RU2769308C1 - Insole - Google Patents

Abstract

FIELD: footwear.

SUBSTANCE: invention relates to an insole, in particular, for footwear. Claimed is an insole for footwear, with a main body consisting of the heel area, the metatarsal area, and the toe area, wherein the main body has an insert extending from the heel area at least into the metatarsal area, and has a recess in the heel area for the calcaneal bone of the wearer. The insert has at least two cuts extending from the recess in the heel area into the metatarsal area to form at least one first lining, and the main body is essentially flattened in the metatarsal area in the longitudinal direction so that the lower calcaneal spur of the heel and the tendon plate of the foot of the wearer remain essentially without pressure.

EFFECT: creation of an insole for footwear that avoids the disadvantages of the technical level and, in particular, supports, unloads, and/or gently cushions the foot of the wearer due to the geometry adjusted, preferably, to the shape of the foot, so as to achieve, in particular, uniform pressure distribution while simultaneously unloading the lower calcaneal bone and the adjacent tendon plate, namely, the plantar fascia.

15 cl, 3 dwg

Description

This invention relates to an insole, in particular for shoes, according to the restrictive part of paragraph 1 of the claims.

Insoles of this kind, preferably also referred to as an arch support or a shoe insole, are used in particular for medical and therapeutic purposes. However, they also find use in the field of sports, where the wearer's feet are subject to increased stress. The aim is, for example, to correct or prevent malpositions, support and/or relief of certain areas of the foot, in order to thus achieve an even distribution of pressure and/or provide shock absorption in order to ultimately avoid pressure peaks.

Many insoles are known from the prior art, in particular for footwear. Among other things, designs are known that consist of an insole adapted to the shape of the foot, as well as an insert, preferably installed underneath it, preferably made of a carbon-fiber-reinforced polymer material. In this case, insoles usually consist of one or more cushion elements, preferably connected in the form of a layer, which are preferably equipped with various functional elements, such as, for example, pads. By means of an insert mounted thereon and by preferably thermally deforming both components, the insole has an arch-supporting geometry. Thanks to this kind of insole, it is thus possible to support the arch of the foot, in particular to raise the flattened longitudinal arch of the foot and thus to correct the position of the foot. This occurs, in particular, by preferably individually adapting the insoles in the metatarsal region to the anatomy of the longitudinal arch of the wearer's foot. In addition to the supportive function, the insert has the advantage that due to the elasticity of the insert, which deforms or bends when walking, in addition to a highly unrestricted freedom of movement, a targeted activation of the muscles also takes place. The insert has just its inherent ability to return to its original position.

Such an insole with an insert is known, for example, from EP 1 625 803 A1.

This known arch support consists of a dimensionally deformed stabilization plate of a dimensionally stable polymeric material with high bending stiffness that supports at least the wearer's metatarsus. To this end, the arch support has, when viewed from the upper side of the insole and in the longitudinal direction of the insole, at least in the metatarsal region, a convex flexure to adapt to the anatomy of the longitudinal arch of the user's foot and thus provide a supporting function. In addition to correcting the flattened longitudinal arch of the foot, the insole also serves primarily therapeutic purposes. To do this, the insole has a plurality of stabilizing plates located on the lower side, capable of elastically changing the shape of corrective and stimulating elements. With their help, the so-called proprioceptive reflexes are triggered and, thus, the human body, in particular the muscles, is purposefully trained in its statics and dynamics.

A disadvantage of the form of execution of the insole known from this prior art, despite the fact that the insole, in particular, the insert, is designed in such a way that it has a round recess for the heel bone of the user in the heel region, where the user's foot is significantly more pressure. insert and preferably a heel pad, what remains unaccounted for is that the insert exerts pressure on the area of the lower heel spur and tendon plate insertion on the user's heel bone.

A particular disadvantage of the known form of execution is that, due to the round recess for the calcaneus in the insert, in particular in the area of the lower heel spur and attachment of the tendon plate, the insert forms a hard edge, which can cause particularly severe pain, in particular when plantar fasciitis. Plantar fasciitis is an inflammation of the tendon plate in the foot and is usually caused by overuse. This affects the place of attachment of the tendon plate on the calcaneus. Thus, due to the rigid edge of the insert, when the user is loaded, there is a particularly strong pressure on the tendon plate of the foot and/or on the heel spur.

A further disadvantage of the insole known from the prior art lies in the adjustment of the insole, in particular its metatarsal region, to the longitudinal arch of the user's foot, in particular when the user has flat feet and at the same time suffers from plantar fasciitis, that is, from inflammation of the tendon plate. Due to the rise of the longitudinal arch of the foot, in particular, due to the convex formation of the metatarsal region of the plane of attack of the insole, there is a particularly high pressure on the tendon plate, which is very painful for the user with plantar fasciitis, and with constant irritation can lead to further deterioration in risk of chronic leakage.

Therefore, the invention is based on the object of providing an insole for footwear which avoids the drawbacks of the prior art and which, in particular, supports, relieves and/or gently cushions the wearer's foot thanks to a geometry adapted preferably to the shape of the foot, in particular to achieve a uniform distribution of pressure while unloading the lower calcaneus and the tendon plate adjacent to it, namely, the plantar fascia.

According to one embodiment, an insole for shoes has a main body consisting of a heel region, a metatarsal region, and a toe region, while the main body has an insert extending from the heel region, at least into the metatarsal region, and has a recess in the heel region for the heel bone of the wearer, wherein the insert has at least one first incision extending from the notch in the heel region into the metatarsal region, and the main body in the metatarsal region is longitudinally substantially flattened such that the lower heel spur of the heel and the tendon plate of the foot of the user remain essentially without pressure. On the upper side of the insole, ie on the side facing the wearer's foot, the insole preferably has a geometry adapted to the shape of the foot.

Preferably, the insert has at least two notches extending from the heel recess into the metatarsal region to form at least one first patch. Particularly preferably, there are three incisions, so that at least two patches are thus formed. In this way, a hard edge is avoided at the recess of the last, in particular in the area of the lower tendon plate of the wearer.

According to a second embodiment, the main body of the insole may have a heel and/or tendon pad, the pad covering a recess and/or at least one incision and/or insert in the metatarsal region. Preferably, the heel and tendon pad spans the notch, at least one incision, and the last in the metatarsal region.

According to the third embodiment, the main body in the metatarsal region is a pad for lifting the transverse arch of the user's foot. To this end, the pelota, ie the pressure body, is preferably embedded in the main body and preferably has a domed geometry. Due to the convex shape in the transverse direction with respect to the insole, it is thus possible to raise or at least support the arch of the foot in the transverse direction.

According to a further embodiment, the main body of the insole has at least one constriction in the metatarsal region. In addition, the main body forms in the heel and/or metatarsal region a lateral, preferably concave, inlay on the inside. At the same time, in the area of main body constriction, preferably the inner side of the main body tab for medial support of the longitudinal arch of the user's foot is preferably convexly curved.

Further, the insert located on the main body preferably extends into the lateral formed inlay, in particular into the convex region.

According to a further embodiment, the main body of the insole and/or the insert has, in a convex region, a supporting body which can be detachably or not detachably attached to it. It is preferably attachable by means of Velcro fastener elements with the possibility of being detached on the insert or on the main body itself. This makes it possible to further stabilize the medial arch support of the wearer's foot.

According to a further embodiment, the insert located on the main body, which preferably has a high bending stiffness, is preferably made of a fibre-reinforced, in particular carbon-fiber-reinforced, polymer material. As a result, it is possible to achieve very high dimensional stability with an extremely low overall height. The fullness or thickness of the insert is preferably between 0.4 and 1.2 mm, particularly preferably 0.6 mm.

In order to increase the elasticity of the insole, the insert preferably has at least one second incision in the region of the insole, in particular in the convex region. Preferably there are several second incisions which extend from the side perpendicular to the longitudinal direction of the insole from the outside into the insert. This one or more second cuts, as well as the at least one first cut, are preferably wedge-shaped. In this case, the sharp end of the wedge-shaped notches is preferably made in the form of a round hole, so that no sharp edge is formed in order to avoid, when the insert is loaded, that is, when the insert is bent, a possible point of a given fracture.

According to a further embodiment, the main body of the insole has an indentation on the outer side for receiving the insert, so that the outer side of the insert is substantially adjacent to the outer side of the main body. It is also possible for the outer side of the insert to be pushed back in the recess relative to the outer side of the main body. This ensures a particularly compact and very flat design of the insole. In addition, by arranging the insert on the outside of the main body, it is possible that the patches formed by the incisions in the area of the lower tendon plate can be placed freely movable, in particular outwardly, under load and therefore also during bending. Thanks to this freely movable arrangement of the linings, a particularly high elasticity of the insole is achieved in the region of the tendon plate, so that it is particularly well relieved in this region.

According to a further embodiment, the base body is multi-layered, preferably provided with a first and second backing layer as well as a cover layer. In addition, particularly preferably in the heel and metatarsal region there is an additional layer of stiffness, preferably with a recess for the heel and/or tendon pad.

According to an embodiment of the method for manufacturing an insole according to the invention, (1) in order to form an insole blank, an insert, preferably consisting of a fiber-reinforced, in particular carbon-fiber-reinforced, polymeric material, is glued to a main body that is larger than the insert, preferably contains several functional elements and completely covers insert from the upper side, (2) the workpiece is subjected to deep drawing for long-term deformation of the insert, and (3) the surface of the main body is processed with the removal of material depending on the geometric data of the user's foot measured by the measuring device.

This item of wearing for legs has a number of significant advantages.

By means of at least one, preferably several notches in the insert of the insole extending from the recess in the heel region into the metatarsal region and the patches in the insert thus formed, a hard edge on the recess of the calcaneus insert is avoided, in particular in the region of the lower tendon plate of the wearer. . Moreover, a soft transition is formed between the first lining area, for example with soft foam, in the insole, namely in the heel area, and the second area supporting the user's foot with an insert, preferably made of a fibrous composite material. This ensures that the insert does not exert pressure on the lower tendon plate.

Further, by making the insole, in particular its main body in the metatarsal region, so that it is substantially flattened in the longitudinal direction, it is ensured that the lower heel spur of the heel and the tendon plate of the foot of the wearer remain essentially without pressure. The base body thus preferably has a so-called tendon-based geometry in the metatarsal region, which differs significantly from the foot buckling geometry, namely the convex formation of the metatarsal region, by flattening this region.

The insole design according to the invention, in particular the combination consisting of a flattened metatarsal region as well as at least one notch in the insert, thus offers the advantage that the lower tendon plate, in particular in the region of the lower heel spur, is significantly relieved .

It is particularly advantageous if the main body also has a side insert, the inner side of which is preferably convexly curved in the medial metatarsal region. As a result, the user's foot, in particular the longitudinal arch, is medially supported. The preferably convex region of the tab exerts lateral and diagonal pressure under the Tibialis Posterior on the user's foot without restricting the freedom of the plantar fascia. The insole according to the invention leaves it with maximum free space.

A further advantage of the invention is the location of the insert on the outside of the insole, preferably in a recess in the main body of the insole. Thus, the insert, firstly, is mounted flush on the main body and, thus, compactly, secondly, the lining formed by incisions in the region of the lower tendon plate under load and, therefore, when folded, the inserts are placed freely moving, in particular outward . With this freely movable arrangement of the linings, a particularly high form flexibility of the insole is achieved in the area of the tendon plate, so that it is particularly well relieved in this area. In addition, this ensures a particularly flat formation of the insole.

Further, in addition to the special geometric design of the main body, as well as the insole insert in the metatarsal region, placement of the heel and/or metatarsal pad in the heel and/or metatarsal region is particularly advantageous. Preferably, the heel and metatarsal pad spans the calcaneus recess, at least one incision, and the last in the metatarsal region. This achieves a particularly good unloading of the lower tendon plate.

The invention is explained below with the help of several examples of execution in combination with the attached drawings.

This shows:

Fig. 1 shows an embodiment of an insole according to the invention, in particular for the user's left foot, in three dimensions,

Fig. 2 - removable insole from Fig. 1 from above, that is, in a top view, with an insert located under its main body, which is indicated by a dotted line,

Fig. 3 - removable insole from Fig. 1 and 2 in an exploded view showing, individually, several components of an embodiment of an insole according to the invention.

On FIG. 1 shows an embodiment of an insole 1 for the user's left foot in a three-dimensional view. Here, the insole 1 extends in the longitudinal direction L and the transverse direction Q relative to the foot of the wearer and includes a substantially flat main body 2 which has, along with the heel region 3 as well as the metatarsal region 4, a toe region 5 in order to support and /or unload the user's foot. In particular, the insole 1 achieves a uniform distribution of pressure over the entire area of the foot. In fact, the flat main body 2 forms a side tab 22 in the heel and preferably in the metatarsal region 3, 4. It is preferably concave on its inner side 23 so that the tab 22 fits the outside of the wearer's foot. The concave flexure 24 extends, in particular, into the heel region 3. For medial support of the longitudinal arch of the user's foot, the inner side 22 of the tab 22 of the main body 1 also has a convexly curved portion 25.

An insert 13 is disposed on the lower or outer side 6 of the main body 2, respectively. , polymeric material. In particular, this makes it possible for the insert 13 to have a very low overall height, namely a thickness of preferably 0.5 to 1.2 mm, particularly preferably 0.8 mm. In order to place or, respectively, fix the insert 13 as compactly as possible on the main body 2, the main body 2 has on the outer side 6 an indent 7 for the installation of the insert 13, so that the outer side 17 of the insert 13, in essence, is tightly fitted to the outer side 6 of the main bodies 2.

Fig. 2 shows the insole 1 of FIG. 1 from above, that is, in top view. The insert 13 located below on the main body 2 is shown in dotted lines. The main body 2 itself preferably has a constriction 20, 21 in the metatarsal region 4 at least on one side, preferably on both sides, so that the main body 2 preferably conforms to the shape of the wearer's foot. The insert 13 extends from the heel region 3 into the metatarsal region 4 and has a recess 14 in the heel region 3 for the user's heel bone. Of course, it is also possible for the insert 13 to extend up to the toe area 5 of the insole 1. Further, the insert 13 includes at least one first incision 15 extending from the recess 14 in the heel region 3 into the metatarsal region 4. Preferably and as shown in In this embodiment, the insert 13 preferably has three such first incisions 15, so that at least two overlays 27, 28 are thus made. In this way, a hard edge is avoided on the recess 15 of the insert 13, in particular in the area of the lower tendon plate user. In addition, the main body 2 is substantially flattened, preferably in the metatarsal region 4 in the longitudinal direction L, so that the lower heel spur of the heel and the tendon plate of the wearer, in particular, in cooperation with at least one first incision 15 in the insert 13 to form pads 27, 28, as previously described, remain substantially free of pressure.

In addition to the first notches 15, the insert 13 preferably has additional second notches 16, of which at least one notch 16 is located preferably in the convexly curved region 25 of the side insert, as described for FIG. 1 in particular to increase the elasticity of the insole 1. Preferably, as can be seen from FIG. 2, the insert 13 has a number of second cuts 16 which extend from the outside into the insert 13, preferably laterally perpendicular to the longitudinal direction of the insole 1. This one or more second cuts 16 and at least one or more first cuts 15 are preferably wedge-shaped. . In this case, the sharp end of the wedge-shaped cuts 15, 16 is preferably in the form of a round hole, so that no sharp edge occurs in order to avoid a possible point of a given fracture when the insert 13 is bent.

On FIG. 3 shows the insole 1 of FIG. 1 and 2 in an exploded view showing, one by one, several components of an embodiment of an insole 1 according to the invention. a cover layer 10 is further provided. The backing layers 8, 9 are preferably made of soft foam such as, for example, EVA, PU or mixtures of both materials. The cover layer 10 is preferably made of microfiber, Alcantara or velor.

In the calcaneal and metatarsal regions 3, 4, the main body 2 has an additional reinforcing layer 11 with a recess 12 for the heel and tendon pad 18. The heel and tendon pad 18 is preferably made in two layers, while preferably the first layer 18.1 is located in the recess 12 of the reinforcing layer 11, and the second layer 18.2 - in the recess of the upper lining layer 9. In this case, the cushion 18 overlaps, in particular, the recess 14, at least the first cut 15 of the insert 13, as well as the insert 13 itself in the metatarsal region 4. The reinforcing layer 11 serves to increase stability shape of the main body 2, in particular in the heel and metatarsal region 3, 4. In this case, the toe region 5 is preferably made without the reinforcing layer 11, so that the bending of the toes of the wearer is not hindered. In order to elevate the transverse arch of the user's foot, the main body 2 further preferably has a pad 19, which is located according to this embodiment in the metatarsal region 4 next to the heel and tendon pad 18 between the reinforcing layer 11 and the upper lining layer 9.

On the underside of the lower lining layer 8 is fixed insert 13 with a recess 14 for the heel bone of the user. The insert 13 extends from the heel region 3 into the metatarsal region 4. Also shown are several incisions 15, 16 as described for FIG. 1 and 2. At least one, preferably several, first incisions 15 extend from the notch 14 in the heel region 3 into the metatarsal region 4. The metatarsal region 4 of the main body 2 is substantially flattened in the longitudinal direction (L), so that the lower calcaneal spur the heels and tendon plate of the user's feet remain substantially free of pressure. The outer side 17 of the insert 13 is preferably freely accessible and preferably not covered by any next layer. Thanks to such a free-moving arrangement, in particular of the linings formed by the first incisions 15, a particularly high form flexibility of the insole 1 is achieved in the area of the tendon plate, so that it is particularly well relieved in this area.

Both lining layers 8, 9 and also the reinforcement layer 11 constitute, in the heel and metatarsal region 3, 4, a side tab 22 which has a concave 24 on the inside 23. As described for FIG. 1, the flexure 25 in the medial metatarsal region 4 is convex in contrast to the medial arch support of the wearer's foot. Preferably, the insole 1 has, in particular in the convexly curved region 25, a support body 26 which can be detachably attached to the base body 2. medial support for the longitudinal arch of the user's foot.

The invention is not limited to the described embodiments, but includes all implementations that use or contain a fundamental, corresponding to the meaning of the invention, principle of operation. Further, all the features of all described and presented embodiments are combinable with each other.

Claims (15)

1. Insole (1) for shoes, having a main body (2), consisting of a heel region (3), a metatarsal region (4), and an area (5) of the fingers, while the main body (1) has an insert (13 ) extending from the heel region (3) at least into the metatarsal region (4), and in the heel region (3) has a recess (14) for the heel bone of the user, characterized in that the insert (13) has at least two incisions (15) extending from the recess (14) in the heel region (3) into the metatarsal region (4) to form at least one first lining (27, 28), and the main body (2) is substantially flattened in the metatarsal region (4) in the longitudinal direction (L), so that the lower heel spur of the heel and the tendon plate of the foot of the wearer remain essentially without pressure. 2. Insole (1) according to claim 1, characterized in that the main body (2) has a heel and/or tendon pad (18), while the pad (18) covers the recess (14) and/or at least one incision (15), and/or insert (13) in the metatarsal region (4). 3. Insole (1) according to claim 1 or 2, characterized in that the main body (2) has a pad (19) in the metatarsal region (4) for lifting the transverse arch of the user's foot. 4. Insole (1) according to one of the previous paragraphs, characterized in that the main body (2) in the metatarsal region (4) has at least one constriction (20, 21). 5. Insole (1) according to one of the previous paragraphs, characterized in that the main body (2) forms in the heel and/or metatarsal region (3, 4) a lateral, preferably on the inner side (23) a concave-curved tab (22 ). 6. Insole (1) according to claim 5, characterized in that the inner side (23) of the tab (22) in the area of narrowing (20, 21) of the main body (1) is convexly curved for medial support of the longitudinal arch of the user's foot. 7. Insole (1) according to claim 5 or 6, characterized in that the insert (13) located on the main body (2) extends into the lateral formed tab (22), in particular into the convex-curved region (25). 8. Insole (1) according to claim 7, characterized in that the main body (2) and/or the insert (13) in the convex-curved area (25) has a support body (26) attached to it with the possibility of detachment or without the possibility of detachment. 9. Insole (1) according to one of the preceding claims, characterized in that the insert (13) is made of a fiber-reinforced, in particular carbon-fibre-reinforced, polymer material. 10. Insole (1) according to one of paragraphs. 5-9, characterized in that the insert (13) in the area of the tab (22), in particular in the convex-curved area (25), has at least one second notch (16). 11. Insole (1) according to one of the preceding claims, characterized in that the insert (13) preferably has a thickness of 0.4 to 1.2 mm, particularly preferably 0.6 mm. 12. Insole (1) according to one of the preceding paragraphs, characterized in that the main body (2) on the outer side has an indent (7) for insertion (13), so that the outer side (17) of the insert (13) is essentially is tightly fitted to the outer side (6) of the main body (2). 13. Insole (1) according to one of the previous paragraphs, characterized in that at least one first and second cuts (15, 16) of the insert (13) are made in the form of a wedge. 14. Insole (1) according to one of the previous paragraphs, characterized in that the main body (2) is made of multilayer, preferably with the first and second lining layers (8, 9), as well as with the cover layer (10). 15. Insole (1) according to claim 14, characterized in that the main body (2) in the heel and/or metatarsal region (3, 4) has an additional reinforcing layer (11) with a recess (12) for the heel and/or tendon pad (18).

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