EP3352609B1 - Shoe, particularly sport shoe - Google Patents

Description

The invention relates to a shoe, in particular a sports shoe, which has a sole, which is connected to a shoe upper, according to the preamble of claim 1.

Generic shoes are well known in the art. There is a demand that the sports shoe - especially if it is used as a sports shoe - as well as possible to adapt to individual needs; This applies in particular with regard to the spring and damping behavior of the shoe. See eg DE 20 2005 012 062 U1 ,

The shoe should further have as constant as possible and unchangeable properties over time during its use.

Another aspect that is increasingly important is that of recycling. Here it is desirable to build a generic shoe so that it can be disposed of sorted again.

The invention has the object of providing a shoe of the type mentioned in such a way that it can be adapted to individual requirements in a simple and thus cost-effective manner. Furthermore, the disposal of the shoe should be possible in a simple manner.

The solution of this problem by the invention is defined by the characterizing features of claim 1.

The first plug and the inner diameter of the hollow cylindrical portion of the first damping element are preferably tolerated to each other so that in the assembled state of the first plug and the hollow cylindrical section are arranged with press fit to each other; Accordingly, the second plug and the inner diameter of the hollow cylindrical portion of the second damping element are preferably tolerated to each other so that in the assembled state of the second plug and the hollow cylindrical portion are arranged with a press fit to each other.

The first sole portion may be surrounded by a laterally upwardly extending edge. This gives the first sole part a cup-shaped structure.

The second sole portion may have such an extent as to cover the rear sole area and leave the front sole area exposed. The connecting part can have plug connections only in the region which is covered by the second sole part. Furthermore, it can be provided in this case that the connecting part has in the region which is not covered by the second sole part, at least one newly formed footrest.

The first damping elements are preferably made of two partial hollow bodies, which are connected to one another via a substantially perpendicular to the loading direction extending connecting portion, wherein a partial hollow body is formed by the hollow cylindrical portion in the upper region of the damping element. In this case, it is preferably provided that the outer dimensions of the upper part-hollow body are smaller than the outer dimensions of the lower part-hollow body.

Similarly, the second damping elements may consist of two partial hollow bodies, which are connected to each other via a substantially perpendicular to the loading direction extending connecting portion, wherein a partial hollow body is formed by the hollow cylindrical portion in the lower region of the damping element. It can be provided that the outer dimensions of the lower part-hollow body are smaller than the outer dimensions of the upper part-hollow body.

The connectors of the connecting part are preferably connected to one another with a number of rod-shaped or web-shaped connecting struts. In particular, in this case two adjacent plug-in connections of the connecting part are each connected to each other with a connecting strut.

The first sole part including all damping elements, the second sole part including all damping elements and the connecting part with all connectors are preferably each formed as one-piece moldings. The material is mostly plastic.

The shoe upper is preferably connected to the first sole part. This results in improved kinematics when compressing the shoe due to the weight of the wearer of the shoe.

The shoe upper may be connected in accordance with a preferred embodiment of the invention with the sole via a positive connection.

According to another embodiment of the invention, the shaft, ie the shoe upper, of the shoe and its sole are sewn together.

An essential design feature of the proposed solution is, however, the structure of the sole and especially their damping layer, which consists, at least in the heel area, ie in the rear sole area, of two specific layers of damping elements, as shown in the WO 03/092423 A1 are described and to which reference is expressly made. In this case, two superimposed layers of said damping elements are connected to each other by a connecting part with a grid-like structure via a plug connection. The cohesion of the individual components of the sole is preferably carried out exclusively by friction; An adhesive is preferably not used for this purpose.

The lower damping element is designed in the manner of a cage, d. H. it preferably has a cup-shaped configuration. The upper damping element is preferably wedge-shaped and lies on the lower damping element. Both damping elements, so the upper and the lower layer are connected to each other via the connecting part with a lattice-shaped structure with a number of opposing, axially aligned pin (first and second connector).

The connecting part, ie the grid layer, extends mostly over the entire area of the midsole, wherein the upwards (towards the foot of the wearer) directed pins are present only in the area of the heel wedge in the rear (and middle) sole area. In the front sole region (forefoot region), the connecting part closes off the piston-cylinder-shaped structure of the second damping elements towards the bottom, which is preferably carried out by, for example, a plate-shaped widening of the lattice base over each of the lower first damping elements. As a result, the support surface is increased for the foot or for a supplementary insole provided and thus improves the pressure distribution.

The damping properties of the sole structure can be adjusted for example via different materials or hardnesses of the individual components. Preference is given to a plastic having a hardness range between 60 and 95 Shore A.

The advantage of the proposed sole structure is first that the upper, second sole part is interchangeable, which results in the possibility to make said part individually customizable.

It is also advantageous that the sole parts used in general have a very good durability and thus have a low tendency to permanent deformation.

Furthermore, it is very advantageous that no gluing of components is necessary.

Finally, it is advantageous in terms of recycling that a (at least partially) sorted separation of the individual components is possible.

Possible is the use of a shoe upper both with and without Strobelsohle.

In a shoe upper with Strobelsohle a plugged connection between the shaft (shoe upper) and sole is provided, ie the sole is neither glued to the shaft nor sewn and can be separated at any time from the shaft. The basis for this is the principle of the first mentioned above and second sole part, which are connected by the connecting part via a plug connection.

The first sole part with the first damping elements preferably consists of the running surface and a fully or partially over the sole extending integrated layer of said first damping elements.

In this case, the shank (that is to say the upper part of the shoe) preferably has recesses (holes) in the insole area, which correspond in terms of their distribution and position to the plugs (pins) of the connector of the connecting part. The connecting part is inserted and positioned from above into the shaft so that the plugs (pins) coincide with the recesses. From below (below the shaft), the corresponding position of the damping elements is connected by the recesses with the plugs, d. H. pressed. The shaft is then clamped between the connecting part and the first sole part. The second sole part is then inserted from above into the shaft and attached to the connecting part.

The connecting part can also be provided as a replacement for a strobe sole. This embodiment is similar to that explained above, with the difference that the shaft has no Stohlselohle with recesses (holes), but the Strobelsohle is replaced by the connecting part (grid). The connecting part with the corresponding plugs in this case has an additional base (preferably made of a softer plastic material having a hardness in the range between 65 and 90 Shore A, made of leather, synthetic leather or textile material), which the fills open grid interstices and forms the sub-step for sewing the shaft.

This "grid Strobelsohle" is sewn to the - open at the bottom - shaft. The first and the second damping element are attached from below or from the inside.

In general, an outsole can be arranged on the underside of the first damping element and especially on the underside of its bottom plate.

Fig. 1

in der Seitenansicht einen Sportschuh,

Fig. 2

in Explosionsdarstellung die Sohle des Sportschuhs gemäß Figur 1 und

Fig. 3

einen Teil der Seitenansicht in geschnittener Darstellung.

In the drawing, an embodiment of the invention is shown. Show it:

Fig. 1

in the side view a sports shoe,

Fig. 2

in exploded view, the sole of the sports shoe according to FIG. 1 and

Fig. 3

a part of the side view in a sectional view.

In FIG. 1 a shoe 1 in the form of a sports shoe is indicated, which has a shoe upper 3 and a sole 2. The shoe 1 is when used properly on the floor and is loaded by the foot of the wearer. This results in a loading direction R, which corresponds to the vertical direction. In FIG. 1 a back sole region 17 and a front sole region 18 are marked, each extending over approximately one third of the total length of the shoe 1; in between there is a middle sole area, which is not specified.

From the Figures 2 and 3 the structure according to the invention of the sole 2 is shown in detail:
The sole has a first, lower sole part 4 and a second, upper sole part 8. Both sole parts 4, 8 are connected to each other via a connecting part 12, in the manner of a connector and without the use of an adhesive. As in FIG. 2 can be seen, the first sole part 4 has a circumferentially circumferential edge 16, so that this part is formed like a shell.

On the underside of the first sole part 4, an outsole 23 is arranged. Both the first sole part 4 and the second sole part 8 comprise respective first damping elements 6 and second damping elements 10. The first damping elements 6 of the first sole part 4 extend upwards from a bottom plate 5 of the first sole part 4, while the second damping elements 10 of FIG second sole part 8 extending from a cover plate 9 down.

Both the first damping elements 6 and the second damping elements 10 are formed in the manner of a piston-cylinder damping system. Hereinafter, it is provided that a hollow portion of the damping element with smaller outer dimensions ("piston") enters a hollow body-shaped area with larger outer dimensions ("cylinder") and thus develops a damping effect.

To design this type of damping elements is on the WO 03/092423 A1 expressly referred to.

It should be noted that the first damping element 6 and the second damping element 10 are formed in the manner of a piston-cylinder unit, wherein a connecting portion 20 and 21, the connection between the "piston" and the "cylinder" produces.

Accordingly, the first damping element 6 has a hollow cylindrical section 7 in its upper region, while the second damping element 10 has a hollow cylindrical section 11 in its lower region.

The lower first damping element 6 is connected to the upper second damping element 10 via a plug connection, which is accomplished via the connecting part 12. For this purpose, the connecting part 12 has a number of plug connections 13 which have first plug 14 and second plug 15 aligned in the loading direction R.

The second sole element 8 in this case has an extension which essentially covers only the rear sole region 17 and possibly also the middle sole region; however, the front sole region remains free of the second sole element.

Out FIG. 2 shows that the second sole element 8 is so far wedge-shaped and the underlying connection part 12 is not completely covered.

Thus, for the support of the foot still a good pressure distribution is ensured, therefore, the connecting part 12 has in its area in the front sole region 18 is arranged, a common, plate-shaped footrest 19th

The connecting part 12 consists of individual connectors 13 with respective lower first connectors 14 and upper second connectors 15, wherein the individual connectors 13 are connected to each other via connecting struts 22. Therefore, for the connection part 12, a lattice-shaped structure that can be assembled as a whole results.

Thus, the proposed concept is based on the fact that two layers of piston-cylinder-like damping elements one above the other, d. H. are arranged in series, wherein the connection of these superimposed damping elements is accomplished via the connecting part 12.

Here, only a compound is provided by friction and without adhesive. Rather, there is a mating of the first and the second sole member by means of the connecting part.

If the shoe upper is arranged directly on the first sole part, this has the advantage that compression movements of the shoe result in a reduced relative movement between the shoe upper and the foot.

In general, the connection of the shoe upper 3 with the sole 2 can take place in different ways:
The shoe upper 3 can be made as a closed (sock-like) structure running around the sole of the wearer, for example, the lower end being realized by a buff sole which is sewn to the shoe upper. In the Strobelsohle can openings (Punchings) may be introduced, which correspond to the arrangement of the plug (ie the hole pattern) of the connecting part 12. During assembly of the sole 2, the shoe upper prepared in this way is then placed between the individual sole parts such that the push-button sole and thus also the shoe upper 3 are connected in a form-fitting manner to the sole 2.

It can also be provided that during the injection molding process of one of the sole parts, a textile material section is inserted into the injection mold, wherein said material section forms the storm sole or a part of the shoe upper 3. Thus, there is then a fixed connection produced by the injection molding process between one of the sole parts and the textile material section and thus a connection between the sole 2 and the shoe upper 3 after the sole 2 has been mounted. The sole part can in particular be the connecting part 12 or the second sole part 8 be.

When injecting the sole part in the mentioned type can also be provided that the textile material is previously provided with a corresponding perforation corresponding to the hole pattern of the pin and so inserted into the injection mold.

As a variation of this concept, it can be further provided that said textile material section, which forms the strobe sole, virtually acts as a carrier material, which is inserted into the injection mold and then only the grid structure applied by the injection molding process, which is used for producing the described Plug connection is needed. For this purpose, in particular the second sole member 8 is considered.

If the second sole part 8 is provided with the textile material section according to the described type, the use of an insole can advantageously be dispensed with in the given case, since this function is then perceived by the strobel sole thus produced. The part thus produced is thus used as a strobe sole and has the connectors for the sole described.

Advantageously, results in a very flexible and lightweight composite that is easy to sew.

Preferably can then be dispensed with a peripheral edge 16 on the first sole part 4.

It can also be provided that Schnürbandagen are part of the inserted into the injection molding textile material section.

With appropriate training can be achieved advantageously that in turn creates a flexible and lightweight structure that is easy to customize. The plastic lattice base of the sole is clearly defined, clean and well sealed. Furthermore, reinforcements (for example a heel cap) can be integrated in a simple manner.

It can also be provided that the variants described above are used in combination in that they are used in each case only in a specific region of the sole (that is, for example, in the forefoot, midfoot or hindfoot region). Thus, for example, the grid required for the connector can be molded directly to the Strobelsohle only in the forefoot area, while in the joint (ie midfoot) area and heel area this is not the case; here would be the connection of the shoe upper with the sole then as a pure plug connection done (by means of the mentioned hole pattern in the Strobelsohle).

The advantage of this variant is that there are no plastic surfaces in the shoe and no damping movement in the shoe occurs. Furthermore, the assembly of the shoe or the sole is very simple.

As a further variation of the described concept it can be provided that while largely dispensing with an edge 16 on or in the first sole part 4, however, edge portions of the type of edge 16 are provided (only) in the region of the sole tip and in the region of the heel of the sole become.

Preferably, the individual parts of the sole are made of polyolefin elastomers (eg TPE-S, TPU or PA).

As a shoe upper, a knitted material can also be provided.

LIST OF REFERENCE NUMBERS

1

shoe

2

sole

3

Shoeupper

4

first sole part

5

baseplate

6

first damping element

7

hollow cylindrical section

8th

second sole part

9

cover plate

10

second damping element

11

hollow cylindrical section

12

connecting part

13

connector

14

first plug

15

second plug

16

edge

17

back sole area

18

front sole area

19

footrest

20

connecting portion

21

connecting portion

22

connecting strut

23

outsole

R

load direction

Claims (15)

1. Shoe (1), especially sports shoe, which comprises a sole (2) which is connected with a shoe upper part (3), wherein the sole (2) comprises:

   - a first sole part (4) which comprises a ground plate (5), wherein a plurality of first damping elements (6) which extend in a direction of loading (R) are integrally shaped at the ground plate (5), wherein the first damping elements (6) are formed as hollow bodies and comprise a hollow-cylindrical section (7) in its upper end region;

   - a second sole part (8) which comprises a cover plate (9), wherein a plurality of second damping elements (10) which extend in the direction of loading (R) are integrally shaped at the cover plate (9), wherein the second damping elements (10) are formed as hollow bodies and comprise a hollow-cylindrical section (11) in its lower end region,

   characterized in
   that the sole (2) comprises: a connection part (12) which comprises a plurality of plug-in connections (13) which are connected with another, wherein each plug-in connection (13) comprise a first plug connector (14) which extends downwards in the direction of loading (R) and a second plug connector (15) which extends upwards in the direction of loading (R), wherein the first plug connection (14) is designed for frictionally engaging into the hollow-cylindrical section (7) of the first damping element (6) and wherein the second plug connection (15) is designed for frictionally engaging into the hollow-cylindrical section (11) of the second damping element (10).
2. Shoe according to claim 1, characterized in that the first plug connector (14) and the inner diameter of the hollow-cylindrical section (7) of the first damping element (6) are tolerated to another in such a manner that in the mounted state the first plug connector (14) and the hollow-cylindrical section (7) are arranged to another with press fit and that the second plug connector (15) and the inner diameter of the hollow-cylindrical section (11) of the second damping element (10) are tolerated to another in such a manner that in the mounted state the second plug connector (15) and the hollow-cylindrical section (11) are arranged to another with press fit.
3. Shoe according to claim 1 or 2, characterized in that the first sole part (4) is surrounded by an edge (16) which extends laterally upwards.
4. Shoe according to one of claims 1 to 3, characterized in that the second sole part (8) has such an extension that it covers the rear sole region (17) and leaves the front sole region (18) uncovered.
5. Shoe according to claim 4, characterized in that the connection part (12) comprises plug-in connections (13) only in that region which is covered by the second sole part (8).
6. Shoe according to claim 5, characterized in that the connection part (12) comprises at least one flat footrest (19) in that region which is not covered by the second sole part (8).
7. Shoe according to one of claims 1 to 6, characterized in that the first damping elements (6) consist of two partial hollow bodies which are connected with another by a connection section (20) which extends substantially perpendicular to the direction of loading (R), wherein one of the partial hollow bodies is formed by the hollow-cylindrical section (7) in the upper region of the damping element (6).
8. Shoe according to claim 7, characterized in that the outer dimension of the upper partial hollow body (7) is smaller than the outer dimension of the bottom partial hollow body.
9. Shoe according to one of claims 1 to 8, characterized in that the second damping elements (10) consist of two partial hollow bodies which are connected with another by a connection section (21) which extends substantially perpendicular to the direction of loading (R), wherein one of the partial hollow bodies is formed by the hollow-cylindrical section (11) in the bottom region of the damping element (10).
10. Shoe according to claim 9, characterized in that the outer dimension of the bottom partial hollow body (11) is smaller than the outer dimension of the upper partial hollow body.
11. Shoe according to one of claims 1 to 10, characterized in that the plug-in connections (13) of the connection part (12) are connected with another by a plurality of bar-shaped or rod-shaped connection rods (22).
12. Shoe according to claim 11, characterized in that two adjacent plug-in connections (13) of the connection part (12) are connected with each one connection rod (22).
13. Shoe according to one of claims 1 to 12, characterized in that the first sole part (4) including all damping elements (6), that the second sole part (8) including all damping elements (10) and that the connection part (12) including all plug-in connections (13) are each designed as one-piece formed parts.
14. Shoe according to one of claims 1 to 13, characterized in that the shoe upper part (3) is connected with the first sole part (4).
15. Shoe according to one of claims 1 to 14, characterized in that the shoe upper part (3) is connected with the sole (2) by means of a form-fit connection.

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