KR20080074928A - Shoe, particularly an athletic shoe - Google Patents

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

Shoes, particularly an athletic shoe

The present invention is a shoe, in particular a sport shoe, with a damping element arranged above or within a shoe upper and a window, wherein the damping element forms a plurality of webs which extend horizontally and transversely with respect to the longitudinal direction of the shoe. A shoe formed by a web, in particular a sport shoe.

Sport shoes of this type are known, for example, from DE 34 40 206 C2. In this patent application, when the window of the shoe is used as intended, i.e. when the shoe is placed on the ground, the window of the shoe has a damping element having a plurality of cavities passing through the window transversely to the longitudinal direction of the window. Is provided. As a result, the shoe or its window is provided with the required damping properties.

Other methods are also known that are capable of affecting the cushioning and damping properties of the shoe. WO 01/17384 A2 describes a window for a shoe when a number of ribs having a curved shape are located in the support or in the foot region between the inner and outer windows. This configuration achieves the effect that when the window is loaded by the impact force of the foot, bending of the lip is performed and the lip becomes almost semi-elliptical in shape.

In addition, DE 20 2005 007 867 U1 has the above-described form in which the damping elements are formed by two panels arranged parallel to each other, ie, an upper panel and a lower panel, in which a web forming a cavity extends between the two panels. Started shoes. Such a method is shown schematically in FIG. 1; You can see the back of the shoe in this side view. The damping element 3, which is integrated in the window 2, has an upper panel 15 and a lower panel 16-simultaneously acting as an outsole-and the web 4 extends between the two panels so that the cavity 5 To form.

FIG. 2 schematically shows the shoe shown in FIG. 1 when the heel hits the ground. FIG. The force of the foot (F _F ) induces ground force (F _B ) as a reaction force, with both forces directed in a substantially vertical (V) direction. The force of the foot (F _F )-in this case the force of the foot transmitted through the heel of the wearer of the shoe-generally acts at the position shown schematically, but the ground force (F _B ) is applied from the rear end of the shoe to the window. Induced. As a result, the two forces-essentially in the horizontal H direction-are invariably spaced from each other.

As evidenced directly from FIG. 2, therefore, shear forces F _s occur when the shoe is impacted on the ground in a schematic representation, displacing the lower and upper panels from each other in the longitudinal direction of the shoe, and thereby This deforms the structure of the damping element 3 as shown in FIG. 2. In the side view (see FIG. 1), the previously rectangular cavity is deformed and now takes the shape of a rectangle, which may have an adverse effect on the cushioning and damping properties of the shoe.

Thus, with the previously known forms of windows and their damping elements, the effects on both the damping and cushioning properties and the pronation and supination properties when the shoe is impacted to the ground under certain circumstances. Only or in a limited range. There is a need to find influence parameters that enable this in an improved way.

Accordingly, it is an object of the present invention to provide a shoe of the type described at the outset in such a way that the cushioning and damping properties of the shoe when the heel is impacted to the ground and also the inner and outer characteristics of the shoe can be affected in an excellent manner, In particular, developing sports shoes. Therefore, it is proposed a structural form of the shoe of the type described above in which the deformation of the damping element and the inclination of the shoe can be affected with respect to the longitudinal shoe axis when the shoe is impacted on the ground.

Achieving this object according to the invention is characterized in that the shoe has a heel shell or a foot that is directly joined by at least some web.

As can be seen in detail below (see FIG. 3), adverse deformation of the damping element when the shoe is impacted to the ground is consequently greatly reduced, while on the one hand good cushioning and damping properties of the damping element are ensured, On the other hand, there is no negative deformation of the element.

Preferably the damping element is provided to wrap up and extend upwards to the rear end of the shoe and to the heel. Thus, at least in part, the damping element follows the shape of the heel shell, which enhances the required effect. Thus, in order to obtain certain cushioning and damping properties at the rear or rear of the shoe, the damping element can extend from 40% to 75% of the overall height of the shoe at the heel area. The last web of damping element is in this case considered to be the end of the damping element.

The damping element may have a plurality of webs formed in planar, two-dimensional form and connected to each other, wherein at least some of the cavities have a border of polygonal, in particular rectangular, pentagonal or hexagonal, from the shoe side. It is advantageous. Unlike or in addition to the forms described above, it is also possible for the damping element to have a plurality of curved two-dimensionally formed and interconnected webs. Shapes of the webs described above—both planar and curved—include all conceivable cases and even their cavities whose boundary surfaces are tube-shaped, tubular or oval.

On the underside of the damping element an outsole, preferably an outsole of constant thickness, can be arranged. The outsole may extend all over the damping element. It may also be provided that the outsole extends beyond the damping element portion.

Particularly good production modes and compact part forms are possible when the foot or heel shell, damping element and / or outsole are formed of an integral injection molded part.

Where the force is transmitted from the foot to the ground or vice versa, in accordance with the development of the invention it is provided that at least part of the web is erected perpendicular to the forefoot or heel shell and / or to the outsole when viewed from the side of the shoe. If so, it is further optimized.

The trailing portion or heel shell is preferably formed in the convex shape. That is, the surface of the foot or heel shell is formed to be bent in at least two directions, which in some cases lie on the surface perpendicular to each other at the heel site.

Intra- and out-of-shoe properties of the shoe are advantageous in the case where one or more incisions are formed in at least a portion of the damping element, so as to divide the damping element into two or more part-elements which are preferably arranged symmetrically with respect to the intermediate face of the shoe. May be affected.

The incision is preferably in the form of a U-shape or a V-shape in the present case-when viewed in the longitudinal direction of the shoe. The flank of the V-shaped incision preferably forms an angle of 10 ° to 60 °, preferably 15 ° to 45 ° with the vertical.

The outer boundary surface of the part-element is advantageously stiff in at least a certain part, and the boundary surface forms 0 ° to 60 °, preferably 15 ° to 45 ° with the vertical.

The angle of the side of the V-shaped incision with respect to the vertical and the angle of the boundary surface with respect to the perpendicular may in the present case be the same size. However, it is also alternatively possible that the two angles are of different sizes. The incision can in this case extend to or almost to the rear foot or heel shell.

The incision may only be located at the rear of the shoe when viewed in the longitudinal direction of the shoe. It may extend-in the longitudinal direction of the shoe-over a length of 5% to 45%, preferably 15% to 35% of the length of the shoe. The lower limit for the extension of the incision applies in particular when a plurality of incisions extend behind one another in the longitudinal direction of the shoe.

The maximum width of the incision at the site of contact of the shoe with respect to the ground can be 10% to 50%, in particular 20% to 40% of the width of the shoe. The lower limit for the range of cutouts here applies in particular when two or more cutouts are arranged next to each other in the longitudinal direction of the shoe.

The outsole, possibly arranged underneath the damping element (eg adhesively bonded)-partly interrupted when the incision is present over the width of the shoe-similar to the damping element.

The window part and in particular the damping element part are preferably made of plastic, in particular thermoplastic material. Particular preference is given to polyethylene, polypropylene, polybutane, polyamide, polyurethane or a mixture of two or more of these plastics. The plastic can be translucent or transparent. The outsole may also consist of a plastic, preferably polyethylene, polypropylene, polybutane, polyamide, polyurethane or a mixture or rubber of two or more of these plastics.

The material of each component of the damping element and their geometric dimensions can be selected by one skilled in the art to obtain cushioning and / or damping properties of the damping element.

The form according to the invention is improved for forces or moments which tend to shear the shoe in the direction of the longitudinal shoe axis and / or tend to twist the shoe about the longitudinal shoe axis when the shoe is impacted to the ground. Provide a support surface. As a result, both the cushioning and damping properties of the shoe when the shoe is impacted by the ground and both the in- and out-of-shoe properties of the shoe can be selectively affected. It is also possible to allow the impact to be carried out at low cost by relatively simple means.

By means of the proposed means it is possible to influence the cushioning and damping properties of the window or damping element. Resilient rigidity as an absolute value can be set by the thickness means of the web of the damping element and / or by the size means of each cavity.

The production of the proposed damping element and the shoe as a whole is possible in a simple manner using known methods and at low cost.

Exemplary embodiments of the invention are shown in the drawings.

1 is a side view of the rear part of a sports shoe according to the prior art provided with a damping element.

FIG. 2 shows the shoe shown in FIG. 1 when the heel hits the ground. FIG.

Figure 3 shows the shape of the shoe according to the present invention when the heel hits the ground.

Figure 4 shows the back of a shoe showing one aspect of the invention in a perspective view.

Figure 5 shows the rear part of a sport shoe according to the invention in the longitudinal direction when viewed from the side.

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

7 shows a view of the rear part of the shoe according to FIG. 5 or 6 seen from below, ie from the outsole.

8A to 8D show various forms of damping elements, and show details of the damping elements in a side view.

One embodiment of the invention is shown in FIG. 4, wherein the partially illustrated shoe has a shoe top 1 and a window 2. A damping element 3 is integrated into the window 2, with the damping element 3 forming a plurality of webs 4 which form a cavity 5 which extends horizontally and laterally with respect to the longitudinal direction L of the shoe. Is formed by.

An important feature is that the shoe has a foot or heel shell 12 which is directly joined by at least some web 4. 4 shows that the vertically extending web 4 of the upper part of the damping element 3 meets perpendicularly to the convex surface of the heel shell 12 and follows the convex shape of the heel shell 12 when viewed through the width of the shoe. (See FIG. 6 in connection with this case). The damping element 3 is not planar-in the longitudinal direction L-and the shape of the damping element 3 follows the shape of the heel shell 12. That is, the damping element is bent upward at the rear heel portion.

The outsole 14 coupled to the bottom of the damping element 3 correspondingly follows it. That is, over a certain distance there is a gap between the heel shell 12 and the outsole 14 at a substantially constant distance, which follows the shape of the heel shell, in which the damping element 3 is arranged.

This configuration achieves the effect that when the shoe is impacted by the heel on the ground, there is no adverse deformation that can shear the damping element, as in the case of the prior art according to FIGS. 1 and 2. Rather, it is demonstrated in the drawing according to FIG. 3 that the damping element 3 is compressed and deformed accordingly, but the shearing (as in FIG. 2) is not carried out or in some cases only slightly. The effect is that the foot force F _F and the ground force F _B lie on substantially the same plane, i.e. the distance a between the two forces in the direction of the horizontal H as shown in FIG. This is achieved by the use of a heel shell 12 which results in a disadvantage that the disadvantageous disadvantage of the damping element 3 (shown in FIG. 2) is avoided.

In order to improve the inner and outer characteristics of the shoe, the following additional features may possibly be taken.

In FIG. 5, the rear of the shoe, which is formed differently, is shown. Here, the damping element 3 is integrated in the window 2, which damping element is formed as a panel part or as a curved wall extending over the entire width of the shoe-apart from the cutouts to be discussed in more detail. It includes a plurality of web (4). The damping element 3 comprising each web 4 is in this case directly connected to the rear or heel shell 12 at the top. At the bottom, the outsole 14 is arranged on the damping element 3. It can also be seen here that the damping element 3 extends over the entire foot region 13.

As can be seen from the figures according to FIGS. 6 and 7, the damping element 3 does not proceed without interruption over the entire width of the shoe, and a V-shaped cutout 6 is provided. The incision 6 is formed by two flanks 8 and 9 (see Fig. 6), which are straight and at a constant angle α with respect to the vertical V. In an exemplary embodiment, this angle is about 30 °, preferably an angle of 15 ° to 45 ° is suitable. The boundary surfaces 10 and 11 on the outside of the damping element 3 are not vertical and extend at a similar constant angle with respect to the vertical V at the bottom of the damping element 3. This angle is represented by β. It is not essential that the angles α and β are the same size, and are preferable.

It is also possible for one or more cutouts 6 to be included in the window or in the damping element 3. In such a case, for example, two or more incisions 6 can be provided which follow each other behind in the longitudinal direction L of the shoe. In addition, in the longitudinal direction L, two or more cutouts arranged next to each other are provided, which makes it possible to divide the damping element 3 into many part-elements throughout the width of the shoe.

This configuration is such that the damping element 3 is divided into two part-elements 3 'and 3 ", and these two part-elements extend laterally and downwardly from each other, widening at the bottom of the damping element 3. And two part-elements 3 'and 3 "are formed symmetrically with respect to the central face 7 of the shoe, though not necessarily. Asymmetry of the part-elements 3 'and 3 "may be used to selectively affect the in- and out-of-shoe properties of the shoe.

How large the range of the cutout 6 is selected is shown in FIG. 7. In an exemplary embodiment, the length L _E of the incision 6 is about 25% to 30% of the total length L _S of the shoe, with a value of 15% to 30% being preferred. Although the incision 6 (see FIG. 6) reaches almost to the rear foot or heel shell 12 and forms a “V”, the incision 6 is the width of the shoe B _S at the outsole 14 site. Has a maximum width B _E of preferably 20% to 40%.

8a to 8d show various forms of damping element 3 in which the shape of the web 4 is considered.

In FIG. 8A, a honeycomb-like structure is realized. In other words, here each web forms a hexagonal or square element and they are combined to form the structure of the damping element 3. According to FIG. 8B, the web 4 is arranged such that a pentagon is obtained. The shape of each of the very simple rectangular cavities 5 throughout the web 4 is shown in FIG. 8C (method according to FIG. 1). In the case of the method shown in FIG. 8D, only a flat web 4, referred to as paneling, is provided to connect the outsole 14 to the rear foot or heel shell 12; In this case, the webs are arranged parallel to each other at an angle with respect to the vertical.

As can be seen in FIG. 5, here also the damping element 3 is not planar and follows the shape of the foot or heel shell 12. In this case, the damping element 3 extends to a specific height, which generally corresponds to half of the overall height of the shoe at the heel site (almost a horizontally extending top web 4 of the damping element 3). Forms an end)

Although the exemplary embodiment shows the structure of the damping element 3 at the foot region 13, the same embodiment can also be applied correspondingly to the forefoot portion.

The damping element 3 together with the rear foot or heel shell 12 is preferably formed as an integral injection molding (preferably forming EVA). Outsole 14 may be attached to this component.

Explanation of reference numerals

1 shoe upper

2 windows

3 damping elements

3 'part-element

3 '' part-element

4 website

5 joint

6 incisions

7 center plane

8 flank

9 flank

10 Outer boundary surface

11 outer boundary surface

12 Foot or Hill Shell

13 posterior part

14 outsole

15 Upper Panel

16 Lower Panel

Longitudinal orientation of the L shoes

V vertical

H horizontal

α angle

β angle

a street

L _E incision length

L _S shoes length

B _E Maximum width of the incision

Width of B _S shoes

F _F Foot Force

F _G Floor Force

F _S shear force

Claims (21)

There is a shoe top 1 and a window 2, at least one damping element 3 is arranged above or within the window 2, with the damping element 3 being horizontal with respect to the longitudinal direction L of the shoe. And as a shoe, in particular a sport shoe, formed by a plurality of webs 4 forming a cavity 5 extending laterally, Shoes, in particular sport shoes, characterized in that the shoe has a rear foot or heel shell 12 which is directly joined by at least some web 4. 2. Shoe according to claim 1, characterized in that the damping element (3) extends upwards to the rear end of the shoe and around the heel. Shoes according to claim 1 or 2, characterized in that the damping element (3) is formed in two dimensions of the plane and has a plurality of webs (4) connected to each other. 4. Shoe according to claim 3, characterized in that at least some of the cavities (5) have a polygonal, in particular rectangular, pentagonal or hexagonal border when viewed from the side of the shoe. The shoe as claimed in claim 1, wherein the damping element is formed in a curved two-dimensional manner and has a plurality of webs connected to one another. Shoe according to one of the preceding claims, characterized in that the outsole (14) is arranged on the underside of the damping element (3). 7. The at least some web 4 according to claim 1, when viewed from the side, perpendicular to the forefoot or heel shell 12 and / or to the outsole 14. Shoes characterized by standing. The shoe as claimed in claim 1, wherein the surfaces of the trailing portion or heel shell (12) are formed to be bent in at least two directions perpendicular to one another and lying on the surface at the heel portion. 9. Shoes according to claim 1, characterized in that the trailing or heel shell (12), the damping element (3) and / or the outsole (14) are formed from an integral injection molded part. 10. The method according to any one of the preceding claims, wherein one or more cutouts (6) are formed in at least a portion of the damping element (3) to form the damping element (3) at least two part-elements (3 'and 3 "). Shoes characterized by dividing). Shoes according to claim 10, characterized in that at least two part-elements (3 'and 3 ") are arranged symmetrically with respect to the center plane (7) of the shoe. Shoe according to claim 10 or 11, characterized in that the incision (6) is U-shaped when viewed in the longitudinal direction (L) of the shoe. Shoe according to claim 10 or 11, characterized in that the incision (6) is V-shaped when viewed in the longitudinal direction (L) of the shoe. The flanks 8 and 9 of the V-shaped cutout 6 form an angle α of 10 ° to 60 °, preferably 15 ° to 45 ° with respect to the vertical V. Shoes characterized by. 15. The outer boundary surfaces 10 and 11 of the part-elements 3 ′ and 3 ″ extend linearly at least in certain portions, and the boundary surfaces 10 and 11. A shoe characterized in that it forms an angle β of 0 ° to 60 °, preferably 15 ° to 45 ° with respect to the vertical V. The angle α of the flanks 8 and 9 of the V-shaped cutout 6 with respect to the vertical V and the angle β of the boundary surface 10 and 11 with respect to the vertical V. Shoes with the same size) The angle α of the flanks 8 and 9 of the V-shaped cutout 6 with respect to the vertical V and the angle β of the boundary surface 10 and 11 with respect to the vertical V. Shoes, characterized in that they are not the same size. Shoe according to any of the claims 10 to 17, characterized in that the incision (6) extends to or almost to the rear foot or heel shell (12). Shoe according to any of the claims 10 to 18, characterized in that the incision (6) is located only in the trailing part (13) of the shoe, as seen in the longitudinal direction (L) of the shoe. 20. The incision 6 according to claim 10, wherein the cutout 6 is from 5% to 45%, preferably 15, of the length L _{S of the} shoe when viewed in the longitudinal direction L of the shoe. A shoe characterized by extending over Gili (L _E ) of between% and 35%. The method according to any one of claims 10 to 20, wherein the maximum width B _E of the incision 6 at the support surface portion of the shoe on the ground is between 10% and 50% of the width B _S of the shoe, Shoes, characterized in that 20% to 40%.

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