RU2185764C2 - Sportive boot sole and sportive boot - Google Patents

Abstract

FIELD: shoe industry. SUBSTANCE: sportive boot sole has at least one binder 10,20 with sportive article or apparatus extending along axis strictly transverse to longitudinal axis of said sportive boot. Binder is attached inside sole by means of anchor devices 12,22 arranged in plane substantially perpendicular to longitudinal axis 2 of boot sole independently one with respect to another. In preferable embodiment, each binder 10,20 is defined by U-shaped loop, wherein each side leg 12,22 is attached by anchoring method in strictly vertical direction inside said sole. Such construction allows sole to be bent within wide range of lengths at both sides of each point of anchoring attachment of connection members and, thus, total flexibility of sole to be increased without deteriorating strength of anchoring attachments. EFFECT: simplified structure and improved quality of boot sole. 14 cl, 15 dwg

Description

 The present invention generally relates to the design of sports shoes, in particular sports shoes for those sports that are related to sliding, such as, for example, cross-country skiing or ice skating, as well as cycling, in which these shoes must be attached in one way or another to the appropriate a sports product, while maintaining the possibility of a free turn of the foot in the process of practicing the respective sport, as well as outside of these activities, for example during normal walking in these sports shoes.

 In the sports mentioned above, in particular in cross-country or flat skiing, numerous methods of attaching the boot to the corresponding sports product have been investigated.

 So the traditional way of attaching a ski boot to a ski for flat running consists in pressing this boot to the ski with the help of a bracket that interacts with the front protruding part of the sole and presses this part to the ski.

 This method of attaching a ski boot prevents the athlete’s foot from completely reversing, as his foot is fixed on its entire front. In order to eliminate this drawback, various systems for hinging a sports ski boot with a cross-country ski about a certain axis fixed in the transverse direction on the boot have been proposed.

 Different positions and different ways of anchoring this hinge axis in front of the ski boot, at the level of the metatarsus, using inserts and other techniques have been tested in practice with more or less success.

In essence, the problem in this case is to find an acceptable compromise between the numerous and completely contradictory requirements, namely:
- the possibility of maximizing the athlete's foot deployment, necessary to obtain the greatest impulse or step amplitude, depending on the particular sport;
- optimal control and direction of the sliding organ or sports product, which theoretically can be achieved only by means of constant "contact" of the athlete's foot with this sliding organ or sports product, which by definition is incompatible with the deployment of the foot;
- a sufficiently strong anchor fastening of the insert or the axis of the hinge in the sole of the shoe in such a way as to exclude the possibility of tearing the hinge axis or the insert in the process of practicing the respective sport.

 The aforementioned problem was partially solved in the source FR 2739788, which discloses a boot system / device for attaching a shoe to a sports product, in which the shoe contains two anchoring means formed by transverse axes, one of which is located in the front of the shoe and the other is located exactly on the level of the zone of the metatarsophalangeal joint of the foot, and in which the mounting device is made in such a way as to enable the boot to rotate around the first axis of the anchoring and provide the impact of a constant elastic return force on the second axis of the anchoring, directed towards this sports product.

 Thus, the fact of the existence of means of elastic boot return in the direction of this sports product, located not in the front of this boot, as is the case with devices of this type known today, but behind the means of attaching the boot to this sports product, allows us to control this shoe in relation to the given organ of sliding even when this shoe is lifted.

 Such a boot / fastening system allows, therefore, to reconcile the problems of leg raising and control and management of the boot with respect to this sports product, which in principle provides optimal conditions for the athlete's foot to unfold.

 However, such a turn of the foot, in particular, in the final phase of rotation around the metatarsophalangeal joint, can only be achieved by using a boot that has special or extreme intrinsic flexibility in its entire front part.

 Such a specific requirement of a very high flexibility of the boot turns out to be difficult to compatible with the need for a firm anchoring of the axes of rotation of the boot or means of its connection with this sports product or the above-mentioned inserts fixed in this sports boot in the above-mentioned zone.

 Indeed, the technology of anchoring various elements, known, for example, from sources FR 2533421, WO 88/05271 or FR 2645038, without exception implies the use of one or another insert made either from one or another solid plastic material or from a metal passing along a strictly horizontal plane in the longitudinal direction of the sole of this sports shoe and accordingly increasing the rigidity of this sole.

 In the case described in US Pat. No. 4,872,272, the hinge axis is formed by the transverse branch of the U-shaped loop, the side branches of which also extend deep inside the sole of the sports shoe in its longitudinal direction and thus prevent any bending of this sole at the level of the side branches this U-shaped and stiff loop. The mechanical stress of a properly executed anchoring of the insert or axis of rotation is the higher, the softer the material of which the sole of the sports shoe is made, and the greater the magnitude of the forces acting on the insert or axis of rotation during the athlete’s training kind of sport.

 Thus, the objective of the invention is to eliminate the aforementioned disadvantages of the existing level of technology in this field and to offer the sole construction of a sports boot, providing the ability to maintain the maximum possible degree of flexibility of this sole in its front part while unconditionally maintaining the possibility of a sufficiently strong anchor it contains one or more axles of articulation or other means of connection, even when this sole is sports The boot is made of relatively soft material.

 This problem in accordance with the invention is solved by using a sole that contains at least one means of lateral connection with a sports product or projectile, each such means of communication containing anchor means inside this sole, located mainly in a plane perpendicular to the longitudinal axis this sole.

 Thus, anchor fastening is carried out mainly along the vertical plane of this sports shoe, and not in the horizontal plane of this shoe, which makes it possible to bend the sole at the greatest extent on one and the other sides of each anchor point of the connection elements and increase thus the overall flexibility of this sole without compromising the strength of the anchors.

 In the case when the construction of the sole of this sports shoe provides for the use of two or more means of connection, the anchor fastenings of each of these means of communication are independent of each other, which guarantees the possibility of bending the sole of this sports shoe in the space between two adjacent means of communication.

 Each means of communication defines the axis of the swivel, with each means of communication formed by a U-shaped loop containing a transverse branch defining the axis of the swivel and two side branches, with each side branch anchored in a vertical direction inside this sole. Advantageously, each side branch comprises a bent end oriented in a strictly horizontal direction and parallel to the transverse branch.

 The longitudinal axis of the transverse branch is located in the same strictly vertical plane as the longitudinal axis of each side branch and each curved end, as well as the longitudinal axis of the transverse branch can be located in a strictly vertical plane offset in the longitudinal direction with respect to the vertical plane containing the curved ends side branches.

 At least one strictly transverse bend gap is connected to each of the connecting means, and at least one bend gap extends in a direction strictly parallel to the direction of the metatarsophalangeal joint of the athlete's foot.

 Preferably, the sole comprises a central groove located along its longitudinal axis, and each communication means is located inside this central groove, the central groove is laterally bounded by two cheeks, each anchor means are recessed or immersed in each of the cheeks, and each bend gap extends over the entire width every cheek.

 A sports shoe comprising a sole according to the invention has also been created.

Other features and advantages of the invention will be better understood from the following description of an example of its practical implementation, where reference is made to the drawings:
figure 1 is a schematic bottom view of the sole of a sports shoe in accordance with the invention;
figure 2 is a schematic view in longitudinal section along the line II-II shown in figure 1;
FIG. 3 is a schematic sectional view taken along line III-III of FIG. 2;
FIG. 4 is a schematic sectional view taken along line IV-IV of FIG. 3;
5 is a schematic sectional view along the line VV shown in figure 3;
6 is a schematic sectional view along the line VI-VI shown in figure 2;
FIG. 7 is a schematic sectional view taken along line VII-VII of FIG. 6;
FIG. 8 is a schematic sectional view similar to the view shown in FIG. 3, anchoring in accordance with another possible implementation of the invention;
Fig.9 is a schematic view in section along the line IX-IX shown in Fig.8;
FIG. 10 is an enlarged schematic view of a detail of the sole according to the invention shown in FIG. 8;
FIG. 11 is a schematic longitudinal sectional view of a sports shoe equipped with inserts in accordance with another method for realizing anchoring;
FIG. 12 is a schematic sectional view taken along line XII-XII of FIG. 11;
Fig.13 is a perspective schematic view of the insert shown in Fig.11 and 12;
FIG. 14 is a schematic view similar to the view shown in FIG. 12, anchoring in accordance with another implementation method;
FIG. 15 is a schematic sectional view along the line XV-XV shown in FIG. 14.

 Thus, as shown in more detail in FIGS. 1 and 2, the sole 1 in accordance with the invention comprises a guide groove 3 with a cross section gradually increasing towards the toe of the shoe along the longitudinal axis 2 of this sole. Two connecting axles are installed in this guide groove, respectively, the front axle 10 and the rear axle 20, which are anchored independently from each other. Of course, in this case, any cross-sectional shape of this guide groove 3 is possible.

 The first connecting axis 10 is located exactly at the level of the front edge of the sole, while the second connecting axis 20 is located behind this first connecting axis and in the area of the metatarsophalangeal joint of the athlete's foot or slightly in front of this joint.

 The guide groove 3 is laterally bounded by two cheeks 4 of rectangular cross section protruding downward from the base 5 of the sole, which also defines the bottom of the groove 3.

 Special bending slots, respectively 6 - 9, are made in the cheeks 4 behind and / or in front of each connecting axis 10 and 20, which will be discussed in more detail in the following discussion.

 As can be seen in more detail in FIGS. 3-7, each axis of the connection 10 and 20 is formed by a bracket having a generally U-shape and containing a transverse branch 11, 21 and two lateral branches 12, 22 extending strictly perpendicular to the transverse branch 11 21. Each side branch 12, 22 is anchored in one of the side cheeks 4 of the guide groove 3 / cm. figure 3 and 6 /.

 Each transverse branch 11, 21 of the bracket extends, thus, inside the guide groove 3 in a horizontal transverse direction perpendicular to the longitudinal axis 2 of the sole.

 In addition, each side branch 12, 22 of the bracket extends mainly in the vertical plane of the sole. As is especially clearly shown in FIGS. 4 and 7, the longitudinal axis 11a, 21a of each transverse branch 11, 21 is located in the same vertical plane as the longitudinal axes, respectively 12a, 22a, of the side branches 12, 22.

 Thus, the anchoring means 12, 22 of each connecting axis 10, 20 are located mainly in a plane perpendicular to the longitudinal axis of the sole of the shoe.

 At the same time, each side branch 12, 22 of the bracket is provided with an end 13, 23 bent in the direction 13a, 23a, strictly horizontal and parallel to the transverse branch 11, 21 of each connecting means.

 In the case where the connecting axis is indicated by 20, the longitudinal axes 22a, 23a, each side branch of the bracket 22 and the bent end 23 of this side branch are located in the same vertical plane as the longitudinal axis 21a of the transverse branch 21 of the U-shaped bracket / cm. Fig.7 /.

 Thus, the connecting axis 21 and the means of its anchoring 22, 23 in this sole are mainly located in the same vertical plane of this sole and have no expansion in the longitudinal direction of this sole except for the thickness of this bracket itself. This method of anchoring to a minimum reduces interaction with the bend of the sole.

 In the case when the connecting axis is indicated by 11, that is, when it comes to the axis that is affected by the connecting forces to the maximum extent, the bent ends 13 are connected to the corresponding side branches 12 by means of a strictly horizontal part 14 extending along the longitudinal axis of this sole .

 This design of the sole of the sports shoe allows to optimize the anchor fastening of the connecting elements, limiting to a minimum the expansion or distribution in the longitudinal direction of the branches 12 - 14 of this connecting axis.

 Thus, in both of the above cases, the maximum possible bending capacity of the sole is maintained. This possibility of bending the sole is further optimized as a result of the fact that the connecting axles 10 and 20 are fixed separately.

 And finally, the bending slots 6 - 9 are associated with each connecting axis 10 and 20, respectively, and also allow you to optimize the bending conditions of this sole accordingly.

 The bend slit 6 is a transverse slit located immediately behind the curved ends 13 of the branches of the anchor axis 10.

 The bend gap 7 is also a transverse gap located exactly in front of the connecting axis 20.

 Finally, the bend slots 8 and 9 are also strictly transverse slots located behind said connecting axis 20.

 At the same time, the slot 9 is made slightly inclined with respect to the longitudinal axis 3 of the sole of the shoe and located in the direction exactly corresponding to the axis of the plus-phalangeal joint of the athlete's foot.

 In any case, slots 6 - 9 extend from one side to the other over the entire width of the side cheeks 4 of this sole.

 Thus, as it is easy to understand, the joint use of the connecting axes 10, 20, fixed in the sole in a mainly vertical manner, and the transverse slots 6 - 9 makes it possible to maximize the bend of this sole of the sports shoe.

 In FIG. 8-10 schematically shows in various sections the second possible implementation of the invention, designed to enable the anchoring of the connecting elements in the thickness E of the sole itself, made of a particularly flexible material, such as natural rubber or microporous rubber, and suitable for use any means of anchoring.

 Coupling means 103, for reasons of cost minimization, in a preferred embodiment is straightforward. In an exemplary embodiment presented here, the connecting means has a circular cross section, the diameter of which is about 4 mm. However, this connecting means may also have another cross section. As can be seen in the drawings, there is knurling or corrugation 103a at the ends of this connecting means for improving the anchoring of this connecting means to the lateral edges 105 and 106 of the sole 101, as well as the protrusion 103b. An additional fastening means 111, generally having a U-shape, is placed on these holding parts. The installation of this additional fixing means on the connecting means 103-103b is carried out by deformation of the U-shaped bracket 111.

 Made in a preferred embodiment from a thin metal sheet, this anchoring means 111, at least in its horizontal part, has a cross-section with dimensions l x e / cm. Fig.9 /, providing the fulfillment of two functions, namely the implementation due to the width l of a sufficiently large contact surface with the material from which this sole 101 is made, in order to make the sufficiently large mass 109a, 109b of this sole 101 work, and providing due to its relatively small thickness e of a sufficiently small thickness E 'of the sole, in which, however, it is possible to securely secure the means 111.

 Thus, in this case, the sole 101, even made of a sufficiently soft material and well suited for ordinary walking, is able to withstand very significant mechanical stresses arising in the connection of this sports shoe with the corresponding sports equipment, and to provide a strong fixation of the communication means 103.

 In a preferred embodiment, the aforementioned width l of the anchor means is sufficiently small, and this part of the anchor means is approximately at or above the neutral line N of the sole, that is, in the neutral zone or in the compression zone when this sole is bent so that Do not obstruct the longitudinal bending of this sole.

 And finally, this size l also exceeds the diameter D of the communication means 103 in such a way as to enable the installation of the system formed by the said communication means and the anchoring means to be held in place and in a mold for casting this sole, and to provide an increase contact surfaces and therefore increase the strength of the anchoring.

 In this sense, it should be noted that in the case when this sole 101 must be cast on the boot of the sports shoe that already contains the first mounting element 112, the anchoring means 111 may be pre-fixed in the preferred embodiment to this first mounting means 112 using rivets or other equivalent means in such a way as to further improve the quality of anchoring.

 11 - 13 schematically shows the third possible way to implement means of anchoring in accordance with the invention. This means 211 is curved in the form of a “loop hook” in order to enclose the ends 203b of the connecting means 203, and it extends in a vertical plane in the thickness of the sole 201 and ends with the tabs 211a, 211b. The paws 211a in the preferred embodiment will be oriented in the direction of the top of the sole and will have a relatively short length (approximately half size 1) so as not to significantly impair the flexibility of the sole 201. The paws 211b will be connected to each other by means of the plate 211c so that form a single manipulable block that can easily be positioned and held in a mold designed for injection molding of the sole 201.

 This plate 211c in a preferred embodiment will not have longitudinal engagement at the top of the sole with tabs 211a. In this case, the size of X will be close to zero.

 However, the sole 201 should bend particularly well at a distance FL, schematically illustrated in FIG. 11 and the corresponding distance between the toes and the metatarsal joint. If the communication device 203 is placed at or behind the forefoot joint, the flexibility of the sole becomes less effective behind this communication device 203 and the size X may be more significant in order to control, for example, a kind of stimulation of this bend of the forefoot of the athlete.

 On Fig and 15 schematically presents the third possible way to implement means of anchoring, associated with the communication tool.

 In this case, the communication means 303 is preferably bent so that its ends recessed in the zones 305 and 306 of the sole 301 are removed from the bottom surface or the walking surface 308 of this sole.

 Before pouring it into the sole 301, casting is carried out at the ends of this communication tool of the parts 312 and 313 made in the preferred embodiment of the same material as the sole of the shoe itself, but with a higher modulus of elasticity and higher hardness.

 Mentioned parts with reduced width l / cm. 15 / in order to be compatible with satisfactory longitudinal bending of the sole 301, may in a preferred embodiment comprise corrugated or curly surfaces 314 in order to improve the adhesion of these parts to the material of the sole.

 As in other methods of implementing the present invention described above, the task in this case is to transfer mechanical stresses from the means of communication of the sports shoe to the sports product or shell to a sufficiently large surface and, as a result, to ensure a satisfactory ratio between the pressing force and the surface, subjected to pressure, which makes acceptable the mechanical stress applied to the sole of the sports shoe 101, 201, 301, which, if necessary, is made of m material with a relatively small modulus of elasticity for reasons of its suitability for normal walking.

 The present invention is not limited to those methods of its practical implementation, which were described above as examples. This invention covers all possible equivalent methods for its implementation, allowing to solve the problems posed to him.

 So, for example, the communication tool may be different from a round bar.

 The system formed by the means of communication and the means of its anchoring in the sole of this sports shoe can be based, except for snapping or pouring under pressure, as mentioned above, on rolling or flaring, welding, etc.

 And finally, the anchoring means itself can consist of several separate parts with extensions or extensions in those directions that were not mentioned here, in order to provide additional effects or functions at the level of the operational behavior of the sole of the sports shoe in accordance with the invention.

 It should also be noted here that the above vertical and horizontal directions are oriented with respect to the longitudinal axis of the sole of the sports shoe, which is assumed to be horizontal.

 The present invention is not limited to its use only for ski boots used for cross-country skiing. It can be applied to any sole of sports shoes, for which similar or similar problems should be solved.

 In particular, the present invention can be applied to boots for snow surfing or to boots for skating, which must be removably attached to the appropriate sports equipment.

Claims (14)

 1. The sole of the sports shoe containing at least one means of connecting with the sports product or projectile along an axis strictly transverse to the longitudinal axis of the sole, and this means of communication contains means for anchoring it in the material of the sole, in which anchoring are located in a plane perpendicular to the longitudinal axis of the sole.  2. The sole according to claim 1, in which the means of anchoring pass mainly along the vertical plane of the sole.  3. The sole according to one of paragraph 1 or 2, in which the means of anchoring each means of communication are independent of each other.  4. The sole according to one of paragraphs. 1-3, in which each means of communication determines the axis of the swivel.  5. The sole according to claim 4, in which each means of communication is formed by a U-shaped loop containing a transverse branch defining the axis of the hinge joint and two side branches, each side branch being anchored in the vertical direction inside this sole.  6. The sole according to claim 5, in which each side branch contains a bent end oriented in a strictly horizontal direction and parallel to the transverse branch.  7. The sole according to one of p. 5 or 6, in which the longitudinal axis of the transverse branch is located in the same strictly vertical plane as the longitudinal axis of each side branch and each bent end.  8. The sole according to claim 6, in which the longitudinal axis of the transverse branch is located in a strictly vertical plane, offset in the longitudinal direction with respect to the vertical plane containing the curved ends of the side branches.  9. The sole according to one of paragraphs. 1-8, in which at least one strictly transverse bending gap is connected with each of the connecting means.  10. The sole according to claim 9, in which at least one crevice of the bend extends in a direction strictly parallel to the direction of the metatarsophalangeal joint of the athlete's foot.  11. The sole according to one of paragraphs. 1-10, in which this sole contains a Central groove located along its longitudinal axis, as well as the fact that each means of communication is located inside this Central groove.  12. The sole according to claim 11, in which the central groove is laterally bounded by two cheeks and each anchoring means is recessed or immersed in each of the cheeks.  13. The sole according to claim 12, in which each bend gap extends across the entire width of each cheek.  14. A sports shoe containing a sole according to any one of paragraphs. 1-13.

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