure 3 is a partial cross-sectional view of a first embodiment of the invention; Figure 4 is a detail side view of Figure 3 Figure 5 is a view along F of the invention in a first position Figure 6 is a view along F of the invention in a second position; Figure 7 is a side view of a detail of the invention in the sliding position Figure 8 is a side view of a detail of a second embodiment of the invention Figure 9 is a partial view in section of the second embodiment of the invention;

  Figure 10 is a side view of a detail of a third embodiment.

  Figure 11 is a side view of a detail of a fourth embodiment.

  FIG. 12 is a partial sectional view of FIG. 11.

  Figure 1 shows a cross-country ski boot 1 consisting of a rod 2 covering the instep, and mounted on a sole 3 the rod 2 is reinforced in the heel area by a buttress 4 This buttress 4 is extended vertically upwards into the region of the malleoli to advantageously protect them A rigid collar 5 extends the rod 2 towards

  the top to surround the ankle and keep it transversely.

  The outer sides 33 a and inner 33 b of the collar 5 are connected to the buttress 4 by an anchoring system 6 b, on the external side of the foot, as well as on the internal side thereof by an anchoring system 6 a, as shown in Figure 2 These two anchoring systems 6 a, 6 b allow the rotation of the collar 5 along an axis substantially transverse to the longitudinal axis of the boot 1, so as to accompany the skier's shin in flexion during practice of the ski The collar 5 is made integral with the tibia of the skier by clamping means 7 of the collar which may consist, for example, of a flange / flange system as shown. Furthermore, the two anchoring systems 6 a, 6 b include means for varying the

the position of the flank 33 a, 33 b.

  Figure 3 shows the constitution of these means of variation The side 33 of the collar 5

  comprises an oblong groove 8 extending substantially along the axis of the collar 5, that is to say

  say vertically in FIG. 3, and provided on its vertical faces with indentations 9 shown in FIG. 4 The buttress 4 has a projection constituting an axis 10 substantially transverse to the buttress 4 on which a ring 11 is mounted for free rotation. substantially square shape, comprises, as shown in Figure 4, two opposite faces and toothed 12 and two opposite faces and smooth 13 The teeth of the toothed faces 12 can engage in the indentations 9 of the groove 8, while the distance between the faces smooth 13 is such that the ring 11 slides freely while being guided in translation in the groove 8 transverse holding means of the flank 33 of the collar 5 on the buttress 4 are constituted by a holding screw 14, shown in FIG. 3, which is screwed into the buttress 4 which has a thread 15 which can be formed, not shown, by a threaded insert of more resistant material than that of the buttress 4, to reduce the wear of the buttress 4 The head of the retaining screw 14 constitutes 1 i O a stop 16 preventing the flank 33 of the collar 5 from disengaging transversely from the buttress 4 (to the right in the figure 3) The lining 34 protects the foot against the

buttress 4.

  To adjust the collar 5, vertically or angularly, the retaining screw 14 is unscrewed using a screwdriver in the case shown. This screw 14 may also have a knurling on its periphery, in a manner not shown, so as to be able to unscrew it without tools When the retaining screw 14 is detached from the buttress 4, the side 33 of the collar 5 can be pulled to the right so that the indentations 9 are no longer meshed with the toothed faces 12 of the ring 11 We can then move the flank 33 of the collar 5 vertically, and make it mesh with the toothed faces 12 of the ring 11 in a higher or lower position, by varying the distance ha, hb between the axis of rotation A of the collar 5 and the lower face 18 of the groove (FIG. 2) The retaining screw 14 is then screwed back so as to maintain the collar 5 on the buttress 4 in transverse direction. It will be noted that this embodiment advantageously makes it possible to have a collie r 5 which can be separated from the buttress 4, and is therefore removable so as to transform the shoe I with a high upper into a shoe with a lower upper. A retaining screw 14 could also be provided, not shown, with a stroke greater than l 'thickness of the collar 5, to allow removal of the meshing of the indentations 9 on the toothed faces 12 without detaching the screw 14 from the buttress 4 The retaining screw 14 thus constitutes a means of disengaging the system

anchor 6 a, 6 b.

  These anchoring systems 6 a, 6 b therefore make it possible to fix the sides 33 a, 33 b (FIG. 2) of the collar 5 on the buttress 4 in the vertical direction, by choosing the distances ha and hb according to a discrete variation of those -this We can thus advantageously anchor the sides 33 a, 33 b of the collar 5 so as to have equal distances ha and hb (FIGS. 2) The axis D of the collar 5 is then vertical We can vary this distance ha, hb in a given interval so as to vary the height H of the shoe 1 The user can thus choose this height H if he wishes to have a transverse support of the tibia over a large height H or over a small height H. As shown in the figure 5, the sides 33 a, 33 b of the collar 5 can be anchored so as to have hb> ha, which inclines the axis D of the collar 5 at an angle a, towards the external side of the foot, relative to the plane vertical center P of the shoe 1 The user can thus advantageously tilt the collie r 5 of an angle a corresponding to the inclination of its tibia, due to the varus foot, relative to the vertical Comfort is therefore advantageously improved, in particular in the case of walking shoes for which these systems can also be used for anchoring the collar The foot is in natural contact with the internal sole of the shoe 1. The external sole 3 is then uniformly in contact with the ground, which prevents tension of the foot in the shoe 1 and advantageously improves the yield during On the other hand, in the case of a ski boot 1, as shown in FIG. 1, the ski sole, not shown, is in uniform contact with the ground, which improves gliding.

when skiing.

  In the case shown in Figure 6, the sides 33 a, 33 b of the collar 5 are anchored so as to have hb <ha, which has the advantage of tilting the axis D of the collar 5 from an angle a to the side internal of the foot relative to the median vertical plane P of the shoe 1 This configuration is advantageous for a user with valgus feet, the collar 5 adapting thanks to the device according to our invention to its morphology The advantages provided by such a

  adaptation are identical to those provided in a configuration such as that of FIG. 5.

  FIG. 7 represents the anchoring system 6 a, 6 b, without its retaining screw 14, to facilitate understanding. The disengaged position of the discrete variation means of the anchoring system 6 a, 6 b is obtained by removing the screw. holding 14 by unscrewing it, then removing the flank 33 of the collar 5 so as to remove the meshing of the indentations 9 with the toothed faces 12 of the ring 11 It is also possible to unscrew the screw 14 of a stroke at least equal to the thickness of the collar 5, so that the flank 33 of the collar of the ring 11 can be removed without detaching the screw 14 from the flank 33 The ring 11 is then pivoted a quarter of a turn around its axis 10 The toothed faces 12 are then perpendicular to the faces

  of the oblong groove 8 comprising the indentations 9.

  The flank 33 of the collar 5 is replaced in position against the buttress 4 The smooth faces 13 of the ring 11 come into contact with the indentations 9 The retaining screw 14 is replaced by

  so as to maintain the collar 5 on the buttress 4 in transverse direction.

  The flank 33 of the collar 5 is thus free in vertical translation, the indentations 9 sliding on the smooth faces 13 of the ring 11 so as to constitute means for continuously varying the position of the flank 33 on the buttress 4, between two fixed limits by the upper 17 and lower 18 faces of the oblong groove 8 The distance between the smooth faces 13 must allow the sliding of the ring 11 in the oblong groove 8 of width

interior 1.

  This declutching has the advantage of giving the user the possibility of reducing the transverse rigidity of his shoe 1, on the external side of the foot, or on the internal side of the foot, or on both sides simultaneously. This gives a certain flexibility of the collar. 5 which can be advantageous during the practice of the skater's step o the transverse support ensuring support of the leg is necessary mainly on the internal side of the leg, the external side not requiring support and being able to remain flexible transversely During practice with such a step, it is therefore possible to disengage the means of discrete variation of the exterior anchoring system 6b and use the means of continuous variation thereof, while retaining the means of discrete variation of the interior anchoring system 6b meshed, so as to ensure an internal support and an external flexibility This allows the skier to accentuate his edge grip, internal for example, by tilting the plane of the sole relative to the plane of the snow This inclination, transmitted by the voluntary inclination of the vertical median plane of the foot relative to the vertical median plane of the tibia, makes it possible to transmit the vertical forces to the

  internal edge, without "retracted knee".

  It is also possible to place the two anchoring systems 6 a, 6 b in the position of free variation of the position of the sidewall 33 a, 33 b so as to have a shoe 1 of rigidity.

reduced transverse.

  FIG. 8 represents a second embodiment of the invention, in which the ring 11 has a smooth cylindrical outer surface 13 The toothed faces 12 have a single tooth In the position of continuous variation of the position of the flank 33, such a configuration generates less friction, therefore less wear between the indentations 9 and the smooth faces 13 of the ring 11, due to a reduced contact surface between the ring 11 and the indentations 9 In a manner not shown, the faces 17, 18 of the oblong groove could be formed by cylinder portions so as to follow the shape of the

ring 11.

  It is also possible to provide a ring 11 of the type shown in FIG. 10, that is to say having toothed faces 12 comprising several teeth, so as to facilitate positioning of the flank 33 of the collar 5 on the ring 11 when the position is changed. , and also to have better resistance to rupture of the ring 11 due to the large number of teeth engaged with the indentations 9 The ring 11 also has two smooth faces 13 having a radius of curvature greater than the internal half-width I of the groove so as to reduce the sliding surface of the ring II on the indentations 9 to limit wear and to reduce the frictional forces between the ring 11 and the

collar 5.

  FIGS. 9 and 10 also represent a solution aimed at replacing the retaining screw 14 of the first embodiment by a retaining cover 19, not shown in FIG. 10, also constituting the means for retaining the sidewall 33 on the buttress 4, and means for disengaging the anchoring system 6 a, 6 b This retaining cover 19 consists of a cylindrical body 20 provided at its ends with a lug 21, a cup 22 and elastic tabs 23 The buttress 4 comprises an orifice 24 (FIG. 10) provided with a longitudinal groove 25 extending over the entire height of the orifice 24, and a clearance 26 in the form of a quarter of a circle and of height less than that of the orifice 24 To maintain the flank 33 of the collar 5 on the buttress 4, the cylindrical body 20 of the retaining cover 19 is introduced into the orifice 24 of the buttress 4, so as to make the lug 21 coincide with the longitudinal groove 25. the cylindrical body 20 in the hole ice 24 up

  that the elastic tabs 23 come into contact with the end of the axis 10 of the buttress.

  We then press on the cup 22 so as to push the body 20 until the lug 21 coincides with the clearance 26, in doing so, we compress the elastic tabs 23 against the transverse surface 27 of the axis 10 We turn then the retaining cover 19 by a quarter turn so that the lug 21 engages in the clearance 26 The retaining cover 19 is then released The elasticity of the elastic tabs 23 due to their material and to their form, then urges the cylindrical body 20 so as to press the lug 21 to the right against the transverse surface 28 of the clearance 26 In this way, the retaining cover 19 is retained 1 O transversely in a stable position in its orifice 24, and the flank 33 of the collar 5 is therefore held in transverse direction on the buttress 4, with the possibility of rotation around the axis 10 In addition, during the rotation of the flank 33 of the collar 5 around the axis 10, the elastic tabs 23 are in contact with the tra surface nsversale 27 which is fixed, there is therefore no wear of the legs 23 during rotation This second embodiment has an adjustment

simple position of the collar 5.

  Another advantage of the second embodiment shown in Figure 9 is constituted by the transverse retaining means of the ring 11 on the buttress 4 The buttress 4 is integral with the axis 10 serving as an axis of rotation for the ring 11 This axis 10 has on its outer cylindrical surface a projecting ring 29 which cooperates with a groove 30 provided inside the ring 11 The ring 11 also has an internal chamfer 31 To position the ring 11 on the buttress 4, the latter is pressed ci so that the projecting ring 29 takes its place in the groove 30 by elastic deformation of the ring 11 The chamfer 31 serves as an engagement ramp for the projecting ring 29 This construction advantageously makes it possible to maintain the ring 11 transversely on the buttress 4, in particular during adjustment operations on the collar 5, which makes it possible not to lose this ring 11 In addition, the connection of the pin 10 with the ring 11 allows the rotation d e the latter around this axis 10, any connection allowing this rotation can be envisaged, in particular of

circlip type.

  Figures 3 and 9 each show a ring 11 having a crown 32 projecting radially The crown 32 has the advantage of constituting a part of larger dimensions than the toothed part of the ring 11, which advantageously facilitates gripping and handling during assembly of the anchoring system 6 a, 6 b Furthermore, this ring 32 also advantageously serves as a wear part interposed between the collar and the buttress 4, so as to avoid friction between these two parts, during the rotation of the collar 5 around its transverse axis This ring 32 therefore improves the operation

  but is not essential to it.

  The two embodiments make it possible to tilt the axis D of the collar 5 (FIGS. 5 and 6) towards the inside or towards the outside of the foot relative to the median vertical plane P of the foot, by an angle cc. This angle a is limited by the lengths la, lb of the oblong grooves 8 of the collar, this length fixing the vertical stroke of the ring 11. It is therefore possible to choose a large range of variation of the angle a by providing an oblong groove 8 of great length la or lb, or conversely a small range of variation of the angle a by providing a small length la or lb. It is advantageous to provide for example a range of approximately 10 degrees distributed in 5 degrees outwards, and 5 degrees inwards, which corresponds to the covered range

  by the morphology of the users.

  Furthermore, it is possible to provide oblong grooves 8 of different lengths 1a and 1b for the outer flank 33b and the inner flank 33a of the collar 5. It is also possible to have a hinge pin for the inner flank 33a or the outer 33 b of the collar 5 without anchoring system 6 a, 6 b of the type described, but only allowing rotation along a transverse axis of this flank 33 a, 33 b of the collar 5, the adjustment of the angular position of the collar 5 s' then performing on a single flank 33 a, 33 b of the collar 5, inside or outside, where is located

1 5 the anchoring system 6 a, 6 b.

  On the other hand, the ratio of the number of teeth of the indentations 9 to the length la, lb of the oblong groove 8 determines the fineness of the adjustment of the vertical position of the flank 33 a, 33 b of the collar 5 Thus, the more this ratio is high, the finer the adjustment, the positions being very close to each other, which has the advantage of offering precise adjustment

to the user.

  Furthermore, it is also possible to have a continuous variation of the position of the flank 33 a, 33 b of the collar 5, by providing an oblong groove 8 not having indentation 9, in a manner not shown, but whose vertical faces are smooth and allow the free sliding of a ring 11 of also smooth outer surface. Such a continuous variation can be provided on only one of the sides 33 a, 33 b of the collar, or on the two sides at the same time according to the desired effect. This continuous variation is also possible in the case where the smooth faces of the ring 11 are in contact with the indentations 9 of the oblong groove 8, as shown in FIGS. 7 and 8 It is also possible to provide for a removal of the ring 11, the guidance of the flank 33 of the collar 5 by means of its oblong groove 8 with smooth faces being effected directly on the axis 10 integral with the buttress 4 The transverse holding of the flank 33 of the collar 5 is also carried out by a holding screw 14 or a cover

maintenance 19.

  One can also provide an embodiment shown in Figure 13 and wherein the oblong groove 8 is formed in the buttress 4 The collar 5 comprises, on each of its sides 33, an axis projecting towards the inside of the shoe and , provided with a ring 11 pivotally mounted This ring 11 has toothed faces 12 which cooperate with indentations 9 Means for transversely holding the flank 33 of the collar 5 on the buttress 4 also consist of a retaining screw 14 of the type shown Figure 3, or a holding cover 19 of the type shown in Figure 9, the head of this screw or this cover

  then being located for example on the inner side of the shoe.

  The operation of this embodiment is identical to that of the previous embodiments Furthermore, this embodiment has the advantage of being made up of a collar whose sides do not have an unmasked through opening, which improved

the aesthetics of it.

  Another embodiment, shown in FIGS. 11 and 12, provides an oblong groove 8 which does not open into the sidewall 33 of the collar 5 A shoulder 35 makes it possible to hide the indentations 9, so as to improve the aesthetics of the collar An oblong groove 1 i O through 36 is provided in the flank 33 of the collar so as to allow the sliding of the

  flank 33 of the collar 5 on the cylindrical body 20 of the screw 14, or of the retaining cover 19.

  Not shown, an embodiment can also be provided in which the oblong groove 8 produced either in the collar 5 or in the buttress 4 is in an inclined direction relative to the axis of the collar 5 in the first case, or relative to the vertical in the second case The embodiment advantageously makes it possible to better adapt the collar to the morphology of the user, whose inclination of the tibia may exist relative to the longitudinal median vertical plane of the foot and also not relative to the Another transverse plane, for example in the case of a continuous variation of the position of the internal flank 33 a of the collar 5 on the buttress 4, to accentuate the internal edge grip, is constituted by the fact that the collar 5 can follow as closely as possible the movement of the tibia in relation to the foot.

Claims (18)

  1) Sports shoe (1) consisting of a rod (2), a buttress (4) extending at least vertically upwards on each side of the heel, and a rigid collar (5) connected by its inner (33 a) and outer (33 b) sides, located respectively on the internal and external side of the foot, at the buttress (4) by two internal (6 a) and external (6 b) anchoring systems, located on each corresponding side of the foot, and allowing the rotation of the collar (5) along a substantially transverse axis relative to the longitudinal axis of the upper (2) of the shoe (1), characterized in that at least one of the anchoring systems (6 a, 6 b) includes means (11, 8) for varying the relative position of the sidewall (33 a, 33 b), corresponding   of the collar (5), relative to the buttress (4).   2) Sports shoe (1) according to claim 1, characterized in that the position of the flank (33 a, 33 b) of the collar (5), relative to the buttress (4), is variable along a   direction substantially parallel to the axis D of the collar (5).   3) Sports shoe (1) according to claim 1, characterized in that the position of the flank (33 a, 33 b) of the collar (5), relative to the buttress (4), is variable along a   direction inclined with respect to the axis D of the collar (5).   4) Sports shoe (1) according to claim 1, characterized in that the means for varying the flank position (33 a, 33 b) are means for continuously varying (13, 8)   of the position of the sidewall (33 a, 33 b) concerned with respect to the buttress (4).   5) Sports shoe (1) according to claim 1, characterized in that the means for varying the flank position (33 a, 33 b) are means of discrete variation (12, 9)   of the position of the corresponding sidewall (33 a, 33 b), relative to the buttress (4).   6) Sports shoe (1) according to claim 5, characterized in that the means of discrete variation of the position of the sidewall (33a, 33b), consist of an oblong groove (8) substantially vertical made in the flank (33 a, 33 b) of the collar (5) and provided with at least one indentation (9) on each of its vertical faces, and with which a ring (11) cooperates comprising at least two opposite teeth capable of mesh in the indentations (9) of the oblong groove (8), this ring (11) being pivotally mounted around   a substantially transverse axis (10) integral with the buttress (4).   7) Sports shoe (1) according to claim 5, characterized in that the means of discrete variation of the position of the sidewall (33 a, 33 b) consist of an oblong groove (8) substantially vertical formed in the buttress (4), and provided with at least one indentation (9) on each of its vertical faces, and with which a ring (11) cooperates comprising at least two opposite teeth capable of meshing with the indentations (9) of the oblong groove (8), this ring (11) being pivotally mounted about an axis (10)   substantially transverse to the side (33 a, 33 b) of the collar (5).   8) Sports shoe (1) according to claim 4, characterized in that the means for continuously varying the position of the sidewall (33 a, 33 b) consist of an oblong groove (8) formed in the sidewall (33 a, 33 b) of the collar (5), and guided in translation on 1 1 a ring (11) pivotally mounted on a substantially transverse axis (10) integral with the buttress (4).   9) Sports shoe (1) according to claim 4, characterized in that the means for continuously varying the position of the sidewall (33 a, 33 b) consist of an oblong groove (8) formed in the buttress (4 ) and in which a ring (11), pivotally mounted on a substantially transverse axis (10) integral with the flank (33 a, 33 b) of the collar (5), is guided in translation.   ) Sports shoe (1) according to claim 1, characterized in that the means for varying the flank position (33 a, 33 b) are both means of discrete and continuous variation, the passage of the discrete variation to continuous variation and vice versa   by means of declutching means of discrete or continuous variation.   11) Sports shoe (1) according to claim 10, characterized in that the declutching means of the variation means also constitute holding means   transverse of the sidewall (33 a, 33 b) on the buttress (4).   1 5 12) Sports shoe (1) according to the preceding claims, characterized in that   the transverse holding means of the sidewall (33 a, 33 b) on the buttress (4) are constituted   by the stop (16, 27) of a holding element (14, 19) anchored in the buttress (4).   13) Sports shoe (1) according to claim 12, characterized in that the declutching means are constituted by the holding element (14, 19) whose possible transverse stroke is substantially greater than the thickness of the sidewall (33 a, 33 b) of collar (5).   14) Sports shoe (1) according to any one of the preceding claims,   characterized in that the ring (11) has two opposite toothed faces (12) each comprising at least one tooth, these two toothed faces (12) being interconnected by two smooth faces (13) whose spacing is substantially less than the width (1) of the groove oblong (8).   ) Sports shoe (1) according to claim 14, characterized in that the ring   (11) has a substantially square shape.   16) Sports shoe (1) according to claim 14, characterized in that the ring (11) comprises two diametrically opposite teeth connected by two smooth faces (13)   formed by cylinder portions.   17) Sports shoe (1) according to claim 14, characterized in that the smooth faces (13) have a radius of curvature greater than the half-width (1) of the groove oblong (8).   18) Sports shoe (1) according to any one of the preceding claims,   characterized in that the ring (11) is held transversely on the axis (10) by transverse retaining means.   19) Sports shoe (1) according to claim 18, characterized in that the transverse retaining means of the ring (11) on the axis (10) consist of a projecting ring (29) integral with the axis (10), and cooperating with a groove (30) produced in the ring (11), the ring (11) comprising a chamfer (31) serving as an engagement ramp   of the ring (29) in the groove (30).   ) Sports shoe (1) according to any one of the preceding claims,   characterized in that the anchoring systems (6 a, 6 b) of the collar (5) on the buttress (4)   are holding means (14, 19) of the collar (5) on the buttress (4).   21) Sports shoe (1) according to any one of the preceding claims,   characterized in that the ring (11) is provided with a crown (32) projecting radially with respect to the ring (11), interposed between the buttress (4) and the flank (33) of the collar (5).   22) Sports shoe (1) according to any one of the preceding claims,   characterized in that the oblong groove (8) is not through, and comprises a   shoulder (35) constituting stop in transverse direction for the ring (11).