EP1945053A1

EP1945053A1 - Shoe, particularly an athletic shoe

Info

Publication number: EP1945053A1
Application number: EP06805761A
Authority: EP
Inventors: Martin GÄNSLER; Richard G. Ivester
Original assignee: Puma AG Rudolf Dassler Sport
Current assignee: Puma SE
Priority date: 2005-11-02
Filing date: 2006-09-19
Publication date: 2008-07-23
Also published as: DE102006012867A1; JP2009514575A; US20080276491A1; WO2007039088A1; AU2006299245A1; KR20080074928A; BRPI0618347A2; TWM332400U

Abstract

The invention concerns a shoe, particularly an athletic shoe, comprising a shoe upper part (1) and a sole (2). At least one cushioning element (3) is placed above or inside the sole (2). This cushioning element (3) is formed from a number of webs (4) that form cavities (5) extending horizontally and transversally to the longitudinal direction (L) of the shoe. In order to improve the spring and cushioning behavior as well as the pronation and supination behavior of the shoe, the invention provides that the shoe has a hind foot or heel shell (12) to which the at least one portion of the webs (4) directly adjoin.

Description

Shoe, in particular sports shoe

The invention relates to a shoe, in particular a sports shoe, with a shoe upper and a sole, wherein above or in the sole a damping element is arranged, wherein the damping element is formed of a plurality of webs which form cavities, which are horizontal and transverse to the longitudinal direction of the Shoe extend.

A sports shoe of this type is known for example from DE 34 40 206 C2. Here, the sole of the shoe is provided with a damping element which has a number of cavities which, when used as intended, ie. H. when the shoe rests on the ground, enforce the sole transverse to the longitudinal direction of the shoe. This gives the shoe or its sole a desired damping behavior.

Other solutions have also become known with which it is possible to influence the spring and damping properties of a shoe. WO 01/17384 A2 describes a sole for a shoe in which a number of ribs, which have a curved shape, are positioned in the region of the back of the foot between a carrier or inner part and an outer sole. It is thus achieved that, when the sole is loaded with impact forces, the ribs are bent, with the rib taking on an almost semiellipsoidal shape. Furthermore, from DE 20 2005 007 867 Ul a shoe of the type mentioned, in which the damping element is formed by two spaced apart and mutually parallel plates, namely a cover plate and a bottom plate, wherein between the two plates Extending webs which form said cavities. Such a solution is sketched in FIG. 1; there is the rear part of a shoe seen in the side view. The damping element 3, which integrates into the sole 2, has a cover plate 15 and a base plate 16, which acts simultaneously as an outsole, with webs 4 extending between the two plates and forming cavities 5.

In Fig. 2, the shoe shown in Fig. 1 is sketched when hitting the heel on the floor. The foot force F _F calls as reaction force, the ground force F _B , both forces are directed substantially in the direction of the vertical V. The foot force F _F - in this case substantially transferred over the heel of the wearer of the shoe - acts approximately at the point outlined, while the ground force F _{B is introduced} at the rear end of the shoe in the sole. As a result, both forces are inevitably - viewed in the direction of the horizontal H - a certain distance apart.

As is immediately apparent from Fig. 2, therefore, occur when the shoe hits the ground in the manner outlined shear forces Fs that move the bottom and the cover plate relative to each other in the longitudinal direction of the shoe and so deform the structure of the damping element 3, such as it is indicated in Fig. 2. The previously rectangular in the side view of cavities 5 (see Fig. 1) are deformed and now have a diamond-shaped contour, which may adversely affect the spring and DämpfVerhalten of the shoe. It is disadvantageous in the aforementioned known embodiments of soles and their damping elements so that the influence on both the damping and spring properties and on the pronation and supination when hitting the shoe on the ground is limited or limited possible. It is desirable to have an influencing parameter which makes this possible in an improved way.

The invention is therefore based on the object, a shoe, in particular a sports shoe, of the type mentioned in such a way that in a better way to the spring and damping behavior of the shoe when hitting the heel on the ground and on the pronation and supination behavior of Schuhs influence can be taken. It should therefore be proposed a structural design of a shoe of the type mentioned, with which the deformation of the damping element and the tilting of the shoe can be influenced by the shoe longitudinal axis when hitting the shoe on the ground.

The solution to this problem by the invention is characterized in that the shoe has a Hinterfuß- or heel cup to which at least a portion of the webs immediately adjacent.

As will be seen in detail later (see Fig. 3), so that the adverse deformation of the damping element when hitting the shoe on the ground is largely avoided, so that on the one hand good spring and damping properties of the damping element are ensured, but on the other hand no negative deformation of the element comes.

It is preferably provided that the damping element extends up to the rear end of the shoe and around the heel upwards. After that follows So the Dämpfüngselement the course of the heel cup at least partially, which enhances the desired effect. Thus, in order to achieve certain spring and damping properties even in the rearmost or rearward region of the shoe, the damping element can extend to a height of 40% to 75% of the total shoe height in the heel region. As the end of the damping element while the last web of the damping element is considered.

The damping element may have a number of planar, flat and interconnected webs, wherein it is advantageously provided that at least a portion of the cavities seen from the shoe side of a polygonal, in particular quadrangular, pentagonal or hexagonal, boundary have. Alternatively or additionally, it is also possible that the damping element has a number of curved, flat and interconnected webs. With the said formation of the webs - flat and curved - all conceivable cases are detected, including cavities whose boundary surfaces are trough-shaped, tubular or oval.

On the underside of the damping element, an outsole, preferably with a constant thickness, can be arranged. The outsole may extend over the entire area in which the damping element extends. In addition, it can also be provided that the outsole extends beyond the region of the damping element.

A particularly favorable manufacturing method and a compact design of the component are possible when the Hinterfuß- or heel cup, the Damping element and / or the outsole are formed as a one-piece injection molded part.

The transmission of power from the foot to the floor or vice versa is further optimized if it is provided according to a development that at least a portion of the webs from the side of the shoe, viewed perpendicular to the Hinterfuß- or heel cup and / or on the outsole.

The Hinterfuß- or heel cup is preferably designed as a convex structure, d. H. that the surface of the Hinterfuß- or heel cup is formed in any case in the heel area in two mutually perpendicular and lying in the surface plane directions curved.

The influence on the pronation and supination behavior of the shoe can be positively influenced if it is provided that at least one incision is made in at least one part of the damping element which subdivides the damping element into at least two partial elements arranged preferably symmetrically to the median plane of the shoe.

The incision preferably has - viewed in the longitudinal direction of the shoe - a U-shaped or V-shaped configuration. The flanks of the V-shaped notch preferably enclose an angle between 10 ° and 60 °, preferably between 15 ° and 45 ° with the vertical.

The lateral outer boundary surfaces of the sub-elements advantageously extend at least in sections, with the boundary surfaces including an angle between 0 ° and 60 °, preferably between 15 ° and 45 °, with the vertical. The angle of the flanks of the V-shaped cut to the vertical and the angle of the boundary surfaces to the vertical can be the same size. But it can also be alternatively provided that the two angles are different in size. The incision may extend to or close to the hindfoot or heel cup.

The incision can be seen in the longitudinal direction of the shoe only in the rear foot area of the shoe. It can extend over a length of between 5% and 45%, preferably between 15% and 35%, of the length of the shoe, viewed in the longitudinal direction of the shoe. The lower values of the extent of the incision apply in particular to the case in which several incisions in the longitudinal direction of the shoe follow one another.

The maximum width of the incision may be between 10% and 50%, in particular between 20% and 40%, of the width of the shoe in the region of the contact surface of the shoe on the ground. The lower values of the extent of the incision apply in particular to the case in which two or more incisions are arranged alongside one another in the longitudinal direction of the shoe.

The outsole, which is optionally arranged on the underside of the damping element (eg glued-on), is - like the damping element - partially interrupted in the case of the presence of an incision over the width of the shoe.

The parts of the sole and in particular the damping element are preferably made of plastic, in particular of thermoplastic material. In this case, preference is given in particular to polyethylene, polypropylene, polybutane, polyamide, polyurethane or a mixture of at least two of these Thought plastic. The plastic can be translucent or transparent. The outsole may also be made of plastic, preferably polyethylene, polypropylene, polybutane, polyamide, polyurethane or a mixture of at least two of these plastics, or of rubber.

The material of the individual components of the damping element and their geometric dimensions can be selected expertly for determining the spring and / or damping properties of the damping element.

Due to the inventive design of the shoe receives an improved support against forces or moments that shear the shoe when hitting the ground in the direction of the shoe longitudinal axis and / or want to rotate the shoe longitudinal axis. As a result, both the spring and damping behavior of the shoe when placed on the floor as well as the pronation and supination behavior of the shoe can be influenced in a targeted manner. This is also possible with relatively simple means, so that the influence can be done inexpensively.

By the proposed measures, it is also possible to influence the spring and damping properties of the sole or the damping element. The spring stiffness as absolute size can be adjusted via the thickness of the webs of the damping element and / or on the size of the individual cavities.

The production of the proposed damping element and the entire shoe is possible in a simple manner and inexpensively, for which known methods are used. In the drawings, embodiments of the invention are shown. Show it:

1 shows the rear part of a provided with a damping element sports shoe in the side view according to the prior art,

2 shows the shoe of Figure 1 when he hits the heel on the ground,

3 shows an embodiment of the shoe according to the invention when hitting the heel on the ground,

Fig. 4 is a perspective view of the rear part of a shoe, a

Embodiment of the invention represents

Fig. 5 shows the rear part of a sports shoe according to the invention in

Longitudinal section seen from the side,

6 shows the section A-B through the shoe according to FIG. 5, FIG.

Fig. 7 shows the view of the rear part of the shoe according to FIG. 5 or 6 from below, d. H. on the outsole and

8a to 8d show various embodiments of the damping element, wherein

Cutouts of the damping element are shown in the side view. FIG. 4 shows an embodiment of the invention, wherein the shoe partially shown there comprises a shoe upper 1 and a sole 2. In the sole 2, a damping element 3 is integrated, wherein the damping element 3 is formed from a number of webs 4, which form cavities 5, which extend horizontally and transversely to the longitudinal direction L of the shoe.

It is essential that the shoe has a Hinterfuß- or heel cup 12, to which at least a portion of the webs 4 immediately adjacent. 4 shows that the upper, vertically extending webs 4 of the damping element 3 impinge perpendicular to the convex surface of the heel cup 12 and - seen across the width of the shoe - follow the convex course of the heel cup 12 (see also FIG. 6). The damping element 3 is - seen in the longitudinal direction L - not flat, but the course of the damping element 3 follows the course of the heel cup 12, d. H. in the rear heel area, the damping element curves upwards.

The attached at the bottom of the damping element 3 outsole 14 follows accordingly, d. H. over distances between heel cup 12 and outsole 14 results in a gap with a substantially constant distance, which follows the course of the heel cup and in which the damping element 3 is arranged.

This ensures that there is no adverse deformation upon impact of the shoe with the heel on the ground, which would shear the damping element, as is the case in the prior art according to FIGS. 1 and 2. Rather, it is apparent from the illustration according to FIG. 3 that the damping element 3 is indeed compressed and therefore deformed, but that shearing (as in FIG. 2) does not take place or at least only in a subordinate manner. This is achieved by the fact that due to the use of Heel cup 12, the foot force F _F and the ground force F _B are substantially in the same plane, d. h it is not - as in Fig. 2 - a distance a in the direction of the horizontal H between the two forces, so that the adverse deformation of the damping element 3 (as shown in Fig. 2) is prevented.

To improve the pronation and supination behavior of the shoe, the following further measures may optionally be taken:

In Fig. 5, the rear part of an alternative trained shoe can be seen. In the sole 2 here a damping element 3 is integrated, which consists of a number of webs 4, which are formed as plate parts or as curved walls, which - apart from an even discussed incision - extend over the entire width of the shoe. The existing of the individual webs 4 damping element 3 is up again directly with the

Behind foot or heel cup 12 connected. Below the outsole 14 is again arranged on the damping element 3. It can also be seen that the damping element 3 also extends over the rear foot region 13 here.

As can be seen from the illustration according to FIGS. 6 and 7, the damping element 3 does not extend uninterruptedly over the entire width of the shoe, but a V-shaped recess 6 is provided. The recess 6 is defined by two flanks 8 and 9 (see Fig. 6), which are straight and enclose an angle α to the vertical V. This angle is in the exemplary embodiment at about 30 °, but values between 15 ° and 45 ° are preferably suitable. It can also be seen that the laterally outer boundary surfaces 10 and 11 of the damping element 3 do not drop vertically, but also extend at an angle to the vertical V, at least in the lower region of the Damping element 3. This angle is indicated by ß. Not necessarily, but preferably the angles α and ß are the same size.

It is also possible that more than one incision 6 is made in the sole or in the damping element 3. In this case, for example, two or more incisions 6 which follow each other in the longitudinal direction L of the shoe may be provided. It is also possible that viewed in the longitudinal direction L two or more juxtaposed incisions 6 are provided which divide the damping element 3 across the width of the shoe into a plurality of sub-elements.

This results in a configuration with which the damping element 3 is subdivided into two subelements 3 'and 3 ", which in any case extend laterally and downwardly away from each other in the lower region of the damping element 3, both subelements 3', 3" being preferred. but not necessarily, are formed symmetrically to the median plane 7 of the shoe. By asymmetries of the sub-elements 3 ', 3 ", it is possible to influence the pronation and supination behavior of the shoe in a targeted manner.

From Fig. 7 shows how large the expansion of the incision 6 can be selected. The length L _{E of} the incision 6 is in the exemplary embodiment about 25% to 30% of the total length L _{8 of} the shoe, with values between 15% and 35% being preferred. While the incision 6 (see Fig. 6) extends close to the rear foot or heel cup 12 and forms the tip of the "V" there, the incision 6 in the region of the outsole 14 has its maximum width B _E , preferably between 20 % and 40% of the width B _{5 of} the shoe is. Figures 8a to 8d show various embodiments of the damping element 3, as far as the formation of the webs 4 is concerned.

In Fig. 8a, a honeycomb-shaped body is realized, i. H. Here, the individual webs 4 form hexagonal or quadrangular elements, which are composed to form the structure of the damping element 3. According to FIG. 8b, the webs 4 are arranged so that pentagons (pentagons) result. A very simple rectangular configuration of the individual cavities 5 through the webs 4 can be seen in Fig. 8c (solution of FIG. 1). In the solution of Figure 8d only flat, so plate-shaped webs 4 are provided which connect the outsole 14 with the Hinterfuß- or heel cup 12; the webs are arranged at an angle to the vertical and parallel to each other.

As can be seen in Fig. 5, the damping element 3 is not flat here, but it follows the course of Hinterfuß- or heel cup 12. In this case, the damping element 3 extends to a certain height (the uppermost web 4, almost extends horizontally, forms a conclusion of the damping element 3), which corresponds to about half of the total height of the shoe in the heel area.

While the exemplary embodiment shows only the structure of the damping element 3 in the rear foot region 13, the same can also apply to the forefoot region.

The damping element 3 together with Hinterfuß- or heel cup 12 is preferably formed as a one-piece injection molded part (preferably made of EVA). The outsole 14 can then be glued to this part. LIST OF REFERENCE NUMBERS

1 shoe upper

2 sole

3 damping element

3 'subelement

3 "subelement

4 footbridge

5 cavity

6 incision

7 median plane

8 flank

9 flank

10 lateral outer boundary surface

11 lateral outer boundary surface

12 hindfoot or heel cup

13 hindfoot area

14 outsole

15 cover plate

16 base plate

L longitudinal direction of the shoe

V vertical

H Horizontal α Angle ß Angle a distance

L _E length of the incision

Ls length of the shoe

B _E maximum width of the incision

Bs width of the shoe

F _F foot force

FB ground force

Fs shear force

Claims

claims

1. shoe, in particular sports shoe, with a shoe upper (1) and a sole (2), wherein above or in the sole (2) at least one damping element (3) is arranged, wherein the damping element (3) from a plurality of webs (4 ) which form cavities (5) which extend horizontally and transversely to the longitudinal direction (L) of the shoe,

characterized,

the shoe has a hindfoot or heel cup (12) to which at least part of the webs (4) directly adjoin.

2. Shoe according to claim 1, characterized in that the

Damping element (3) extends to the rear end of the shoe and around the heel upwards.

3. Shoe according to claim 1 or 2, characterized in that the damping element (3) has a number of flat, areal trained and interconnected webs (4).

4. Shoe according to claim 3, characterized in that at least a part of the cavities (5) viewed from the shoe side of a polygonal, in particular quadrangular, pentagonal or hexagonal, boundary have.

5. Shoe according to one of claims 1 to 4, characterized in that the damping element (3) has a number of curved, flat and interconnected webs (4).

6. Shoe according to one of claims 1 to 5, characterized in that on the underside of the damping element (3) has an outsole (14) is arranged.

7. Shoe according to one of claims 1 to 6, characterized in that at least a part of the webs (4) viewed from the side perpendicular to the Hinterfuß- or heel cup (12) and / or on the outsole (14).

8. Shoe according to one of claims 1 to 7, characterized in that the surface of the Hinterfuß- or heel cup (12) in any case in

Heel area is formed curved in two mutually perpendicular and lying in the surface plane directions.

9. Shoe according to one of claims 1 to 8, characterized in that the Hinterfuß- or heel cup (12), the damping element (3) and / or the outsole (14) are formed as one-piece injection molded part.

10. Shoe according to one of claims 1 to 9, characterized in that at least in a part of the damping element (3) at least one incision (6) is introduced, the damping element (3) in at least two sub-elements (3 ', 3 ") divided.

11. Shoe according to claim 10, characterized in that the at least two partial elements (3 ', 3 ") are arranged symmetrically to the median plane (7) of the shoe.

12. Shoe according to claim 10 or 11, characterized in that the

Incision (6) viewed in the longitudinal direction (L) of the shoe has a U-shaped configuration.

13. Shoe according to claim 10 or 11, characterized in that the

Incision (6) viewed in the longitudinal direction (L) of the shoe has a V-shaped configuration.

14. Shoe according to claim 13, characterized in that the flanks (8, 9) of the V-shaped notch (6) with the vertical (V) an angle

(α) between 10 ° and 60 °, preferably between 15 ° and 45 °.

15. Shoe according to one of claims 10 to 14, characterized in that the lateral outer boundary surfaces (10, 11) of the sub-elements (3 ', 3 ") at least partially straight, wherein the boundary surfaces (10, 1 1) with the vertical (V) include an angle (β) between 0 ° and 60 °, preferably between 15 ° and 45 °.

16. Shoe according to claim 15, characterized in that the angle (α) of the flanks (8, 9) of the V-shaped notch (6) to the vertical (V) and the angle (ß) of the boundary surfaces (10, 11) for Vertical (V) are the same size.

17. Shoe according to claim 15, characterized in that the angle (α) of the flanks (8, 9) of the V-shaped notch (6) to the vertical (V) and the angle (ß) of the boundary surfaces (10, 11) Vertical (V) are not the same size.

18. Shoe according to one of claims 10 to 17, characterized in that the incision (6) extends to or close to the Hinterfußoder heel cup (12).

19. Shoe according to one of claims 10 to 18, characterized in that the incision (6) seen in the longitudinal direction (L) of the shoe is located only in the rear foot region (13) of the shoe.

20. Shoe according to one of claims 10 to 19, characterized in that seen the incision (6) in the longitudinal direction (L) of the shoe extending over a length (L _E ) between 5% and 45%, preferably between 15% and 35%, of the length (L _s ) of the shoe.

21. Shoe according to one of claims 10 to 20, characterized in that the maximum width (B _E ) of the incision (6) in the footprint of the shoe on the ground between 10% and 50%, preferably between 20% and 40% which is the width (B _s ) of the shoe.