Insert for a shoe

description

The present invention relates to a shoe insole, especially a sports shoe, which extends at least in the forefoot, preferably throughout the foot, of the sole. Furthermore, the present invention relates to a sole provided with such an insole and a shoe having such a sole.

In shoes in general, and in particular in sports shoes, such as for light athletic shoes, climber's shoes, golf shoes or the like, it is important to shape the shoe in such a way that it is small and in no way small. engrave the danger of twisting the foot to the side and thus the danger that tendon tears or tears may occur. This danger of twisting the foot to the side is greater the greater the momentum of the lately directed tilt torque acting on the foot and, on the other hand, the lower the resistance of the shoe against this torque. These two factors, namely the moment of tipping torque, on the one hand, and the resistance of the shoe against the tipping torque, on the other hand, apart from external conditions, are mainly due to the structure of the shoe:

1) Firstly, the momentum of the tilt torque is greater the higher the side force components, ie the tilt forces acting on the foot. This tipping force is given prepondeANA

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teeth, which in particular in the practice of certain types of sport are very pronounced, which is why ligaments rupture and distension are very common in sport.

2) moreover, the tilt torque is higher the higher the physically speaking tilt arm lever arm, i.e. the farther the foot is from the ground. This means that the moment of tipping torque is, as in other circumstances, the greater the thicker the sole of the shoe.

3) whether or not a given moment of tipping torque can actually cause tipping and therefore a twist of the foot to the side, however, depends not only on the absolute value of the moment of tipping torque but also on the resilient moment that the shoe may oppose lateral tilt. This resistant moment is greater the more stable the shoe sole is laterally, that is, the larger the lever arm that the sole opposes to a flexion in the transverse direction of the sole, which means a flexion around a line of the sole. bending parallel or more or less parallel to the longitudinal direction of the sole.

If one considers the above factors, then the ideal shoe sole to make the danger of twisting one foot to the side as small as possible would be a very thin and rigid shoe sole, since if the shoe sole is too slim, This results in the lowest possible tilt torque, and when the sole of the shoe is very rigid, the highest possible torque is resisted against the actual lateral tilt torque. But such a shoe sole is by no means ideal because there are still other requirements that the characteristics of a shoe must meet.

In fact, a person wearing such a shoe with a thin and rigid sole can keep well and safely on a smooth floor, that is, such a frog would give its wearer good stability on a regular floor, but only badly and poorly. unsafe

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it could run and would not have good stability on uneven ground, as the rigid sole of such a shoe would not adapt to uneven ground and would make a rolling movement of the sole of the shoe impossible during ground walking. To make it possible for the person wearing the shoe to run well and safely on the ground, with a correct rolling movement of the shoe sole, the shoe sole needs to be soft and flexible. This requirement for the sole of the shoe not to be rigid but rather soft and flexible brings with it, however, for the following reasons, another requirement which is that the sole of the shoe should not be made thin, as it would be desirable to according to the above considerations to lessen the danger of a sprain, but should be made thick.

In particular, if a soft, flexible shoe sole is thin, then point-to-bottom pressure acting on the sole of the shoe, due for example to stones, irregularity of other bodies or the like, would be transmitted to the sole of the wearer, which of course was extraordinarily uncomfortable and even unbearable. In order to reduce these spot pressures as much as possible on the user's sole and if possible to eliminate them even, it is therefore necessary that the soft and flexible shoe sole required for good rolling motion be made thick.

Therefore, as regards the construction of the sole of the shoe, there are two conflicting requirements:

(a) On the one hand, the sole must, in order to minimize the danger of the lateral sprain and therefore the danger of tendon rupture and distention, be as thin and rigid as possible.

(b) On the other hand, the sole must, in order to enable correct rolling motion during running and good stability on uneven ground and to prevent the transmission of spot pressure from the ground, be as soft, flexible and coarse as possible.

According to the prior art, shoe soles are indeed known to have a reinforcing insole but

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Proposals for the use of such known reinforcing insoles are not based on the objective of providing a shoe sole to meet the above two fundamental requirements, or these insoles do not solve the problem in question:

GB-A-1 257 524 discloses a metal or plastic spike reinforcing insole which is embedded in the sole of the shoe and is especially suited for golf shoes. The object of this stiffening insole is to solve the problem of spike attachment and isolation of the spike pressure when lighter, softer, more flexible, cell-type materials are used for the soles. In addition, these sole materials are intended to prevent uncontrolled bending of the shoe, in particular uncontrolled twisting of the middle, in order to avoid decreased foot comfort and premature deformation of the upper part of the shoe. The solution to this problem is, in so far as it is of interest here, that the generally flat insole extends the entire length of the shoe sole and all the forefoot spikes are fixed thereon, forming the spikes on the insole slightly pits. This reinforced insole not only achieves the desired transverse reinforcement in the front of the sole of the shoe, but also the front of the foot is also simultaneously rigid in the longitudinal direction of the sole, so that undesirable movement of the sole is difficult. rolling of the sole of the shoe in the race.

US-A-4,439,937 discloses a metal reinforcing insole extending from the mid-front of the back of the shoe sole to the rear end of the heel zone and having the function of to form a support in the area of ​​the joint and instep. The front part of the front of the foot of the sole of the shoe is on the contrary expressly released from the reinforcing insole so that it is vertically flexible, as is necessary for a good rolling movement, which however has the inconvenient consequence that There is little lateral stability here.

Finally it is known from the European patent application

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Cracked, elastic and soft, with a hard and elastic, safe-moving insole, for example of steel plate, which is mainly intended for safety shoes in construction, which should provide security against the penetration of nails through the sole of the shoe. The reinforcing insole in the embodiment of interest extends substantially the entire length of the shoe sole and is formed and inserted into the shoe sole such that the toe area for support of a shoe cover. toe and the hinge area to support the foot joint rest directly under the second sole of the shoe, whereas, on the contrary, the remaining part of the forefoot and heel area of ​​this insole are reduced so that they can be continuously covered with a layer of soft, elastic material from the sole to provide greater foot comfort in the football area and heel compared to the use of a reinforcing insole that extends completely under the second sole. These reduced zones of the reinforcing insole are formed such that the material of the insole in transition from the raised to the reduced zone is progressively curved along flexion lines perpendicular to the longitudinal axis of the sole. These flexion lines do not, however, substantially alter the stiffness characteristics of the insole, so that the insole causes the sole to be reinforced to about the same degree in the transverse and longitudinal direction, thereby hindering the rolling movement of the sole of the sole. as the transverse stiffness is increased.

On the contrary, the object of the present invention is, in particular, to provide a shoe-making insole in which the danger of a lateral sprain is as small as possible and therefore the danger of ligament ruptures and distension while allowing a Rolling movement, remarkably adapted to the running, of the sole of the shoe, with optimum stability.

It is furthermore intended to provide with the present invention a shoe sole and a shoe, in particular a shoe for

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This problem is solved with an insole extending at least in the front of the foot, preferably throughout the sole according to the present invention if the insole at least in the front of the foot is flexurally resistant in the transverse direction of the sole. especially in the rolling area but on the contrary is vertically flexible in the longitudinal direction of the sole.

A sole according to the present invention for a shoe is characterized by an insole according to the present invention which is preferably rigidly attached to the sole, more specifically by foaming, injection, casting or any other wrapping or vulcanizing process in a material. plastic that forms at least a part of the sole or the entire sole.

Finally, the present invention provides a shoe having a sole according to the present invention, which has an insole according to the present invention.

A particularly preferred embodiment of the insole according to the present invention is characterized in that it extends substantially the entire length of the sole and, in the longitudinal direction of the sole, is easily twisted from the heel to the thumb. Such an insole makes the foot-rolling movements possible, for example in many types of light sport, for example golf, tennis and the like.

Furthermore, the insole according to the present invention is particularly preferably formed of resilient elastic such that the sole of the shoe substantially always returns to its original position by itself.

Finally, the insole according to the present invention is, in its particularly preferred configuration, formed pressure resistant perpendicular to the sole plane, which is particularly important because thus the transmitted point tread pressures are distributed over the entire surface of the insole. so that the pressures of small stones, of irregularity6

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trities of the floor and the like are not transmitted on time to the sole of the foot.

A particularly preferred and largely workable embodiment of the insole according to the present invention, which has all the advantageous features mentioned above, is characterized in that the insole, preferably in one piece, is made of a hard plate material. and elastic, and at least in the forefoot area, preferably throughout the sole, have transverse profiles arranged transversely, preferably perpendicularly, to the longitudinal direction of the sole, which preferably extend over the entire width of the sole, the material being in the form of hard and elastic plate preferably a metal and / or plastic plate material, preferably steel plate, particularly preferably spring steel plate.

Such an insole according to the present invention, which is suitable for the manufacture of soles and shoes, has in particular the following characteristics:

1) high lateral stability, since the insole transverse profile gives high flexural strength in the direction of the profile, i.e. in the transverse direction of the sole, more specifically in the respective rolling zone;

2) very good vertical flexibility in the longitudinal direction of the sole, especially in rolling motion, since the insole cross profile gives a high flexural flexibility perpendicular to the direction of the profile and perpendicular to the plane in which the profile extends;

3) great susceptibility to twisting around the longitudinal direction of the sole from the heel to the big toe, since the transverse profile makes it possible to twist the individual profiles relative to each other about an axis perpendicular to the individual profiles and extends through the common plan of the profiles;

4) good pressure distribution due to the pressure resistance of the hard material in the form of a plate of which the insole, for example steel, is made, as this material

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hard-plate distributes point-to-bottom pressure acting across the surface of the insole;

5) Remarkable resilience, since the elastic plate-shaped material, due to its elasticity characteristics, restores to its initial position, so that a shoe sole provided with the insole according to the present invention always takes over again. your starting position.

The high lateral stability of the insole according to the present invention in connection with the good pressure distribution makes it possible for a very flat construction of the insole provided with the sole of the shoe, i.e. the manufacture of thin soles without substantial tipping effect, since the tilt torque is as small as possible due to the small thickness of the sole and the torsional torque against tilting due to the high lateral stability is as large as possible, resulting in high foot comfort at the same time, as point pressures from the floor are not transmitted punctually to the sole of the foot and a rolling movement of the foot is possible during running and, moreover, sufficiently to adapt to floor irregularities, a thin layer of soft and elastic sole material on the underside of the insole (high carrying capacity).

Experiments have shown that such a spring steel insole according to the present invention can withstand shape stability of at least 5 million alternate flexions, which means that the insole remains stable and functional for about 650 golf tournaments.

An insole formed as a one-piece profiled plate, in particular with a sole-shaped contour, can on the one hand be made rationally and inexpensively and on the other hand can also be rationally and cost-effectively. be integrated into the sole of a shoe. These advantages also largely result when the insole according to the present invention is made of a multilayer composite material consisting of layers of different materials, for example metal and plastic. In this case the insole may consist of

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different strip-like areas in the transverse direction of the sole, pivotally and elasticly joined together by the plastic layer.

The torsion capacity of the insole from the heel to the big toe may, if desired, be further increased if the insole has, instead of the transverse profiles in the foot joint and / or in the heel area, a longitudinal profile arranged in the longitudinal direction of the sole. Such a longitudinal profile is, in the area of ​​the foot joint, moreover advantageous for the foot joint support.

Although, as already mentioned, it is preferred to form the insole such that it extends substantially over the entire surface of the sole, it may in many cases suffice for the insole to extend substantially the full width and / or substantially the entire length. from the front of the foot, as this will achieve most of the above advantages.

The hard and elastic plate-shaped material may have a thickness between 0.1 mm and 1.5 mm, preferably between 0.3 mm and 0.8 mm.

The transverse or longitudinal profiles may, in particular in cross-section, be in the form of flutes, ridges, gutters, undulations, grooves or crowns, preferably meanders, trapezes, zigzags or the like. meander-like shapes.

By the direction of the profiles here is meant the direction in which those profiles are rolled, drawn, molded or the like, that is, for example in the case of a profile with a fluted cross-section, the longitudinal direction of an individual flute. .

Preferably, the width of the periodically repeating cross-section members has a value of 3 mm to 20 mm, preferably from 6 mm to 16 mm, more preferably from 8 mm to 13 mm.

To further enhance the ability of the insole to be attached to a sole, although the insole according to the present invention has a 9 -

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Due to their profiles, they already have a remarkable clamping capacity and therefore in the vast majority of cases there is no need to increase them, it is possible to form the profiles in such a way that in their direction of the profile they are formed corrugated, toothed, grooved, grooved or fluted or having a secondary profile extending transversely of the direction of the profiles.

In order for foot pressure to be transmitted even better to the ground, the insole may, in particular when formed as a one-piece plate, present in a predetermined area of ​​the foot or in several predetermined areas of the foot, more specifically. preferably in the area of ​​the big toe, sole and / or heel, a ground-oriented cavity having such a cavity so that it performs particularly well the above-mentioned function, preferably a flat or flat bottom.

In order that the plastic material, when applied by foaming or other similar process, can be distributed correctly on both sides of the insole, it may be provided with through holes for the plastic material, which are distributed on the surface of the insole. preferably with one or more injection channels for injecting the plastics material therethrough and / or with a number or a large number of through openings, which may in particular be interruptions.

The insole according to the present invention surprisingly permits to be placed on the same protrusions or spikes not detachable or to be fixed by means of securing means provided on or within the insole removable. This virtually excludes all retention and attachment problems that arise when placing protrusions or spikes on a normal sole.

In particular, said securing means may be threaded holes provided in the insole or threaded inserts disposed in the insole. Particularly stable placement, especially directionally stable, of the protrusions or spikes in the insole can be achieved by the present invention by securing the lower parts of the protrusions or spikes or the securing means, for example threaded inserts, to insole recesses and resting on the sidewalls of the recesses, preferably with shape fitting with the adjacent sidewalls of the recesses, placed and / or rigidly fixed to these side walls, these cavities preferably being profiled cavities formed with transverse and / or longitudinal profiles. The spikes may also be otherwise fixed, for example by riveting or welding.

The insole according to the present invention may also be composed of a composite plate material having several layers joined together to form an integrated structure, one of these layers having at least transverse profiles, preferably consisting of profiles. Such a composite structure allows the advantages of various materials to be combined.

Thus, for example, the composite plate material may have a first layer consisting of a preferably non-profiled flexible elastic plate material and a second layer formed as a profiled layer and consisting for example of individual profiles placed next to each other. others, which are bonded, bonded, vulcanised or the like to the elastic material formed by a sink, so that the first and second layers integrate into a composite material.

This type of construction makes it possible for the first layer, which has the function of an elastic pivoting connection of the profiles, to use a particularly elastic, flexible and thin material, for example Teflon, or particularly thin spring steel, using on the contrary for the second layer, which mainly has the function of imparting high lateral stability, a particularly rigid and pressure resistant material, such as stainless steel or hard plastic material.

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By means of a composite plate material it is furthermore possible to give the insole according to the present invention special characteristics which would not be possible or only very difficult to achieve with a single layer plate material. Thus, by means of rectangular profiles or U-profiles arranged closely next to each other, such as transverse profiles of the composite plate material, an insole can be obtained which allows only an upward but not downward bending of the sole, which means gives, for example to a football boot, particularly good shooting characteristics.

Although the insole according to the present invention may in principle be used as an applied outsole or as an inserted midsole, it is preferably formed as a second sole or rigidly attached to the sole to integrate stably into the overall sole structure and therefore This can be done by bonding to the sole or by vulcanization on or inside the sole, as well as by deformation of the insole with material of the sole.

The insole according to the present invention may according to the present invention be formed as a second sole so that the hollow spaces or gaps between the transverse profiles and optionally, in certain embodiments, the longitudinal profiles and other profiles are filled by a padding material is preferably long lasting with the insole so that the pad and the padding material preferably are joined together to form a composite material, whose upper and / or lower surfaces are flat.

The present invention further provides a shoe sole having an insole according to the present invention that is rigidly attached to the sole or forms a component part of the sole, or wherein the sole is a second sole of the above type. or is rigidly connected with such a second sole. In such an outsole the insole may be enclosed by the application of a plastics material by foaming, injection, pouring or other process, or vulcanization, which plastics material forming at least a portion of the soles or masses. filling or the entire filling mass.

With the insole, second sole or sole according to the present invention, practically all types of footwear can be provided, including the term footwear or shoe within the scope of this specification and the claims also the boots, in particular the boots. boots, rubber boots, and the like, and shoes in the most limited sense, for example slippers, high shoes, and the like. The shoes may, by using the insole, second sole or sole according to the present invention be manufactured at very favorable costs. In addition to the aforementioned advantages, the high lateral stability of the insole, second sole or sole according to the present invention provides all the shoes with a footrest and an underfoot protection as well as a protection of the ball area of ​​the foot. especially in the heat of a run, making the insole resiliently resilient, among other things, to make the foot less tired.

The insole, second sole or sole according to the present invention are advantageous for normal shoes, for example walking or running shoes, and particularly advantageous for sports shoes, for example, but not exclusively for sports shoes. light athletics, jogging shoes, golf shoes, tennis shoes, high-heeled shoes, climbers' shoes and the like, and due to the amazing features they give the shoe, not only ease of use and health protection, as well as cost-effectiveness resulting from various characteristics, such as increased support stability, torsional capacity, elastic resilience, etc. To give just one example, golf shoes achieve better hit quality due to firmer support, good rolling ability and good twisting ability. In the case of high jump, as experiments have shown, it can reach a higher jump height. In the case of climber shoes, it is particularly critical to transmit the pressure from the bottom up due to the characteristics of the floor, eg heaps of rubble, and these pressures are substantially

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while, due to the possible construction of the flat sole, the close contact with the ground is substantially improved, greatly avoiding the danger of slipping of the feet. This substantial decrease in the danger of slipping and improved contact with the ground is a very important advantage of the present invention in all types of sport.

The foregoing and other features and advantages of the present invention are described in more detail below based on particularly preferred embodiments with reference to FIGS. 1 to 17 of the drawings, in which details of such embodiments are shown. In the drawings, the figures represent:

Fig. 1 is a top view of a first embodiment of an insole according to the present invention extending over the entire sole area and provided with continuous transverse profiles (for example, on the 1: 1 scale for a shoe NQ. 42) and an enlarged partial perspective view of the cross sections;

Fig. 2 is a top view of a second embodiment of an insole according to the present invention which is analogous to the embodiment of FIG. 1, but the profiles having a somewhat wider width of the individual profiles and provided with through-openings for plastic material, with which the insole is wrapped by foaming or otherwise when soaked in a sole;

Fig. 3 is a top view of a third embodiment of an insole according to the present invention._; as well as a cross section of this insole, which is analogous to the embodiment of fig. 1, but which differs from this embodiment in particular in that it has through-holes for the placement of fastening elements consisting of spikes, and in that the transverse profiles follow in the area of ​​the foot joint partially longitudinal profiles;

Fig. 4 is a section of a rectangular profile that follows meanders which may be provided in various embodiments;

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Fig. 5 is a section of a meandering trapezoidal profile provided with a secondary profile;

Fig. 6 is a section of a zigzag profile provided in the embodiments of FIGS. 3 and 7;

Fig. 7 shows a fourth embodiment of an insole according to the present invention which is provided with a transverse profile only in the forefoot area; on the contrary, in the area of ​​the foot joint, a torsion bridge with a transverse and / or longitudinal profile is provided (in the present case a profile in the foot joint area extending in the longitudinal direction at an acute angle with the longitudinal direction of the sole) and is provided in the area of ​​the heel with a longitudinal profile, furthermore there are through-holes for fixing spikes;

Fig. 8 is a fifth embodiment of an insole according to the present invention provided with recesses for better transmission of foot pressure to the ground and having in the area of ​​the foot joint a continuous longitudinal profile;

Fig. 9 is a partial cross-sectional view taken along line MN of FIG. 8;

Fig. 10 is a top plan view of a soles with a broken-up insole extending only to the front of the foot;

Fig. 11 is a section through line ST of FIG. 10, however, the plastic material with which the insole is attached to the sole by foaming is not shown, so as not to complicate the representation;

Fig. 12 is a longitudinal sectional representation of the sole of a sports shoe of the present invention with flat sole and a heel wedge;

Fig. 13 is a longitudinal sectional view corresponding to FIG. 12 of another embodiment of a sports shoe according to the present invention with heel;

. Fig. 14 is a very enlarged partial cross-sectional view of a plate-shaped insole manufactured

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as a composite insole with several layers bonded together to form an integrated unit;

Fig. 15 is an enlarged partial longitudinal section of a first embodiment of a second sole formed by an insole, the hollow spaces or the intermediate spaces being filled with a padding material such that an upper surface and a lower surface are formed. respectively flat;

Fig. 16 is a partial longitudinal section through another embodiment of a second sole formed by a padded insole, the padding covering the profile on both sides; and

Fig. 17 is an enlarged longitudinal section of a shape of a second outsole formed from a flat insole on both sides by means of filler and a thin insole (insole) glued to one side or placed loose.

In the figures of the drawings the same or the same type parts have the same reference numerals, so that the parts which in a given figure have a reference number but which are not described, should be sought in the description of previous figures.

Referring first to FIG. 1, which is a top view of a first embodiment of an insole (1) according to the present invention. This insole is made of a single piece of hard and elastic plate material, more preferably spring steel sheet, and extends throughout the sole area, i.e. has substantially the same contour as an applied sole, as it is represented.

The insole (1) is provided on its entire surface with transverse profiles extending in the transverse direction (Q) of the sole and perpendicular to the longitudinal direction (L) of the sole. In the lower left part of fig. 1 is a perspective view of a partial view of these profiles (2). According to this detail, the transverse profiles have a trapezoidal shape in a meander profile with the rounded profile corners (3). These corners of the profile 3 are shown in fig. 1 to characterize the direction of the profiles and the period

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(P) of the profiles, corresponding to the distance between two edges (3) of the profiles shown in FIG. 1 at half-time 1/2 p, since the flanks of the transverse trapezoidal profiles (2) are slightly vertical, so that the two corners (3) bordering each corner of the profile in FIG. 1, seen from above practically coincide in the same line.

Of course, in fig. 1 and also in other figures only some of the profiles shown have reference numerals.

Periods of the profiles are as indicated in FIG. 1, the width of the periodically repeating cross-sectional elements of the profile, i.e. in the present case the width of a trapezoidal elevation (A) plus the trapezoidal pit (B)

Fig. 2 shows another embodiment of an insole 1, which differs from the insole according to FIG. 1 substantially because the transverse profiles (2) have a longer period (P) and the insole is provided with through openings (4), formed in particular as openings. These through-holes (4), which are distributed over the surface of the insole, act as through-openings for the plastics material when foaming, injecting, pouring or other wrapping the insoles with plastics material to integrate them. the insole in a shoe sole.

In addition, in fig. 2 show the longitudinal axis (CD), the rolling axis (EF) and the transverse axis (G — K) of the sole into which the insole (1) is integrated.

The transverse profiles 2 of the insole 1 according to FIG. 2 preferably have the shape shown in fig. 1 below but may also have another shape of the profiles, for example one of the shapes shown in FIGS. 4, 5 and 6.

Fig. 3 shows a top view of a third embodiment of an insole (1) according to the present invention, as well as a longitudinal section of an insole, which differs in various respects from the embodiments of FIGS. 1 and 2:

a) While in the forefoot (5) and heel (7) cross-sections (2) are preferred, the

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The foot joint has profiles (8) extending in the longitudinal direction of the insole (1), which succeed each other at the two longitudinal ends of the heel area (6) by means of transition profiles (9) to the transverse profiles ( 2) the front zone of the foot (5) and the heel zone (7).

b) Both the cross sections (3), the longitudinal sections (8) and the transition sections (9) are formed as zigzag profiles, as shown in the cross section of FIG. 3. This profile is shown in perspective view in partial view in fig. 6

c) Finally, the insole (1) of the embodiment of fig. 3 has through-holes (10) for placing threaded or threaded fittings (11) for screwing protrusions or spikes (12) (see fig. 3 at right above). In order to be able to attach the applied or seated pieces 11 to a particularly stable wide base 14 in the insole 1 of FIG. 3, flat holes (13), i.e. cross-sections (2), are provided around the through holes (10). The type present in the attachment of protrusions or spikes is only one example of the multiple possibilities of a fixed or removable placement thereof in the insole according to the present invention.

As already indicated, fig. 4, 5 and 6 are partial perspective views of profiles which instead of the profile shown in FIG. 1, bottom left, can be used as transverse profiles (2) and longitudinal profiles (8), as well as optionally as transition profiles (9). Note here that the profiles shown are just a few profiles from a multitude of different profiles suitable for the insole according to the present invention.

Fig. 4 depicts in detail a rectangular meander profile, while fig. 5 shows a trapezoidal profile in meanders with a secondary profile (15) that is smaller than the trapezoidal profile in meanders and whose direction of the profiles extends perpendicular to the direction of the trapezoidal profiles in the meander. Fig. 6 shows, as already mentioned, a zigzag profile. The edges (3) of the profile can be rounded

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more or less sharply, so that the profiles according to FIGS. 4 and 6 may thus follow rib profiles with ribs having a semicircular, oval or arched cross-section.

The period (P) of the profiles is preferably in the range from 3 mm to 20 mm, preferably in the range from 6 mm to 16 mm, with the range from 8 mm to 13 mm being particularly preferred, while the height ( H) of the profiles is preferably in the range from 1 mm to 5 mm, preferably from 2 mm to 3 mm, the hard and elastic plate material of which the insole (1) is made, preferably metal material. or plastic, particularly preferably by spring steel. The thickness of this board material depends on the type of material and is generally in the range 0.5 mm to 1.5 mm.

Fig. 7 shows an insole which has a transverse profile (2) at the front of the foot and a continuous longitudinal profile (8) with through-holes (10) for the direct placement of spikes in the area of ​​the foot and heel joint. or for attaching spike fastening means.

Fig. 8 shows a top view of another embodiment of an insole (1) according to the present invention, the transverse profiles (2) of which are provided in the front area of ​​the foot and in the heel area between a longitudinal section (8) in the region of the foot joint, are interrupted by several cavities (16) facing the ground. The cavities can be made with circular shape. The three cavities 16 in the forefoot zone are in the big toe and ball area, while the rear cavity 16 is in the heel zone.

These cavities 16 serve for a better transmission of foot pressure to the ground. As shown in fig. 9 depicting a longitudinal section along the line MN of FIG. 8 through one of the cavities, the bottom 17 of the cavity 16 is flat or flat and is at the deepest level of the profile, as close as possible to the ground.

The sole 18 shown in FIG. 10 is provided with a

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insole (1) shown in phantom, extending only to the forefoot and with a continuous profile (2). In the longitudinal section of fig. 11 along the line ST of the sole of FIG. 10, only the outer outsole is shown in Figure 10, whereas the plastics material surrounding the insole (1) in foam form and rigidly attached to the outer sole has been eliminated for reasons of simplicity. .

Figs. 12 and 13 schematically show how preferably an insole (1) fits into the overall structure, namely between the outsole (19), on the one hand, and the insole (20) and the footrest (21). ), on the other hand, the heel piece 22 being able to in the case of a flat sole 18 of FIG. 12 be a wedge-shaped insert.

Both the insole (1) of the sole (18) according to FIG. 12 either the sole according to fig. 13 have a continuous transverse profile in the forefoot and heel area, while in the foot joint area a longitudinal profile is provided (8). In the case of the heeled shoe according to fig. 13 this longitudinal profile is formed in an upward arc, as can be seen for example in (23), succeeding a zone (24) descending from the heel (1) at the beginning of the heel in the transverse profile (2) of the zone of the heel.

In the case of the sole according to fig. 12, in the transverse profiles (2) of the forefoot and heel area there are spikes (12) which fit through the corresponding through holes of the insole (1) and which in their bases (25), which rest on the vertical sides of the profiles (2) laterally are welded, for example, or otherwise attached to this insole. For forming the soles provided with an insole according to the present invention, all the usual materials may be used, and all other insoles, for example the heel wedge, may be surrounded by plastic foam in the case of wedges according to the invention. fig. 12, together with the insole (1), on the sole.

In fig. 14 is finally shown a partial cross-section of an insole according to the present invention, consisting of a composite material formed of several layers

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(26), (27) and (28), which are glued together to form an integrated composite material:

The bottom layer 28 in FIG. 14 consists of square, box-like profiles (29) placed side by side which are spaced apart a very short distance (U), for example 0.1 mm or less or abutting. each other. These box profiles (29) are rigidly connected by means of the glue layer (27), with the layer (26) formed by a flexible, elastic flat plate material.

The special advantage of the insole 1 according to fig. 14 is that the insole can only flex in the direction of the arrow (X) upwards and cannot flex in the opposite direction downwards, since in the latter case the sides (30) of housing profiles (29) adjacent areas support each other. A shoe whose sole is provided with such an insole is particularly particularly suitable for a football boot, as this insole prevents undesired bending of the sole down to hit the ball, for example to kick the ball.

The sheet material forming the layer 26 may, for example, consist of spring steel or Teflon steel and have a thickness (V), depending on the type of material, preferably between 0.1 mm and 2 mm. while the housing profile (29), which may be, for example, extruded from high strength aluminum alloy, may have a side length (W) in the range from 3 mm to 5 mm, preferably. Optionally, the casing profiles (29) or any other predicted profiles made of such a composite plate material, provided they are made of metal, may be provided with a soft plastic coating in order to strongly dampen the resulting noises. of the mutual shock between the profiles.

In fig. 15, 16 and 17, there are shown very extended and not necessarily to scale partial longitudinal sections of three embodiments of a second sole (31) comprising an insole (1) with transverse profiles (2) a filler (33) (shown in phantom) that fills in

<img file="PT92528B_D0020.tif" />

_ hollow spaces or intermediate spaces (32) of the profiles. This filler 33 fills the hollow profiled spaces or intermediate spaces 32 such that the upper outer surface 34 and lower outer surface 35 of the second sole are flat.

The insole (1) and the filler (33) are preferably adhered and rigidly bonded together to form a constructive component, for example by bonding or vulcanization, and where the insole is metal, a Primary lining on insole for easy grip. The filler may consist of or contain plastic and / or felt material and / or other filler material.

While in fig. 15 the thickness of the second sole 31 is equal to the height of the insole 1 in the second sole 31 of FIG.

the thickness (R) of the padding mass (33) is greater than the height (H) of the insole (1), so that on both sides of the second sole there are respectively thin layers of thickness (Y) and ( Z) of filler over the insole (1). Layer (Y) may also be provided on one side only, preferably on the foot side, in particular for increased foot comfort.

In the embodiment of fig. 17 results in even greater comfort by placing on the upper face (34) of the composite product formed by the insole (1) and the filler (33) a thin, firmly adhered or welded applied sole (36).

The insole 1 in fig. 15, which has a round trapezoidal cross-section (2), may be, for example, the insole indicated in fig. 1, in which, for example, the insole is made of spring-coated sheet steel with a primer, preferably of material thickness 0.2 mm, with a profile edge (P) of 5 mm and a height (H) of 2,0 mm and formed from a filler of elastomeric plastic material.

The insole 1 of FIG. 16, which has a groove-shaped profile, may be for example the insole represents. shown in fig. 2. And the insole (1) of fig. 17, with zig profile22

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-zag, may for example be the insole shown in fig. 3, but preferably without spike holes 10 and without the flat zone 13 of FIG. 3. In principle, the second outsole 31 may be made from any of the insoles according to the present invention, and in the case of the insole according to FIGS. 8 and 9, also the cavities (16) are filled with the filler (33), which may also have shock absorbing properties.

It is evident that the filler mass has a substantially lower hardness than that of the insole material, for example it will be flexible and elastic and possibly also shock absorbing, so that the insole characteristics according to the present invention are highly efficient despite the mass of the insole. filling. The same also applies to the plastic material which, according to the present invention, can be molded around the insole.