EP1836916A1 - Skiboot adaptable to trekking - Google Patents

Abstract

The assembly has a removable sole element (11) fixed on an incomplete sole (1) of a ski shoe type rigid rod. The element has a hook (15) cooperating with a front part (2) of the sole, and is suitable to complete the incomplete sole so as to form a sole that is compatible with an ISO 5355standard of a ski shoe and an ISO 9253standard of a trail running shoe. A locking and fixation mechanism (3) locks the element under the incomplete sole, where the shoe is made of a plastic material.

Description

The present invention relates to a footwear type ski boot, meeting the ISO 5355 standard of ski boots, adaptable to the practice of hiking by a transformation of its sole, to substantially achieve the ISO 9523 standard of hiking shoes.

The problem of adapting a ski boot to walking has been a long time since the skier inevitably needs to walk with his ski boots, whether to reach the bottom of the lifts from the car park or hotel or to reach a place in altitude not served by lifts.

A first solution, described in the document US4811504 , provides a removable walking sole that fits over a standard ski boot. The advantage of this solution is to offer a standardized ski boot and therefore by definition perfectly adapted to the practice of skiing. Its disadvantage is that the solution is not effective for the practice of walking.

An opposite solution is described in the document US4542599 in which a shoe better adapted to walking is provided, a removable sole added to the practice of skiing. The disadvantage of this solution is that it does not provide an optimal solution for walking. In addition, the practice of skiing is not secure because the removable sole which occupies the entire lower surface of the shoe plus the side edges is difficult to fix satisfactorily and may become detached during the efforts suffered by skiing.

Another document FR2743700 of the prior art discloses a sports shoe for gliding gear that can be adapted to walking by providing removable front and rear means under the sole of the shoe. Support plates are provided laterally under the boot, able to cooperate with particular complementary plates of a ski binding. Slides are provided under the shoe for fixing the removable parts. No means of locking the removable parts is described and screws are necessary for their maintenance under the shoe. A disadvantage of this solution stems from its incompatibility with existing standards. Indeed, it requires non-standardized ski bindings with specific support plates. This system proves more dangerous because it is not very effective for triggering allowing the release of the shoe in the event of a fall in torsion. In addition, during the practice of skiing, the removable parts cooperate on the front and rear of the shoe with the jaws of the ski binding and undergo very high forces which cause wear of the slides which causes the appearance a game between the removable part and the shoe that becomes harmful to the proper guidance of the gliding device. Similarly, this solution does not achieve a walking shoe approximating the standards in force. Finally, it also requires a tool for shoe processing operations, which is not user friendly.

To overcome the above disadvantages, a different solution is proposed in the document FR2774266 which allows an adaptation of a classic ski boot to ski touring for example, on the basis of a modification of the lower part of the sole only. Fasteners such as screws are provided to hold the removable plates under the soleplate. The disadvantage of this solution comes from its non-usability since the adaptation of the shoe requires a tool. In addition, as a small thin portion is modified under the shoe, this solution does not allow a deep adaptation of the shoe. Indeed, sidewalks always keep the same dimensions for example. Thus, this approach does not allow an adaptation of the shoe approaching or reaching the standard of hiking shoes.

Finally, there are more distant solutions described in the documents IT1220793 and IT1257619 which provide for front and rear portions of removable ski boot soles to enable their adaptation to different sizes. These solutions also require screws for locking them, which is not user friendly. These screws are directly screwed into the rigid plastic material positioned in the sole of the shoe and this device is not suitable for many transformations because the plastic wears out very quickly becoming non-operational. In addition, they do not disclose the adaptation of the shoe to walking.

Today, ski professionals, first responders or trackers for example, and amateurs of skiing in the high mountains need access to slopes not directly served by conventional lifts. They therefore need to walk in the high mountains to access them, a need that requires a high-performance walking shoe, ideally a standardized hiking boot, whose shape is naturally optimized for walking and allows more specific adaptations using accessories, such as crampons for example, which are only compatible with these standard hiking boots. Then, these skiers put on their skis and descend on often dangerous slopes. they have so also need a fixation of their shoe on the ski very powerful and secure. It turns out that the existing bindings of hiking boots on a ski are not satisfactory. These skiers in fact ideally need a standardized ski boot associated with a standard alpine ski binding. As has been seen previously, no solution of the prior art satisfies this need satisfactorily.

A general object of the invention therefore consists in providing a high-performance footwear assembly both for high-altitude hiking and downhill skiing, which is user friendly and compact, for example avoiding two pairs of shoes to be carried and two pairs of ski adapted to each shoe.

More precisely, a first object of the invention therefore consists of a footwear assembly that is sufficiently rigid for a good transmission of the skier's forces to a gliding board, and comprising sidewalks and standard bearing plates, to cooperate with the usual fasteners. provided on skis, and resistant to the forces under extreme conditions of use for skiing.

A second object of the invention consists of a set of footwear that allows trekking-type walking in the high mountains, including a good unwinding of the foot and the possible possibility of adding standardized accessories such as crampons.

A third object of the invention consists of a compact footwear assembly, for which the ski-walking transformation is easy and user-friendly, can be practiced a large number of times without causing significant wear, regardless of the location and external conditions .

The invention is based on a footwear assembly comprising a rigid ski-boot-type upper, under which there is an incomplete soleplate able to receive at least one front and / or rear part of the removable soleplate, which can be mechanically positioned and locked. , secured and without a specific tool, under this incomplete sole of the rod to complete it, the geometry of the incomplete sole of the rigid rod and removable sole portions being such that it is possible to comply with both the ISO 5355 standard of ski boots and substantially meet the requirements of the ISO 9523 standard of hiking shoes. The fixation of the removable soleplate with the rest of the boot is such that it is as reliable and secure as if it were made with the aid of several screws, without the disadvantage of screwing which causes rapid wear and tear. is not suitable for a large number of uses during successive disassembly and reassembly.

The invention is more precisely defined by the claims.

• La figure 1 représente une vue partielle en perspective de dessous d'un premier élément de semelle amovible dans une étape de fixation avec la semelle incomplète de la tige de chaussure selon un premier mode d'exécution de l'invention ;
• La figure 2 représente une vue partielle en perspective de dessous d'un premier élément de semelle amovible après sa fixation avec la semelle incomplète de la tige de chaussure selon un premier mode d'exécution de l'invention;
• La figure 3 représente une vue partielle en perspective de dessus d'un premier élément de semelle amovible après sa fixation avec la semelle incomplète de la tige de chaussure selon un premier mode d'exécution de l'invention;
• La figure 4 représente une vue partielle de côté d'un premier élément de semelle amovible après sa fixation avec la semelle incomplète de la tige de chaussure selon un premier mode d'exécution de l'invention;
• La figure 5 représente une vue partielle en perspective de dessous du mécanisme de fixation partiellement démonté de la semelle incomplète de la tige de chaussure selon un premier mode d'exécution de l'invention;
• La figure 6 représente une vue partielle en perspective de dessus de la semelle de la chaussure selon une première variante d'un second mode d'exécution de l'invention;
• La figure 7 représente une vue partielle de côté de la chaussure selon un second mode d'exécution de l'invention;
• Les figures 8 à 10 représentent des vues en perspective de détails du dispositif de verrouillage de semelle dans différentes configurations selon un second mode d'exécution de l'invention ;
• La figure 11 représente une vue partielle en perspective de dessous de la chaussure selon une seconde variante d'un second mode d'exécution de l'invention;
• Les figures 12 à 17 représentent des vues en perspective coupée par un plan vertical longitudinal de détails du dispositif de verrouillage de semelle dans différentes configurations selon la seconde variante du second mode d'exécution de l'invention ;
• La figure 18 représente une vue partielle en perspective de dessus de la chaussure selon une troisième variante d'un second mode d'exécution de l'invention;
• Les figures 19 et 20 représentent des vues en perspective de détails du dispositif de verrouillage de semelle dans différentes configurations selon la troisième variante du second mode d'exécution de l'invention.

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

• Figure 1 shows a partial perspective view from below of a first removable sole member in a fixing step with the incomplete sole of the shoe upper according to a first embodiment of the invention;
• FIG. 2 represents a partial perspective view from below of a first removable sole element after its attachment with the sole. incomplete shoe rod according to a first embodiment of the invention;
• 3 shows a partial perspective view from above of a first removable sole member after its attachment with the incomplete sole of the shoe upper according to a first embodiment of the invention;
• Figure 4 shows a partial side view of a first removable sole member after attachment with the incomplete sole of the shoe upper according to a first embodiment of the invention;
• Figure 5 shows a partial perspective view from below of the partially disassembled attachment mechanism of the incomplete sole of the shoe upper according to a first embodiment of the invention;
• Figure 6 shows a partial perspective view from above of the sole of the shoe according to a first variant of a second embodiment of the invention;
• Figure 7 shows a partial side view of the shoe according to a second embodiment of the invention;
• Figures 8 to 10 show perspective views of details of the sole locking device in different configurations according to a second embodiment of the invention;
• 11 shows a partial perspective view from below of the shoe according to a second variant of a second embodiment of the invention;
• Figures 12 to 17 show perspective views intersected by a longitudinal vertical plane of details of the sole locking device in different configurations according to the second variant of the second embodiment of the invention;
• Figure 18 shows a partial perspective view from above of the shoe according to a third variant of a second embodiment of the invention;
• Figures 19 and 20 show perspective views of details of the sole locking device in different configurations according to the third variant of the second embodiment of the invention.

The important concept of the proposed solution is to be able to obtain, from a standardized ski boot, a simple transformation without tools and without significantly altering certain parts of the shoe or the sole, a significant change in the sole of the shoe to make it compatible with the ISO standard of hiking shoes.

As a reminder, the standardized sole of the hiking boots is made of a flexible rubber-like material forming crampons under its lower surface for good adhesion with the ground, has a rounded anterior shape to allow a good unwinding of the foot when walking, and a front sidewalk height remote from that of a standardized ski boot sole, which is in a rigid material for good bonding with a ski binding and further has a flat, smooth lower surface with sliding said support plates necessary for the implementation of the trigger function consisting of the safety release of the boot from the grip of a ski binding in case of a fall.

A first important element of the solution is that it allows a significant transformation of the geometry of the sole of the shoe, to achieve the important transformation of the ISO standard ski boots to that of hiking shoes, the differences are important. For this, the solution is based on three main elements: an initial stem having only one incomplete sole and two sets of removable geometry soles different being able to attach and associate with said incomplete sole to form an operational shoe having a sole configuration of either ski boot or hiking shoe. According to the solution, the two sets of removable soles thus form a significant part of the final sole obtained, and form in particular an important part, if not all, of the sidewalks before and possibly rear of the shoe finally obtained.

In addition, a second important element of the concept of the invention stems from the fact that this transformation must be able to be done a large number of times, which rules out for example any solution that would include a screwing in the plastic material of the shoe itself since such screwing induces rapid wear. Finally, this attachment of removable soles must be easy, fast and secure, so that it can be performed automatically in any circumstances, in any place and regardless of weather conditions for example, while obtaining a result that ensures that Removable soles reported will not separate from the shoe in a phase of intense effort during a walk or a ski descent.

The following embodiments illustrate by way of examples possible combinations of a removable sole according to the invention with an incomplete sole of a shoe upper, and various means of locking without screwing into the plastic material itself of the shoe. and adapted for many uses.

FIGS. 1 to 5 show a first embodiment of the invention in which a partially represented rigid stem of the ski boot type comprises an incomplete soleplate 1 on which a removable sole element 11 may be fixed so as to extend over a front part of the shoe, enough to understand the standardized elements under the sole of the shoe, as the support plates for the ski boot soles.

The attachment principle of the removable element 11 rests on the one hand on a cooperation with the front portion 2 of the incomplete sole 1 of the boot upper and on the other hand on a cooperation with a fastening and locking mechanism 3 of the incomplete sole 1 at the rear of the removable element 11. In its front part, the removable element 11 comprises a sidewalk 12 comprising an inner vertical rim 13 and hooks 14 which come in cooperation with complementary shapes at the front surface 2 of the incomplete sole 1. This cooperation is maintained under pressure by the second attachment means 3 of the two elements 1, 11 disposed under the shoe. This second fixing means 3 comprises truncated portions 4 made in a metal rod 5 rotatably mounted in a space 6 of the incomplete sole 1 of the upper of the boot. The axis 5 is held in its housing by a cover 7 and can be rotated manually, or possibly by means of a rigid and thin element such as a coin, by means of its lateral ends 8. It can occupy two positions: a first position in which the flat portion of the truncated portions 4 is vertical and allows to position or remove hooks 15 of the removable soleplate 11 in a location 9 provided in the sole 1, and a second position obtained by a rotation of a half-turn of the axis 5 by actuating the end 8, in which the rounded surface at the truncated portions 4 of the axis 5 abuts against complementary rounded shapes of the hooks 15 of the Removable sole 11 to trap them in their housing 9 and thus lock the removable soleplate 11. Its release is obtained by a new rotation of a half-turn in the opposite direction of the axis 5, a rod 10 exerting a thrust under the effect of a compressed spring on the end portion 16 of the removable sole 11 to promote its disengagement. As is particularly illustrated in Figures 3 and 4, the removable element 11 represents a very large proportion of the compound final footing, including the entire shape of the front sidewalk 12 of the shoe thus mounted. This solution thus makes it possible to impose on the shoe finally mounted the shape of its sole and therefore the standard to be respected.

As a note, the standardized shape of the rear parts of both insoles of ski boots and hiking is very close and the only change of the front part of the sole makes it possible to reach substantially both standards. Alternatively, another removable sole member may be provided in the rear portion and fixed according to a locking device similar to that described above.

FIGS. 6 to 20 illustrate three variants of a second embodiment of the invention in which the removable soleplate extends over substantially the whole of the incomplete sole of the upper of the boot, consisting of a front part connected to a rear portion, the two parts being lockable by a locking mechanism positioned at the central area under the incomplete sole of the boot upper. In each of these variants, the front and rear portions of the removable sole also cooperate with the ends of the incomplete sole of the rod, in particular to form standardized sidewalks, according to one of the standards of the choice of ski boot or trekking .

FIGS. 6 to 10 illustrate a first variant embodiment of such a solution, in which the removable soleplate 31 therefore consists of a front sole 32 connected by lateral rods 36 to a rear sole 33. Each sole portion 32, 33 comprises, towards its ends, hooks 34, cooperating with complementary parts 27 of the incomplete sole 21 of the shoe, and in its central portion a keeper 35, adapted to cooperate with a locking device 23 of the incomplete sole 21 of the boot upper, partially shown in the figures for the sake of clarity. The lateral rods 36 are flexible enough to allow a slight approximation of the two sole portions 32, 33 for the positioning of the removable soleplate 31 in its fixing position in which its hooks 34 cooperate with the complementary parts 27 of the incomplete soleplate 21. shoe. The latter comprises at the front part of a curb before 22, at the rear part of a rear sidewalk 26, forms 27 at the front and at the back complementary to the hooks 34 and in the central zone, a device for locking 23 of the removable sole 31. This locking device 23 rests on a circular plate 25 rotatably mounted and manually operable by a button 28 disposed under its lower surface and accessible between the two lateral rods 36 connecting the two parts 32, 33 of removable insole. Diametrically opposite longitudinal locking bolts or rods 24 are fixed to the periphery of the plate 25 and are guided so as to remain substantially extended in the longitudinal direction of the boot. The operation of the locking of the removable sole is more precisely represented in FIGS. 8 to 10. The two complementary sole portions 21 and 31 are gradually approached until they come into contact, the bolts 24 being in an open position, represented in Figure 9. When the removable base is properly positioned, a simple rotation of a quarter turn of the circular plate 25 allows to extend the bolts 24 and bring them into their locking configuration, shown in Figure 10, in which they take position in the strikes 35 of the removable sole 31 thus preventing any release of the sole.

In an alternative embodiment, the ends of the front and rear portions 32, 33 of the removable sole 31 may have a different shape, for example include all the front and / or rear sidewalks similarly to the first embodiment described above. . In this variant, the connecting rods 36 between the two parts 32, 33 of the removable soleplate 31 are elastic so as to be elongate during the positioning of the removable soleplate 31 resting on the front and rear surfaces of the incomplete soleplate 21 of the shoe upper.

Figures 11 to 17 illustrate a second variant of this second embodiment which differs mainly by its locking device 23 '. The removable sole is also composed of two front and rear portions 32 ', 33', each having an extension 36'a, 36'b and a locking device 23 'directly arranged on these extensions. This locking device 23 'comprises a latch 25' rotatably mounted about an axis 26 'on an extension 36'a, a part 24' of which can cooperate with a step or tooth 35 'of the other longitudinal central extension 36 'b, thus allowing to lock the spacing of the two elements 32', 33 'of the removable sole engaged with the ends of the incomplete sole 21' and to prevent their longitudinal movement and their release.

This variant of embodiment advantageously has an additional level of security in that it comprises a safety lever 29 ', which comes to rest on the manual actuating surface 28' of the lock 25 'in its locked position, to maintain this position of secure way. FIG. 12 thus represents the sole in configuration locking. Figures 13 to 17 illustrate the different steps of unlocking the removable sole. The user starts by operating the safety lever 29 ', before being able to actuate the lock 25' by pressing on its control surface 28 ', to cause its rotation about a horizontal and transverse axis 26' and the release of the tooth 35 'of the extension 36'b, which can then be withdrawn longitudinally towards the rear.

Figures 18 to 20 illustrate a third variant of the second embodiment of the invention, wherein the removable sole is always composed of two front and rear portions 32 ", 33" respectively comprising extensions 36 "a and 36" b on which is directly arranged a locking means 23 ", comprising on the one hand a rod 25" mounted on a first extension 36 "has a mobile manner in transverse translation, actuable by a button 28", and comprising a ring 24 "can cooperate with one of the circular teeth 35 "included within the second extension 36" b Figure 19 illustrates the device in a locked position To unlock the removable sole, a user manually presses the button 28 "to laterally move the rod 25 "until the ring 24" out of the corresponding tooth 35 "In this configuration, the extensions 36" a and 36 "b can move longitudinally relative to each other and the week she reported 31 "can be so removed. The return spring 26 "ensures the return of the rod 25" in the locking configuration and prevents unintentional unlocking.

The last two variants are distinguished from the previous embodiments in that the locking means 23 ', 23 "is directly mounted on the elements of the removable soleplate, and no longer on the incomplete soleplate of the rod. an advantage additional to offer the possibility of adjusting the length of the removable soleplate, through the adjustment of the spacing provided between the two front and rear removable soleplate that can be locked at different spacings, which makes it compatible with shoes different size. For this, several teeth 35 ', 35 "are provided in each of these variants.

These different solutions have been presented as examples but the concept of the invention can be implemented with other configurations, in particular obtained by combining the various embodiments described above. For example, a means for securing the manual actuating means in the locked position of the soleplate, such as the lever 29 'of the variant embodiment illustrated in FIGS. 11 to 17, can also be implemented on all the other embodiments.

• même si un seul ensemble de semelle amovible 11, 31, 31' ou 31" a été représenté sur les figures pour des raisons de simplification, il est prévu deux ensembles de semelle amovible de géométrie différente mais aptes à une association avec la semelle incomplète 1, 21, 21', 21" de la tige rigide ;
• ainsi, une chaussure de ski formée par l'utilisation d'un premier ensemble de semelle amovible peut être transformée à l'aide d'un second ensemble de semelle amovible de manière à obtenir une semelle sensiblement compatible avec la norme des chaussures de randonnée, ce qui permet une marche aisée et la fixation éventuelle sous la chaussure d'accessoires normalisés prévus pour les chaussures de randonnée, comme des crampons. Un même ensemble chaussant permet ainsi la pratique du ski en toute sécurité ainsi qu'une marche optimale ;
• cette transformation de la semelle de ski en semelle de randonnée et inversement est simple et adaptée à un montage en tout lieu, même sans outil ;
• un point commun des différentes solutions décrites est de permettre une transformation qui repose sur un moyen de fixation incluant un moyen de verrouillage adapté à de nombreuses utilisations, c'est à dire permettant un grand nombre d'opérations de transformation comme par exemple plusieurs transformations par jour d'utilisation de la chaussure, sans entraîner une usure importante des éléments de la chaussure. Cet effet technique nous permet de nommer cet élément essentiel de l'invention, en tenant compte de sa fonction technique, « moyen de verrouillage pour de nombreuses utilisations ». Impérativement, ce moyen de verrouillage pour de nombreuses utilisations ne comprend aucune opération de vissage au travers du matériau plastique de la chaussure. Un résultat obtenu par cet effet technique est de permettre d'avoir un ensemble chaussant peu encombrant dont l'utilisation est prévue pour une transformation à chaque changement montée - descente. Dans le cas d'une solution avec vissage, l'utilisateur choisit une option ski ou marche pour sa chaussure, qu'il conserve sur une longue période d'utilisation ;
• la chaussure obtenue est sécurisée, la semelle est bien verrouillée et ne peut se libérer accidentellement. La fixation réalisée est aussi fiable et sécurisée qu'une fixation qui serait faite par un vissage des semelles amovibles.

Finally, the solution thus achieves the desired objects and has the following advantages:

• even if a single set of removable sole 11, 31, 31 'or 31 "has been shown in the figures for the sake of simplification, there are two sets of removable sole of different geometry but suitable for association with the incomplete sole 1 21, 21 ', 21 "of the rigid rod;
• thus, a ski boot formed by the use of a first set of removable sole can be transformed using a second set of removable sole so as to obtain a sole substantially compatible with the standard of hiking shoes, which allows easy walking and the possible fixation under the shoe of standardized accessories provided for hiking shoes, like crampons. The same set of footwear allows the practice of skiing safely and optimal walking;
• this transformation of the ski sole into a hiking sole and vice versa is simple and suitable for mounting anywhere, even without tools;
• a common point of the various solutions described is to allow a transformation which is based on a fixing means including a locking means adapted to many uses, that is to say allowing a large number of processing operations such as several transformations by day of use of the shoe, without causing significant wear of the elements of the shoe. This technical effect allows us to name this essential element of the invention, taking into account its technical function, "locking means for many uses". Imperatively, this locking means for many uses does not include any screwing operation through the plastic material of the shoe. A result obtained by this technical effect is to allow a compact footwear assembly whose use is provided for a transformation at each change up - down. In the case of a solution with screwing, the user chooses a ski or walk option for his shoe, which he keeps for a long period of use;
• the shoe obtained is secured, the sole is locked and can not be released accidentally. The fixation made is as reliable and secure as a fixation which would be made by screwing the removable soles.

Claims (19)

Footwear assembly comprising a rigid ski-boot-type rod provided with an incomplete stem sole (1; 21; 21 '; 21 ") and comprising at the front and / or rear end in its lower part a front cooperation means and / or rear with a removable sole assembly (11; 31; 31 '; 31 "), and characterized in that it comprises: a first removable sole assembly comprising at least one sidewalk portion and a support plate and a complementary means of cooperation (14; 34; 34 '; 34 ") with the front and / or rear cooperation means of the incomplete sole, able to complete the incomplete sole of the upper to form a shoe with a sole whose configuration corresponds to the ISO 5355 standard for ski boots, a second set of removable soleplate comprising at least one part of the sidewalk and a means of cooperation (14; 34; 34 '; 34 ") of complementary soleplate with the means of cooperation before and / or back of the incomplete soleplate, suitable for complete the incomplete sole of the upper to form a shoe with a sole whose configuration substantially corresponds to the standard for hiking boots ISO 9523, a locking means (3; 23; 23 '; 23 ") for many uses for locking the first or second removable sole assembly under the incomplete sole of the shaft and comprising manual actuating means (8; 28 ', 28 "). Footwear assembly according to claim 1, characterized in that the two removable assemblies are positioned at one end of the incomplete sole of the upper and extend sufficiently under the incomplete sole to integrate the standardized areas of ski and hiking boots. Footwear assembly according to claim 1, characterized in that the removable assemblies extend substantially over the entire length of the shoe. Footwear assembly according to one of the preceding claims, characterized in that the removable assemblies comprise at least a significant portion of the front and / or rear sidewalks of the footwear assembly. Footwear assembly according to one of the preceding claims, characterized in that the removable assemblies comprise cooperation means (14; 34; 34 '; 34 ") positioned at their ends, able to cooperate with complementary shapes positioned under the incomplete soleplate of the rod (1; 21; 21 '; 21 "). Footwear assembly according to one of the preceding claims, characterized in that the removable insoles (31; 31 '; 31 ") comprise two front (32; 32';32") and rear (33; 33 '; 33 ") parts. able to cooperate respectively with the front and the rear of the incomplete sole (21; 21 '; 21 ") of rod, and connected by at least one connecting means (36; 36';36") positioned in the zone center of the incomplete sole (21; 21 '; 21 "). Footwear assembly according to the preceding claim, characterized in that the locking means (23) for many uses is at least partially related to the incomplete sole (21) rod in the central area where the means (s) is (s) link (36; 36 '; 36 ") between the two front and rear parts of the removable sole. Footwear assembly according to claim 6, characterized in that the locking means (23 '; 23 ") for many uses is directly connected to the means (s) of connection (36';36") between the two parts front and rear of the removable sole independently of the incomplete stem sole (21 ', 21 "). Footwear assembly according to claim 8, characterized in that the two front (32 ', 32 ") and rear (33', 33") portions of the removable soleplate can be locked at different spacings in order to adapt to footwear. different sizes. Footwear assembly according to one of the preceding claims, characterized in that the locking means (3; 23; 23 '; 23 ") for many uses does not include a screwing operation in the plastic material of the shoe. Footwear assembly according to one of the preceding claims, characterized in that the locking means (3) comprises an axis (5) comprising at least a truncated portion (4) rotatably mounted in a space (6) arranged under the surface of the incomplete soleplate (1), manually actuable via its lateral ends (8), which can occupy a first open position in which the truncated portion (4) frees a space (9) for positioning the removable soleplate (11) and a second locking position in which the flat portion formed by the truncated portion (4) cooperates with an extension (15) of the removable sole (11) to lock it. Footwear assembly according to one of the preceding claims, characterized in that the locking means (23) comprises a circular plate (25) rotatably mounted under the surface of the incomplete soleplate Rod (21), manually actuable by a button (28), at least one longitudinal bolt (24) fixed towards the periphery of the plate (25) and guided so as to remain substantially extended in the longitudinal direction of the shoe, in order to able to occupy two positions, a first open position in which it does not cooperate with a removable sole and a locking position in which it extends to cooperate with a keeper (35) of the removable sole which is thus locked. Footwear assembly according to the preceding claim and claim 6, characterized in that two bolts (24) are mounted on the plate (25) diametrically opposite to cooperate with two strikers (35) respectively positioned on the front parts (32). and rear (33) of the removable soleplate, in that the two front (32) and rear (33) parts are connected by two connecting rods (36) positioned laterally, and in that the button (28) of the locking (23) is accessible under the surface of the shoe between these two connecting rods (36). Footwear assembly according to claim 8, characterized in that the locking means (23 ') is mounted on two extensions (36'a, 36'b) of the two front parts (32') and rear (33 ') of the sole removable, comprises a latch (25 ') rotatably mounted about a horizontal and transverse axis (26') of a first extension (36'a), manually actuable by a button (28 '), the latch (25') ) can occupy a first open position and a second locking position in which it cooperates with a tooth (35 ') of the second extension (36'b) removable sole (31') to lock it. Footwear assembly according to claim 8, characterized in that the locking means (23 ") is mounted on two extensions (36" a, 36 "b) of the two front (32 ") and rear (33") portions of the removable sole, the locking means (23 ") comprising a rod (25") mounted on the first extension (36 "a) in a transversally translatable manner , actuable by a button (28 ") on one end, and having a ring (24") on its circumference, the shank (25 ") being able to occupy a first open position and a second lock position in which the ring (24") ") cooperates with a circular tooth (35") of the second extension (36 "b) of the removable sole to lock it. Footwear assembly according to the preceding claim, characterized in that the rod (25 ") is under the effect of a return spring (26") which tends to push the rod into its locking position. Footwear assembly according to one of the preceding claims, characterized in that it further comprises means for securing the actuating means in the locking position so as to prevent its accidental actuation. Footwear assembly according to one of the preceding claims, characterized in that the locking means (3; 23; 23 '; 23 ") for many uses comprises manual actuating means (8; 28; 28';28"; ) does not require a tool. Footwear assembly according to one of the preceding claims, characterized in that the locking means (3; 23; 23 '; 23 ") for many uses comprises manual actuating means (8; 28; 28';28"; ) simple and user-friendly for a rotation of at most half a turn of a locking element (5; 25; 25 ') or a translation of at most a few millimeters of a locking element (25 ").

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