EP2343997B1 - Anti-skid device for shoes - Google Patents

Description

To reduce the risk of slipping when running on solid or loose snow, it is out of the DE 83 22 966 U1 known to use anti-skid devices. The anti-slip devices are striped over the shoes and consist of a rubber ring from which individual tabs go out. On the tabs are interconnected circular link chains attached as antislip, similar to that known from snow chains in motor vehicles. The chain links of the round link chains are relatively small. They have a length of approx. 15 mm with a wire diameter of approx. 2.5 mm.

Although these anti-slip devices are well suited for loose and firm snow, the use is limited to ice. In particular, the running comfort is significantly impaired by the strands of running under the shoe round link chains.

Furthermore, it is from the DE 816,068 Known to reduce the sliding properties of shoes on ice by a footlet is slipped over the shoe. The footlet consists of a fabric. At the upper edge of the footlet is provided with reinforced edges to which a locking device is attached.

The footbed fabric is identical on both the upper and the sole. The threads of the fabric are metal.

The traction properties of such antiskid device can be improved.

The DE 34 46 072 A1 describes a streaky or stain-shaped anti-slip element with a carrier which is provided on both sides with a granular or granular structure. The carrier can be attached to the shoe by means of straps.

The features of the preamble of claims 1 and 2 are made US 5,315,768 A known.

Based on this, it is an object of the invention to provide an anti-slip device for shoes, which is characterized by improved ride comfort on ice and solid snow.

This object is achieved by a non-skid device with the features of claim 1 or an antiskid device with the features of claim 2.

In the anti-skid device according to the invention a securing or fixing device is provided to secure the anti-skid device to the shoe. At the fixing a textile piece is attached. This textile piece is a fabric in which the weft or the warp threads consist of a Umwindegarn.

According to the other solution, the textile piece is a fabric which is designed as a leno fabric. In both cases, small elevations arise, which have the property of pushing into the ice surface, as the local pressure is high enough to provide sufficient freezing point depression. The filaments of the carrier chain or the Umwindegarns thus ensure a certain positive connection between the anti-skid device and the ice surface.

Since these structures are very small, they do not affect the ride comfort.

Due to the nature of the fabric, namely some relatively thick filaments in the carrier chain or as a carrier for the Umwindefilamente comes on solid snow a good grip. This is achieved in particular when, for example, the threads which are connected to the carrier chain are comparatively larger in diameter than the threads of the carrier chain which is not directly connected to the leno chain. The same can be achieved if the carrier threads in Umwindegarn are comparatively thick compared with the diameter of those threads in the fabric that do not wear Umwindefaden. In both cases, two types of macrostructures arise, namely a very fine macrostructure by the leno threads or the umbilicus, which can sink into the ice, and a coarser structure, which does not sink into the ice, but gives a good grip on snow.

On the other hand, the structure that improves the grip on snow, so fine that this structure can not clog with snow.

A rational production of the anti-skid device results when the textile piece is chosen so large that it covers the entire sole including the heel of the shoe. This saves additional seams.

If an increased flexibility of the anti-skid device is in the foreground, it is expedient if another textile piece is provided which, together with the other textile piece, covers at least a large part of the entire sole including the heel of the shoe. These textile pieces can then be adapted to the respective application area on the shoe sole.

The anti-slip device is very easy to put on when the textile piece or the textile pieces are formed together into a pocket which, in use, reaches as far as the shoe upper.

The Umwindegarn can be composed of a monofilament or a multifilament yarn as a soul and a helical, around it running Umwindefaden.

The core may have a hardness corresponding to an E-modulus of 3,000 N / mm ² at preferably 250-700 cN / tex, and preferably at most an E-modulus of about 1,800 cN / tex, preferably an E-modulus of 1,000 cN / tex.

The wrapping thread has a hardness of at least 3,000 N / mm ^2, preferably about 250-700 cN / tex as far as thermoplastic materials are concerned.

A very good hold is achieved when the wrapping thread is made of stainless steel.

The Umwindefäden can form in the fabric both the Kettals and the weft threads. Preferably, the Umwindefäden form the weft.

The threads of the carrier chain, which are connected to the leno fabric with threads of the leno chain or the soul of the Umwindegarns, expediently has a diameter between 0.2 mm and 1 mm, preferably by 0.5 mm.

The diameter of the Umwindefäden or the threads of the leno warp is between 0.05 mm and 1 mm, preferably by 0.1 mm.

A preferred material for the fabric may be polyester.

In order to obtain the correspondingly small number of contact points, so that the desired sinking into the ice surface is possible, adjacent threads of Umwindegarn are separated from each other by running parallel threads in the textile piece, which are not designed as Umwindegarn.

The design looks similar in the case of a leno fabric. Here are adjacent threads of the carrier chain, which are crossed by threads of the leno chain separated by threads, which are not crossed by threads of the leno chain.

In order to connect the textile piece with the fixing device, loops are provided on its free edge, at least in sections, or there is a tubular Umbug present.

The loops or the tubular Umbug can be used to receive a rubber-elastic element with which the anti-skid device is stretched on the shoe.

Good anti-slip properties are achieved when the threads of the textile piece, which are formed by Umwindegarn, transverse to the shoe longitudinal direction.

In a textile piece of leno fabric, the filaments of the carrier chain may substantially have a hardness corresponding to an E-modulus of 3,000 N / mm ^2, preferably from about 250-700 cN / tex at most an E modulus of 1,800 cN / tex, wherein the range ends at an E-modulus of about 1,000 cN / tex.

The leno warp can have at least a hardness corresponding to an modulus of elasticity of 3,000 N / mm ^2, preferably about 250-700 cN / tex, if it is thermoplastic material.

In order to get a good projection of the threads of the carrier chain on the contact side to the ice, those threads of the carrier chain, which are crossed by threads of the leno chain, can be executed as monofilaments.

Incidentally, developments of the invention are the subject of subclaims.

The following description of the figures explains aspects for understanding the invention. Further details not described, the expert can refer to the drawings in the usual way, which supplement the description of the figures so far. It is clear that a number of modifications are possible.

The following drawings are not necessarily to scale. To illustrate the essential details It may be that certain areas are exaggerated. In addition, the drawings are strikingly simplified and do not contain any detail that may be present in the practice. The terms "top" and "bottom" refer to the normal position of use of the anti-skid device on the shoe.

Fig. 1

zeigt einen Schuh mit angelegter Gleitschutzvorrichtung.

Fig. 2

zeigt einen Ausschnitt aus dem Drehergewebe der Gleitschutzvorrichtung nach Fig. 1.

Fig. 3

zeigt einen Ausschnitt aus dem Gewebe mit Umwindegarn der Gleitschutzvorrichtung nach Fig. 1.

Fig. 4

zeigt einen Schuh mit einer anderen Ausführungsform der Gleitschutzvorrichtung.

In the drawings, embodiments of the subject matter of the invention are shown.

Fig. 1

shows a shoe with anti-slip device.

Fig. 2

shows a section of the leno fabric of the anti-skid device according to Fig. 1 ,

Fig. 3

shows a section of the fabric with Umwindegarn the anti-skid device after Fig. 1 ,

Fig. 4

shows a shoe with another embodiment of the anti-skid device.

Fig. 1 shows a boot-like shoe 1, on which an anti-skid device 2 is mounted. The shoe has a shaft 3, on which a hidden by the anti-skid device 2 sole is fixed with heel. The anti-skid device 2 is designed similar to a footlet.

To the anti-skid device 2 includes a bag or bag-shaped textile piece 4 as antislip agent, which is provided at the free edge with a tubular Umbug 5. Within the Umbugs 5 is an endless Rubber cord 6, as indicated by dashed lines. The rubber cord 6 forms a fixing device with the fold 5 in order to prevent the actual anti-slip agent of the device from detaching from the shoe 1 during use.

The antislip means 4 of the antiskid device 2 in one embodiment consists of a fabric, as shown in detail in FIG FIG. 2 is shown. The fabric is designed as a so-called leno fabric. It contains weft threads 9 and several types of warp threads 11, 12 and 13. The warp threads 11 are multifilament threads, which are woven in the usual and known manner with the weft threads 9.

The warp threads 12 are preferably monofilament threads with a diameter between 0.1 mm and 4 mm. They lie parallel to each other on the same side of the weft threads 9. They form together with the threads 11, the carrier chain.

The warp threads 13 form the leno warp and consist of a stainless steel wire with a diameter between 0.05 mm and 1 mm. In order that the leno threads 13 can not be pressed into the warp threads during use, the warp threads 12 have a strength of between 250 and 700 cN / tex.

The leno fabric is constructed so that the leno threads 13, as the figure can be seen, between adjacent weft threads 9, the warp threads 12 intersect and the weft threads, based on FIG. 2 From the bottom (street side) ago, pull against the warp threads 12 or tie.

The weft threads 12 and 11 together form the so-called carrier chain, while the threads 13, the leno chain form.

FIG. 2 shows the section of the tissue, which represents the fixing means 4, with a view of the side of the fabric, which makes the contact with the substrate or the snow or ice in the proper use of the anti-skid device.

As can be seen, the leno threads 13 are clearly over and thus form small elevations on the contact side of the antislip. The theory of action assumes that in use, these elevations sink into the ice surface, because the freezing point depression occurs due to the increased pressure at the contact points. After sinking creates a certain positive connection between these contact points, formed by the leno threads 13 and the ice surface, resulting in the desired anti-skid.

In order to achieve the anti-slip, therefore, the number of contact points must not be too large, because otherwise the desired freezing point depression at the contact point no longer takes place and the intended positive connection fails. For this reason, the threads of the carrier chain, which are wrapped by the threads of the leno chain quasi-zigzag-shaped, relatively far apart, at least far from each other FIG. 2 suggests. To achieve the distance between the threads of the carrier chain with leno thread, between these threads with leno warp, warp threads 11 are inserted, which fit into the fabric. They are not appreciably present on the contact side of the antislip agent because they are cuddly multifilament yarns.

The fabric 2 shown overall forms the pocket or bag-shaped part, which serves as anti-slip agent of the anti-skid device.

FIG. 2 Further, it can be seen that the warp yarns 12 of the carrier chain are relatively stiff and thus rise above the surface defined by the weft yarns. Since the threads 12 have a comparatively large diameter and are relatively far apart according to the number of contact points through the leno warp, an additional coarser pattern results, which leads to an improvement in traction on loose or firm snow. Snow is more malleable than ice, so that the protruding cylindrical warp threads 12 can sink in and provide an improved grip here. Accordingly, it is advantageous if the threads 12 extend transversely to the shoe longitudinal direction, that is, the weft threads are parallel to the sole longitudinal axis.

FIG. 3 shows a section of another type of fabric, which also as anti-slip agent for the anti-skid device according to FIG. 1 suitable. The fabric contains warp threads 14 of multifilaments and weft threads 15, also made of multifilaments. At a distance from each other, the fabric contains weft threads 16, which consist of Umwindegarn. The Umwindegarn 16 is composed of a soul or a core 17 in the form of a monofilament and a binding thread 18 together. The wrapping thread 18 is also a monofilament of stainless steel wire having a diameter range as stated above. The wrapping thread 18 runs around the core 17 as a helix.

Because the warp threads 14 and the remaining weft threads 15 Multifilamentfäden are, press these threads in the tissue relatively flat, while the Umwindegarn over the relevant page is clearly over. This in turn results in contact points with the binding thread in the same way as described above in connection with the threads 13 of the leno chain. On the other hand, the souls or cores 17 of the Umwindegarne 16 rise significantly above the textile surface and thus produce at a distance from each other raised ribs, such as the threads of the carrier chain. Thus, the Umwindegarne can also press in a snow surface and get caught, resulting in the desired slip resistance.

The Umwindegarn can be used as a warp, but this has manufacturing problems, because it is not easy to pass the provided with the elevations thread through the thread eye of the reed. Therefore, it is preferable to process the wraparound yarn as weft.

Instead of the described stainless steel wire for the binding thread 18 or the leno chain from the threads 13, a correspondingly strong polymer thread can also be used here. This thread should have a strength between 20 and 200 cN / tex.

As FIG. 4 shows, the anti-slip agent 4 can also be composed of three different sections together. The foot-like anti-slip agent 4 consists in the Fußspitzen- and ball area of a section 20, this is followed in the midfoot region in the longitudinal and transverse elastic textile section 21, with which in turn a section 22 is connected in the heel area. Sections 20 and 22 are fabrics made, for example, in accordance with Figures 2 and 3 are executed.

With the help of the elastic intermediate region 21, it is readily possible to cover a wide shoe size range, without causing excessive wrinkles in the region 20 and 22, or on the upper side of the shoe. In addition, the division into the two sections 20 and 22 allows the adaptation of the traction characteristics to the respective, preferred range. For example, area 22 can be optimized for good sliding friction properties and the bale or toe area for good static friction properties. The reverse variant is also possible, what is preferred in each case is to be determined empirically.

In a previously studied embodiment, the Umwindegarn 16 is located in the heel region transverse to the Fußlängserstreckung, while the Umwindegarn is aligned in the Fußspitzen- and ball area, ie in the section 20, parallel to the Fußlängsrichtung. As a result, increased sliding friction in the heel area and increased static friction in the toe area is achieved.

In the embodiment shown according to FIG. 1 The anti-skid device 2 completely envelopes the underside of the shoe including the shoe sole. Deviating from this embodiment, it is also possible to perform the anti-skid device as a band, in such a way that the tissue, as in the Figures 2 and 3 is shown as a band running under the toe and the free ends of the band are sewn, for example, with a rubber band. The anti-slip device would thus in the area of the toe be worn.

An anti-slip device for shoes is composed of a non-slip agent and a fixing device which serves to attach the anti-slip agent to the shoe. The antislip itself is a textile fabric which either contains Umwindegarne or is designed as a leno fabric. The Dreherkette consists of very fine monofilaments as well as the Umwindefäden the Umwindegarns.

Claims (15)

1. Anti-slip device (2) to be worn on shoes (1),
   with a connection means (5, 6), which is fitted to be connected to a shoe (1), and with an anti-slip element (4), which has at least one textile piece, which is fastened to the connection means (5, 6), characterised in that the textile piece contains a wrap yarn (16).
2. Anti-slip device (2) to be worn on shoes (1),
   with a connection means (5, 6), which is fitted to be connected to a shoe (1), and with an anti-slip element (4), which has at least one textile piece, which is fastened to the connection means (5, 6), characterised in that the textile piece is configured as a gauze fabric.
3. Anti-slip device according to claim 1 or 2, characterised in that it has a further textile piece (20, 21, 22), which together with the textile piece acting as anti-slip element covers at least a large portion of the entire sole including the heel of the shoe (2).
4. Anti-slip device according to claim 3, characterised in that the textile piece or the textile pieces (4) are shaped into a foot, which when in use extends as far as the shoe shaft (3).
5. Anti-slip device according to claim 1, characterised in that the wrap yarn (16) consists of amonofilament as core (17) and a wrap thread (18).
6. Anti-slip device according to claim 5, characterised in that the wrap thread (18) is made from special steel.
7. Anti-slip device according to claim 1 or 2, characterised in that the material for the textile piece (4) is polyester.
8. Anti-slip device according to claim 1, characterised in that adjacent threads of warp yarn (16) in the textile piece (4) are separated from one another by parallel running threads (15), which are not configured as wrap yarn.
9. Anti-slip device according to claim 2, characterised in that adjacent threads (12) of the carrier warp in the textile piece (4), which are crossed by threads (13) of the gauze warp, are separated from one another by threads (11), which are not crossed by threads (13) of the gauze warp.
10. Anti-slip device according to claim 1 or 2, characterised in that the textile piece (4) has loops (5) at least in sections son its free edge.
11. Anti-slip device according to claim 1 or 2, characterised in that the textile piece (4) is provided with a tube-like fold (5) on its free edge.
12. Anti-slip device according to claim 1 or 2, characterised in that an elastic element (6) is inserted in the loops or the tube-like fold (5).
13. Anti-slip device according to claim 1, characterised in that the threads of the textile piece (4), which are formed by wrap yarn (16), run transversely to the longitudinal direction of the shoe.
14. Anti-slip device according to claim 2, characterised in that the gauze warp (13) contains fewer threads than the carrier warp (12).
15. Anti-slip device according to claim 2, characterised in that the threads (12) of the carrier warp, which are crossed by threads of the gauze warp (13), are configured as monofilaments.

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