WO2007014712A1 - Shoe, particularly sports shoe - Google Patents

Abstract

The invention relates to a shoe, especially a sports shoe, comprising an upper (1) and a sole (2). The sole (2) is provided with a supporting part or internal part (3) that is joined in a fixed manner to the upper (1) as well as a sole element (4) which is joined to the supporting part or internal part (3). In order to make such a shoe easy to produce, the sole element (4) is joined to the supporting part or internal part (3) by means of a positive connection (5).

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 the sole has a fixed to the shoe upper part carrier or inner part and a connected to the carrier or inner sole member.

Shoes of this type are well known in the art. In order to influence the spring and damping behavior of the shoe according to desired criteria, it is further known, in particular to integrate damping elements in the midsole, so that the sole in this respect certain properties are awarded.

From WO 03/092423 Al a damping element for a shoe, in particular for a sports shoe, known which has a special construction. The damping element has a plurality of juxtaposed individual elements, each forming a spring and damping chamber in the manner of a piston-cylinder system. In the form corresponding first and second elements are connected to each other via a connecting portion, wherein upon loading of the sole, the smaller formed element enters the larger, which forms a receiving space for this purpose. The use of such damping elements in the sole has proven to be very advantageous. However, a considerable effort is required in terms of production technology in order to mount the damping element, in particular produced by injection molding, into the shoe or to integrate it into it. If the damping element is integrated into the midsole, first of all an area has to be inserted into it, or this receiving space has to be produced during production of the sole. Then the damping element must be made and this finally installed in the midsole, before it is connected to the other shoe components.

The invention is based on the invention to provide a shoe, in particular a sports shoe, of the aforementioned type, which is characterized by a simpler manufacturing method, but in particular should not be dispensed with the advantageous property of the previously known damping element. It should be possible in particular to keep the spring and damping behavior of the shoe influenceable.

The solution to this problem by the invention is characterized in that the sole element is connected to the carrier or inner part by means of a positive connection.

Preference is given to a plug connection between two parts, namely between the support or inner part and the sole element, thought that can be grouted by plugging, which can be absorbed by positive engagement, the transmission of conventional forces during use of the shoe. The positive connection between the support or inner part and the sole element may be detachably formed, whereby it is possible to remove the sole part and replace it with another if necessary. The positive connection between the carrier or inner part and the sole element may for this purpose preferably have a provided with at least one latching projection resiliently biased clip closure. By such a clip-closure, the sole part can be fixed latching on the carrier or inner part, so that sufficient resistance to stress is given by usual Usungskräfte; however, the clip closure can also be loosened again to replace the sole part if necessary.

The positive connection between the carrier or inner part and the sole element can also be designed to be insoluble as an alternative. It is particularly thought that the carrier or inner part and the sole element are glued to the positive connection with each other.

Particularly preferably it is provided that the positive connection is formed by at least one on the support or inner part or on the sole element and from the sole plane in the vertical direction (in the usual resting of the shoe on the ground) extending projection, which in a formkongruente recess in the sole element or engages in the carrier or inner part. It is provided in particular that the at least one projection on the carrier or inner part and the at least one recess is arranged on the sole element.

By this configuration, it is possible by force application between the carrier or inner part and sole element in the vertical direction, these two parts together, so that they against unintentional Separating are secured. The assembly process of the shoe is thereby considerably simplified.

The projection and the associated recess preferably have a polygonal, in particular a hexagonal, shape in a section perpendicular to the vertical direction; a circular design is possible. Preferably, a number of juxtaposed projections and recesses on the support or inner part or on the sole element is arranged.

The carrier or inner part is advantageously plate-shaped, wherein the upper side of the carrier or inner part is connected to the shoe upper and extends at least one projection from the underside of the carrier or inner part down.

Alternatively, it can also be provided that the carrier or inner part is at least partially formed as a lattice structure, wherein the upper side of the carrier or inner part is connected to the shoe upper and extending at least one projection from the underside of the carrier or inner part down. By using a grid structure, a particularly lightweight construction is possible.

There may be arranged a number of positive connection between the carrier or inner part and the sole element only in a partial region of the sole. It is particularly thought that the positive connections along the edge region of the sole are arranged. As a result, a sufficient attachment of the sole element on the carrier or inner part can be achieved with minimal installation effort. The sole element may be formed as a damping element at least over a part of the bottom tread surface of the shoe having at least a first element which extends substantially in a loading direction in the unloaded state of the damping element over a predetermined height and, formed as a hollow body, a receiving space defined, in which a corresponding second element, in the cross section of smaller dimensions than the first element can at least partially penetrate, wherein the second element extends substantially in the loading direction in the unloaded state of the Dämpfüngements over a predetermined height and is arranged coaxially with the first element. Such a damping element is already known as such and described above in WO 03/092423 A1.

In this case, a number of juxtaposed first elements may be provided which each interact with a second element. The shape of the first element may correspond in a section perpendicular to the vertical direction of those of the projection or the recess. The height of the first element can be greater than or equal to the height of the projection or the recess, whereby a defined contact of the sole element can be created on the carrier or inner part.

At least a part of the second elements may have a prismatic or cylindrical shape, wherein the prism or the cylinder is at least partially formed as a solid part. It can be provided that between 20% and 100% of the prism or cylinder volume consist of the material of the second element. It is particularly preferred that between 30% and 70% of the prism or cylinder volume consist of the material of the second element. At the end remote from the first element of the second element, an outsole can be arranged become. This can be formed by a number of individual sole parts, wherein each sole part is arranged on a second element.

The two mutually associated elements can be connected to each other via an elastic connecting portion, which extends only between the first element and the second element. In each case a first element and a second element can form a gas-tight chamber together with the connecting portion and the carrier or inner part, which can positively influence the spring and damping properties. The first element and the second element may have a mutually corresponding shape in a section perpendicular to the loading direction. Furthermore, in a section perpendicular to the loading direction, the first element and the second element may have a polygonal, in particular hexagonal, shape.

A plurality of first elements may be interconnected in their lateral region, or their lateral boundary walls may each be formed from a common section. The first element, the connecting portion and the second element are preferably formed in one piece. Then it is advantageously provided that the first element, the connecting portion and the second element are produced by a common injection molding process.

The first and / or second elements preferably have different heights, at least partially in the unloaded state of the damping element. The connecting portion may be flat or curved in the unloaded state of the damping element in a plane perpendicular to the loading direction. With the latter embodiment, the entry of the "piston" is favored in the "cylinder" under load. To do this while achieving a reset effect on pressure relief of the

Damping element can be done, the lower axial end portion of the first

Element and the upper axial end portion of the second element connected to each other via the connecting portion. It is at the

Connecting portion - as well as the first and second element - by a

Part made of elastic plastic material, so that when task a

Loading force on the damping element in the direction of loading a

Deformation takes place. The second element occurs like a piston in the receiving space of the first element.

The formation of a gas-tight chamber within the first and second elements advantageously has the consequence that, after pressure release of the damping element, the initial state is quickly reached again

Individual "piston-cylinder elements" are arranged side by side in order to form a damping element with a larger planar extension, while the first elements functioning as "cylinders" can be connected to one another, the second elements, the "pistons", preferably stand side by side.

The sole element provided with the damping element or formed by it can absorb energy when loading the sole in the direction of loading and release it again upon relief of the sole.

The elements are preferably made of plastic, in particular of thermoplastic material. In particular, preference is given to polyethylene, polypropylene, polybutane, polyamide, polyurethane or a mixture of at least two of these plastics. The plastic can be translucent or translucent. Also, the outsole may be made of plastic, preferably polyethylene, polypropylene, polybutane, polyamide, polyurethane or a mixture of at least two of these plastics, or rubber, wherein the material is not translucent or not transparent.

The material of the first element, the second element and the connecting portion and / or the geometric dimensions of these parts and / or the volume fraction of the solid part can be selected to determine the spring and / or damping properties of the damping element.

Advantageously, the first element is in the unloaded state of the midsole with its axial extent substantially outside the axial extent of the second element. This is to be understood that the piston-like second element is arranged in the unloaded state of the midsole axially outside of the cylinder-like first element. Only when loading the damping element in the loading direction then enters the "piston" in the "cylinder".

With the proposal according to the invention, it is possible to move away from known welding or bonding of the components of the shoe and to use a simpler way for the assembly of the shoe components.

It is also particularly advantageous that an interchangeability of the sole element is possible, so that the shoe can be adapted to desired (spring and damping) properties if necessary. In the drawing embodiment of the invention are shown. Show it:

1 schematically shows a shoe, viewed from the side,

2, the magnification "Z" of FIG. 1,

3 shows the section A-B of FIG. 2,

Fig. 4 shows the underside of the carrier or inner part of the shoe in a perspective view and

Fig. 5 shows a part of a formed as a grid structure carrier or inner part of the shoe in a perspective view.

In Fig. 1, a shoe, namely a sports shoe, shown only very schematically. The shoe has in a known manner a shoe upper 1, which is connected to a sole 2.

The sole 2 is designed so that it expands in the front sole region 14 over a certain areal extent. In the rear sole region 15, it also expands over a defined areal extent.

The structure of the sole 2 is shown in more detail in FIG. 2. The sole 2 consists of two (sole) parts, namely a carrier or inner part 3 and a sole element 4. The carrier or inner part 3 may be an insole, an insole, a Strobelsohle or directly to stem material, which forms the connection between the shoe upper 1 and the sole part 4. A preferred embodiment provides that the support or inner part 3 as a plastic injection molded part (preferably made of EVA) and is cup-shaped.

The carrier or inner part 3 is connected to the shoe upper 1. The connection can be produced, for example, by an injection molding process, in that the plastic material forming the carrier or inner part 3 is injection-molded onto the upper part 1, which consists, for example, of textile material. Similarly, a bonding of shoe upper 1 and carrier and inner part 3 is possible.

The sole element 4 consists of a plurality of damping elements, which are constructed in the manner of a piston-cylinder system. At the end remote from the support or inner part 3 of the sole part 4, an outsole 12 is arranged, which consists of one of the number of damping elements corresponding number outsole segments.

It should be noted that it is not necessary that the entire sole be constructed as explained. For example, only the front sole region 14 can be configured as described, while the rear sole region 15 can be formed in a previously known manner.

In the exemplary embodiments, the outsole 12 is formed segmented, wherein the damping element forms exclusively a midsole. However, it may also be provided that the outsole 12 is attached as a large-scale element at the axial end of the piston-cylinder systems. Likewise, the sketched damping element can be integrated into a classic midsole, as it is known as such in the prior art (see, for example, EP 0 387 505 A1). The exact structure of the sole 2 is shown for the embodiment with segmented outsole 12 from the synopsis of Figures 2 and 3.

The individual damping elements which form the midsole are in the exemplary embodiment - viewed in the loading direction R of the sole 2 - formed with a hexagonal basic shape in the manner of a honeycomb pattern (see Fig. 2).

Each damping element has a first element 9, which extends over a defined height H and forms a receiving space 10. Via a web-shaped connecting section 13, the end of the first element 9 facing away from the carrier or inner part 3 is connected to a second element 11 which has a shape corresponding to the shape of the first element 9 - viewed in the direction R -, d. H. Also, the second elements 11 have a hexagonal shape in the exemplary embodiment. The second element 11 extends over a height h, which does not have to be equal to the height H.

As can be seen from FIG. 3, an aspect which is essential to the invention is that a form-locking connection 5 is provided between the carrier or inner part 3 and the sole element 4. In the exemplary embodiment according to FIG. 3, the form-locking connection 5 is formed by hexagonal (honeycomb-shaped) web-like projections 7 which extend vertically out of the sole plane 6 in the vertical direction V over a certain height L. In general, a height L between 20% and 80% of the height H is provided for shoes according to the invention, more preferably a value between 25% and 75% of the height H. The first element 9, which - as explained - are also hexagonal in the embodiment, represent a congruent shape to the projections 7, ie they form a Recess 8, which corresponds to the shape of the projections 7. In this case, a small oversize is provided, so that upon compression in the vertical direction V of carrier or inner part 3 on the one hand and sole element 4 on the other hand, the projections 7 in the recess 8 and ensure a slight hold by projection 7 and recess 8 for a firm grip.

As can be seen from Fig. 3, the dimensions - the width of the first element 9 and the width of the second element 11 - are chosen so that the second element 1 1 can enter under loading of the damping element in the loading direction R in the Aumahmeraum 10, the is formed by the first element 9. The first element 9 and the second element 11 thus operate in the manner of a telescopic damper, wherein the first element 9 acts as a "cylinder", in which the second element 11 can enter in the manner of a "piston".

At the end facing away from the carrier or inner part 3 of the second element 11, an outsole segment 12 is attached, for. B. glued or molded directly, which consists for example of abrasion-resistant plastic material. Also, in the direction of R, the outsole segment 12 has a shape corresponding to that of the second element 11, but this need not necessarily be the case.

If a force in the direction R is applied to the outsole segment 12, as occurs when the shoe hits the ground, in particular the elastic connection section 13, which forms the exclusive connection between the first and the second element 9, 11, is deformed, such that As explained, the second element 11 enters the impression chamber 10 of the first element 9 in the manner of a piston. In order to positively influence the jounce behavior, the space enclosed by the first element 9, the connecting section 13 and the second element 11 may be made gas-tight. For this purpose, the support or inner part 3 with its projections 7 in cooperation with the recesses 8 must also be made gas-tight.

This is in any case ensured when the sole element 4 is glued to the carrier or inner part 3, in which case, of course, a change of the sole element 4 is no longer possible.

If gas-tightness is not desired, for example, the carrier or inner part 3 can be provided with recesses.

It can also be provided that the sole element 4 cooperates with the carrier or inner part 3 by snap connection or by clip connections. Here, what is not shown is an elastically prestressed undercut in the carrier or inner part 3 or in the sole element 4, which cooperates with a corresponding hook element in the respective other part.

In Fig. 4, the support or inner part 3 is shown in a perspective view, with a view of the underside of the part, which cooperates with the sole element 4. Evident is a number of web-like projections 7, which rise normally from the sole plane 6.

The shape and size of the projections 7 is adapted to the respective needs, with a hexagonal shape preferred, but by no means mandatory. It can also be provided that only in the Edge region of the plate-shaped base part of the support or inner part 3 projections 7 are provided, in contrast, only a projection-free contact surface for the sole element 4 is formed in the interior of the plate.

From Fig. 5 shows that the carrier or inner part 3 - in contrast to Fig. 4 - may also be formed only as a grid structure. In this case, the carrier or inner part 3 is formed by a network of grid elements 16, which may have any desired shape, wherein the web-shaped projections 7 can then rise from the grid structure. The grid is connected to the shoe upper 1 by a suitable process.

The exemplary embodiments are based on the fact that a sole element 4 is used in the manner of the "piston-cylinder damping elements" explained, but it is equally possible for simple honeycomb cells or round cells to be attached to the carrier or inner part 3 In this case, the degree of coverage of the sole surface can be selected as desired.

LIST OF REFERENCE NUMBERS

1 shoe upper

2 sole

3 carrier or inner part

4 sole element

5 positive connection

6 sole plane

7 lead

8 recess

9 first element

10 storage room

1 1 second element

12 outsole

13 elastic connecting portion

14 front sole area

15 rear sole area

16 grid element

V vertical direction

R loading direction

H height of the first element h height of the second element

L height of the projection

Claims

claims 1. shoe, in particular sports shoe, with a shoe upper (1) and a sole (2), wherein the sole (2) with the shoe upper (1) fixedly connected carrier or inner part (3) and one with the carrier or Inner part (3) has connected sole element (4), characterized, the sole element (4) is connected to the carrier or inner part (3) by means of a positive connection (5). 2. Shoe according to claim 1, characterized in that the positive connection (5) between the carrier or inner part (3) and the sole element (4) is detachably formed. 3. Shoe according to claim 2, characterized in that the positive connection (5) between the carrier or inner part (3) and the sole element (4) has a provided with at least one latching projection resiliently biased clip closure. 4. Shoe according to claim 1, characterized in that the positive connection (5) between the carrier or inner part (3) and the sole element (4) is formed insoluble. 5. Shoe according to claim 4, characterized in that the carrier or inner part (3) and the sole element (4) on the form-fitting Connection (5) are glued together. 6. Shoe according to one of claims 1 to 5, characterized in that the positive connection (5) arranged by at least one on the carrier or inner part (3) or on the sole element (4) and from the sole plane (6) in the vertical direction (V) extending projection (7) is formed, which engages in a form-congruent recess (8) in the sole element (4) or in the carrier or inner part (3). 7. Shoe according to claim 6, characterized in that the at least one projection (7) on the carrier or inner part (3) and the at least one recess (8) on the sole element (4) is arranged. 8. Shoe according to claim 6 or 7, characterized in that the projection (7) and the associated recess (8) in a section perpendicular to the vertical direction (V) has a polygonal, in particular a hexagonal shape. 9. Shoe according to one of claims 6 to 8, characterized in that a number of juxtaposed projections (7) and recesses (8) on the carrier or inner part (3) or on the Sole element (4) is arranged. 10. Shoe according to one of claims 6 to 9, characterized in that the carrier or inner part (3) is plate-shaped, wherein the upper side of the carrier or inner part (3) with the shoe upper (1) is connected and at least one Projection (7) from the bottom of the support or inner part (3) extends downwards. 1 1. Shoe according to one of claims 6 to 9, characterized in that the carrier or inner part (3) is at least partially formed as a lattice structure, wherein the upper side of the carrier or inner part (3) with the shoe upper (1) is connected and at least one projection (7) extends downwardly from the underside of the carrier or inner part (3). 12. Shoe according to one of claims 1 to 11, characterized in that a number of positive connection (5) between the carrier or inner part (3) and the sole element (4) only in a portion of the Sole (2) are arranged. 13. Shoe according to claim 12, characterized in that the positive connections (5) along the edge region of the sole (4) are arranged. 14. Shoe according to one of claims 1 to 13, characterized in that the sole element (4) is formed as a damping element at least over part of the bottom tread surface of the shoe having at least a first element (9), which is substantially in a load direction (R) in the unloaded state of the damping element over a predetermined height (H) and, formed as a hollow body, defined a receiving space (10) into which an associated second element (1 1), in cross section smaller dimensions than the first element (9) can penetrate at least partially, wherein the second element (1 1) extends substantially in the loading direction (R) in the unloaded state of the damping element over a predetermined height (h) and is arranged coaxially with the first element (9). 15. Shoe according to claim 14, characterized in that a number of juxtaposed first elements (9) are provided, each cooperating with a second element (11). 16. Shoe according to one of claims 14 or 15, characterized in that the shape of the first element (9) in a section perpendicular to the vertical direction (V) of that of the projection (7) or the Recess (8) corresponds. 17. Shoe according to one of claims 14 to 16, characterized in that the height of the first element (9) is greater than or equal to the height (L) of the projection (7) or the recess (8). 18. Shoe according to one of claims 14 to 17, characterized in that at least a part of the second elements (1 1) has a prism or cylinder shape, wherein the prism or the cylinder is at least partially formed as a solid part. 19. Shoe according to one of claims 14 to 18, characterized in that on the first element (9) facing away from the end of the second element (11), an outsole (12) is arranged. 20. Shoe according to claim 19, characterized in that the outsole (12) is formed by a number of individual sole parts, each sole part being arranged on a second element (11). 21. Shoe according to one of claims 14 to 20, characterized in that the two mutually associated elements (9, 1 1) via an elastic connecting portion (13) are interconnected, which is only between the first element (9) and the second Element (1 1) extends. 22. Shoe according to claim 21, characterized in that in each case a first element (9) and a second element (1 1) together with the connecting portion (13) and the carrier or inner part (3) form a gas-tight chamber. 23. Shoe according to one of claims 14 to 22, characterized in that the first element (9) and the second element (1 1) in a section perpendicular to the loading direction (R) have a mutually corresponding shape. 24. Shoe according to claim 23, characterized in that the first element (9) and the second element (11) in a section perpendicular to the loading direction (R) have a polygonal, in particular hexagonal, shape. 25. Shoe according to one of claims 14 to 24, characterized in that a plurality of first elements (9) are interconnected in their lateral region or their lateral boundary walls are each formed from a common portion. 26. Shoe according to one of claims 21 to 25, characterized in that the first element (9), the connecting portion (13) and the second element (1 1) are integrally formed.