EP0564525B1 - Shoe sole and process for making it - Google Patents
Shoe sole and process for making itInfo
- Publication number
- EP0564525B1 EP0564525B1 EP92901794A EP92901794A EP0564525B1 EP 0564525 B1 EP0564525 B1 EP 0564525B1 EP 92901794 A EP92901794 A EP 92901794A EP 92901794 A EP92901794 A EP 92901794A EP 0564525 B1 EP0564525 B1 EP 0564525B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sole
- wood
- upper sole
- accordance
- reinforcing layer
- 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 - Lifetime
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Classifications
-
- 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
- A43B13/08—Wood
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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
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
Definitions
- the invention relates to a shoe sole with an upper sole part made of wood, the upper, preferably orthopedically shaped, of which forms the support for the sole of the foot, and an outsole made of elastic and flexible material arranged below the upper sole part, the upper sole part being divided into several at least in the ball area is divided transversely to the longitudinal direction of the sole strip, which are connected to each other by flexible intermediate pieces, preferably made of polyurethane foamed onto the wood.
- the invention further relates to a method for producing such a shoe sole.
- Shoe soles with an upper sole part made of wood and with an outer sole of elastic and flexible material attached to the underside of this upper sole part have been known for a long time.
- Such shoe soles have the advantage that they have excellent hygienic properties because they are sweat-wicking and moisture-regulating, and that they support the foot in an orthopedically correct manner, especially when the upper surface of the upper sole part is orthopedically shaped.
- the rigidity of the shoe soles, whose upper sole part consists entirely of wood is disadvantageous. Bending in the ball area, as is necessary for walking comfortably, is therefore not possible with such shoe soles.
- the strips located between the flexible intermediate pieces must be narrow, as seen in the longitudinal direction of the sole, in order to be able to accommodate all the elastic intermediate pieces in the ball area.
- the longitudinal direction of the wood in shoe soles usually runs in the longitudinal direction of the sole, the division of the Upper part of the sole in strips is therefore transverse to it. If the individual strips are narrow, there is a risk that if the strips are loaded unevenly, the strips will break along the longitudinal direction of the wood, thus transverse to the longitudinal direction of the strips. Such an uneven load occurs, for example, when uneven surfaces are walked on with the sole. Stones that you step on with the sole of your shoe can cause one or more stripes to break.
- the object of the present invention is to avoid this disadvantage and to form a shoe sole in which the risk of breakage of the narrow strips is avoided.
- the solution to this problem according to the invention starting from a shoe sole of the type described at the outset, is that, at least in the area of the strips, the underside of the upper sole part is firmly connected to a surface with a reinforcing layer. As a result of the flat, firm connection to the underside of the upper sole part, this reinforcing layer reinforces the strips transversely to the longitudinal direction of the wood, thereby eliminating the risk of breakage even when the sole is loaded unevenly.
- the reinforcement layer consists of at least one, preferably glued, layer of wood veneer attached to the underside of the upper sole part.
- a single layer of wood veneer is often sufficient for reinforcement.
- the use of such a wood veneer or of such a plywood has the advantage that, due to the similarity of the materials, both for the upper sole part and for the reinforcing layer, a firm two-dimensional connection can preferably be achieved by means of gluing, which is necessary for achieving the desired effect is.
- the longitudinal direction of the fibers of at least one of the layers of wooden veneer runs perpendicular to the longitudinal direction of the fibers of the upper sole part made of wood, since the individual strips are then reinforced primarily in the direction in which the risk of breakage occurs given is.
- the longitudinal fiber direction of this single layer is to be arranged perpendicular to the longitudinal fiber direction of the upper sole part made of wood.
- plywood which is formed, for example, from three layers of cross-glued wood veneer, it is advisable to have the fiber longitudinal direction of the two outer layers perpendicular to the fiber longitudinal direction of the upper sole part made of wood and the middle layer transverse to it.
- the reinforcement layer can also consist of a flat plastic part attached to the underside of the upper sole part.
- the reinforcement layer is formed by a plastic film glued to the underside of the upper sole part.
- a curable but not yet hardened plastic material for example by spraying or filling, can also be applied to the underside of the upper sole part, which forms the reinforcing layer after hardening.
- the reinforcement layer can also extend over that area of the underside of the upper sole part in which the intermediate pieces are arranged.
- the surface of the underside of the upper sole part formed by the intermediate pieces is kept free from the reinforcing layer.
- the intermediate pieces and the outsole can be formed in one piece, since the reinforcing layer then does not form a separation between the intermediate pieces and the outsole.
- the method according to the invention for producing the shoe sole described essentially consists in that after a reinforcing layer has been firmly connected to the underside of a piece of wood forming the upper sole part, at least in the ball area, preferably by gluing or gluing, several on this underside in the ball area Incisions are made, for example by milling, through which the reinforcing layer is completely cut and the piece of wood forming the upper sole part is at least partially cut, that this piece of wood, with the reinforcing layer sections firmly connected to it, is inserted into a mold so that a liquid is then poured into the mold Plastic material, introduced and allowed to solidify, whereby in the region of the incisions, the intermediate pieces and the outsole formed therewith in one piece are formed, and that the sole part thus produced is finally removed from the mold.
- the piece of wood forming the upper sole part does not have to have the exact shape of the upper sole part, but can also be larger, in particular have a greater thickness, measured perpendicular to the upper side of the sole. In this case, it is in fact possible not to completely cut through the piece of wood forming the upper sole part, but a connection can still be maintained on the upper side thereof, which considerably simplifies insertion into the mold.
- At least the upper side of the wooden piece forming the upper sole part is processed in a material-lifting manner, preferably by milling or grinding, whereby not only the orthopedic shape of this upper side can be achieved, but also that area is removed in which is still a connection of the wooden piece forming the upper sole part, and thereby the intermediate pieces extend to the top of the upper sole part.
- FIG. 1 shows a plan view of the shoe sole according to the invention and FIG. 2 shows a section along the line II-II in FIG. 1.
- the shoe sole according to the invention has an upper sole part 1 made of wood, the orthopedically shaped upper side 2 of which forms the support for the sole of the foot.
- the upper sole part 1 is divided into a plurality of strips 3 running transversely to the longitudinal direction of the sole, which strips are connected to one another and to the adjacent sections 4, 5 by flexible intermediate pieces 6.
- the flexible intermediate pieces 6 are preferably made of polyurethane, which is foamed onto the wooden parts 3, 4, 5, whereby a permanent connection between the wooden parts and the flexible intermediate pieces 6 is produced.
- an outsole 7 made of elastic and flexible material, which is formed in one piece with the intermediate pieces 6 and preferably also consists of polyurethane foamed onto the wood.
- the strips 3 Since the bendability of the sole must be given in the ball area, the strips 3 must be arranged at least in the ball area.
- the Strips 3 are therefore, as can also be seen from the drawing, narrow in the longitudinal direction of the sole. Since with wooden soles the longitudinal fiber usually also runs in the longitudinal direction of the sole, there is a risk of the strips breaking along a longitudinal fiber if the sole is subjected to uneven loading, such as occurs, for example, when walking on an uneven surface. In order to counter this risk, a reinforcement layer 8 is firmly and flatly connected to the strips on the underside of the strips.
- this reinforcing layer 8 is preferably applied because of the simplification of the manufacture of the shoe sole according to the invention, before the upper sole part 1 made of wood is cut to form the spaces which accommodate the intermediate pieces 6, it is expedient if this reinforcing layer is also at 8 ' extends over an area of approximately 1 cm over the adjacent part of the front upper sole part 4 and the rear upper sole part 5, since it is ensured in this case that in any case after the intermediate pieces 6 receiving the intermediate spaces 6, the underside of the strips 3 completely from the reinforcement layer 8 is covered.
- the reinforcing layer 8 can, however, also extend from the sole tip, over the entire underside of the front upper sole part.
- the reinforcement layer 8 is formed from at least one layer of wood veneer glued to the underside of the upper sole part.
- a single layer of this type is often sufficient. If several layers of wood veneer glued together are provided, these are preferably glued criss-cross with respect to their fiber longitudinal direction, so that a plywood is formed.
- the longitudinal direction of the fiber of the same should run transversely to the longitudinal direction of the fiber of the upper sole part 1 made of wood.
- plywood it is advantageous if at least the longitudinal direction of some of the wood veneer layers, and preferably the outer wood veneer layers, runs perpendicular to the longitudinal direction of the fiber of the upper sole part 1 made of wood.
- the reinforcement layer 8 can, however, also be made from a plastic film glued to the underside of the upper sole part 1 or from a hardenable plastic material applied to the underside of the upper sole part, for example by filling or spraying be educated. Finally, it is possible to form the reinforcement layer 8 from a preferably plastic-reinforced textile material attached to the underside of the upper sole part.
- This textile material can consist, for example, of a fleece which is impregnated with plastic material.
- Such a plastic material can be used, which softens when heat is applied, so that the reinforcing layer 8, which is partially made of a plastic material, can then be adapted to the shape of the underside of the upper sole part 1 and, after cooling, maintains this shape. Glass fibers are preferably used as the base material for the textile material.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
Die Erfindung betrifft eine Schuhsohle mit einem aus Holz bestehenden oberen Sohlenteil, dessen, vorzugsweise orthopädisch geformte, Oberseite die Auflage für die Fußsohle bildet, und einer unterhalb des oberen Sohlenteiles angeordneten Laufsohle aus elastischem und flexiblem Material, wobei der obere Sohlenteil zumindest im Ballenbereich in mehrere quer zur Sohlenlängsrichtung verlaufende Streifen unterteilt ist, die durch flexible Zwischenstücke, vorzugsweise aus an das Holz angeschäumtem Polyurethan, miteinander verbunden sind. Ferner betrifft die Erfindung ein Verfahren zur Herstellung einer solchen Schuhsohle.The invention relates to a shoe sole with an upper sole part made of wood, the upper, preferably orthopedically shaped, of which forms the support for the sole of the foot, and an outsole made of elastic and flexible material arranged below the upper sole part, the upper sole part being divided into several at least in the ball area is divided transversely to the longitudinal direction of the sole strip, which are connected to each other by flexible intermediate pieces, preferably made of polyurethane foamed onto the wood. The invention further relates to a method for producing such a shoe sole.
Schuhsohlen mit einem aus Holz bestehenden oberen Sohlenteil und mit einer an der Unterseite dieses oberen Sohlenteiles befestigten Laufsohle aus elastischem und flexiblem Material sind bereits seit langem bekannt. Derartige Schuhsohlen weisen den Vorteil auf, daß sie hervorragende tragehygienische Eigenschaften besitzen, da sie schweißsaugend und feuchtigkeitsregulierend sind, und daß sie den Fuß insbesondere dann, wenn die Oberseite des oberen Sohlenteiles orthopädisch geformt ist, in orthopädisch richtiger Weise abstützen. Nachteilig ist jedoch bei den Schuhsohlen, deren oberer Sohlenteil zur Gänze aus Holz besteht, deren Starrheit. Ein Abbiegen im Ballenbereich, wie es zum bequemen Gehen erforderlich ist, ist somit bei solchen Schuhsohlen nicht möglich.Shoe soles with an upper sole part made of wood and with an outer sole of elastic and flexible material attached to the underside of this upper sole part have been known for a long time. Such shoe soles have the advantage that they have excellent hygienic properties because they are sweat-wicking and moisture-regulating, and that they support the foot in an orthopedically correct manner, especially when the upper surface of the upper sole part is orthopedically shaped. However, the rigidity of the shoe soles, whose upper sole part consists entirely of wood, is disadvantageous. Bending in the ball area, as is necessary for walking comfortably, is therefore not possible with such shoe soles.
Um diesen Nachteil zu vermeiden, hat man bereits vorgeschlagen, den aus Holz bestehenden oberen Sohlenteil im Ballenbereich zu unterteilen und die einzelnen Teile durch ein flexibles Zwischenstück, vorzugsweise aus an das Holz angeschäumtem Polyurethan, miteinander zu verbinden. Aus der EP-A-398869 und aus der FR-A-996085 ist es bereits bekannt, ein aus Holz bestehendes Fußbett im Ballenbereich mehrmals durch Trennfugen zu unterteilen und in jeder dieser Trennfugen ein flexibles Zwischenstück aus einem elastischen Werkstoff vorzusehen, wobei die EP-A eine Ausführung offenbart, bei der die flexiblen Zwischenstücke von einer Platte ausgehen, die in einer Vertiefung an der Unterseite des Fußbettes aufgenommen ist. Die Anordnung mehrerer flexibler Zwischenstücke bringt den Vorteil einer besseren Biegbarkeit mit sich. In diesem Fall müssen aber die zwischen den flexiblen Zwischenstücken befindlichen Streifen in Sohlenlängsrichtung gesehen schmal sein, um alle elastischen Zwischenstücke im Ballenbereich unterbringen zu können. Die Faserlängsrichtung des Holzes verläuft bei Schuhsohlen üblicherweise in Sohlenlängsrichtung, die Unterteilung des oberen Sohlenteiles in Streifen erfolgt daher quer dazu. Sind nun die einzelnen Streifen schmal, so besteht die Gefahr, daß bei einer ungleichmäßigen Belastung derselben die Streifen entlang der Faserlängsrichtung des Holzes, somit quer zur Längsrichtung der Streifen, brechen. Eine solche ungleichmäßige Belastung tritt beispielsweise dann auf, wenn mit der Sohle unebene Flächen begangen werden. So können Steinchen, auf die man mit der Schuhsohle tritt, den Bruch eines oder mehrerer Streifen verursachen.In order to avoid this disadvantage, it has already been proposed to subdivide the upper sole part made of wood in the ball area and to connect the individual parts to one another by means of a flexible intermediate piece, preferably made of polyurethane foamed onto the wood. From EP-A-398869 and from FR-A-996085 it is already known to divide a wooden footbed in the ball area several times by parting lines and to provide a flexible intermediate piece made of an elastic material in each of these parting lines, the EP A discloses an embodiment in which the flexible intermediate pieces start from a plate which is received in a recess on the underside of the footbed. The arrangement of several flexible intermediate pieces has the advantage of better flexibility. In this case, however, the strips located between the flexible intermediate pieces must be narrow, as seen in the longitudinal direction of the sole, in order to be able to accommodate all the elastic intermediate pieces in the ball area. The longitudinal direction of the wood in shoe soles usually runs in the longitudinal direction of the sole, the division of the Upper part of the sole in strips is therefore transverse to it. If the individual strips are narrow, there is a risk that if the strips are loaded unevenly, the strips will break along the longitudinal direction of the wood, thus transverse to the longitudinal direction of the strips. Such an uneven load occurs, for example, when uneven surfaces are walked on with the sole. Stones that you step on with the sole of your shoe can cause one or more stripes to break.
Die vorliegende Erfindung hat sich zur Aufgabe gestellt, diesen Nachteil zu vermeiden und eine Schuhsohle zu bilden, bei welcher die Bruchgefahr der schmalen Streifen vermieden wird. Die erfindungsgemäße Lösung dieser Aufgabe besteht, ausgehend von einer Schuhsohle der eingangs beschriebenen Art, darin, daß zumindest im Bereich der Streifen die Unterseite des oberen Sohlenteiles mit einer Verstärkungsschicht flächig fest verbunden ist. Diese Verstärkungsschicht bewirkt infolge der flächigen festen Verbindung mit der Unterseite des oberen Sohlenteiles eine Verstärkung der Streifen quer zur Faserlängsrichtung des Holzes, wodurch die Bruchgefahr auch bei ungleichmäßiger Belastung der Sohle ausgeschaltet wird.The object of the present invention is to avoid this disadvantage and to form a shoe sole in which the risk of breakage of the narrow strips is avoided. The solution to this problem according to the invention, starting from a shoe sole of the type described at the outset, is that, at least in the area of the strips, the underside of the upper sole part is firmly connected to a surface with a reinforcing layer. As a result of the flat, firm connection to the underside of the upper sole part, this reinforcing layer reinforces the strips transversely to the longitudinal direction of the wood, thereby eliminating the risk of breakage even when the sole is loaded unevenly.
Gemäß einer bevorzugten Ausführungsform der Erfindung besteht die Verstärkungsschicht aus wenigstens einer an der Unterseite des oberen Sohlenteiles befestigten, vorzugsweise angeleimten, Schicht aus Holzfurnier. Häufig genügt zur Verstärkung eine einzige aus einem Holzfurnier bestehende Schicht. Fallweise ist es jedoch zweckmäßig, mehrere miteinander vorzugsweise durch Leimen verbundene Schichten vorzusehen, wobei dann, wenn eine Kreuz- und Querverleimung benachbarter Schichten hinsichtlich ihrer Längsfaserrichtung erfolgt, ein Sperrholz gebildet wird, welches dann die Verstärkungsschicht bildet. Die Verwendung einer solchen Holzfurnier bzw. eines solchen Sperrholzes weist den Vorteil auf, daß infolge der Gleichheit der Materialien sowohl für den oberen Sohlenteil als auch für die Verstärkungsschicht eine feste flächige Verbindung vorzugsweise mittels Leimens erzielt werden kann, welche für die Erzielung des angestrebten Effektes erforderlich ist.According to a preferred embodiment of the invention, the reinforcement layer consists of at least one, preferably glued, layer of wood veneer attached to the underside of the upper sole part. A single layer of wood veneer is often sufficient for reinforcement. In some cases, however, it is expedient to provide a plurality of layers which are preferably connected to one another by gluing, a plywood being formed when cross-gluing and cross-gluing adjacent layers with regard to their longitudinal fiber direction, which then forms the reinforcing layer. The use of such a wood veneer or of such a plywood has the advantage that, due to the similarity of the materials, both for the upper sole part and for the reinforcing layer, a firm two-dimensional connection can preferably be achieved by means of gluing, which is necessary for achieving the desired effect is.
Bei Verwendung einer Holzfurnier als Verstärkungsschicht ist es von Vorteil, wenn die Faserlängsrichtung zumindest einer der Schichten aus Holzfurnier senkrecht zur Faserlängsrichtung des aus Holz bestehenden oberen Sohlenteiles verläuft, da dann die Verstärkung der einzelnen Streifen vor allem in jener Richtung erfolgt, in der die Bruchgefahr gegeben ist. Wird eine einzige Schicht aus einer Holzfurnier vorgesehen, so ist die Faserlängsrichtung dieser einzigen Schicht senkrecht zur Faserlängsrichtung des aus Holz bestehenden oberen Sohlenteiles anzuordnen. Bei Verwendung von Sperrholz, das beispielsweise aus drei kreuz und quer verleimten Schichten aus einer Holzfurnier gebildet ist, ist es zweckmäßig, die Faserlängsrichtung der beiden äußeren Schichten senkrecht zur Faserlängsrichtung des aus Holz bestehenden oberen Sohlenteiles verlaufen zu lassen und die mittlere Schicht quer dazu.When using a wood veneer as a reinforcement layer, it is advantageous if the longitudinal direction of the fibers of at least one of the layers of wooden veneer runs perpendicular to the longitudinal direction of the fibers of the upper sole part made of wood, since the individual strips are then reinforced primarily in the direction in which the risk of breakage occurs given is. If a single layer of wood veneer is provided, the longitudinal fiber direction of this single layer is to be arranged perpendicular to the longitudinal fiber direction of the upper sole part made of wood. When using plywood, which is formed, for example, from three layers of cross-glued wood veneer, it is advisable to have the fiber longitudinal direction of the two outer layers perpendicular to the fiber longitudinal direction of the upper sole part made of wood and the middle layer transverse to it.
Es kann aber auch die Verstärkungsschicht aus einem an der Unterseite des oberen Sohlenteiles befestigten flächigen Kunststoffteil bestehen. Im einfachsten Fall ist hiebei die Verstärkungsschicht von einer an der Unterseite des oberen Sohlenteiles angeklebten Kunststoffolie gebildet. Es kann aber auch an der Unterseite des oberen Sohlenteiles ein aushärtbares, aber noch nicht ausgehärtetes Kunststoffmaterial, beispielsweise durch Aufspritzen oder Aufspachteln, aufgetragen werden, das nach dem Aushärten die Verstärkungsschicht bildet.However, the reinforcement layer can also consist of a flat plastic part attached to the underside of the upper sole part. In the simplest case, the reinforcement layer is formed by a plastic film glued to the underside of the upper sole part. However, a curable but not yet hardened plastic material, for example by spraying or filling, can also be applied to the underside of the upper sole part, which forms the reinforcing layer after hardening.
Die Verstärkungsschicht kann sich auch über jenen Bereich der Unterseite des oberen Sohlenteiles erstrecken, in dem die Zwischenstücke angeordnet sind. Zweckmäßig ist es jedoch, wenn die von den Zwischenstücken gebildete Fläche der Unterseite des oberen Sohlenteiles von der Verstärkungsschicht freigehalten ist. In diesem Fall können nämlich, wie dies insbesondere für eine einfache Herstellungsweise der erfindungsgemäßen Sohle zweckmäßig ist, die Zwischenstücke und die Laufsohle einstückig ausgebildet sein, da dann die Verstärkungsschicht keine Trennung zwischen den Zwischenstücken und der Laufsohle bildet.The reinforcement layer can also extend over that area of the underside of the upper sole part in which the intermediate pieces are arranged. However, it is expedient if the surface of the underside of the upper sole part formed by the intermediate pieces is kept free from the reinforcing layer. In this case, as is particularly expedient for a simple method of manufacturing the sole according to the invention, the intermediate pieces and the outsole can be formed in one piece, since the reinforcing layer then does not form a separation between the intermediate pieces and the outsole.
Das erfindungsgemäße Verfahren zur Herstellung der beschriebenen Schuhsohle besteht im wesentlichen darin, daß, nachdem mit der Unterseite eines den oberen Sohlenteil bildenden Holzstückes, zumindest im Ballenbereich, eine Verstärkungsschicht, vorzugsweise durch Kleben oder Leimen, flächig fest verbunden wird, an dieser Unterseite im Ballenbereich mehrere Einschnitte, beispielsweise durch Fräsen, hergestellt werden, durch welche die Verstärkungsschicht vollständig und das den oberen Sohlenteil bildende Holzstück zumindest teilweise durchtrennt werden, daß hierauf dieses Holzstück, mit den damit fest verbundenen Verstärkungsschichtabschnitten in eine Form eingelegt wird, daß hierauf in die Form ein flüssiges Kunststoffmaterial, eingebracht und verfestigen gelassen wird, wobei im Bereich der Einschnitte die Zwischenstücke und die damit einstückig ausgebildete Laufsohle gebildet werden, und daß schließlich der so hergestellte Sohlenteil entformt wird. Das den oberen Sohlenteil bildende Holzstück muß hiebei nicht schon die exakte Form des oberen Sohlenteiles aufweisen, sondern kann auch größer sein, insbesondere eine größere Dicke, gemessen senkrecht zur Sohlenoberseite, aufweisen. In diesem Fall ist es nämlich möglich, das den oberen Sohlenteil bildende Holzstück nicht vollständig zu durchtrennen, sondern es kann an der Oberseite desselben noch eine Verbindung erhalten bleiben, wodurch das Einlegen in die Form wesentlich erleichtert wird. Gemäß einem weiteren Merkmal des erfindungsgemäßen Verfahrens wird nach dem Entformen zumindest die Oberseite des den oberen Sohlenteil bildenden Holzstückes, vorzugsweise durch Fräsen oder Schleifen, materialabhebend bearbeitet, wodurch nicht nur die orthopädische Formgebung dieser Oberseite erzielt werden kann, sondern auch jener Bereich abgetragen wird, in dem noch eine Verbindung des den oberen Sohlenteil bildenden Holzstückes vorhanden ist, und dadurch die Zwischenstücke bis zur Oberseite des oberen Sohlenteiles reichen.The method according to the invention for producing the shoe sole described essentially consists in that after a reinforcing layer has been firmly connected to the underside of a piece of wood forming the upper sole part, at least in the ball area, preferably by gluing or gluing, several on this underside in the ball area Incisions are made, for example by milling, through which the reinforcing layer is completely cut and the piece of wood forming the upper sole part is at least partially cut, that this piece of wood, with the reinforcing layer sections firmly connected to it, is inserted into a mold so that a liquid is then poured into the mold Plastic material, introduced and allowed to solidify, whereby in the region of the incisions, the intermediate pieces and the outsole formed therewith in one piece are formed, and that the sole part thus produced is finally removed from the mold. The piece of wood forming the upper sole part does not have to have the exact shape of the upper sole part, but can also be larger, in particular have a greater thickness, measured perpendicular to the upper side of the sole. In this case, it is in fact possible not to completely cut through the piece of wood forming the upper sole part, but a connection can still be maintained on the upper side thereof, which considerably simplifies insertion into the mold. According to a further feature of the method according to the invention, at least the upper side of the wooden piece forming the upper sole part is processed in a material-lifting manner, preferably by milling or grinding, whereby not only the orthopedic shape of this upper side can be achieved, but also that area is removed in which is still a connection of the wooden piece forming the upper sole part, and thereby the intermediate pieces extend to the top of the upper sole part.
In der Zeichnung ist die erfindungsgemäße Schuhsohle anhand eines Ausführungsbeispieles schematisch erläutert. Fig.1 zeigt eine Draufsicht auf die erfindungsgemäße Schuhsohle und Fig.2 stellt einen Schnitt nach der Linie II - II in Fig.1 dar.In the drawing, the shoe sole according to the invention is schematically explained using an exemplary embodiment. 1 shows a plan view of the shoe sole according to the invention and FIG. 2 shows a section along the line II-II in FIG. 1.
Die erfindungsgemäße Schuhsohle weist einen aus Holz bestehenden oberen Sohlenteil 1 auf, dessen orthopädisch geformte Oberseite 2 die Auflage für die Fußsohle bildet. Im Ballenbereich ist der obere Sohlenteil 1 in mehrere quer zur Sohlenlängsrichtung verlaufende Streifen 3 unterteilt, die untereinander und mit den benachbarten Abschnitten 4, 5 durch flexible Zwischenstücke 6 verbunden sind. Die flexiblen Zwischenstücke 6 bestehen vorzugsweise aus Polyurethan, welches an die aus Holz bestehenden Teile 3, 4, 5 angeschäumt ist, wodurch eine dauerhafte Verbindung zwischen den Holzteilen und den flexiblen Zwischenstücken 6 hergestellt wird.The shoe sole according to the invention has an upper
Unterhalb des oberen Sohlenteiles 1 befindet sich eine Laufsohle 7 aus elastischem und flexiblem Material, die einstückig mit den Zwischenstücken 6 ausgebildet und vorzugsweise gleichfalls aus an das Holz angeschäumtem Polyurethan besteht.Below the upper
Da die Biegbarkeit der Sohle im Ballenbereich gegeben sein muß, müssen die Streifen 3 zumindest im Ballenbereich angeordnet sein. Die Streifen 3 sind daher, wie auch aus der Zeichnung ersichtlich ist, in Sohlenlängsrichtung gesehen schmal. Da bei Holzsohlen üblicherweise auch die Längsfaser in Sohlenlängsrichtung verläuft, besteht bei ungleichmäßiger Belastung der Sohle, wie sie beispielsweise beim Gehen auf unebenem Untergrund auftritt, die Gefahr, daß die Streifen entlang einer Längsfaser brechen. Um dieser Gefahr zu begegnen, ist an der Unterseite der Streifen eine Verstärkungsschicht 8 mit den Streifen fest und flächig verbunden. Da diese Verstärkungsschicht 8 wegen der Vereinfachung der Herstellung der erfindungsgemäßen Schuhsohle vorzugsweise angebracht wird, bevor der aus Holz bestehende obere Sohlenteil 1 zur Bildung der Zwischenräume, welche die Zwischenstücke 6 aufnehmen, durchtrennt wird, ist es zweckmäßig, wenn sich diese Verstärkungsschicht bei 8' auch über einen Bereich von zirka 1 cm über den angrenzenden Teil des vorderen oberen Sohlenteiles 4 und des hinteren oberen Sohlenteiles 5 erstreckt, da in diesem Fall sichergestellt ist, daß in jedem Fall nach Herstellung der die Zwischenstücke 6 aufnehmenden Zwischenräume die Unterseite der Streifen 3 vollständig von der Verstärkungsschicht 8 bedeckt ist. Die Verstärkungsschicht 8 kann sich aber auch, von der Sohlenspitze ausgehend, über die gesamte Unterseite des vorderen oberen Sohlenteiles erstrecken.Since the bendability of the sole must be given in the ball area, the
Bei einer besonders vorteilhaften Ausführungsform ist die Verstärkungsschicht 8 aus wenigstens einer an der Unterseite des oberen Sohlenteiles angeleimten Schicht aus Holzfurnier gebildet. Häufig genügt eine einzige solche Schicht. Werden mehrere miteinander verleimte Schichten aus einer Holzfurnier vorgesehen, so sind diese hinsichtlich ihrer Faserlängsrichtung vorzugsweise kreuz und quer verleimt, sodaß ein Sperrholz gebildet wird. Bei Verwendung einer einzigen Schicht aus einer Holzfurnier soll die Faserlängsrichtung derselben quer zur Faserlängsrichtung des oberen aus Holz bestehenden Sohlenteiles 1 verlaufen. Bei Verwendung von Sperrholz ist es von Vorteil, wenn zumindest die Faserlängsrichtung einiger der Holzfurnierschichten, und zwar vorzugsweise der äußeren Holzfurnierschichten, senkrecht zur Faserlängsrichtung des oberen aus Holz bestehenden Sohlenteiles 1 verläuft.In a particularly advantageous embodiment, the
Die Verstärkungsschicht 8 kann aber auch von einer an die Unterseite des oberen Sohlenteiles 1 angeklebten Kunststoffolie oder aus einem an der Unterseite des oberen Sohlenteiles beispielsweise durch Aufspachteln oder Aufspritzen aufgebrachten aushärtbaren Kunststoffmaterial gebildet sein. Schließlich ist es möglich, die Verstärkungsschicht 8 aus einem an der Unterseite des oberen Sohlenteiles befestigten, vorzugsweise kunststoffverstärkten Textilmaterial zu bilden. Dieses Textilmaterial kann beispielsweise aus einem Vlies bestehen, welches mit Kunststoffmaterial getränkt ist. Es kann hiebei ein solches Kunststoffmaterial Verwendung finden, welches sich bei Wärmezufuhr erweicht, sodaß sich dann die teilweise aus einem Kunststoffmaterial bestehende Verstärkungsschicht 8 der Form der Unterseite des oberen Sohlenteiles 1 anpassen läßt und nach Abkühlen diese Form beibehält. Als Grundstoff für das Textilmaterial kommen vorzugsweise Glasfasern in Frage.The
Bei der Herstellung der erfindungsgemäßen Sohle wird zweckmäßig von einem Holzstück ausgegangen, dessen Dicke, senkrecht zur Oberseite des oberen Sohlenteiles 1 gemessen, größer ist als die Dicke des oberen Sohlenteiles der fertiggestellten Sohle. Nach Herstellung der flächigen festen Verbindung zwischen der Verstärkungsschicht 8 und diesem Holzstück wird dort, wo die Zwischenstücke angeordnet sind, das Holzstück mit der damit verbundenen Verstärkungsschicht 8, von dieser Verstärkungsschicht ausgehend, nur teilweise durchtrennt, sodaß an der der Verstärkungsschicht gegenüberliegenden Seite eine Verbindung des Holzstückes bestehen bleibt. Dadurch wird das Einlegen in eine Form erleichtert, in der durch Einbringen eines elastischen und flexiblen Materiales die Zwischenstücke 6 und die Laufsohle 7 angeformt werden. Nach dem Entformen wird der in Fig. 2 strichliert eingezeichnete Teil 9 im Bereich der Oberseite 2 des oberen Sohlenteiles 1 durch Fräsen oder Schleifen entfernt, sodaß dann die Zwischenstücke 6 bis zur Oberseite 2 reichen und die erforderliche Biegbarkeit gegeben ist. Wenngleich in Fig.2 eine Ausführung dargestellt ist, bei welcher nach dem Entformen die gesamte Oberseite 2 des oberen Sohlenteiles 1 bearbeitet wird, ist es auch möglich, den hinteren Teil der Oberseite des oberen Sohlenteiles 1 bereits die endgültige Formgebung zu verleihen und lediglich den vorderen Teil der Oberseite 2 des oberen Sohlenteiles 1 nach dem Entformen zu bearbeiten und dadurch jenen Teil des Holzes zu entfernen, durch den die Zwischenstücke 6 abgedeckt sind.In the manufacture of the sole according to the invention, it is expedient to start from a piece of wood, the thickness of which, measured perpendicular to the upper side of the upper
Claims (10)
- A shoe sole having a wooden upper sole-part (1) whose, preferably orthopaedically shaped, upper side (2) forms the support for the sole of the foot, and having an outsole (7) which is arranged below the upper sole-part (1) and is made of a resilient and flexible material, the upper sole-part (1) being divided, in the region of the ball of the foot at least, into a plurality of strips (3) which run transversely to the longitudinal direction of the sole and are connected to one another by means of flexible intermediate pieces (6) preferably made of polyurethane expanded onto the wood, characterised in that the lower side of the upper sole-part (1) is, in the region of the strips (3) at least, securely connected in a surface-to-surface manner to a reinforcing layer (8).
- A shoe sole in accordance with Claim 1, characterised in that the reinforcing layer (8) is composed of at least one layer of wood veneer secured to the lower side of the upper sole-part (1), preferably glued thereto.
- A shoe sole in accordance with Claim 1 and 2, characterised in that the grain longitudinal direction of at least one of the layers of wood veneer runs perpendicularly to the grain longitudinal direction of the wooden upper sole-part (1).
- A shoe sole in accordance with Claim 1, characterised in that the reinforcing layer (8) is composed of a plane plastics part secured to the lower side of the upper sole-part (1), for example of a glued-on plastics sheet or of an applied hardenable plastics material.
- A shoe sole in accordance with Claim 1, characterised in that the reinforcing layer (8) is composed of a textile material, preferably plastics-reinforced, secured to the lower side of the upper sole-part (1).
- A shoe sole in accordance with any one of Claims 1 to 5, characterised in that the zone of the lower side of the upper sole-part (1) which is formed by the intermediate pieces (6) is kept free from the reinforcing layer (8).
- A method of manufacturing a shoe sole in accordance with any one of Claims 1 to 6, characterised in that after a reinforcing layer (8) has, in the region of the ball of the foot at least, been securely connected in a surface-to-surface manner to the lower side of a piece of wood forming the upper sole-part (1), preferably by gluing, a plurality of notches are, in the region of the ball of the foot, produced in this lower side, for example by milling, these notches completely dividing the reinforcing layer (8) and at least partially dividing the piece of wood which forms the upper sole-part (1), in that then this piece of wood together with the reinforcing-layer portions connected thereto is inserted into a mould, in that then a fluid plastics material is introduced into the mould and allowed to solidify, the intermediate pieces (6) and the outsole (7) in one piece with these pieces (6) being formed in the region of the notches, and in that finally the sole part produced in this manner is removed from the mould.
- A method in accordance with Claim 7, characterised in that a polyurethane-forming material is introduced into the mould.
- A method in accordance with Claim 7, characterised in that the fluid plastics material is made to expand.
- A method in accordance with Claim 7, characterised in that after removal from the mould, at least the upper side of the piece of wood forming the upper sole-part (1) is processed in a material-removing manner, preferably milled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94112614A EP0628263B1 (en) | 1990-12-28 | 1991-12-23 | Shoesole and method of making the same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0264590A AT398511B (en) | 1990-12-28 | 1990-12-28 | SHOE SOLE |
| AT2645/90 | 1990-12-28 | ||
| PCT/AT1991/000140 WO1992011779A1 (en) | 1990-12-28 | 1991-12-23 | Shoe sole and process for making it |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94112614.6 Division-Into | 1994-08-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0564525A1 EP0564525A1 (en) | 1993-10-13 |
| EP0564525B1 true EP0564525B1 (en) | 1995-10-25 |
Family
ID=3537985
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92901794A Expired - Lifetime EP0564525B1 (en) | 1990-12-28 | 1991-12-23 | Shoe sole and process for making it |
| EP94112614A Expired - Lifetime EP0628263B1 (en) | 1990-12-28 | 1991-12-23 | Shoesole and method of making the same |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94112614A Expired - Lifetime EP0628263B1 (en) | 1990-12-28 | 1991-12-23 | Shoesole and method of making the same |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5592755A (en) |
| EP (2) | EP0564525B1 (en) |
| AT (3) | AT398511B (en) |
| DE (2) | DE59108238D1 (en) |
| DK (2) | DK0564525T3 (en) |
| ES (1) | ES2081089T3 (en) |
| WO (1) | WO1992011779A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5926975A (en) * | 1997-03-17 | 1999-07-27 | Goodman; Michael C. | Hinged shoe sole assembly for working boots |
| EP1258202A1 (en) * | 2001-05-15 | 2002-11-20 | Chuan-Yan Song | Outsole of shoes |
| EP3485756B1 (en) * | 2017-11-17 | 2020-06-17 | Intral d.o.o. | Footbed for a shoe and shoe with such footbed |
| IT201900016331A1 (en) | 2019-09-13 | 2021-03-13 | Made S R L | METHOD FOR MAKING A FOOTWEAR AND FOOTWEAR STRUCTURE OBTAINED WITH THIS METHOD |
| JP2023538787A (en) * | 2020-08-31 | 2023-09-11 | プーマ エス イー | Footwear made from industrial wood |
| US20230309649A1 (en) * | 2022-03-31 | 2023-10-05 | RCCI Group, Inc. | Footwear |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE308713C (en) * | ||||
| US694872A (en) * | 1901-07-30 | 1902-03-04 | Benjamin E Lockett | Shoe or boot. |
| US2508392A (en) * | 1942-11-09 | 1950-05-23 | Raoul M L Issaly | Wooden sole for shoes |
| US2394704A (en) * | 1943-10-06 | 1946-02-12 | United Last Company | Manufacture of wooden soles |
| FR996085A (en) * | 1945-04-23 | 1951-12-12 | Flexible composite sole of galoche type | |
| AT352585B (en) * | 1976-07-20 | 1979-09-25 | Johann Ehrlich Holz Und Kunsts | WOOD SOLE FOR SHOES AND METHOD FOR THE PRODUCTION THEREOF |
| US4030155A (en) * | 1976-08-24 | 1977-06-21 | Jacques Azadian | Clog sole |
| SE7901989L (en) * | 1979-03-06 | 1980-09-07 | Stiftelsen Blekinge Prod | FOOTWEAR |
| AT373128B (en) * | 1979-09-28 | 1983-12-27 | Distropat Ag | SOLE FOR SHOES AND METHOD FOR PRODUCING THE SOLE |
| CA1118594A (en) * | 1981-05-22 | 1982-02-23 | Henry D. Sweeny | Protective mid-sole for footwear |
| AT378898B (en) * | 1984-03-05 | 1985-10-10 | Alemania Schuhbedarf | METHOD FOR PRODUCING SHOE SOLE AND MOLD FOR CARRYING OUT THIS METHOD |
| IT1181565B (en) * | 1984-08-01 | 1987-09-30 | Pietro Luciano Rigon | PROCEDURE FOR MAKING A FLEXIBLE ANATOMIC WOOD SOLE FOR FOOTWEAR AND FLEXIBLE SOLE OBTAINED BY SUCH PROCEDURE |
| SI8610391A8 (en) * | 1986-03-14 | 1996-02-29 | Kopitarna Sevnica D O O | Special sole for wooden shoes with elastic element, process and apparatus for making it |
| AT398025B (en) * | 1989-05-18 | 1994-08-25 | Piroutz Gerhard | SHOE |
| WO1990015549A1 (en) * | 1989-06-12 | 1990-12-27 | Smittis Schuhvertriebsgesellschaft M.B.H. | Shoe sole and process for manufacturing it |
-
1990
- 1990-12-28 AT AT0264590A patent/AT398511B/en not_active IP Right Cessation
-
1991
- 1991-12-23 ES ES92901794T patent/ES2081089T3/en not_active Expired - Lifetime
- 1991-12-23 DE DE59108238T patent/DE59108238D1/en not_active Expired - Fee Related
- 1991-12-23 DK DK92901794.5T patent/DK0564525T3/en not_active Application Discontinuation
- 1991-12-23 AT AT94112614T patent/ATE143225T1/en not_active IP Right Cessation
- 1991-12-23 US US08/078,262 patent/US5592755A/en not_active Expired - Fee Related
- 1991-12-23 DK DK94112614.6T patent/DK0628263T3/en active
- 1991-12-23 DE DE59106784T patent/DE59106784D1/en not_active Expired - Fee Related
- 1991-12-23 EP EP92901794A patent/EP0564525B1/en not_active Expired - Lifetime
- 1991-12-23 WO PCT/AT1991/000140 patent/WO1992011779A1/en active IP Right Grant
- 1991-12-23 EP EP94112614A patent/EP0628263B1/en not_active Expired - Lifetime
- 1991-12-23 AT AT92901794T patent/ATE129385T1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2081089T3 (en) | 1996-02-16 |
| US5592755A (en) | 1997-01-14 |
| WO1992011779A1 (en) | 1992-07-23 |
| EP0564525A1 (en) | 1993-10-13 |
| DK0628263T3 (en) | 1997-03-17 |
| DE59106784D1 (en) | 1995-11-30 |
| ATE129385T1 (en) | 1995-11-15 |
| DK0564525T3 (en) | 1996-03-04 |
| ATE143225T1 (en) | 1996-10-15 |
| ATA264590A (en) | 1994-05-15 |
| DE59108238D1 (en) | 1996-10-31 |
| EP0628263B1 (en) | 1996-09-25 |
| EP0628263A1 (en) | 1994-12-14 |
| AT398511B (en) | 1994-12-27 |
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