FR2682570A1 - Ski boot including a device for adjusting the upper - Google Patents

Abstract

The invention relates to a ski boot in which the insertion of the foot and then the holding of the lower leg are ensured by an upper (2) consisting of at least a front cover piece (4) and a rear cover piece (3), the latter being articulated on a spindle (5) of a lower shell (1) and locking on the latter with the aid of a locking device (8) of the type with nesting (interlocking) consisting of a stud (10) and of a recess (11). It is characterised in that the projecting element or stud (10) includes means for adjusting its relative position with respect to the articulation spindle (5) of the rear cover piece (3) in order to distance it therefrom or bring it closer thereto in a radial direction (r), so as to vary its position between at least two radial distances (d, d') with respect to the articulation spindle (5) of the rear cover piece (3) by rotation of the said stud (10) and/or of an intermediate support element in order to act on the transverse inclination or "canting" of the upper (2) with respect to the lower shell (1).

Description

SKI BOOT HAVING A ROD ADJUSTMENT DEVICE
The present invention relates to a ski boot whose shell has several constituent parts, including a shell bottom surmounted by a rod which consists of at least a rear cover and a front cover, and possibly of flanks coming from the bottom shell up to the area of said rod and relates to a device for adjusting and locking said rod in the skiing position.

 In known ski boots of this type, the rear cover is articulated relative to the bottom of the shell around a pivot located approximately in the area extending from the malleoli to the heel and is locked in the closed position of the upper, on the sides thereof, by means of a locking interlocking device of the type having a projecting element or stud which cooperates with a corresponding recess in the transverse direction to the thickness of the walls of the rod. shoes, the rear cover has the recess while the projecting element is located on wings coming from the bottom of the hull and the uncoupling of said recess and element is effected by elastic deformation of the parts of the rod comprising them. It follows from such a shoe structure that the locking device is active only when the upper is closed and that it is the latter which determines the longitudinal angle of inclination of the upper relative to the bottom of the shell, it that is to say the angle that the lower leg of the skier must adopt relative to the seat of his foot; more commonly, this angle is called the forward angle, and corresponds substantially to the front-rear balance position adopted by the skier for skiing. Furthermore, the locking device allows precise and instantaneous transmission of movements and stresses on the skier's leg during skiing, and therefore a higher quality in the rear support recoveries which are carried out especially on rigid parts of the locking device, in this case the stud and the recess.

 In order to be able to freely choose the advancing angle, in particular in order to make the boot adaptable to the requirements of the skier, it is also known to have means for adjusting said advancing angle which act in combination with the locking device.

 The German utility model No. G 91 06355.8 describes a shoe of the aforementioned type, comprising a locking device provided with means for adjusting the angle of longitudinal advancement of the upper relative to the bottom of the shell. These means are constituted by a tenon and a lumen made respectively on the sides of a rod portion and on a rear cover articulated on the bottom of the shell, said sides having a plurality of tapped holes arranged in an arc relative to the articulation pivot of the rear cover on the bottom of the shell, which holes are used for fixing the post by means of a screw.

 It is also known, from German patent DE 20 06 001, means for adjusting a locking device for a rear cover on a part of the rod which are constituted by a transverse lever fixed by one of its ends to a cover rear and the other free end of which comprises an anchoring stud capable of cooperating with any one of the corresponding recesses formed on an insert on a side of the rod portion, each of said recesses determining, in combination with the pivot d hinge of the rear cover, a different angle from the rear cover relative to the bottom of the hull and therefore offering a determined forward angle.

 Also, French patent application No. 2 640 123 describes a locking device provided with means for adjusting the locking position of a rear cover relative to a sleeve of the rod and, consequently, of the extreme angular position of restraint of the lower leg of the skier in the anteroposterior direction The adjustment means are here constituted by a succession of grooves coaxial with the axis of articulation, formed hollow in the wings of the rear cover and cooperating with ribs fixed on a raised element or fixed tenon on the sides of the rod.

 According to another embodiment shown on this same document, the adjustment means consist of an eccentric ring reversible in a longitudinal direction, placed in the wall of the sleeve, said ring ensuring the position of the element in relief through a threaded rod on said wall of the sleeve, which element is intended to be housed in a wing of the rear cover.

 These various adjustment means cited therefore only allow an advance adjustment, that is to say an overall longitudinal inclination of the rod more or less significant relative to the bottom of the shell.

 Now, skiers are demanding an increasingly precise adaptation of the boot to their feet and to their equilibrium position for skiing, but also an adaptation to their morphology. Consequently, a shoe allowing only the adjustment of the advancing angle proves unsuitable for current requirements.

 To meet this expectation of skiers and fill a technological vacuum in this area, it therefore appears necessary to also provide an adjustment of transverse inclination of the rod relative to the bottom of the hull, adjustment commonly called "canting", and corresponding to the adaptation of said rod to the axis of the lower leg of the skier relative to the seat of his foot (pronation, supination).

 For this purpose, the present invention relates to a shoe of the aforementioned type in which the projecting element and the corresponding recess are always located between the rear cover and one of the other constituent parts of the upper such as the sides coming from the bottom. shell to the area of the upper, or such as the wings of the front cover. The shoe is characterized in that the projecting element or stud comprises means for adjusting its relative position relative to the axis of articulation of the rear cover to move away from or approach it in a radial direction, so as to make its position variable, between at least two radial distances relative to the axis of articulation of the rear cover, by rotation on the fixing part of said stud and or an intermediate support element on itself, for action on the transverse inclination or "canting" of the rear cover and, consequently, on the transverse inclination globa the of the rod relative to the bottom of the hull, and this, whatever the position of advance.

 According to a first embodiment of the invention, the fixing part of the stud is eccentric with respect to the external contour of the latter, which is provided with a possibility of rotation on itself.

 According to a second embodiment of the invention, the fixing part of the stud is eccentric with respect to a support element inserted in the rod with which it cooperates, and which is provided with a possibility of rotation on itself.

 According to a third embodiment of the invention, the fixing part of the stud is eccentric with respect to the external contour of the latter and with respect to a support element with which it cooperates, the stud and the support element being provided of a possibility of rotation on itself.

 Still according to the invention, the possibility of rotation of the pad and the support element can be progressive over 360 "or over a more limited angle, or even for example, limited to two positions opposite to 1800.

The invention will be better understood and other characteristics thereof will be highlighted with the aid of the description which follows, with reference to the appended schematic drawings illustrating, by way of nonlimiting examples, how the invention can be performed and in which:
FIG. 1 is a side view of a shoe comprising a device for locking the rear cover on the upper according to the invention, provided with means for adjusting the transverse tilt or anting "
- Figures 2 to 4 are detail views of the canting adjustment means "according to a particular embodiment;
- Figures 2a and 3a show sectional views respectively along lines ll-ll and 111-111 of Figures 2 and 3 ;;
- Figures 5 and 6 are views according to Figure 2 using a cylindrical insert;
- Figure 5a is a sectional view along the line VV of Figure 5;
- Figures 7 to 9 are alternative embodiments using a quadrangular insert;
- Figure 7a is a sectional view along the line Vll.VII of Figure 7;
- Figure 10 is a side view of a shoe comprising a device for locking the rear cover on the upper provided with means of "canting" adjustment of the upper, associated with means for adjusting the angle of longitudinal advance of said rod;
- Figures 1 1 and 12 show a shoe according to Figure 10, respectively in extreme positions of longitudinal advance and in extreme positions of Scanting ";;
- Figure 13 is a partial cross-sectional view of a shoe along the line XIll.XlIl of Figure 12;
- Figures 14 and 15 are views of a locking device showing different possibilities of adjustment "canting" and "advancement" of a shoe according to Figure 10;
- Figure 14a is a sectional view along the line XIV.XIV of Figure 14;
- Figure 16 is a view showing, on an enlarged scale, the main possibilities of adjustment "canting" and longitudinal advance, offered by the device of Figures 10 to 15 by rotation of the stud on itself;
- Figures 17 and 18 are views showing an improvement to the device according to Figures 14 and 15 concerning the adaptation of means for holding the stud in position;
- Figure 17a is a sectional view along the line XVII.XVII of Figure 17 ;;
- Figures 19 and 20 are side views of two different types of shoes to which the locking device can be fitted with "canting" adjustment means, shown in Figures 1 to 18.

 The ski boot shown in FIG. 1 is constituted, in a manner known per se, by a rigid shell bottom 1 surmounted by a rod 2 constituted in the present example by a rear cover 3 forming a collar, by a front cover 4 and flanks 7 ′ coming from the bottom of the shell 1 as far as the area of the rod. The rear cover 3 in the form of a collar has wings 7, and is at least partially articulated on the bottom of the shell 1 around an axis 5, allowing its angular mobility in a longitudinal direction when used on the one hand, and allowing the introduction of the foot into the shoe when putting on or taking it off on the other hand. The axis 5 is substantially horizontal and is carried by a rear part of the bottom of the shell 1 which it passes through, thus ensuring the connection with the lower lateral extensions 6 of said rear cover 3.

 The rear cover 3 thus articulated is capable of locking in the closed position on a part of the rod 2 which can be formed by the sides of the front cover 4 or, as in this example, on the sides 7 ′ of the bottom of the shell 1, by means of a locking device 8 ensuring the angular immobilization in the longitudinal direction of the rod 2, at a predetermined angle.

 The rod 2 is equipped, in addition to the locking device 8, with closing means 9 known per se to ensure the adjustment and the maintenance of said lower leg of the skier to the boot.

 This arrangement of the constituent parts of the rod 2 has the effect of blocking the lower leg of the skier in the anteroposterior direction and vice versa, that is to say in a direction in the same direction as that of the front equilibration. -back of the skier during skiing.

 The locking device 8 of the rear cover 3 operates by fitting a projecting element, or stud 10, into a corresponding recess II; according to the present embodiment of the shoe, the recess It is obtained on the wings 7 of the rear cover 3 and the stud is obtained on the sides 7 ′ of the bottom of the shell 1.

 It goes without saying that the locking device 8 can be arranged in another way as long as the rear cover 3 can still be locked in the ski practice position relative to the whole boot. Thus, for example, the projecting element 10 and the recess 11 will always be located between the rear cover 3 and one of the other constituent parts of the rod 2, such as the wings of the front cover 4, such as the sides 7 ′ coming from the bottom of the shell 1 as far as the region of the rod, or such as a sleeve attached to the bottom of the shell 1 as illustrated in FIG. 20.

 Preferably, but not necessarily, the stud 10 and the recess 11 are of circular outline, and are provided retractable relative to each other by elastic deformation of the rear cover 3 and / or the sides of the front cover 4, and / or sides 7 'of the bottom of the hull 1.

 According to the invention, the element projecting from the stud 10 comprises means for adjusting its relative position relative to the hinge axis 5 of the rear cover 3 in order to move away from it or approach it, in a direction radial (r) so as to make its position variable, between at least two radial distances (d), (d ') relative to the axis of articulation 5 of the rear cover 3 by rotation of said stud 10 for action on the 'transverse tilt or canting' of the rod 2 relative to the bottom of the shell 1.

 In general, said "canting" adjustment means consist of an external contour of the stud 10 which is symmetrical with respect to its center 0, and which is eccentric with respect to its fixing part 12, in this case a screw screwing onto the sides 7 'of the bottom of the shell 1 with which the rear cover 3 is connected by locking.

 Of course, as will be seen below, the contour of the stud 10 may not be eccentric relative to its fixing part 12, and in this case, the latter will be eccentric relative to the contour of an intermediate support element of stud 10.

 As shown in Figures 1 to 6, the stud 10 is part of a cylindrical volume of small height, but at least equal to the thickness of the wall of the collar in which is formed the recess 11 of corresponding shape in which fits said stud 10.

 As already mentioned, the fixing piece 12 is constituted by a screw passing through a cylindrical passage hole 13 of the stud 10, a screw coming into direct engagement with the wall of the sides 7 'of the bottom of the shell 1, against which it acts in clamping, after positioning the stud 10 chosen by the skier according to his requirements, in a field of 360 "around said axis 12.

 Figures 2, 3, 2a, 3a, show the stud 10 according to two extreme positions of distance or approximation relative to the axis of articulation 5 of the rear cover 3 and corresponding to the aforementioned radial distances (d), (d ').

 FIG. 4 illustrates different possible positions of the pad 10 constituting intermediate positions (A) (B) (C) located between the upper and lower extreme positions.

 The embodiment shown in FIGS. 5, 5a differs essentially from the previous one in that the fixing piece, or screw 12 of the stud 10, eccentric with respect to the outline of the latter, is no longer fixed directly on the sides 7 'from the bottom of the shell 1, but by means of a support or insert 14 forming part of a cylindrical volume and housed in a single mounting opening 15 formed in the thickness of the wall of the sides 7' of the bottom of shell 1. The screw 12 thus acts in tightening on the pad 10 against the insert 14, after positioning said pad in a field of 360, as before.

 In the present case, the screw 12 is screwed into the center of the insert 14, but, as shown in FIG. 6, the latter can also cooperate with an equally eccentric zone of the insert 14A, thus making it possible to make it itself angularly positionable by rotation in a field of 360, adding to that of the pad 10, for a greater range of adjustment "canting".

 According to an alternative embodiment shown in FIGS. 7 and 8, the stud 10 is fixed to the sides 7 ′ of the bottom of the shell 1 by means of an insert 14B of quadrangular shape, reversible at 1800, the outer contour of which is symmetrical at its center 0 'and eccentric with respect to the fixing axis or screw 12 of the stud 10. The insert 14B, as in the previous case, is capable of being housed in a single corresponding mounting opening 16 made in the 'thickness of the sides 7' of the bottom of the shell 1, and against which the insert 14B acts in clamping, by means of the screw 12 which forms the axis of the stud 10, which screw 12 coming to cooperate with at least one tapped hole 17 of insert 14B.

 According to FIGS. 7 and 8, the circular contour of the stud 10 is not eccentric with respect to its fixing piece 12, only the tapped hole 17 of the quadrangular insert 14B being so, relative to the longitudinal axis of this one, passing through its center 0 '.

 On the other hand, FIG. 9 shows a stud 10 whose contour is eccentric with respect to its fixing part 12, the latter being itself eccentric with respect to the longitudinal axis of the insert 14B, so as to increase the 'canting' adjustment range.

 FIGS. 10 to 18 show a stud 10A different from the previous one in that it is traversed by a fixing piece or screw 12, not by means of a cylindrical hole as previously, but by an oblong hole 18.

 The longitudinal axis XX 'of the latter is eccentric relative to the center 0 "of the pad 10A, in a direction substantially perpendicular to the radial direction of the canting adjustment", so as to allow, in combination with this latter adjustment, an adjustment of the advancing angle, corresponding to a chosen longitudinal inclination of the rod 2.

 Thus, as shown in Figures 10 to 13, the rod 2 is adjustable in a transverse direction in the directions F1 or F2 to cause an inclination along R (Figure 13), inward or outward of the shoe, to obtain the "canting" setting.

 More particularly, FIGS. 12 and 13 show an example of such an adjustment in which the positions I and II of the stud 10A correspond to an internal or external "canting" setting, and are obtained by simple rotation of said stud 10A at 1800 after loosening of the fixing piece or screw 12 taking the place of the axis of rotation. Of course, and as schematically shown in Figure 16, all intermediate positions are allowed.

 FIG. 11 shows more particularly, from the same locking device, an advance adjustment being effected by displacement from front to rear of the stud 10A, by translation of the oblong light 18 on the screw 12, previously loosened, of so as to obtain a minimum III or maximum IV inclination of the rod 2.

 In order to facilitate the tilting "canting" in the direction F1 or F2, the oscillation of the rod along R is facilitated by allowing an angular movement of the axis 5 on which the rear cover 3 is articulated by its lateral extensions 6.

 To do this, the axis 5 is retained in its central zone in a housing 19 with double conical entry at the center of which it is rocking. The housing 19 is produced in the posterior region of the bottom of the shell 1 (FIG. 13).

The variant embodiment shown in FIGS. 14, 14a and 15 differs essentially from the previous one in that the fixing piece, or screw 12, of the stud 1 OA is capable of being screwed into any one of several tapped holes 20 aligned in a direction substantially identical to that
XX 'of the oblong light 18 of the pad 10A.

 These Figures 14 and 15 show a direct screwing of the screw 12 in the thickness of the sides 7 'of the bottom of the shell 1, while, according to another embodiment shown in Figures 17 and 17a, this same screwing is carried out in tapped holes 20A produced in a quadrangular insert 21, added in the thickness of the sides 7 'of the bottom of the shell 1, along a symmetrical longitudinal axis XX' coinciding with that of the light 18 of the stud 1 or.

 Such a plurality of holes 20A, in axial combination with the lumen 18, allows a range of advance adjustment of the rod 2 much more precise than previously since it can be carried out "continuously".

 The embodiment shown in FIG. 18 essentially differs from the previous one in that the threaded holes 20A are produced in an insert 21A reversible at 1800, the axis XX 'of the holes 20A coinciding with that of the oblong hole 18, is eccentric with respect to the own longitudinal axis of the insert 21A.

 Furthermore, and according to an additional characteristic appearing in FIGS. 17, 17a and 18, the face of the stud 10A, contiguous to the sides 7 'of the bottom of the shell 1, comprises successive notches 22, substantially parallel to the radial direction (r ) of the "canting" setting, which cooperate with complementary notches 23 produced on the sides 7 'of the bottom of the shell 1 or produced according to the present example, on the insert 21 A situated opposite. These notches 22 and 23 are intended to reinforce the maintenance of the stud 10A in its position on the sides 7 'of the bottom of the shell 1, and thus guarantee the consistency of the adjustment and locking according to a chosen advancing angle, in combination with a Ucanting setting ".

 The invention applies in all of the above variants not only to the shoe of the type described above but also to any other type of shoe such as that shown in FIG. 19, the constituent part of the upper 2A of the shoe receiving the locking pin 10.1 OA consists of a sleeve 25 connected to the bottom of the shell 1 by a joint 26 in the region of the malleoli and interposed between the front covers 4A and rear 3A, which sleeve 25 has posterior lower extensions 27 s' extending in the heel area and on which said rear cover 3A is articulated on the pivot 5A.

 The invention can also be applied to another type of shoe shown in FIG. 20, the constituent part of the upper 2B of the shoe receiving the locking stud 10, 10A consists of the front cover 4B which is articulated at 28 on the bottom of shell 1 in the area of the toe and is in the form of a wrapping gutter of the front part of the shoe, the rear cover 3B being articulated at 5B in the area of the malleoli.

 Again, the locking device 8 can advantageously be masked so as to be integrated both visually and materially into the overall volume of the rod; for this purpose, the recess is provided with a blind so that the wall of material closing it masks the stud 10 relative to the outside of the shoe, in the closed position of the upper 2.

 Finally, without departing from the scope of the invention, the recess It may be produced in the form of a light in an arc of a circle, centered on the axis of articulation 5A of the rear cover 3 and extending in the longitudinal direction of the shoe. In this embodiment of the locking device 8, shown in broken lines in Figure 19, the light constituting the recess It has a width adjusted to the diameter of the stud 10 and its front end 11 ', at least, has an inner contour corresponding to that outside of the part of the stud 10 which abuts against this end 11 '; ; concerning the extent of the light 11, this is determined as a function of the amplitude of the angular movement which it is desired to provide to the rear cover 3 in the postero-anterior direction, from its initial locking position on the upper 2. This possibility of angular movement of the rear cover 3 is particularly desired when it is desired to give the upper 2 a certain appreciable postero-anterior flexibility during skiing by the skier and making the overall behavior of the boot more tolerant. vis-à-vis the latter while preserving the advantages of an initial adjustment of advance and canting.

Claims (18)

 1- Ski boot whose shell has several constituent parts, including a shell bottom (1) surmounted by a rod (2, 2A, 2B) which consists of at least one rear cover (3, 3A, 3B) and a front cover (4, 4A, 4B), the rear cover (3, 3A, 3B) being articulated relative to the bottom of the shell (1) around a pivot (5, 5A, 5B) situated approximately in the area extending from the malleoli to the heel and locking in the closed position of the upper (2, 2 A, 2 B), on the sides thereof, using a locking device (8) with interlocking , of the type having a projecting element or stud (10, 10A) which cooperates with a corresponding recess (11) in the transverse direction to the thickness of the walls of the rod (2, 2A, 2B), said rear cover (3 , 3A, 3B) comprising the projecting element (10, 10A) or the corresponding recess (11), said projecting element and recess being provided retractable relative to one another by elastic deformation parts of the rod (2, 2A, 2B) comprising them, characterized in that the projecting element or stud (10, 10A), comprises means for adjusting its relative position relative to the axis of articulation (5, 5A, 5B) of the rear cover (3, 3A, 3B) to move away from it or approach it in a radial direction (r), between at least two radial distances (d, d ') from the hinge pin (5, 5A, 5B) of the rear cover (3, 3A, 3B) by rotation of said stud (10, 10A) and of an intermediate support element (14, 14A, 14B, 21, 21A) , for action on the transverse tilt or "canting" of the rod (2, 2A, 2B) relative to the bottom of the shell (1).  2- Shoe according to claim 1, characterized in that the "canting" adjustment means consist of an external contour of the stud (10) which is symmetrical with respect to its center (0), and which is eccentric with respect to a fixing part (12) of said stud (10), on a rod part (2, 2A, 2B) with which the rear cover (3, 3A, 3B) is connected by locking.  3- shoe according to claim 2, characterized in that the fastening part (12) is constituted by a screw passing through an eccentric passage hole (13) of the stud (10) and in direct engagement with the part of the rod (2, 2A, 2B) against which it acts in clamping, after positioning the stud (10) in a field of 360 "around said axis (12).  4- Shoe according to one of claims 1 or 2, characterized in that the fastening part (12) is constituted by a screw passing through an eccentric passage hole (13) of the stud (10) and engaged with a support element intermediate or insert (14), housed in a single mounting opening (15) formed in the thickness of the rod part (2, 2A, 2B), and against which insert (14) acts by tightening the screw (12) , after positioning the stud (10) in a 360 "field around said screw (12).  5- shoe according to claim 4, characterized in that the fixing screw (12) of the eccentric stud (10) cooperates with a central area of the insert (14).  6- shoe according to claim 4, characterized in that the fixing screw (12) of the eccentric stud (10) cooperates with a zone also eccentric of the insert (14A), itself angularly positionable by rotation in a field of 360.  7- Shoe according to one of the preceding claims, characterized in that the volume of the stud (10) fits into a cylinder.  8- Shoe according to one of claims 4 to 7, characterized in that the volume of the insert (14, 14A) is inscribed in a cylinder.  9- Shoe according to claim 1, characterized in that the "canting" adjustment means are constituted by an intermediate support element or insert (14B) of quadrangular shape reversible to 1800 whose outer contour is symmetrical at its center (0 ') and eccentric with respect to the fixing part or screw (12) of the stud (10), which insert (14B) is capable of being housed in a corresponding single mounting opening (16) formed in the thickness of the rod part (2, 2A, 2B), and against which insert (1 4B) acts by tightening the screw (12) of the stud (10) able to cooperate with at least one tapped hole (17) of the insert (14B).  10- Shoe according to claim 9, characterized in that the stud (10) is cylindrical and in that it is symmetrical relative to its fixing axis (12), the latter being eccentric relative to the longitudinal axis of the reversible quadrangular insert (14B).  11- Shoe according to claim 9, characterized in that the stud (10) is cylindrical and in that it is eccentric relative to its fastening part (12), itself eccentric relative to the longitudinal axis of the reversible quadrangular insert (14B).  12- Shoe according to one of the preceding claims, characterized in that the fixing piece or screw (12) of the stud (10 A) passes through the latter by an oblong light (18), eccentric relative to the center (0 ") the stud (10A) formed in a direction substantially perpendicular to the radial direction (r) of "canting" adjustment, so as to allow, in combination with the latter, an adjustment of the advance angle corresponding to a chosen longitudinal inclination of the rod (2, 2A, 2B).  13- Shoe according to claim 12, characterized in that the fixing piece (12) of the stud (10A) is a screw capable of being screwed into any one of several tapped holes (20) arranged in a direction substantially identical to that (X, X ') of the oblong light (18) of the pad (10A).  14. Shoe according to claim 13, characterized in that the threaded holes (20A) are produced in a quadrangular insert (21) added in the thickness of the rod (2), along a longitudinal axis (X, X ') symmetrical to its longitudinal sides.  15- Shoe according to claim (13), characterized in that the threaded holes (20A) are produced in a reversible insert at 1800 (21 A) added in the thickness of a part of the rod along a longitudinal axis (X, X ') eccentric.  16. Shoe according to one of claims 12 to 15, characterized in that the face of the stud (10 A) directed towards the upper (2, 2A, 2B) comprises successive notches (22) substantially parallel to the radial direction ( r) of the "canting" setting, and cooperating with complementary notches (23) of a rod part (2, 2A, 2B) or of the insert (21A) located opposite, for immobilization of said rod (2, 2A, 2B), according to a chosen advancing angle.  17- Shoe according to one of claims 1 to 16, characterized in that the constituent part of the upper (2A) of the shoe receiving the locking stud (10, 10A) is constituted by a sleeve (25) connected to the bottom shell (1) by a joint (26) in the region of the malleoli, and interposed between the front (4A) and rear (3A) cowls, which sleeve (25) has lower and rear extensions (27) extending in the heel area and on which said rear cover (3A) is articulated on the pivot (5A).  18- Shoe according to one of claims 2 to 16, characterized in that the constituent part of the upper (2B) of the shoe, receiving the locking stud (10, 10A), is constituted by the front cover (4B) , which is articulated (28) on the bottom of the shell (1) in the area (la) of the shoe toe and is in the form of a wrapping gutter of the front part of the shoe, the rear cover ( 3B) being articulated (5B) in the region of the malleoli.