EP0108278B1 - Running shoe, especially for longer distances - Google Patents

Running shoe, especially for longer distances Download PDF

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Publication number
EP0108278B1
EP0108278B1 EP83110167A EP83110167A EP0108278B1 EP 0108278 B1 EP0108278 B1 EP 0108278B1 EP 83110167 A EP83110167 A EP 83110167A EP 83110167 A EP83110167 A EP 83110167A EP 0108278 B1 EP0108278 B1 EP 0108278B1
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EP
European Patent Office
Prior art keywords
sole
heel
sports shoe
shoe
bulge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP83110167A
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German (de)
French (fr)
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EP0108278A1 (en
Inventor
Peter R. Prof. Dr. Cavanagh
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Puma SE
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Puma AG Rudolf Dassler Sport
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Priority to AT83110167T priority Critical patent/ATE24379T1/en
Publication of EP0108278A1 publication Critical patent/EP0108278A1/en
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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/06—Running shoes; Track shoes

Definitions

  • the present invention relates to a sports shoe according to the preamble of claim 1.
  • Section 4 states that when running, the first contact between the athletic shoe and the ground on the outside or the outer edge of the shoe occurs and not at the rear edge as during walking or normal running, as illustrated in the upper illustration of Fig. 4. After the outer edge of the shoe has been placed on the ground, the foot and the shoe tend to contract to move quickly into a flat position, as shown in the middle illustration of Fig. 4.
  • the midsole is protruding on the inside of the heel, but the outer edge is arranged approximately at right angles and does not protrude practically.
  • the sole of the shoe also runs flat at the bottom towards the outer edge and is slightly inclined upwards towards the inner edge.
  • the outer edge and not the inner edge of the shoe is the first to be subjected to pressure when you step on it, the runner, who wears a running shoe with a protruding or vertical outer edge, lands on a soft «knife edge» on the outside of the shoe and there is no smooth transition or rolling of the impact phase to the flat support phase is reached, especially if the heel strike occurs slightly outside the actual edge.
  • the best way to illustrate the problem is to compare the rolling motion with that of a cylinder or shaft with a rectangular cross-section that rolls around its longitudinal axis.
  • the outer edge of the shoe is the most subject to wear on the outsole. This wear mainly occurs when the foot touches the ground for the first time and there is a relative movement between the shoe and the ground, which causes a grinding effect that wears the outer corner of the heel in the area of the line drawn in dashed lines in FIG. 5.
  • the object of the invention is therefore to provide a sports shoe of the type mentioned in such a way that an overextension of the ankle and a harmful rotation of the foot and Knee joint is prevented. Furthermore, an improvement in the tendency of the sole to wear in the outer heel area and also good cushioning of the heel joint are to be achieved without major changes having to be made to conventional sole constructions.
  • the rounded sole part is thus designed so that the foot passes into the flat phase more easily and more slowly, so that a smaller moment occurs which brings the foot into the stretched position and at the same time eliminates harmful twisting of the foot and knee joint.
  • the rounding of the sole prevents the effect of the shaft with a square cross-section, so that the transition to the flat, load-bearing phase is smoother and quicker and the grinding of the outer corner of the heel is reduced by reducing the friction forces that occur.
  • Fig. 1, 1 denotes a sports shoe for running disciplines, which has a conventional upper 2 and is provided with a sole according to the invention. As can be seen, this has three main layers. A midsole 3 is arranged closest to the upper part 2. A heel wedge 4 is provided over the rear approximately 50% of the shoe length (viewed from the arch of the foot to the rear), which supports the midsole 3 in this area. These sole layers 3 and 4 are covered on the outside at the bottom of the underside of the sole with a relatively thin outsole 5 (the outer layer of the sole) which is pulled up to the front of the toe area and to the rear in the heel area.
  • a relatively thin outsole 5 the outer layer of the sole
  • the outsole or outsole 5 is made of hard, wear-resistant material
  • the midsole 3 and the heel wedge 4 are made of elastic, shock-absorbing material (for example made of light, foamed plastic with a hardness of 45 to 50 degrees of hardness (durometer), so that these two Form a shock-absorbing sole layer 3, 4.
  • Such sole constructions are already common for running sports shoes.
  • the sole layer according to the invention of a sole for sports shoes for running disciplines differs from the known state of the art (which relates to the separate layers of midsole 3 and heel wedge 4 or to a sole which, according to FIGS. 2, 3, 6 and 7, has the same midsole a molded-on heel wedge corresponding to the heel wedge 4) is provided with a rounded edge which has a curvature radius of up to approximately 20 mm and is only approximately approximately the rear 50% of the length of the outside of the shock-absorbing sole 3, 4 and 6 extends.
  • the edge area remaining to the front from the arch of the sole is provided with a known projection 7 similar to a slope or the like, with the exception of a transition zone at approximately 50% of the sole length, where the projection 7 merges into the rounding 8 on the outside. Therefore, as can be seen from FIG. 6, in the front areas of the shock-absorbing sole 3, 4 and 6, the two lateral sole edges 71 and 81 are downwardly and obliquely outwards, that is to say «erased, whereas in the rear half the sole, the sole edge 72, which extends in the longitudinal direction of the sole, is bent off on the inside of the foot and is provided on the outside edge 82 with a curvature 8 of about 20 mm radius. For manufacturing reasons, the curvature 8 preferably extends over the entire height of the shock-absorbing sole 3, 4 or 6.
  • the arch 8 ends approximately at a height of 50% of the total height of the sole from the underside of the outsole 5 and does not extend from the underside to the upper resilient level of the sole (on the upper part 2). Since the rounded edge touches the ground, it is preferable in any case that the thin outsole 5 extends laterally so far that it extends at least in the region of the arch 8 to the shock-absorbing sole 3, 4 and 6. It can also be considered, for example, that the lateral projection 7 or “slope” in the front half of the sole on the outside 81 is less pronounced than on the inside 71 or can even be quite vertical.
  • a shock absorber 9 designed as a plate or bolt is connected to the sole parallel to the curvature 8 of the outer sole edge 82.
  • the shock-absorbing sole 6 ' is designed in the same way as the sole 3, 4 or 6 described above.
  • a curved layer 10 can be attached to the outside of the shock absorber 9, the material of which is considerably softer than that the shock absorber ends 3, 4 or 6 or 6 ', namely softer than, for example, 45-50 degrees of hardness (durometer), as a result of which an even better shock absorption occurs during the heel strike.
  • the shock absorber 9 extends from the underside to the resilient line (that is, to the beginning of the upper part 2) to a point corresponding to the curvature 8 of the embodiment according to Fig. 2. However, this should be the furthest external location for the shock absorber 9 can be viewed. This point can expediently be shifted to a further point below the outer edge of the upper part 2, as indicated at 9 '. In this case, the layer 10 consisting of softer material would be displaced accordingly so far that it occupies the area between the lines 9 and 9 ', for example. It should be further emphasized that the size and elasticity of the layer 10 and the elasticity of the shock absorber 9 need not have any special values, as long as they are both coordinated in such a way that they ensure sufficient shock absorption and support for the foot under the anticipated running conditions.
  • the arch 8 of the sole part in question smoothes the shock during the heel joint much more safely and softer than soles with the known outwardly projecting bevels or the like in the area mentioned between the arch of the foot and the heel end.
  • there is a smaller moment that brings the foot into the stretched position while at the same time the transition of the foot into the flat supporting phase occurs more smoothly without a kind of rectangular. Wavy effect occurs, and the abrasive removal of the rear outer corner of the sole is reduced by reducing the resulting frictional forces.
  • the design of the sports shoe or its sole according to the invention does not require the manufacturer to make major changes in its manufacturing technology in order to introduce the invention into its manufacture.

Abstract

An otherwise conventionally constructed running shoe sole is provided with a rounded border having a radius of curvature of about 20 mm only along approximately the rear 50% of the length of the outer side of the midsole and heel edge layers, the remaining border area being provided with a conventional flaring or the like with the exception of a transition zone. In accordance with a modified embodiment, a convexly curved shock-absorber bar is incorporated into the sole and is outwardly covered by a layer of softer material which is provided with the outer curvature, and which increases the cushioning capacity of the sole during initial heel strike.

Description

Die vorliegende Erfindung bezieht sich auf einen Sportschuh gemäß dem Oberbegriff des Anspruches 1.The present invention relates to a sports shoe according to the preamble of claim 1.

Bei sportlichen Laufdisziplinen über größere Distanzen treten im Fuß- und Fersenbereich besondere Belastungen auf. Diese sind im einzelnen im Buch « The Running Shoe Book", von P.R. Cavanagh, erschienen bei Anderson World Inc, 1980, beschrieben. So ist dort im Abschnitt 4 dargelegt, daß beim Laufen der erste Kontakt zwischen dem Sportschuh und dem Boden an der Außenseite oder Außenkante des Schuhs auftritt und nicht wie beim Spazierengehen oder bei normalem Laufen, an dessen Hinterkante. Dies ist in der oberen Darstellung der Fig. 4 der Zeichnung veranschaulicht. Nach dem Aufsetzen der Schuhaußenkante auf den Boden tendieren der Fuß und der Schuh dazu, sich schnell in eine flache Lage zu bewegen, wie die mittlere Darstellung der Fig. 4 zeigt. Diese Bewegung des Fußes in die flache Lage beansprucht besonders das Fußgelenk, das die Verbindung zwischen dem Sprungbein und dem Fersenbein herstellt. Von dieser flachen Stellung aus geht die von einer zur anderen Seite auftretende Rollbewegung in eine Lage über, die als « Streckung (Pronation) bezeichnet wird und in der unteren Darstellung der Fig. 4 gezeigt ist, wobei der Fuß zur Innenkante hin abgewinkelt ist. Diese Rollbewegung in die Strecklage führt nur dann zu Schwierigkeiten, wenn die Streckung sich nicht in einem normalen Bereich hält. Da die Streckung mit der Drehung des Fußgelenks in Verbindung steht, betrifft sie sowohl das Bein als auch den Fuß mit dem Ergebnis, daß das Fußgelenk gestreckt wird, wenn sich das Bein nach innen dreht. Tritt eine zu große Streckung (Überdehnung) auf, dann kommt es zu einer starken Einwärtsdrehung des Beines, was eine schraubenförmige Bewegung am Kniegelenk bewirkt. Da das Knie für eine derartige Belastung nicht widerstandsfähig genug ausgebildet ist, wird das Kniegelenk des Läufers mit großer Wahrscheinlichkeit beschädigt, wenn zu hohe Streckungen auftreten.In athletic running disciplines over longer distances, special stresses occur in the foot and heel area. These are described in detail in "The Running Shoe Book", by PR Cavanagh, published by Anderson World Inc, 1980. Section 4, for example, states that when running, the first contact between the athletic shoe and the ground on the outside or the outer edge of the shoe occurs and not at the rear edge as during walking or normal running, as illustrated in the upper illustration of Fig. 4. After the outer edge of the shoe has been placed on the ground, the foot and the shoe tend to contract to move quickly into a flat position, as shown in the middle illustration of Fig. 4. This movement of the foot into the flat position places particular stress on the ankle, which establishes the connection between the anklebone and the heelbone a rolling movement occurring to the other side into a position which is referred to as «extension (pronation) and is shown in the lower illustration in FIG. 4 is, with the foot angled towards the inner edge. This rolling movement into the stretched position only leads to difficulties if the stretching is not in a normal range. Since the stretch is related to the rotation of the ankle, it affects both the leg and the foot, with the result that the ankle is stretched when the leg turns inward. If there is too much extension (overextension), the leg is turned inwards sharply, which causes a helical movement at the knee joint. Since the knee is not designed to withstand such a load, the runner's knee joint is likely to be damaged if the stretches are too high.

Um die genannte Rollbewegung von der Außen- zur Innenseite während der tragenden, flachen Phase zu verhindern, werden bereits seit dem Jahre 1975 die Sohlen von Sportschuhen für Laufdisziplinen an den Seiten nach außen überstehend ausgebildet. Das typische Überstehen ist in den Fig. 4 und 6 der Zeichnung dargestellt, wobei ersichtlich ist, daß die Mittelsohle unten weit übersteht und nach oben zur federnden Ebene hin, wo die Sohle am Schuhoberteil befestigt ist, sich allmählich verjüngt. In dem genannten Buch ist ausgeführt, daß es keinen Grund gab, die überstehenden Kanten an der Innen- und Außenseite symmetrisch auszubilden und daß der äußere Überhang verkleinert sein könnte, da der höchste Widerstand an der Innenseite erwünscht ist, um die Einwärts-Rollbewegung zu verhindern. Eine Ausführung dieser Idee ist in der US-PS 4 255 877 in Fig. 4 gezeigt, bei der jedoch die Mittelsohle an der Innenseite der Ferse überstehend ausgebildet ist, die Außenkante jedoch etwa rechtwinklig angeordnet ist und praktisch nicht übersteht. Die Schuhsohle verläuft außerdem unten zur Außenkante hin plan und zur Innenkante hin ist sie leicht schräg nach oben verlaufend ausgebildet.In order to prevent the aforementioned rolling movement from the outside to the inside during the load-bearing, flat phase, the soles of sports shoes for running disciplines have been protruding from the sides since 1975. The typical protrusion is shown in FIGS. 4 and 6 of the drawing, it being evident that the midsole protrudes far below and gradually tapers upwards towards the resilient plane, where the sole is attached to the upper of the shoe. In the cited book it was stated that there was no reason to make the protruding edges symmetrical on the inside and outside and that the outer overhang could be reduced, since the greatest resistance on the inside is desired in order to prevent the inward rolling movement . An embodiment of this idea is shown in US Pat. No. 4,255,877 in FIG. 4, in which, however, the midsole is protruding on the inside of the heel, but the outer edge is arranged approximately at right angles and does not protrude practically. The sole of the shoe also runs flat at the bottom towards the outer edge and is slightly inclined upwards towards the inner edge.

Da beim Auftreten die Außenkante und nicht die Innenkante des Schuhs als erste auf Druck beansprucht wird, landet der Läufer, der einen Laufschuh mit überstehender oder senkrechter Außenkante trägt, auf einer weichen « Messerkante » an der Schuhaußenseite und es wird kein glatter Übergang oder Rollen von der Auftreffphase zur flachen Tragphase erreicht, insbesondere, wenn der Fersenstoß etwas außerhalb der tatsächlichen Kante auftritt. In dieser Hinsicht kann das Problem vielleicht am besten damit veranschaulicht werden, wenn man die Abrollbewegung mit derjenigen eines Zylinders oder einer Welle mit rechteckigem Querschnitt, die um deren Längsachse rollt, vergleicht. Weiterhin ist wegen der obengenannten örtlichen Lage des ersten Fersenkontaktes mit dem Boden die Außenkante des Schuhs die am meisten der Abnutzung unterworfene Stelle der Außensohle. Diese Abnutzung tritt überwiegend dann auf, wenn der Fuß erstmals den Boden berührt und eine Relativbewegung zwischen Schuh und Boden stattfindet, was einen Schleifeffekt hervorruft, der die Außenecke der Ferse im Bereich der in Figur 5 gestrichelt gezeichneten Linie verschleißt.Since the outer edge and not the inner edge of the shoe is the first to be subjected to pressure when you step on it, the runner, who wears a running shoe with a protruding or vertical outer edge, lands on a soft «knife edge» on the outside of the shoe and there is no smooth transition or rolling of the impact phase to the flat support phase is reached, especially if the heel strike occurs slightly outside the actual edge. In this regard, perhaps the best way to illustrate the problem is to compare the rolling motion with that of a cylinder or shaft with a rectangular cross-section that rolls around its longitudinal axis. Furthermore, because of the above-mentioned local position of the first heel contact with the ground, the outer edge of the shoe is the most subject to wear on the outsole. This wear mainly occurs when the foot touches the ground for the first time and there is a relative movement between the shoe and the ground, which causes a grinding effect that wears the outer corner of the heel in the area of the line drawn in dashed lines in FIG. 5.

In der US-PS-4241 523 ist ein Schuh dargestellt, dessen Laufsohle eine konvexe Wölbung besitzt, um eine Rollbewegung des Fußes und des Schuhs nach dem Auftreten des Schuhträgers auf den Boden zu erleichtern. Da diese Wölbung jedoch ein Abrollen um eine gedachte seitliche Achse hinten an der Ferse bewirkt und diese Rollbewegung durch eine Wölbung hervorgerufen wird, die, wie besonders herausgestellt ist, notwendigerweise relativ hart und nur in begrenztem Umfang elastisch sein soll, ist diese Sohlenkonstruktion für Laufschuhe der genannten Art ungeeignet. Dies heißt aber, daß entsprechend der Tatsache, daß der Fersenstoß an der Außenkante auftritt, was eine Rollbewegung von einer Seite zur anderen bewirkt (im Gegensatz zu der Rollbewegung von hinten nach vorn, die nach dem Fersenstoß beim Spazierengehen abläuft), die in dem US-Patent 4 241 523 benutzte Wölbung im Hinblick auf die typische, beim sportlichen Laufen auftretende Bewegung unwirksam ist, weil die harte Konstruktion der Wölbung eine befriedigende Abfederung des Fußes während des Fersenstoßes verhindert.In US-PS-4241 523 a shoe is shown, the outsole of which has a convex curvature in order to facilitate a rolling movement of the foot and the shoe after the foot wearer has hit the ground. However, since this curvature causes a roll around an imaginary lateral axis at the back of the heel, and this rolling movement is caused by a curvature which, as is particularly emphasized, is necessarily relatively hard and should only be elastic to a limited extent, this sole construction for running shoes is unsuitable. However, this means that in accordance with the fact that the heel strike occurs on the outer edge, which causes a roll movement from side to side (as opposed to the roll movement from the back to the front that occurs after the heel strike while walking) that in the US -Patent 4 241 523 used arch is ineffective with regard to the typical movement occurring during sporty running, because the hard construction of the arch prevents a satisfactory cushioning of the foot during the heel strike.

Aufgabe der Erfindung ist es daher, einen Sportschuh der eingangs genannten Art so auszubilden, daß eine Überdehnung des Fußgelenks sowie eine schädliche Verdrehung des Fuß- und Kniegelenks verhindert wird. Weiterhin soll eine Verbesserung der Verschleißneigung der Sohle im äußeren Fersenbereich und außerdem eine gute Dämpfung des Fersenstoßes erreicht werden, ohne daß an üblichen Sohlenkonstruktionen große Änderungen vorgenommen werden müssen.The object of the invention is therefore to provide a sports shoe of the type mentioned in such a way that an overextension of the ankle and a harmful rotation of the foot and Knee joint is prevented. Furthermore, an improvement in the tendency of the sole to wear in the outer heel area and also good cushioning of the heel joint are to be achieved without major changes having to be made to conventional sole constructions.

Gelöst wird diese Aufgabe durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale.This object is achieved by the features specified in the characterizing part of claim 1.

Der abgerundete Sohlenteil ist also so ausgebildet, daß der Fuß leichter und langsamer in die flache Phase übergeht, so daß ein kleineres Moment auftritt, das den Fuß in die Strecklage bringt und zugleich eine schädliche Verdrehung des Fuß- und Kniegelenks beseitigt. Gleichzeitig verhindert die Abrundung der Sohle an der genannten Stelle den Effekt der Welle mit quadratischem Querschnitt, so daß der Übergang in die flache, tragende Phase ruhiger und zügiger erfolgt und das Abschleifen der äußeren Ecke der Ferse durch die Verkleinerung der auftretenden Reibungskräfte vermindert wird.The rounded sole part is thus designed so that the foot passes into the flat phase more easily and more slowly, so that a smaller moment occurs which brings the foot into the stretched position and at the same time eliminates harmful twisting of the foot and knee joint. At the same time, the rounding of the sole prevents the effect of the shaft with a square cross-section, so that the transition to the flat, load-bearing phase is smoother and quicker and the grinding of the outer corner of the heel is reduced by reducing the friction forces that occur.

Weitere vorteilhafte Einzelheiten der Erfindung sind in den Unteransprüchen angegeben und werden nachfolgend anhand der in der Zeichnung veranschaulichten Ausführungsbeispiele beschrieben. Dabei zeigen :

  • Figur 1 eine Seitenansicht eines Sportschuhs mit einer erfindungsgemäßen Sohlenkonstruktion, teilweise im Schnitt,
  • Figur 2 eine schematische Rückansicht des linken Schuhs,
  • Figur 3 eine schematische Rückansicht des rechten Schuhs mit einer möglichen Abwandlung der Erfindung,
  • Figur 4 eine schematische Darstellung der beim Laufen auftretenden Rollbewegung von einer Seite zur anderen in drei Phasen,
  • Figur 5 eine Ansicht auf eine Laufsohle und die
  • Figuren 6 und 7 einen schematischen Schnitt durch die Sohle gemäß den Linien X-X bzw. Y-Y der Fig. 5.
Further advantageous details of the invention are specified in the subclaims and are described below with reference to the exemplary embodiments illustrated in the drawing. Show:
  • FIG. 1 shows a side view of a sports shoe with a sole construction according to the invention, partly in section,
  • FIG. 2 shows a schematic rear view of the left shoe,
  • FIG. 3 shows a schematic rear view of the right shoe with a possible modification of the invention,
  • FIG. 4 shows a schematic illustration of the rolling movement occurring during running from one side to the other in three phases,
  • Figure 5 is a view of an outsole and the
  • 6 and 7 show a schematic section through the sole according to lines XX and YY of FIG. 5.

In Fig. 1 ist mit 1 ein Sportschuh für Laufdisziplinen bezeichnet, der ein übliches Oberteil 2 aufweist und mit einer Sohle gemäß der Erfindung versehen ist. Diese besitzt, wie ersichtlich, drei Hauptschichten. Dem Oberteil 2 am nächsten ist eine Mittelsohle 3 angeordnet. Über die hinteren etwa 50 % der Schuhlänge (von der Fußwölbung aus nach hinten betrachtet) ist ein Fersenkeil 4 vorgesehen, der die Mittelsohle 3 in diesem Bereich trägt. Diese Sohlenlagen 3 und 4 sind außen am Boden der Unterseite der Sohle mit einer relativ dünnen Laufsohle 5 (der äußeren Sohlenschicht) bedeckt, die vorn bis zur Vorderseite des Zehenbereiches und hinten im Fersenbereich nach oben hochgezogen ist. Während die Laufsohle oder Außensohle 5 aus hartem, verschleißfestem Material besteht, sind die Mittelsohle 3 und der Fersenkeil 4 aus elastischem, stoßdämpfendem Material (beispielsweise aus leichtem, geschäumtem Kunststoff mit einer Härte von 45 bis 50 Härtegraden (durometer) ausgebildet, so daß diese beiden Schichten 3, 4 eine stoßdämpfende Sohlenlage bilden. Derartige Sohlenkonstruktionen sind für Laufsportschuhe bereits üblich.In Fig. 1, 1 denotes a sports shoe for running disciplines, which has a conventional upper 2 and is provided with a sole according to the invention. As can be seen, this has three main layers. A midsole 3 is arranged closest to the upper part 2. A heel wedge 4 is provided over the rear approximately 50% of the shoe length (viewed from the arch of the foot to the rear), which supports the midsole 3 in this area. These sole layers 3 and 4 are covered on the outside at the bottom of the underside of the sole with a relatively thin outsole 5 (the outer layer of the sole) which is pulled up to the front of the toe area and to the rear in the heel area. While the outsole or outsole 5 is made of hard, wear-resistant material, the midsole 3 and the heel wedge 4 are made of elastic, shock-absorbing material (for example made of light, foamed plastic with a hardness of 45 to 50 degrees of hardness (durometer), so that these two Form a shock-absorbing sole layer 3, 4. Such sole constructions are already common for running sports shoes.

Demgegenüber ist die erfindungsgemäße Sohlenschicht einer Sohle für Sportschuhe für Laufdisziplinen abweichend vom bekannten Stand der Technik (der sich auf die getrennten Lagen Mittelsohle 3 und Fersenkeil 4 oder auf eine Sohle, die gemäß den Fig. 2, 3, 6 und 7 als einheitliche Mittelsohle mit einem angeformten, dem Fersenkeil 4 entsprechenden Fersen-Hebekeil bezieht) mit einem gerundeten Rand versehen, der einen Wölbungsradius von bis zu etwa 20 mm aufweist und sich nur über ungefähr die hinteren 50 % der Länge der Außenseite der stoßdämpfenden Sohle 3, 4 bzw. 6 erstreckt. Der von der Fußwölbung der Sohle aus nach vorn verbleibende Randbereich ist mit einer an sich bekannten Ausladung 7 ähnlich einer Abböschung oder dgl. versehen mit Ausnahme einer Übergangszone bei etwa 50 % der Sohlenlänge, wo außen die Ausladung 7 in die Abrundung 8 übergeht. Daher sind, wie aus der Fig. 6 ersichtlich, in den vorderen Bereichen der stoßdämpfenden Sohle 3, 4 bzw. 6 die beiden seitlichen Sohlenkanten 71 bzw. 81 nach unten und schräg nach außen verlaufend, also « abgeböscht ausgebildet, wogegen in der hinteren Hälfte der Sohle die sich in Sohlenlängsrichtung erstreckende Sohlenkante 72 an der Innenseite des Fußes « abgeböscht und an der Außenkante 82 mit einer Wölbung 8 von etwa 20 mm Radius versehen ist. Aus Fertigungsgründen erstreckt sich die Wölbung 8 vorzugsweise über die gesamte Höhe der stoßdämpfenden Sohle 3, 4 bzw. 6.In contrast, the sole layer according to the invention of a sole for sports shoes for running disciplines differs from the known state of the art (which relates to the separate layers of midsole 3 and heel wedge 4 or to a sole which, according to FIGS. 2, 3, 6 and 7, has the same midsole a molded-on heel wedge corresponding to the heel wedge 4) is provided with a rounded edge which has a curvature radius of up to approximately 20 mm and is only approximately approximately the rear 50% of the length of the outside of the shock-absorbing sole 3, 4 and 6 extends. The edge area remaining to the front from the arch of the sole is provided with a known projection 7 similar to a slope or the like, with the exception of a transition zone at approximately 50% of the sole length, where the projection 7 merges into the rounding 8 on the outside. Therefore, as can be seen from FIG. 6, in the front areas of the shock-absorbing sole 3, 4 and 6, the two lateral sole edges 71 and 81 are downwardly and obliquely outwards, that is to say «erased, whereas in the rear half the sole, the sole edge 72, which extends in the longitudinal direction of the sole, is bent off on the inside of the foot and is provided on the outside edge 82 with a curvature 8 of about 20 mm radius. For manufacturing reasons, the curvature 8 preferably extends over the entire height of the shock-absorbing sole 3, 4 or 6.

Jedoch kann es ausreichend sein, wenn die Wölbung 8 etwa in einer Höhe von 50 % der Gesamthöhe der Sohle von der Unterseite der Laufsohle 5 aus endet und sich nicht von der Unterseite bis zur oberen federnden Ebene der Sohle (am Oberteil 2) erstreckt. Da die abgerundete Kante den Boden berührt, ist es in jedem Fall vorzuziehen, daß sich die dünne Laufsohle 5 seitlich so weit herum erstreckt, daß sie zumindest im Bereich der Wölbung 8 bis über die stoßdämpfende Sohle 3, 4 bzw. 6 reicht. Auch kann beispielsweise in Erwägung gezogen werden, daß die seitliche Ausladung 7 oder « Abböschung » in der vorderen Hälfte der Sohle an der Außenseite 81 weniger ausgeprägt ist als an der Innenseite 71 oder sogar ziemlich senkrecht verlaufen kann.However, it may be sufficient if the arch 8 ends approximately at a height of 50% of the total height of the sole from the underside of the outsole 5 and does not extend from the underside to the upper resilient level of the sole (on the upper part 2). Since the rounded edge touches the ground, it is preferable in any case that the thin outsole 5 extends laterally so far that it extends at least in the region of the arch 8 to the shock-absorbing sole 3, 4 and 6. It can also be considered, for example, that the lateral projection 7 or “slope” in the front half of the sole on the outside 81 is less pronounced than on the inside 71 or can even be quite vertical.

Anhand der Fig. 3 sei eine Abwandlung der Erfindung beschrieben. Entsprechend dieser Ausgestaltung ist mit der Sohle parallel zur Wölbung 8 der äußeren Sohlenkante 82 ein als Platte oder Riegel ausgebildeter Schockdämpfer 9 verbunden. Innenliegend in Bezug auf den Schockdämpfer 9 ist die stoßdämpfende Sohle 6' in der gleichen Art und Weise ausgebildet wie die oben beschreibene Sohle 3, 4 bzw. 6. Jedoch kann außen am Schockdämpfer 9 eine gewölbte Schicht 10 angebracht sein, deren Material wesentlich weicher ist als dasjenige der stoßdämpfenden Sohle 3, 4 bzw. 6 bzw. 6', nämlich weicher als beispielsweise 45-50 Härtegrade (durometer), wodurch eine noch bessere Schock-Absorption während des Fersenstoßes auftritt.A modification of the invention will be described with reference to FIG. 3. According to this embodiment, a shock absorber 9 designed as a plate or bolt is connected to the sole parallel to the curvature 8 of the outer sole edge 82. On the inside with respect to the shock absorber 9, the shock-absorbing sole 6 'is designed in the same way as the sole 3, 4 or 6 described above. However, a curved layer 10 can be attached to the outside of the shock absorber 9, the material of which is considerably softer than that the shock absorber ends 3, 4 or 6 or 6 ', namely softer than, for example, 45-50 degrees of hardness (durometer), as a result of which an even better shock absorption occurs during the heel strike.

Wie in Fig. 3 gezeigt, erstreckt sich der Schöckdämpfer 9 von der Unterseite bis zur federnden Linie (also bis zum Beginn des Oberteils 2) bis zu einer Stelle entsprechend der Wölbung 8 der Ausführung gemäß Fig. 2. Dies sollte jedoch als die am weitesten außen liegende Stelle für den Schockdämpfer 9 angesehen werden. Diese Stelle kann zweckmäßig in eine weiter innen liegende Stelle unterhalb der Außenkante des Oberteils 2 verlagert sein, wie bei 9' angedeutet. In diesem Fall würde die aus weicherem Material bestehende Schicht 10 entsprechend so weit verlagert sein, daß sie beispielsweise den Bereich zwischen den Linien 9 und 9' einnimmt. Es sei weiter hervorgehoben, daß die Größe und Elastizität der Schicht 10 und die Elastizität des Schockdämpfers 9 keine besonderen Werte besitzen müssen, so lange sie beide zusammen so abgestimmt sind, daß sie eine ausreichende Schockabsorption und Stütze für den Fuß unter den vorauszusehenden Laufbedingungen gewährleisten.As shown in Fig. 3, the shock absorber 9 extends from the underside to the resilient line (that is, to the beginning of the upper part 2) to a point corresponding to the curvature 8 of the embodiment according to Fig. 2. However, this should be the furthest external location for the shock absorber 9 can be viewed. This point can expediently be shifted to a further point below the outer edge of the upper part 2, as indicated at 9 '. In this case, the layer 10 consisting of softer material would be displaced accordingly so far that it occupies the area between the lines 9 and 9 ', for example. It should be further emphasized that the size and elasticity of the layer 10 and the elasticity of the shock absorber 9 need not have any special values, as long as they are both coordinated in such a way that they ensure sufficient shock absorption and support for the foot under the anticipated running conditions.

In Übereinstimmung mit den beschriebenen Ausführungsformen der Erfindung glättet die Wölbung 8 des betreffenden Sohlenteils den Schock während des Fersenstoßes viel sicherer und weicher als Sohlen mit den bekannten nach außen überragenden Abschrägungen oder dergleichen in dem genannten Bereich zwischen der Fußwölbung und dem Fersenende. Dadurch tritt ein kleineres, den Fuß in die Strecklage bringendes Moment auf, während gleichzeitig der Übergang des Fußes in die flache tragende Phase weicher erfolgt, ohne daß eine Art Rechteck-. Wellen-Effekt auftritt, und der schleifende Abtrag der hinteren äußeren Ecke der Sohle durch Verkleinerung der entstehenden Reibungskräfte vermindert wird. Außerdem ist darauf hinzuweisen, daß die erfindungsgemäße Ausgestaltung des Sportschuhes bzw. dessen Sohle vom Hersteller nicht erfordert, größere Änderungen in seiner Fertigungstechnik durchzuführen, um die Erfindung in seine Fertigung einzuführen.In accordance with the described embodiments of the invention, the arch 8 of the sole part in question smoothes the shock during the heel joint much more safely and softer than soles with the known outwardly projecting bevels or the like in the area mentioned between the arch of the foot and the heel end. As a result, there is a smaller moment that brings the foot into the stretched position, while at the same time the transition of the foot into the flat supporting phase occurs more smoothly without a kind of rectangular. Wavy effect occurs, and the abrasive removal of the rear outer corner of the sole is reduced by reducing the resulting frictional forces. It should also be pointed out that the design of the sports shoe or its sole according to the invention does not require the manufacturer to make major changes in its manufacturing technology in order to introduce the invention into its manufacture.

Claims (13)

1. A sports shoe for running disciplines, in particular over longer distances, having a soft elastic shock-damping middle sole (3) and a harder wear-resistant running sole (5) applied to it and having a heel wedge (4) which raises the heel, where the shoe sole (6, 6' ; 3, 4, 5) in the region of the heel stands out on the one side outwards beyond the upper (2) and the edge of the sole at that point is constructed to run at an obtuse angle with respect to the vertical and the shoe sole (6, 6'; 3, 4, 5) or respectively the running sole (5) on the other side in the region of the heel runs on a slope upwards, characterized in that the shoe sole (6) in the region of the heel runs on a slope up towards the outer edge (82) of the sole, because the outer edge (82) of the sole is provided with a convex bulge (8) which extends forwards over the region of the heel but not as far as beyond the arch of the foot and which exhibits a radius which is large relatively to the thickness of the shoe sole (6) in the region of the heel.
2. A sports shoe as in Claim 1, characterized in that the bulge (8) extends over at least 50 % of the height of the springily yielding region of the sole (3, 4 ; 6, 6').
3. A sports shoe as in Claim 1 or 2, characterized in that at the outer edge of the sole (3, 4 ; 6, 6') the length having the bulge (8) adjoins towards the front an edge shape (7) running obliquely downwards and outwards.
4. A sports shoe as in Claim 3, characterized in that the bulge (8) changes into the oblique shape at about 50 % of the length of the sole.
5. A sports shoe as in one of the Claims 1 to 4, characterized in that the bulge extends over the whole height of the shock-damping layer (3, 4 ; 6, 6') of the sole.
6. A sports shoe as in one of the Claims 1 to 5, characterized in that on the shock-damping layer (3, 4 ; 6, 6') of the sole in parallel with the portion having the bulge (8) a correspondingly bulged elastic shock-absorbing part (9) is provided.
7. A sports shoe as in Claim 6, characterized in that the shock-absorbing part (9) extends over the whole length of the bulge (8).
8. A sports shoe as in Claim 6 or 7, characterized in that in the case of a shock-absorbing part (9) applied on the outside it is covered over on the outside by a layer (10) of a material which has greater shock-damping properties than the shock-damping sole (3 ; 6, 6') lying inside and the heel wedge (4) and that this layer (10) is provided with the bulge (8).
9. A sports shoe as in one of the Claims 1 to 8, characterized in that the middle sole (3) and the heel wedge (4) consist of two parts connected together.
10. A sports shoe as in one of the Claims 1 to 8, characterized in that the middle sole (3) and the heel wedge (4) form one structural unit.
11. A sports shoe as in one of the Claims 1 to 10, characterized in that the middle sole (3) and the heel wedge (4) consist of foamed plastics having a hardness of 45-50 degrees of hardness (durometer).
12. A sports shoe as in one of the Claims 1 to 11, characterized in that the radius of the convex rounding amounts to about 20 mm.
13. A sports shoe as in one of the Claims 1 to 12, characterized in that the running sole (5) is made thin relatively to the thickness of the sole (6, 6') and also extends sideways at least over the bulge (8) of the sole construction.
EP83110167A 1982-10-13 1983-10-12 Running shoe, especially for longer distances Expired EP0108278B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110167T ATE24379T1 (en) 1982-10-13 1983-10-12 SPORTS SHOE FOR RUNNING DISCIPLINES, ESPECIALLY OVER LONGER DISTANCES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/434,047 US4449306A (en) 1982-10-13 1982-10-13 Running shoe sole construction
US434047 1989-11-09

Publications (2)

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EP0108278A1 EP0108278A1 (en) 1984-05-16
EP0108278B1 true EP0108278B1 (en) 1986-12-30

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US (1) US4449306A (en)
EP (1) EP0108278B1 (en)
AT (1) ATE24379T1 (en)
CA (1) CA1206749A (en)
DE (1) DE3368497D1 (en)

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EP0108278A1 (en) 1984-05-16
ATE24379T1 (en) 1987-01-15
DE3368497D1 (en) 1987-02-05
US4449306A (en) 1984-05-22
CA1206749A (en) 1986-07-02

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