EP2210513A2 - Inlay sole, in particular for ski shoes - Google Patents

Abstract

The insole (10) has a surface area adapted at the human foot sole, where the surface area consists of a soft supporting layer. The insole has another hard layer (2). The soft supporting layer and the hard layer are partially connected to each other. The lower side of the insole is formed from the hard layer. The hard layer is provided with a recess in a heel area (18). The recess is open in one side. The recess opens in a break area (17) in the heel area. The supporting layer consists of polyurethane foam.

Description

The invention relates to an insole, in particular for ski boots and similar sports shoes, as defined below.

The subject of the present invention are insoles for sports shoes, which surround and enclose the human foot like a shell, as is the case in particular with ski boots. Other shoes included in the present invention are snowboard boots, ice skates and skating shoes (inline skating) and cross country skis.

In the case of the shoes mentioned, it is desirable, by means of the inclination of the human lower leg, to apply a very high edge loading force to a sports device connected to the shoe.

Such an edge loading force should be applied as concentrated as possible on the inner or outer edge, without burdening other areas of the shoe sole. Thus, an efficient, direct force transmission to either the outer edge or the inner edge of the sole of the foot is desired.

It is known to provide insoles that adapt to the human sole of the foot by means of a thermoforming process, in order to achieve the most flush, form-fitting adaptation possible to the sole of the foot.

It is also known (Sidas- WO19990005927A1 ) to provide a so-called clip area in the heel area in such individually adapted to the sole of the foot insoles. Such a clip region is understood to mean a hard ring closed on the back, which completely surrounds the heel region at the rear back, so as to enable a support action on the rear region of the heel.

Such a design of an individually adjustable insole in a ski boot with a closed heel area, however, has proven to be disadvantageous. Because it's a heel-side closed ring, which encloses the heel, it is not possible to exert an edge loading force on this insole without great loss of power. Namely, each edge load force is transmitted via the closed heel ring from the one side, where the edge is to be loaded, also undesirably on the opposite side, which should not actually be loaded, so that thus initiated only an ineffective or poorly effective edge loading force becomes.

It is therefore disadvantageous to arrange such a closed ring in the heel area.

In the known insoles another shock absorber is arranged in the interior of the approximately U-shaped ring, which dampens the force exerted by the human heel on the insole force.

In summary, it can be stated that in the case of the known insoles which are suitable for the abovementioned sports shoes, there is the disadvantage that a band enclosing the heel area is provided, which prevents a tilting force introduced on an inner or outer edge solely on this outer edge acts. In an undesirable manner, this tilting force is also initiated on the opposite side, which leads to a splitting of the force component and thus weakens the targeted force on the edge.

The invention is therefore based on the object, an insole, in particular for ski boots and the like shoes so that with high efficiency, an initiating force can be initiated only on one side of the insole, the other, opposite side of the sole thereof is not affected.

To solve the problem, the invention is characterized by the technical teaching of claim 1.

An essential feature of the invention is that the insole consists of at least two differently hard, at least partially superimposed and at least partially interconnected layers, namely a relatively soft carrier layer and a harder hard layer, that the top of the insole is formed by the softer support layer and that the underside of the insole is formed by the hard layer and further that the hard layer is provided in the heel area with a one-sided open recess extending from the heel area to about in the midfoot area and rear ends in the heel area in an interruption area, which is formed by the soft carrier layer ,

Thus, the essential advantage is achieved that the deliberately selected hardness of the hard layer in the bottom region of the insole is interrupted in the heel area and hereby a heel guide is achieved, which makes it possible to transfer the force acting on the soft carrier layer on one side of the hard layer edge side in the heel area, without the opposite edge side of the hard layer is affected by this force.

Thus, an interruption of the hard layer in the heel area is deliberately brought about, so that there is an interruption of the hard layer in the heel area, which prevents a canting force introduced on the hard layer from being transferred from one edge of the hard layer to the opposite edge.

This ensures that a tilting force is always introduced only on one side of the hard layer and thus acts as optimal Verkantungskraft over the entire length of the insole, while the opposite side in the heel area is not affected, because the interruption in the hard layer is a Power transmission of this Verkantungskraft on the opposite - not loaded side - prevents the insole.

Thus, the force vectors, which act on the soft carrier layer in the sense of a tilting force, are transferred to the underside of the insole in the form of a divided force component, ie the essential part of this tilting force is now introduced onto a single side of the hard layer, while due to the interruption in the heel region of the hard layer, the force component which should be introduced into the other side, is interrupted.

The invention thus goes the opposite way in the prior art, because in the prior art, the rear heel area was deliberately closed by a band or by a clamp, which is avoided in the present invention.

A further advantage in realizing the present invention is that the targeted interruption of the hard carrier layer in the heel region now achieves a forceps effect which additionally encloses, supports and guides the heel.

According to the invention, the previously mentioned recess is arranged on the heel-side underside of the hard shell, which is approximately pear-shaped or oblong formed as a one-sided recess extending in the direction of its longitudinal extent approximately parallel or obliquely to the central longitudinal axis of the insole. This is a return in the hard layer, because the hard layer is excluded in this area and behind the back of the softer support layer is arranged.

Now, if a heel pressure acts on the soft carrier layer from above, then this heel pressure is passed directly from above into the elongate recess and this deforms downwards through the recess in the hard layer, the hard layer setting up like a pliers and enclosing and closing the heel ,

Thus, a much better guiding effect on the heel area of the human foot in a ski boot or the like is achieved and a better traction is achieved from the heel to the ski boot. The pincer-like heel closure is stronger, the stronger the pressure force from above.

In a development of the present invention, it is additionally provided that a so-called pad is arranged in the midfoot area. Such a pad is a deformation on the underside of the hard layer, which deforms the hard layer in an upward direction in the direction of the softer support layer, so that the softer support layer forms an approximately olive-shaped bulge on the upper side, which against the underside of the human foot.

Such a pad has the advantage that at a longitudinal displacement force, which is exerted parallel to the surface of the insole of the foot on the insole, this pad absorbs this displacement force and thereby better longitudinal guidance of the human foot is given on the insole.

This pre-slipping the foot is prevented on the insole, and thus the state of the sole of the insole is significantly improved.

In the present invention it is provided that the insole according to the invention is inserted into the inner boot of a ski boot, so that the inner boot itself rests with its underside on an associated sole of the ski boot itself.

In this case, one would remove the conventionally arranged in the ski boot insole to bring the insole according to the invention with high efficiency for use.

In other sports shoes, which were mentioned in the introduction, there is usually no liner. For these sports shoes it is sufficient to remove the factory-installed in the sports shoe light insole and replace it with the insole of the invention.

For the sake of simplicity, it is assumed in the following description that the human foot rests directly on the insole according to the invention and the insole according to the invention rests directly on the inner surface of the sports shoe.

Although the invention is not limited thereto, this embodiment is used for ease of description.

According to the present invention, it is important in the present case for the underside of the insole arranged on the shoe side to have a hard layer which extends essentially over the entire surface of the insole, including the heel region, and an approximately elongate recess is arranged only on the underside in the hard layer. which forms an open channel in the direction of the soft carrier layer and forms an interruption in the heel area, so that only the soft carrier layer acts in this area.

The fact that the hard layer also extends into the heel area and is interrupted only by a narrow recess there, there is the advantage that not two different plates are defined - as known in the art - but a continuous hard layer as the base plate Insole is present whose mechanical properties are modified only in the heel area.

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the abstract, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are novel individually or in combination with respect to the prior art.

In the following the invention will be explained in more detail with reference to drawings showing only one embodiment. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

Show it:

FIG. 1:

schematizes the bottom view of an insole according to the invention

FIG. 2:

the rear view on the insole towards II in FIG. 1

FIG. 3:

the cross-section through the insole at the level of III-III in FIG. 1

FIG. 4:

schematizes the deformation of the insole under the action of a tilting force with representation in the heel area

FIG. 5:

the same representation as FIG. 5 with an oppositely acting tilting force

FIG. 6:

the longitudinal section through the insole in the direction of the arrow VI-VI in FIG. 8

FIG. 7:

the side view of the insole

FIG. 8:

the top view of two paired insoles showing details

FIG. 9:

the heel view of the insole

FIG. 10:

Section according to the line XX in FIG. 1

It is generally noted in the drawings that the white and light gray components in the drawings, e.g. B. 1 and in the heel area 18, the soft carrier layer, while the dark components, for. B. 2, 2a, 2b, represent the hard layer in the drawings.

The soft carrier layer consists for example of a PU molded foam having a Shore hardness in the range between 30 and 40, while for the hard layer a Shore hardness in the range of 50 to 60 is used.

That is, the two layers 1, 2 differ by a Shore hardness of at least 10 to 15.

In essence, namely, the Verkantungskraft is registered by the hard layer 2 on the outer edge of the insole and the softer support layer 1 is only the pressure distribution in order to achieve the most uniform and uniform distribution of pressure forces from the human sole to the insole.

For this reason, it is also provided that the soft carrier layer extends substantially over the entire upper side of the insole from front to back, wherein a pad may be arranged as needed in the midfoot region.

The hard layer 2 does not have to be formed of a foamed PU material. Other materials may be used, such as: As a PP material or a PE material or a plastic with fiber composite material.

In FIG. 1 the underside of the insole 10 is shown. It can be seen that the hard layer 2 extends practically over the entire surface of the insole, which can be roughly divided into a forefoot area 11, a midfoot area 12 and a heel area 13.

If necessary, in the midfoot region 12, the aforementioned pad 21 can be arranged. This is an impression in the hard layer 2, which is directed upwards and, for example, from the section in FIG. 3 and FIG. 6 is recognizable.

It is important that the hard layer 2 also extends into the heel area and thereby forms arcuate areas 2a and 2b, so that the Heel load force is absorbed by these arcuate portions 2a, 2b and transferred to the carrier layer.

According to FIG. 1 the insole 10 according to the invention consists of a rear pressure shell 31, which preferably surrounds the heel region 13, this pliers-like manner and leads and from an adjoining pressure plate 30 which is suitable to distribute the pressure forces introduced by the forefoot 10 on the insole 10 over a large area.

It is important that an elongated recess 5 is present in the hard layer 2 on the underside of the insole 10. This elongated recess 5 forms in the upper region, essentially in the midfoot region 12, an arc 14, which merges into a connection region 15, which in turn merges into a larger rounded heel pressure region 16, which in turn merges into an interruption region 17, which ensures that the hard layer 2 is not formed continuously in the heel area, but is interrupted. In this area, rather, a guide portion 18 is provided for the heel, which is formed from the soft carrier layer.

The shape of the recess 5 is not necessarily necessary in the described manner. after the FIG. 1 shows the right insole for the right foot from below, it can also be seen that the longitudinal axis of the recess 5 forms an angle to the central longitudinal axis of the insole 10. This is due to the fact that, in this case, a larger-area inner area 2a results on the right-hand side compared to a narrower outer area 2b. Thus, a much larger tilting force can be exerted on the inner edge of the insole 10, as compared to the outer edge, which is particularly important when skiing.

The comparison of FIG. 1 to FIG. 2 shows that the hard shell is also drawn around a shell around the heel, namely forms a local outer area 9, which is formed by two separate web portions 7, 8.

Thus, it is clear that there is no connection in the hard layer in the heel area, because the two web areas 7, 8 are interrupted by the interruption area 17 and in this area the softer support layer 1 comes to light.

This results in there an approximately arcuate guide portion 18 for the heel.

The FIG. 2 shows, moreover, that the interruption also forms an arcuate portion 6, ie a deviating from the horizontal, convex upward arc, which performs a forceps-like movement of the heel area, as will be described below.

For example, if an application of force in the direction of arrow 20 on the heel area - as in FIG. 2 shown - then this force is transmitted through the soft carrier layer 1 in the interruption region 17 between the web portions 7, 8 of the hard layer and strikes the arc portion 6, which thus convexly bends downwards. As a result, a torque is generated on the two web portions 7, 8 of the hard layer, and these move in the direction of arrow 19 upwards and thus form a pair of pliers, which includes the heel and leads. This effect is also due to the in FIG. 10 illustrated construction of the concave recess in the hard layer 2 and the carrier layer 1 caused.

Thus, the greater the pressure on the heel, the better the force exercised by the pincer movement from the insole to the heel.

The FIGS. 4 and 5 show the main advantages of the invention, where it can be seen that upon application of force directed in the direction of arrow 20 oblique force and this force only and almost exclusively on the respective lower land area 8 in FIG. 4 or 7 in FIG. 5 is initiated and the respective other land area is not affected by this Verkantungskraft.

This makes it clear that the obliquely introduced in the direction of arrow 20 total force is split into two mutually perpendicular components that act only on one side of the insole, while the other side of the insole is not affected. This shows the high effectiveness of a tilting force and its transmission to a single side of the insole.

The FIG. 3 shows a section along the line III-III in FIG. 1 which passes essentially through the pad 21. It can be seen that this consists of a recess 22, which has been formed by an impression, which deforms the hard layer 2 upwards and at the same time entrains the soft carrier layer in the form of an upwardly deformed support surface 25.

Accordingly, when a longitudinal displacement force in the direction of arrow 27, as in FIG. 6 Visible on the top of the insole should be absorbed by the pad, so that the foot on the insole can not slip.

Out FIG. 3 Incidentally, it can still be seen that the hard layer 2 is pulled up at the edges in the form of edge regions 23 and also adjoins these raised edge regions of the hard layer 2 by further raised edge regions 28 of the softer carrier layer 1 adjoining them.

In this way it is ensured that the foot on the insole also has a good lateral guidance.

The FIG. 6 shows a central longitudinal section through the insole 10, where it can be seen that the heel area, formed by the carrier layer 1, is open and the hard layer 2 does not extend into the central region in the heel region of the insole.

The footprint or footprint of the insole 10 continues from the heel area forward and has the same plane as in FIG Connection area, where the hard layer 2 connects to the softer support layer 1.

Furthermore, it can be seen that in the heel pressure region 16, the recess 3 is arranged, which ensures that a pressure on the heel ball is damped and a forceps effect arises, as he said FIG. 2 was explained.

The FIG. 7 shows the side view of the insole according to the invention, where it can be seen that the hard layer 2 like a shell extends approximately from the midfoot region 12 to the rear and there yields the raised edge areas 23, as shown in FIG. 3 is explained. Above these edge regions 23, the soft edge regions 28 of the carrier layer 1 close.

These conditions are especially still in FIG. 10 shown, which shows a section through the heel area.

There, it can be seen that the hard layer 2 is pulled up with the edge-side regions 23, to which the softer edge layers or edge regions 28 of the carrier layer 1 adjoin.

In FIG. 8 is a pair of inventive insoles shown from the underside, where it can be seen that the respective recesses 5 are directed obliquely to the longitudinal center axis of the insole 10 to allow large-scale interior areas compared to smaller-scale outdoor areas.
It can also be seen that the interruption region 17 forms a mutual distance 29 between the two hard shell regions converging there. This distance 29 is about 10 mm. However, it can be changed within wide limits.

The FIG. 9 shows the heel view of an insole according to the arrow IX in FIG. 8 , and it can be seen again that the two edge regions 23 of the hard layer extend there in the form of a flap in the form of an inner and outer region and are interrupted by the interruption region 17 in the middle of the heel region.

The sole according to the invention is predominantly prefabricated, but in principle it can also be made individually customizable. <B><u> Drawing Legend </ u></b> 1 Backing layer (soft) 17 interruption region 2 hardcoat 18 Leadership area (for 2a indoor area Heel) 2b outdoor area 19 arrow 3 Recess (in hard layer) 20 arrow 4 heel cup 21 pelotte 5 Recess (hard layer) 22 recess 6 arch area 23 Edge area (hard layer) 7 web region 24 footbed 8th web region 25 support surface 9 outdoors 26 Floor space 10 insole 27 arrow 11 forefoot 28 border area 12 midfoot (Carrier layer) 13 heel 29 distance 14 bow 30 printing plate 15 connecting area 31 pressure shell 16 Heel pressure area

Claims (15)

Insole, in particular for ski boots and similar sports shoes, having a surface substantially adapted to the human foot sole, consisting of a soft carrier layer (1), characterized in that a.) the insole (10) consists of at least two differently hard, at least partially superimposed and at least partially interconnected layers (1, 2), namely a relatively soft carrier layer (1) and a harder hard layer (2), b.) that the underside of the insole (10) is substantially formed by the hard layer (2) c.) further that the hard layer (2) in the heel region (13) is provided with a recess (3) open on one side, which opens in the heel region (13) into an interruption region (17) formed by the soft carrier layer (1) , Insole according to claim 1, characterized in that the lower side of the insole arranged on the shoe side has a hard layer (2) which extends substantially over the entire surface of the insole and only an approximately oblong recess (2) on the heel-side underside of the hard layer (2). 3), which forms an open channel (15, 16) in the direction of the soft carrier layer (1) arranged above it and forms an interruption in the heel region (13), so that only the soft carrier layer (1) acts in this region. Insole according to claim 1 or 2, characterized in that the recess (3) extends from the heel region (13) approximately into the midfoot region (12). Insole according to one of claims 1 to 3, characterized in that the hard layer (2) is interrupted in the bottom region of the insole in the heel area and hereby forms a heel guide, which on the soft Carrier layer (1) obliquely acting force (F_ges) on one side of the hard layer (2) on the edge side in the heel region (13) transmits. Insole according to one of claims 1 to 4, characterized in that by the targeted interruption of the hard carrier layer (2) in the heel region (13) a forceps effect is formed, which also includes the heel, supports and guides. Insole according to one of claims 1 to 5, characterized in that on the heel-side underside of the hard shell (2) the recess (3) is arranged, which is approximately pear-shaped or oblong than unilaterally open recess (3) in the hard shell (2) , which extends in the direction of its longitudinal extent approximately parallel or obliquely to the central longitudinal axis of the insole. Insole according to one of claims 1 to 6, characterized in that the soft carrier layer consists of a molded PU foam with a Shore hardness in the range between 30 and 40, while the hard layer has a Shore hardness in the range of 50 to 60. Insole according to one of claims 1 to 7, characterized in that in the midfoot region (12) a pad (21) is formed as an embossment in the hard layer (2), which is directed upwards and the softer support layer arranged above it in the direction of the sole of the foot bulges. An insole according to any one of claims 1 to 8, characterized in that the hard layer (2) to the heel portion extends and forms arcuate portions (2a and 2b) which receive the Fersenbeiastungskraft and transferred to the carrier layer (1). An insole according to any one of claims 1 to 9, characterized in that the insole (10) consists of a rear pressure shell (31) which surrounds the heel region (13), this comprises pliers and leads and out an adjoining pressure plate (30) which distributes the pressure forces introduced by the forefoot on the insole (10) over a large area. An insole according to any one of claims 1 to 10, characterized in that the elongated recess (5) in the midfoot region (12) forms an arch (14) which merges into a connecting region (15) which in turn is formed into a larger rounded heel pressure region (16). which in turn merges into an interrupting region (17) which interrupts the hard layer (2) in the heel region and in that region is provided a heel guide region (18) formed of the soft support layer (1). Insole according to one of claims 1 to 11, characterized in that the longitudinal axis of the recess (5) forms an angle to the central longitudinal axis of the insole (10). Insole according to one of Claims 1 to 12, characterized in that the hard shell (2) is drawn around the heel in the shape of a shell and forms an outer region (9) which is formed by two mutually separate web regions (7, 8). Insole according to one of claims 1 to 13, characterized in that the interruption region (17) in the soft carrier layer (1) forms a bottom-side (lower-side) arc region (6), which is formed as a deviating from the horizontal, convex upward arc is that performs a forceps-like movement of the heel area when pressure from above. Insole according to one of claims 1 to 14, characterized in that the hard layer (2) is pulled up at the edges respectively in the form of edge regions (23) and to the raised edge regions of the hard layer (2) further, aligned adjoining raised edge regions (28 ) of the softer carrier layer (1).

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