DE9207288U1 - Shoe sole - Google Patents

Abstract

A shoe bottom (1) with a raised edge (2) has, in a horizontally aligned bearing surface (3), prefabricated seam holes (6), which run into it vertically, for an outwardly turned over seam edge (4) of a shaft (5). Running in the inner side of the edge (2) is a seam channel (7), from which a seam (8) connecting the shaft (5) to the shoe bottom (1) runs, through the seam holes (6) via the seam edge (4). <IMAGE>

Description

Description Shoe sole

The innovation concerns a shoe bottom with a raised edge, which has an at least approximately horizontally aligned support surface with prefabricated seam holes for an outwardly folded seam edge of a shaft.

A shoe bottom of the above type can be very easily connected to a shaft by hand by sewing and is described, for example, in US-A-4,308,671. In this case, a circumferential seam groove is arranged in the side surface of the shoe bottom, into which all the seam holes open. As a result, the seam runs in the seam groove in the side surface of the shoe bottom. This seam groove protects the seam part running there from mechanical damage. However, this protection is not complete. When running on terrain, it can happen that thorns or sharp stones, for example, get into the seam groove and destroy the seam. This causes the shaft to detach from the shoe bottom.

Apart from this functional disadvantage, the sporty-looking seam running along the side of the shoe sole is considered visually disadvantageous for various shoe designs.

The innovation is based on the problem of designing a shoe bottom of the type mentioned above in such a way that the seam connecting it to the shaft is as well protected as possible, without making the sewing of the shoe bottom to the shaft significantly more difficult.

This problem is solved in accordance with the innovation by designing the seam holes to create a seam that extends into the shoe sole.

This design means that the seam part that is present on the outside of comparable shoe bottoms runs inside the shoe bottom. This means that this seam part cannot be damaged or destroyed by mechanical influences from outside. The shoe bottom according to the innovation is therefore particularly well protected against mechanical damage. Furthermore, the internal seam grooves provide improved protection against the ingress of water. Apart from this, a shoe made with the shoe bottom according to the innovation has the advantageous appearance of a welted shoe. In particular, if the shoe bottom is intended for sandals or mules, the seam line provided inside the shoe does not cause any additional difficulties when sewing the shaft to the shoe bottom. The shoe bottom according to the innovation can be sewn to a shaft by hand or by machine.

The shaft can be connected to the shoe sole particularly quickly and easily if, according to an advantageous further development of the innovation, the seam holes open into a seam groove provided in the edge of the shoe sole. This seam groove in the inside of the shoe sole can be covered by an insole.

From a manufacturing point of view, it is advantageous if the seam holes are blind holes that lead at least approximately vertically into the support surface. Such seam holes can be produced in one step when producing the shoe bottom using the injection molding process, without causing problems when demolding the shoe bottom.

or the shape has to be elaborately designed because of the seam holes.

If you do not want the seam holes to end in a seam groove, you can make it easier to hit the seam holes with the sewing needle from the inside of the shoe bottom when sewing the shaft to the shoe bottom by placing markings on the inside of the edge that indicate the position of the individual seam holes.

The innovation allows for numerous embodiments. To further clarify its basic principle, two of them are shown in the drawing and are described below. This shows in

Fig.l a section through an edge area of a shoe with the shoe bottom according to the innovation,

Fig.2 a section through an edge region of a second embodiment of a shoe bottom.

Figure 1 shows part of a shoe bottom 1 made of plastic, usually polyurethane. This shoe bottom 1 has a raised edge 2 with a horizontal support surface 3 for an outwardly folded seam edge 4 of a shaft 5.

Prefabricated seam holes 6 lead into the support surface 3 from above, all of which open into a seam groove 7 provided on the inside of the edge 2 of the shoe bottom 1.

This design makes it possible to create a seam 8 using a curved sewing needle from the inside of the shoe, so that the seam 8 does not run along the outside of the shoe bottom 1 and is therefore well protected against mechanical damage.

In the embodiment according to Figure 2, the prefabricated seam holes 6 are designed as blind holes. The seam groove 7 is not so deep that the seam holes 6 open into it. Therefore, when sewing the shaft to the shoe bottom 1, it is necessary to pierce the wall of the shoe bottom 1 between the seam groove 7 and the seam holes 6. In order to always hit a seam hole 6 exactly, markings 9 in the form of notches or projections are provided in the seam groove 7.

List of reference symbols used

1 shoe bottom

2 Edge

3 Support surface

4 Seam edge

5 shaft

6 stitching holes

7 Seam groove

8 Seam

9 Marking

Claims (4)

Protection claims 1. Shoe bottom with a raised edge, which has an at least approximately horizontally aligned support surface with prefabricated seam holes for an outwardly folded seam edge of a shaft, characterized in that the seam holes (6) are designed to produce a seam (8) leading into the shoe bottom (1). 2. Shoe bottom according to claim 1, characterized in that the seam holes (6) open into a seam groove (7) provided inside the shoe bottom (1) in its edge (2). 3. Shoe bottom according to claim 1, characterized in that the seam holes (6) are blind holes leading at least approximately vertically into the support surface (3). 4. Shoe bottom according to claim 3, characterized in that markings (9) identifying the position of the individual seam holes (6) are arranged in the inside of the edge (2).