WO2012084243A1

WO2012084243A1 - Insert for a shoe and shoe having such an insert

Info

Publication number: WO2012084243A1
Application number: PCT/EP2011/006494
Authority: WO
Inventors: Stefan Huhn
Original assignee: Littec Gmbh
Priority date: 2010-12-22
Filing date: 2011-12-21
Publication date: 2012-06-28
Also published as: EP2654479A1; DE102010055709A1

Abstract

The invention relates to an insert for a shoe having a heel, comprising: an upper face and a lower face, wherein the upper face has a flat or concave longitudinal profile on a rear end of the insert, which longitudinal profile, in longitudinal direction to a front end of the insert at a first location on the upper face, merges into a convex longitudinal profile; a first wing formed from the first location transversely with respect to the longitudinal direction having a first wing end; and a second wing likewise formed from the first location transversely with respect to the longitudinal direction, but in the opposite direction to the first wing, having a second wing end, wherein the upper face has a concave transverse profile between the wing ends in a first section which encloses the first location. The invention also relates to a shoe having such an insert.

Description

INSERT FOR A SHOE AND SHOE WITH SUCH AN INSERT

The invention relates to an insert for a shoe, in particular for a ladies shoe with high heel, and a shoe with such an insert.

The human foot is complex and has an inner and an outer longitudinal arch and a transverse arch. Therefore, when the foot is placed on a level ground, not the entire sole of the foot has contact with the ground, but only individual areas, such as the heel or ball of the foot, which carry the bulk of the body weight. If the foot is placed in a shoe with a high heel, it comes in comparison to a significant change in the weight distribution, whereby the ball area is much stronger and the heel area significantly less burden than when putting the foot on a flat floor.

In order to alleviate the increased load on the ball area in such high-HeeP shoes, inserts are used which are inserted as partial inserts into the foot ball area of such ladies' shoes. Such conventional inserts may for example be equipped with a padding of gel or foam. Although this achieves improved damping, it does not change the weight distribution. Rather, the ball area is further narrowed in a high-heel shoe and thus built an additional pressure on the bale.

It is therefore an object of the present invention to provide an insert for a shoe with a heel, in particular a high heel women's shoe, and a shoe including such an insert with improved support and stabilization of the foot to avoid overstressing the foot and prolonged use associated fatigue phenomena to avoid.

To achieve this object, the insert according to the invention for a shoe, in particular with a heel, in particular for a ladies shoe with heel, comprises an upper side and a lower side, wherein the upper side has a flat or concave longitudinal profile at a rear end of the insert towards the front of the insert merges into a convex longitudinal profile at a first location on the top. The insert further comprises a wing formed transversely to the longitudinal direction from the first location with a first wing tip and a first from the first location also transverse to the longitudinal direction, but in the opposite direction to the first wing formed second wing with a second wing tip, wherein the top between the wing tips in a concave transverse profile (that is, in a direction transverse to the longitudinal direction) has a first section, which includes the first location. At the front end of the insert, the upper side preferably has a concave longitudinal profile which merges longitudinally towards the rear end at a second location on the upper side into a convex longitudinal profile, the upper side preferably being in a second section which encloses the second location has convex transverse profile.

The special longitudinal and transverse concave profile of the top of the liner at the back (heel) end provides heel support when using the liner in a high heel shoe, thereby providing improved weight distribution. Due to the concave longitudinal profile at the front end of the insert and the substantially convex longitudinal profile between the front and rear end, this weight acting on the rear end of the insert can be transferred to the shoe via the front end. In addition to the support and stabilization of the heel area with the help of the both longitudinal and transverse concave profile at the rear end of the insert, the convex transverse profile in the second section serves to prevent a lowering of the transverse arch in the area of the metatarsal bones.

In sum, therefore, a better weight distribution is achieved by the special design of the insert, which reduces the burden of football and leads to a total weight distribution, which is similar to that when placing the foot on a flat floor. This insert has particular advantages and achieves said effect in a particularly advantageous manner, especially in women's shoes with a high heel, especially at heels from about 3 cm, especially at very high heels from about 5 cm.

FIG. 4 schematically shows a sole of the foot and a foot in two different positions, wherein the sole of the foot represents the areas of the loading surfaces on the sole. In side view, the foot is shown once when placed on a flat surface, as compared to a foot as it would be placed when there is a heel lift (this heel lift is not shown).

The insert according to the invention ensures that the foot is held better, so that there is a better and more evenly distributed weight distribution, which reduces the burden of football, which leads to a more stable running and to less fatigue and stress phenomena, so that the risk of caused damage to the foot is significantly reduced.

Preferably, the insert is adapted to support over the first portion a part of the foot behind the Lisfranc joint, in particular the heel bone, and partly to enclose with the help of the two wings and thus to stabilize against lateral displacement.

Preferably, the insert is further adapted to support over the second portion a part of the foot in front of the lisfranc joint, in particular at least one and at most three of the metatarsal bones. In a particularly preferred embodiment, at least one of the middle three metatarsal bones is supported, thereby assisting the transverse curvature of the foot in this area.

The insert preferably has a recess for the heel bump at the rear end. In this way, the dorsal end of the heel bone may rest on the actual shoe insole, whereas the front part of the heel bone rests on both the longitudinal and transverse concave rear end of the insert. The insert thus adapts to the anatomy of the foot at this point, thus avoiding an uncomfortable pressure point in the area of the heel bone and therefore providing a further improved support of the foot and increasing the wearing comfort.

The first section preferably extends at least between the first location and one of the two wing ends. More preferably, the first portion including the first location extends from the first wing tip to the second wing tip. As a result, a cup-shaped enclosure of the foot, especially of the heel bone is thus achieved, whereby a high lateral stability of the foot is achieved in the shoe. Preferably, on the upper side, the first location has a maximum distance of less than 2 cm, more preferably less than 1 cm, to a shortest connecting line along the upper side between the two wing tips. This ensures that exactly the part of the foot is secured against lateral slippage, which transfers a large part of the weight to the first section.

Preferably, the underside of the insert has a first contact surface at the front end of the insert and a second contact surface at the rear end of the insert, wherein the insert is adapted to (weight) forces acting on the upper side, in particular on the first or the second Section, act to transfer only on the first contact surface and the second contact surface on the shoe. As already indicated above, the weight taken up in the first section is transferred to the shoe via the first contact surface at the front, longitudinally concave end of the insert. To improve the weight distribution, a second contact surface is also provided at the rear end, which is also concave in the longitudinal direction.

In a particularly preferred embodiment, the insert consists of a rigid material. As a result, the above-mentioned power transmission from the first portion to the front, in the longitudinal direction concave end and thus the support of the foot over the first portion is ensured. In a particularly preferred embodiment, the insert comprises a third section, which includes the first and second location and each consists of a substantially rigid material, in particular of thermoplastic material.

Preferably, the concave curvature in the longitudinal profile at the front end of the insert is greater than the concave curvature in the longitudinal profile at the rear end of the insert so as to provide a heel-end fitted support surface at the rear end and also in a high heel shoe, i. large pitch, the front end with a large concave curvature can suitably put on the front of the flat shoe sole.

Preferably, the insert has such a dimension in the longitudinal direction (ie between the rear and front end) that the insert when used in a shoe before at least one of the toe joints, ie in the region of the metatarsals, ends. According to the present invention, a shoe, in particular with a heel, in particular a high heel women's shoe is also provided, which comprises the insert described above.

An insert may be provided as a separate element and placed in the shoe so that it can also be removed again. But it is also possible that the insert is at least partially connected to the shoe or even integrally or integrally formed with the shoe, so that in particular the insert from the shoe is not removable and is virtually realized as part of the shoe itself.

Further details and advantages of the present invention will become apparent from the figures described below.

Fig. 1 is a view of an embodiment of the insert according to the invention in a ladies shoe with high heel;

Fig. 2 is a schematic representation of the longitudinal profile on the upper side of an embodiment of the insert according to the invention;

3A / 3B are cross-sections of an embodiment of the insert according to the invention at the first and second point on the upper side;

Fig. 4 shows representations of a foot, which has been referred to in the general description for explaining the invention.

An embodiment of the insert 10 according to the invention and of a shoe 100 with such an insert 10 is shown in FIG. The shoe 100 is a women's shoe with a high heel, so the shoe insole has a high pitch at the rear of the heel, whereas it is nearly flat at the front without liner 10, therefore, relatively little weight is transferred from the heel region of the foot to the back region of the shoe, resulting in an increased weight load of the footing.This overload of the ball area is avoided by means of the insert 10, as follows will be explained in more detail. The insert 10 shown in FIG. 1 has an upper side 12 and a lower side 14. Further, the insert 10 has a rear end 16 and a front end 18 in the longitudinal direction, wherein the dimension of the insert 10 is held in the longitudinal direction such that the front end 18 of the insert 10 when used in the shoe 100 well before the front end of the shoe 100, hence the toe area ends.

As can be seen in Fig. 1, at the rear end 16 of the insert 10 there is provided a recess 20 which is designed so that the dorsal end of the heel bone rests on the shoe inner sole, whereas the remainder of the heel bone rests on the rear end 16 of the insert 10 rests.

In the heel area at the rear end 16, the insert 10 expands in two wings 22, 24 formed transversely (ie approximately perpendicular to the longitudinal direction). The two wings 22, 24 extend from a first location 26 transversely to the longitudinal direction of the insert 10 opposite sides. The first location 26 is located in a first portion 28 which extends in the embodiment shown in Fig. 1 between the first vane end 30 of the first vane 22 and the second vane end 32 of the second vane 24 on the top 12 of the insert 10. From the first location 26 to the front end 18 of the insert 10, the insert 10 has a tongue shape.

On top 12 is located between the first location 26 and the front end 18 of the insert 10, a second location 34, which lies in a second portion 36. The second section 36 serves to support the transverse arch in the region of the metatarsal bones, for which reason the upper side 12 of the insert 10 in the second section 36 has a convex transverse profile.

Fig. 2 shows a longitudinal profile of the top 12 of the insert 10, which passes through the first location 26 and the second location 34, both of which are indicated in Fig. 2. The longitudinal profile of the upper side 12 of the insert 10 has at the rear end 16 a concave curvature, which merges in the longitudinal direction to the front end 18 in a convex curvature at the first location 26. By this transition, therefore, the location of the first location 26 is defined. Furthermore, the upper side 12, as also shown in FIG. 2, at the front end 18 also has a concave, but compared to the curvature at the rear end 16 stronger curvature in the longitudinal direction, in the longitudinal direction to the rear end 16 in a convex Curvature at the second place 34 passes. As a result, the location of the second location 34 is defined.

In Fig. 2, the insole of the shoe 100 is further indicated by the dashed line. It can be seen that the region near the rear end 16, due to its concave curvature, is suitable for absorbing weight from the foot, especially the heel bone, and via a first contact surface 38 at the front end 18 on the underside 14 of the insert indicated schematically in FIG 10 and also indicated second contact surface 40 at the rear end 16 on the bottom 14 of the insert 10 to the shoe 100 to transfer.

In FIG. 3A, a transverse profile of the upper side 12 of the insert 10 in the first section 28 through the first location 26 is shown. In Fig. 3A, the concave curvature in the transverse direction between the two wing ends 30 and 32 can be seen, wherein the first wing end 30 relative to the first location 26 is significantly higher than the second wing end 32. The first, outer wing 22 is thus adapted to to surround the outside of the foot behind the Lisfranc joint, whereas the second wing 24 serves as a support surface for the inside of this part of the foot due to its lower curvature.

In FIG. 3B, a transverse profile of the upper side 12 in the second section 36 through the second location 34 is shown. It can be seen that around the location 34 the top 12 has a convex curvature in the transverse direction. It should be noted that the insert 10 in the transverse direction in the second section 36 is dimensioned significantly smaller than the shoe 100 and thus the foot. Namely, the second portion 36 serves to support at least one and at most three of the inner metatarsal bones and thus to assist the transverse curvature of the foot in this area. As a result, more weight is transmitted to the shoe 100 via the outer two metatarsal bones, whereby a weight distribution is achieved which is similar to that on a level floor.

The insert 10 is, at least partially, formed of a rigid or substantially rigid material which is suitable, even in persons with high weight, for example up to 100 kg or even more weight above the aforementioned power transmission in particular from the first section 28 allow the front end 18 of the insert 10 on the shoe 100. In the present embodiment, a thermoplastic material, for example Plexidur, is used for this purpose. In particular, the insert can also be made up of different layers, for example with a rigid lower layer or a rigid core layer which partially, on one side or on both sides, comprises a softer upper layer or overlay.

The rigid or substantially rigid material is provided in particular in all the areas defined in the claims, or advantageously the rigid material forms in particular all the areas defined in particular in claim 1 and claim 2.

The features of the invention disclosed in the foregoing description, in the drawings and in the claims may be essential both individually and in any combination for the realization of the invention in its various embodiments.

Claims

claims

1. pad for a shoe with heel, in particular a ladies shoe with heel, which comprises

an upper side (12) and a lower side (14), wherein the upper side (12) at a rear end (16) of the insert (10) has a flat or concave longitudinal profile which extends longitudinally to a front end (18) of the insert (10). 10) at a first location (26) on the upper side (12) merges into a convex longitudinal profile,

a first wing (22) formed transversely to the longitudinal direction from the first location (26) having a first wing end (30) and a second wing (22) also transverse to the longitudinal direction but opposite to the first wing (22) 24) with a second wing end (32),

wherein the top (12) between the wing tips (30, 32) has a concave transverse profile in a first portion (28) which encloses the first location (26).

2. Insert according to claim 1, wherein the top (12) at the front end (18) has a concave longitudinal profile which in the longitudinal direction to the rear end (16) out at a second location (34) on the top (12) in a convex Transverse longitudinal profile passes, wherein the upper side (12) in a second portion (36) which encloses the second location (34) has a convex transverse profile.

3. Insert according to claim 1 or 2, which is adapted to support over the first portion (28) a part of the foot behind the Lisfranc joint, in particular the heel bone, and with the help of the two wings (22, 24) partially to enclose.

4. Insert according to one of the preceding claims, which is adapted to support over the second portion (36) a part of the foot in front of the Lisfranc joint, in particular at least one and at most three of the metatarsal bones.

5. insert according to one of the preceding claims, which at the rear end (16) has a recess (20) for the heel bump.

A liner according to any one of the preceding claims, wherein the first portion (28) extends at least between the first location (26) and one of the two wing tips (30, 32).

A liner according to any one of the preceding claims, wherein the first portion (28) extends from the first wing end (30) to the second wing end (32).

A liner according to any one of the preceding claims, wherein on the upper side (12) the first location (26) has a maximum distance of less than 2 cm, in particular less than 1 cm, to a shortest line of connection along the upper side (12) between the two has two wing ends (30, 32).

9. Insert according to one of the preceding claims, wherein the underside (14) of the insert (10) has a first contact surface (38) at the front end (18) of the insert (10) and a second contact surface (40) at the rear end (16). the insert (10), wherein the insert (10) is adapted to forces acting on the upper side (12), in particular on the first or the second portion (28, 36), and on the first contact surface (38). and to transfer the second contact surface (40) to the shoe (100).

10. Insert according to one of the preceding claims, wherein the insert (10) consists of a rigid material, in particular of thermoplastic material.

11. The insert according to claim 1, wherein at least a third portion of the insert, which includes the first and second location (26, 34), consists of a substantially rigid material, in particular of thermoplastic material.

12. Insert according to one of the preceding claims, wherein the concave curvature in the longitudinal profile at the front end (18) of the insert (10) is greater than the concave curvature in Längspro fil at the rear end (16) of the insert (10).

13. shoe, in particular women's shoe with heel, which comprises an insert according to one of claims 1 to 11.

14. Shoe according to claim 13, wherein the insert is at least partially fixedly attached to the shoe and / or formed integrally and / or integrally with the shoe.