CZ260898A3 - Footwear - Google Patents

Abstract

Footwear with uppers (A) and a lower support part (1) for the wearer's foot connected to the aforementioned uppers, said part (1) consisting of a sole (2) on which a wedge (3) is placed, accommodating at least one internal insole (6) or midsole that comes into contact with the wearer's foot; means that yield under the wearer's weight are incorporated beneath at least part of the insole in the support part (1), these means allowing deformation of the insole such that the latter permanently takes on the specific shape of the foot sole of the person wearing the shoe.

Description

FOOTWEAR WITH DEFORMABLE INSole, designed to adapt to the shape of the user's foot

Field of the invention

The present invention relates to footwear of the type described in the preamble of the main claim.

BACKGROUND OF THE INVENTION

It is known that the foot of a human foot in each case has an individual shape configuration. It is also well known in the art that most shoes (known as hiking shoes) are provided with anatomically shaped insoles, and that most shoes are designed to eliminate the possibility of fatigue and minor injuries (bone and muscle structures) to the wearer , especially those caused by prolonged use, are comfortable and stable when impacting on the mat.

Although the footwear (or shoes) provided with anatomically shaped insoles is well known in the art, it is because and because the anatomical shape of the foot varies according to the wearer that the insole exhibits undefined adaptability anatomical configuration, which means that this insole is generally designed for generic adaptation to the generally shaped sole of the general wearer. In other words, the anatomical insoles on the market are designed to only partially adapt to the anatomical shape of each user's foot. As a result of this arrangement, which in many cases causes considerable fatigue for the wearer ' s legs, the anatomical footwear known from the prior art, in particular during long-term use, has obvious disadvantages and disadvantages.

Footwear provided with insoles that deform continuously and not permanently under the weight of the wearer and consequently adapt to the anatomical shape of his foot is well known in the art. After use, this internally arranged insole returns to its original shape. Unfortunately, these solutions are not able to offer satisfactory comfort in use, require relatively high production costs and are primarily used for footwear with special characteristics, such as clogs.

In addition, the footwear provided with such insoles loses its characteristic ability to adapt to the anatomical shape of the foot, depending on time and frequency of use.

SUMMARY OF THE INVENTION

It is generally an object of the present invention to provide a shoe with improved anatomical properties as compared to prior art solutions.

In particular, it is an object of the present invention to provide

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It is a further object of the present invention to provide a shoe of the above type with a low manufacturing cost and a selling price and with a corresponding leg stability of the wearer on the mat, which eliminates the possibility of minor bone or muscle injury and reduces fatigue of the user's lower limbs under any conditions of use.

It is a further object of the present invention to provide a shoe of the above-mentioned type which, by virtue of its characteristic anatomical capability, allows to provide adequate compensation for improper and improper fit of the foot on the mat.

The foregoing and other objects and objects of the present invention will be apparent to those skilled in the art on the basis of the facts described in connection with the proposed footwear in the appended claims.

The shoe according to the present invention may be either hiking shoes or sports shoes. In the latter case, such footwear should be equipped with known means capable of attenuating the shock effect of the mat while accumulating and returning as much accumulated energy as possible towards the wearer ' s foot in a manner substantially similar to the reciprocating the spring effect of the mechanical spring.

Ftft ftft ftft ftft ftft ftft ftft ftft ftft ftft ftftft ftft ftft ftft ftft ftftft ftft ftft

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the present invention, a detailed description thereof is given by way of example only and not by way of limitation of the claimed scope, in combination with the accompanying drawing, in which:

Giant. 1 is an exploded perspective view of a shoe according to the present invention;

Giant. 2 is a perspective view of a portion of the shoe shown in FIG. 1, seen from below;

Giant. 3 is a cross-sectional view of the shoe in the assembled state taken along line 3-3 of FIG. 1;

Giant. 4 is a cross-sectional view taken along line 4-4 of FIG. 3;

Giant. 5 is a perspective view of an alternative embodiment of the shoe shown in FIG. 1, partially disassembled.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIG. 1 to 4 of the accompanying drawings include a sports shoe upper A and a lower base or lower support part 1. Said lower support part 1 comprises a sole 2 formed, for example, of synthetic rubber to which a wedge-shaped porous material is attached by means of one

The insole of the user's fabric is arranged (shown in Fig. 3). Said prior art methods of heel 3 formed from a known (for example ethyl (vinyl) acetate) or low density polyurethane or rubber. In this wedge heel 3 is formed an upper recess 4, defined by an overlapping peripheral rim 4A (see Fig. 1 of the accompanying drawings), in which a backing insole 5 formed, for example, of cork, can be placed. Furthermore, on the upper surface of the insole 5 can be conveniently located internally 6, which may be formed, for example, and on which the leg of the accompanying drawings rests during wear, the sole 2 does not have known grooves 8 or at least a portion thereof.

According to the present invention, the backing 5 or the internally arranged insole 6 on which the wearer's leg rests during wear is permanently deformable after at least one tread. This deformation follows the anatomical shape of the foot in such a way that said insole or insoles conform to this shape. Such an insole 6 takes on a shape corresponding to the anatomical shape of the foot of the user's foot.

The desired deformation of the insole is preferably achieved by an arrangement in which the insole or insoles rests directly or indirectly on a underlying layer formed of a soft pliable material, preferably coupled to a wedge heel 3. This insole may be deformable either in the whole area or only in the relevant, predetermined, specific

- 6 zones.

Referring to the cited drawings, in order to achieve the aforementioned deformation, the shoe is preferably provided with a wedge heel 3, at the bottom of which is a cavity 10 (separated from the upper recess 4 by a layer 10A formed integrally with the wedge heel and inherent elastic flexibility), positioned relative to the granulated in dependence on the front sole 2 and comprising a layer whose individual granules have, in the footwear, the size of the moving material on a type preferably in the range of 0.7 to 4 mm. This layer may be formed of synthetic or natural materials. For example, such materials may be granulated ethyl (vinyl) acetate (EVA), granulated rubber (synthetic or natural), cork or granulated foam. In an alternative granular material material and purpose-oriented arrangement, the layer 11 formed as a combination of these may be located, for example, in different specific zones of the cavity 10: in this case, since the above-mentioned materials exhibit different deformation capabilities, this arrangement can be obtained in a single layer , during application of the user ' s weight, a layer 11 with different compliance in different areas corresponding to specific zones of the user ' s foot. Thus, due to the effective action of the lower support part 1, it is possible to achieve the support and support of the user's foot in a differentiated manner, for example according to the purpose of using the shoe (walking or sport).

Because the user's weight affects • •

the lower support part 1 in a differentiated manner and primarily acts on a zone corresponding to the heel zone of the user's foot (in FIG. 3 of the accompanying drawings, this zone is designated by the reference numeral K), the layer 10A has a greater thickness in this heel zone than in the metatarsal zone (indicated by M in the cited Fig. 3).

In an alternative arrangement), in order to ensure the possibility of deformation of the internally arranged insole 6 (and the underlying insole 5, if present), the layer 10A may be divided into several separate, separate zones: e.g. in accordance with the foot arch zone (which Referring to Fig. 3, a granular material layer is provided which provides the user with a substantially semi-rigid arch support (since the heel 3 is itself at least partially soft and pliable).

For this reason, the layer 11 is compliant during use under the weight of the user. Such elastic compliance permits a corresponding deformation of the internally arranged insole 6. Specifically, and since this load mass is distributed naturally, in particular to certain specific zones of the internally arranged insole 6 (metatarsal zone M and heel zone K), these will be zones subject to greater deformation than adjacent and adjacent zones (for example, zones bearing the lateral sides of the foot). The aforementioned deformation consists in bending and twisting an internally arranged insole toward the sole by the weight of the user and sliding the insole toward the sole. The granulated material of the layer 11 moves into the respective cavity 10 thus allowing for elastic deformation of the internally arranged insole towards the sole and, at the same time, providing the foot with support and support at the desired location, which in other words means a location where part 1 shoes smaller. This arrangement explicitly allows for greater comfort for the wearer and less fatigue for the user's feet during use. In addition, the specific design of the shoe (or shoes) of the present invention offers less risk of damage to the bone and muscle wearer during use, such as sporting activity.

foot structures such as e

It must be understood that after the first transfer of the granular material from the layer 11, and in any case, after the granular material has reached its final position within the interior of the wedge heel cavity 10 (achieved preferably after prolonged use by the wearer) the granular material is in a compact state (due to the weight of the wearer) so that it remains permanently in the above-described, achieved location. In such an arrangement, said internally arranged insole on which the user's foot rests can permanently maintain a shape corresponding to the anatomical shape of the user's foot.

In accordance with a further enhancement of the comfort of the shoe, and for the purpose of attenuating the impact of the user ' s foot on the pad and returning at least a portion of the stored energy towards the user ' s foot which could otherwise be lost and unused on the pad, and arranged at least one recessed liner 13, including suitable means which:

They are capable of providing and enabling the aforementioned damping, accumulation and return of energy towards the user's foot. The liner may be an liner of the type described in the prior patent application of the same applicant: for example, the liner may consist of an airtight housing in which at least one layer of elastically deformable barrel elements (not shown in the accompanying drawings) are , the central zones coupled to each other and to the opposite side wall of the airtight housing. According to another alternative embodiment, which is the subject of another patent of the same Applicant, the liner may consist of an airtight housing comprising one liquid in a liquid state and one liquid in a gaseous state (not shown in the accompanying drawing), which is stepping on a pad to compress said recessed liner, a liquid in a liquid state capable of absorbing; in this way a damping effect is generated by the liquid absorption of the gas, partially absorbing the energy transmitted from the user to the substrate. As soon as the impact effect caused by the user's weight on the above liner is interrupted, the gas is expelled by the liquid, releasing into the inner space of the airtight housing, generating some elastic pressure effect acting towards the foot of the user ' s foot. washers.

Said liner 13 is embedded in a layer 11 of granular material, which keeps it in the appropriate predetermined position (heel zone K). In an alternative embodiment, in the latter arrangement, the wedge heel 3 may.

Include a special housing (defined by body-facing walls) adapted to insert and hold the recessed liner 13 in the corresponding corresponding position.

According to another embodiment of the present invention, further, an embedded insert 13A of the same type as the above-mentioned insert 13 or equivalent can be designed and arranged, which can be conveniently located in the metatarsal zone M of the lower support 1 and which is indicated by a broken line in FIG. 2 of the accompanying drawings.

Further in the detailed documentation, and the components described in an embodiment of the present invention, FIG. 5 is a drawing in which the individual parts corresponding to the parts and components, the context of the above-cited figures, are denoted by the same reference numerals. Referring to FIG. 5, the upper A is already coupled to a wedge heel 3. (on which at least an internally arranged insole 6 is mounted; however, it is not shown in the cited figure). In the contemplated embodiment of the present invention, the wedge-shaped heel 3 is coupled means adapted to accumulate and return energy towards the user's leg upon contact with the pad and subsequent lifting, while simultaneously supporting the user's leg in a reasonably sufficient manner. Such means, detailed in the prior patent of the same Applicant, comprise at least one interlining insole 40 formed of composite materials and expediently disposed between the wedge heel cavity 10 and the sole 2. The interlining insole 40 consists of a first portion 50 formed of woven fabric. * · «Ν ν ν ♦♦ · · · · · · * · * * * * · · · · · * · * * * A combined fibrous material (this material represents a combination of the weft fibers T and the warp fibers O, forming a conventional flat fabric); the fibers of such material may be carbon fibers impregnated with a thermosetting resin (thermoset) and / or fibrous carbon material marketed, for example, under the trade name Kevlar (aromatic polyamide fibers impregnated with a thermosetting resin). In the case of a combination of carbon fibers and carbon polyamide fibers, the fabric thus obtained comprises, for example, a weft formed from carbon fibers and a warp formed from fibers of aromatic polyamide or Kevlar. All of the aforementioned weft fibers T (or warp fibers 0) are positioned in a parallel arrangement and at a predetermined angle relative to the longitudinal axis X (with the weft fibers being arranged perpendicular to the warp fibers).

A first woven composite material portion 51 is conveniently coupled to said first portion 50 in a manner known in the art, conveniently positioned to correspond to the user's foot arch zone P, and a third woven composite portion 52 that is conveniently positioned in accordance with the present invention. a metatarsal zone M (which, assuming and exemplified in Fig. 3 of the accompanying drawings, may occupy the extent of the entire section between the front toe 53 of the shoe and the second portion 51). The second portion 51 and the third portion 52 define, in combination with each other, a second layer 55 of an insole formed of a composite material. Said first portion 50 comprises lateral tongue protrusions 50A and 50B.

Specifically, the fibers of the first portion 50 and the second portion of torsional stiffness are other owls, weft (e.g., carbon fibers, aromatic polyamide fibers, or fibers) relative to one another. of a similar type), in order to achieve the desired substantial significance in the corresponding parts of the sole arranged to cross each other, the fibers T and the warp threads O of one part (e.g. the first part 50) are positioned in a different spatial angular configuration compared to the spatial angular configuration the weft threads T and the warp threads O of the second portion (e.g., the second portion 51). Accordingly, the weft fibers T are arranged at, for example, an angle of 45 ° relative to the longitudinal axis X of the sole, while the weft fibers T are arranged at an angle of 90 ° relative to said longitudinal X axis. Specifically, the overlapping of the first portion 50 and the second portion 51 in the region of the foot arch support zone provides an assembly having high torsional stiffness. Said support zone of the foot arch also has an acceptable bending stiffness.

In contrast, the fibers of the third portion 52 (i.e., the weft fibers T and the warp fibers 0) are disposed in a single direction, which means that the weft fibers and the warp fibers are disposed in this portion parallel to each other relative to a predetermined spatial orientation. means that all the fibers are arranged at a predetermined spatial angle with respect to the longitudinal X-axis of the insole (these fibers will be, for example, at an angle of 90 °). The weft threads T and warp threads O of the third portion 52 are arranged parallel to the combination of the weft threads T and warp threads 0 of the respective portion of the first portion 50 corresponding to said third portion 52. 9 99 9

9 «99 99 9 9 9 ·

9 9 · 9999999

The corresponding section of the first portion 50 (comprising the weft threads T and T as well as the warp threads O and O in parallel arrangement) explicitly allows the desired flexibility of the metatarsal zone M of the insole (in the direction indicated by the arrow F) ), furthermore, in the case where the third portion 52 is coupled to the first portion 50, permits the transfer of conventional bending in this zone about the W axis, which is arranged at right angles to the respective longitudinal X-axis of the shoe and positioned between the front the toe 53 of the shoe and the second part 51.

In the above embodiment of the present invention, the sole 2, which forms part of the lower support part 1 and which is attached to the insole 40, for the purpose of overlapping and lining the metatarsal zone M and the heel zone K may be divided into two parts 57 and 58. Accordingly, in such an embodiment, it is assumed that the insole 40 has two distinctly separate, separate body portions, one of which. a rigid portion, corresponding to the foot arch support zone P, and a second, flexible portion, located between the front toe 53 of the shoe and the heel zone K and corresponds to the aforementioned support zone P.

Thus, in accordance with the present invention, the outsole formed during use will, due to its configuration, exhibit sufficient rigidity to achieve the desired adequate ability to transmit the action of the foot of the wearer during its movement; however, since the metatarsal zone is sufficiently flexible, the sole exhibits sufficient elastic compliance that does not adversely affect or adversely affect the bone and muscle structure of the foot

• 4 · 4 «4 users, eliminating the possibility of small, relatively complicated fractures that are particularly dangerous for users of light athletics. In addition, the flexibility of the metatarsal zone M, overlapped by the third portion 52 extending between the front toe 53 of the shoe and the second portion 51, acts as a means of returning as much energy as the user exerts and transmits to the mat while generating a substantially significant pressure effect (which is particularly advantageous for use in such sports as light athletics and basketball).

In a preferred arrangement, a layer 60 of compliant material (e.g., foam or synthetic rubber) may be arranged between the insole 40 and the heel 3, and more specifically between the wedge heel cavity 10 comprising the granular material layer 11 and the interlining insole 40. A composite material layer 60 (e.g. ), which effectively encloses the cavity 10 and acts as a damping element for damping the impact effect on the pad generated by the user during movement.

The embodiment of the bottom support portion 1 of the present invention shown in FIG. 5 of the accompanying drawings makes it possible to provide a shoe which exhibits anatomical adaptability of the user ' s foot, while at the same time not obstructing the feature in any way, restoring the aforesaid energy towards the user ' s foot.

«· * *« «« «« · · «« «· · · · ·

According to an alternative embodiment of the present invention shown in FIG. 5, the lining 59 extends from the second portion 51 and extends such that it is coplanar with the second portion 51. Said lining 59 (or tongue) is preferably formed of a composite material by weaving such that its weft and warp fibers are oriented in the same way as the weft and warp fibers of the first portion 50 and arranged in parallel arrangement with each other (representing a unidirectional linear arrangement), such that it is insertable into a corresponding recess 65 formed in the portion 58 of the sole 2. The purpose of such a structure is to ensure the stability of the lower shoe support part 1 by which the accuracy and quality of fit and support of the user's foot relative to the pad are increased.

In the foregoing description, various embodiments of the present invention have been explained in detail. However, notwithstanding these detailed embodiments, other alternatives and variations thereof may be made. Accordingly, it is possible, for example, to form an internally arranged insole 6 as a pliable insole (containing, for example, a granular material). All such other solutions are considered to be within the scope of the present invention as defined by the appended claims.

Claims (28)

PATENT CORE & C Claims Footwear consisting of an upper (A) and a lower supporting part (1) connected to said upper (A) and comprising a sole (2) on which a wedge heel (3) is conveniently arranged, adapted to receive an insole ( 6) for contacting the foot of a user ' s foot, characterized in that said internally arranged insole (6) upon which the foot of the user rests can be permanently deformed after at least the first use of the footwear, the deformation following an anatomical shape the legs of the user in such a way that the internally arranged insole adopts a shape corresponding to the anatomical shape of the foot of the user's leg. Footwear according to claim 1, characterized in that said internally arranged insole (6) is supported, directly or indirectly, on flexible means (11) which are elastically deformed under load of the user's weight, thereby causing the internally arranged insole to deform such in a manner that permanently accepts the specific anatomical shape of the foot of the user ' s foot. Footwear according to claim 2, characterized in that said flexible means consist of a layer (11) of granular material which is arranged in the bearing means (3) located below the deformable internally arranged insole (6). Footwear according to claim 3, characterized in that said granular material is a synthetic material 0000 • 00 * 0 0 0 0 0 · 0 0 0 0 0 0 000 · · 0 »0 · 99 99 99 origin. Footwear according to claim 4, characterized in that said granular material is granulated ethyl (vinyl) acetate. Footwear according to claim 4, characterized in that said granular material is a synthetic rubber in a granular state. Footwear according to claim 4, characterized in that said granular material is a granulated foam. Footwear according to claim 3, characterized in that said granular material is a material of natural origin. Footwear according to claim 8, characterized in that said granulated material is natural rubber or cork in a granulated state. Footwear according to claim 8, characterized in that said layer (11) of granular material comprises granules of different materials. Footwear according to claim 3, characterized in that the size of the granules of the material from which the flexible means (11) are formed is in the range of 0.5 to 4 mm, the choice of which size depends on the type of footwear or method its intended use. 9 9 9 99 99 99 99 99 9 9 9 • 9 9999 9 9 999 99 99 99 Footwear according to claim 3, characterized in that said receiving means (3) in which the granular material is deposited is a wedge heel (3) provided with a cavity (10) for receiving a layer (11) of the granular material. Footwear according to claim 11, characterized in that said cavity (10), comprising a layer (11) of granulated material, has a variable depth which is a function of the specific zones (K, M and P) of the wedge heel (3), that said depth is of a larger size in accordance with the heel zone (K) of the heel (3) corresponding to the heel zone of the user ' s foot. Footwear according to claim 3, characterized in that said layer (11) of granular material is continuous, that is to say, said layer extends over the entire surface area of the insole (6) on which the user's foot rests. Footwear according to claim 3, characterized in that said layer (11) of granular material is discontinuous and has separate parts which are separated from each other and which are positioned in accordance with different, specific zones (K, M and P) internally arranged insoles (6) on which the user's foot rests. Footwear according to claim 1, characterized in that it comprises means (13, 40 and 60) adapted to dampen and accumulate the impact effect of the user's foot on the mat and to return energy acting towards the user's foot along the foot. - 19 »· · · · · · · · · · · · · · · · 99 99 99 99 • 9 9 9 »· ·· 999 9 9 ' 9 9 9 99 99 to lift it off the mat. Footwear according to claim 16, characterized in that said means (13) for energy storage and restoration are embedded in a layer (11) of granular material. Footwear according to claim 16, characterized in that said means (13) for storing and restoring energy are located in a corresponding position in the wedge heel cavity (3) between said wedge heel and the sole (2). Footwear according to said means comprising at least claim 16, characterized in that, for the storage and recovery of energy, one insert (13) consisting of an airtight housing in which a plurality of barrel-like elements are arranged coupled to each other by their central zones and surrounded on each other the opposite ends of the casing. Footwear according to said means comprising at least claim 16, characterized in that, for the storage and recovery of energy, one insert (13) consisting of an airtight housing containing at least two fluids, the first fluid being absorbable by the second fluid, resulting in to attenuate the shock effect generated by the user in contact with the mat and to accumulate at least a portion of the energy transmitted by the user during movement to the mat, and that the first liquid is released from the second fluid when the leg is lifted from the mat; user's leg. 4 4 4 9 4 9 9 9 9 99 9 9 4 • 4 9 99 99 Footwear according to claim 16, characterized in that said means for storing and restoring energy comprise a layer (60) of flexible material acting as damping means and granular material disposed between the layer (11) and the combined element (40) arranged as means for the return of material, energy. Footwear according to claim 21, characterized in that said composite material element is an insole (40) and comprises a first, rigid portion positioned in accordance with the foot arch support zone (P) and a second, flexible portion located between the front toe (53) of the shoe and its foot arch zone (P), the second portion capable of flexibly bending at least one axis (W) positioned between the front toe (53) of the foot arch and its foot arch zone (P) . Footwear according to claim 22, characterized in that the composite material of the insole (40) comprises fibers and is formed by weaving, wherein the fibers of the first rigid portion exhibit a different spatial orientation with respect to the fibers of the second flexible portion having a unidirectional linear arrangement. Footwear according to claim 22, characterized in that said first rigid part of the composite material element (40) comprises at least two layers of woven composite material, wherein the weft and warp fibers of the first layer lie in a plane whose angle is relative to the longitudinal axis orientation (X) shoes zero, while the weft and warp fibers of the second layer lie ·· ♦ • 9 9 V φ φφφφφ φ φ φ φ φφ φφ in a plane which is arranged at an oblique angle, different from the fiber orientation of the first layer and thereby intersecting the layer. Footwear according to claim 22, characterized in that said second flexible part of the composite material element (40) comprises at least one layer of woven composite material, the weft and warp fibers of this layer lying in a plane which is oriented at the same angle as the longitudinal the axis (X) of the shoe, which means that the fibers have a unidirectional linear arrangement. Footwear according to claim 22, characterized in that said second flexible part of the composite material element (40) comprises a plurality of layers of woven composite material, wherein the weft and warp fibers of all these layers lie in planes which are oriented in the same angle as the longitudinal axis (X) of the shoe. Footwear according to claim 22, characterized in that said composite material element (40) comprises a first part (50) formed of a woven composite material supporting a second part (51) and a third part (52) which are also formed of woven composite material and expediently positioned at least in accordance with the metatarsal zone (M) and foot arch support zone (P), the weft and warp fibers of the first portion (50) lying in a plane corresponding to the plane in which the weft and warp lie the fibers of the third portion (52), wherein the fiber orientation of the third layer is different relative to the fiber orientation of the first portion and crosses one another. • 0 0000 ·· ·· • 0 0 0 • 0 0 0 0 0 0 Footwear according to claim 22, characterized in that the first part (50) extends in all zones (M, Pa K) of the lower support part (1) of the shoe.