WO2014068128A1

WO2014068128A1 - Sole for shoes or sandals

Info

Publication number: WO2014068128A1
Application number: PCT/EP2013/072998
Authority: WO
Inventors: Stefan Lederer
Original assignee: Stefan Lederer
Priority date: 2012-11-05
Filing date: 2013-11-05
Publication date: 2014-05-08
Also published as: DE102012110573A1

Abstract

The invention relates to the sole (3) for shoes or sandals which is a layered composite, comprising the following arranged one below the other: a rigid insole (4), an insert (6) made of a hard plastic, which extends in the center region (11) of the sole (3) and is curved convexly downward, a soft intermediate layer (5), which lies below the insert (6) and extends across the entire length of the sole (3) and has, in the upper center region thereof, a course that is complementary to the course of the insert (6) due to a concave recess (15), a lower rigid support plate (7), which extends across the entire length of the sole (3) and is provided with at least one transverse and/or longitudinal interruption (24, 25, 26), forming a plurality of plate parts (27, 28, 29) lying next to each other and/or one behind the other, and at the bottom an outsole (8).

Description

Sole for shoes or sandals

The invention relates to a sole for shoes, as it is generally used for shoes of different categories, e.g. for street shoes, sports shoes, light hiking shoes or sandals. Long-term considerations have shown that when walking and running occurring

Shock stresses due to the predominantly used soles are still transmitted in a damaging manner to the knee, hip and spine.

Thus, from DE 20 2007 001 915 Ul a shoe insert is known which consists of an elastic body, on the underside in the central region of an elastic molded body is arranged, whose side facing away from the base body is convex and the function of a

Roll-off cushion takes over. In this case, the elastic base body has a higher degree of hardness than the elastic molded body, wherein at the top of the body an anatomical footbed is formed. This shoe insert is not in the inserted state on the underside of the flat insole surface of the shoe, but adapts to it only by the weight of the wearer and to the longitudinal curvature of the foot. Here, the insole used in the shoe should produce a similar effect as an externally attached to the outsole metatarsal. Due to the possible strength of the shoe or its sole and the high elasticity of the molding such a roll-off effect is probably not or not sufficiently achievable.

The KR 100 825 433 Bl describes a sole construction for Maasai walking shoes made in the There are essentially three layers, namely an upper, harder midsole, a soft intermediate layer and an outsole. In the hard middle layer is a stiffening and

Integrated spring plate. In addition, it has a lower indentation in the rear area, into which a corresponding convex bulge of the soft intermediate layer flies. The underside of the sole construction is relatively strong curly overall, creating a strong

Rolling and rocking is possible, but with insufficient stability and pressure distribution.

DE 201 07 343 Ul discloses a running shoe with elastic sole material, in whose lower, outsole-side region stiffeners are incorporated, but only in the

Heel and middle area extend.

EP 0 214 431 B1 discloses a sole construction for sports shoes, in which three layers or sections are provided between an upper intermediate layer and lower outsole, namely a resistant heel section, a flexible toe section and, in between, a wedge-shaped, harder core section. This is probably a rolling rockers possible, but no stable secure pressure distribution on the entire foot.

In WO 2010/136 513 AI a composite sole is described, which consists of an upper hard tub, a soft intermediate layer with a hard, down concave ausbuchenden hard use and an outsole. In the middle range is between hard use and softer

Interlayer inserted a stiffening and spring plate, to Improemng the spring action of the sole. However, the foot-side pan does not have sufficient rigidity to hold the elastic composite sole. Finally, US 4,241, 523 shows a sole structure with a foot-side hard tub, on the underside of hard, downwardly wide curved arches in the heel and ball area available. These are filled with soft plastic, this plastic also fills the toe area in slightly forward pointed shape and the entire structure is covered on the underside with an outsole. Although this can be very extensively unrolled and rocked, but without adequate stability and support of the foot.

The present invention is therefore based on the object, a sole for shoes or

Specifying sandals that improve the spring and rolling action, while at the same time supporting the natural step and distributing the pressure optimally over the entire foot surface. This object is achieved by a sole according to claim 1. Advantageous developments of the invention are specified in the subclaims.

Accordingly, the sole according to the invention is a composite layer and consists in arrangement with each other of a rigid insole, an insert of a hard or less soft plastic, which extends in the central region of the sole, convexly curved downwards and is in direct contact with a following soft intermediate layer. The vertex of the hard mission is located approximately at the height of the rolling point of the shoe sole. The

Intermediate layer consists of a soft plastic, extending over the entire length of the sole and has in the middle region of the sole a complementary to the shape of the hard insert concave recess. The next sole layer is a lower rigid support plate, which also extends over the entire length of the sole, where finally followed by a composite down-closing outsole.

It is advantageous if the rigid insole defines on its upwardly facing side a flat surface, extends over the entire sole length and consists of hard, largely rigid material. The rigid insole in the central region of the composite Sole or be provided in the field of hard use with several juxtaposed, pointing down longitudinal ribs, preferably in the style of fish fins. As a result, the flexural rigidity of the insole in the middle region of the sole is increased accordingly. It is also advantageous if the hard insert consists of one piece or is multi-part or designed as a plastic frame, which in turn is filled with elastic balls, such as

Rubber balls or rods. In this case, the frame of the insert may have an upper flat wall and a convexly bulged lower part, wherein the lower part is centrally separated by a slot in two curly elastic arms. Due to the nature and the number of elastic balls, which are introduced in the frame, the spring action of the arms of the frame is defined.

Sehl- positive is that the soft intermediate layer has a flat top, in which a concavely curled recess for receiving the hard insert is embedded. In this case, the underside of the intermediate layer, at least in the middle region of the sole and largely also in the rear region of the sole, is likewise flat and parallel to the upper side, wherein a long tail is present in the front region of the sole. This longer tailing forms a front wedge-shaped tapering of the intermediate layer and thus of the entire composite layer of the sole, so that preferably stepped on the occurrence of the (shoe) top of the paragraph in a normal shoe at a height of about 5 cm from the ground located. Optionally, a slight rounding or tipping may be introduced at the outer end of the rear region of the sole.

Furthermore, it is of particular advantage if the lower rigid support plate for

Supporting a natural step with at least one narrow, approximately 0.5 to 2 mm wide slot-shaped transverse and a similarly sized longitudinal interruption is provided, whereby a plurality of side by side and / or one behind the other lying plate parts are formed. It owns the longitudinal interruption is an elongated S-shape that runs longitudinally along the hydrograph, continuous open at the rear and closed at the front. The two transverse breaks are respectively provided between heel or back region of the sole and arch or middle region of the sole, and between the latter and the ball or front region of the sole, whereby juxtaposed two rear plate parts, two middle plate parts and a front Plate part are formed. The interruptions of the support plate are in

Thickness direction open or at least in sections by webs or thin

Material layers in the form of film hinges elastically connected to each other. In general, the term "gait line" is understood to mean the force curve of the point of force application in the XY coordinates of a ground reaction measuring platform when it rolls on a foot. The exact possibilities and procedures for determining a hydrograph are known to the person skilled in the art and will not be explained in detail here. The transverse interruptions of the rigid support plate allow u. a., That the Abrollbzw. Bending process between bale and toe when walking and running is not affected.

The rigid support plate may also be provided with a bead-shaped longitudinal rib for supination support along the underside and near the front inside or the front plate part and have a bead-shaped longitudinal rib for pronation support along the back outside or the outside back plate part.

The rigid support plate, as well as the upper rigid insole, can be made from one

Plastic plate, a fiber composite plate with a multilayer structure or a combination thereof. The multilayer structure of the fiber composite panel can be made of glass, aramid or Carbon fibers or be made from combinations thereof. It is particularly preferred if the fiber composite board used is made of carbon fibers.

The layer-composite bottom side final outsole can, for. B. be a rubber sole, preferably of a polyamide, PU or the like with a thickness of about 2 mm. Ethyl vinyl acetate (EVA) can also be used.

It is advantageous if the ratio between the Shore hardness A of the material of the hard insert and the soft intermediate layer is about 2: 1. Preferably, the hard plastic insert has a Shore A hardness of about 45 to about 50 and / or the soft plastic intermediate layer has a Shore A hardness of about 20 to about 25. In addition, the upper has rigid

Insole has a hardness of over 80 Shore A and even more preferably over 100 Shore A and the lower rigid support plate has a hardness of at least 80 Shore A. It goes without saying that the above or below each other arranged composite parts of the sole are inseparable, z. B. by gluing, resulting in the positive

Add up the properties of the individual sole layers and produce a sole which is optimally equipped in every way in its function. The rigid insole is particularly useful in combination with soles for sandals or shoes. In particular, the rigid insole, which essentially does not deform itself, also in conjunction with the rigid subdivided support plate, ensures that the foot always remains in the same position with each step. Thus, the interaction of the soft intermediate layer, the hard insert and the rigid (preferably divided)

Support plate facilitates and the natural walking-Abrolibewegung of the foot is essentially ensured by the front curvature or tailing of the sole unit. The advantages achieved by the present invention can be summarized as follows: The interaction between upper rigid insole and lower rigid support plate leads to a particularly high stability of the entire sole. In addition, created by the

Cooperation of the two rigid plates with the intermediate soft plastic of the intermediate layer a damping and / or spring action. In the presence of the

Cross and hydro line interruption support plate, with corresponding

Support ribs and / or the front tapering slight curvature or tailing of the sole in the tip area, in addition, a beneficial orthopedic effect on the knee, hip and spine can be achieved.

The combination of soft intermediate layer, hard insert, rigid support plate and rigid insole distributes the pressure optimally to the entire foot surface. In addition, the front and back of the sole are compressed more than the central portion of the sole containing the hard insert, so that when walking or running, it rolls around the roll-off point, while providing an aesthetically pleasing shape of the sole without excessive buckling is maintained. Therefore, the foot is kinked as usual.

The sole composite according to the invention also allows, defined for each step, a

Abrolligenschaft is present, with the wedge-shaped tip when walking creates or supports a rocking effect, so that walking is facilitated.

The impact loads occurring during walking and running are not or only minimally transmitted to the knee, hip and spine. Thus, with long-term consideration or long-term wearing shoes with soles according to the invention, damage due to impact loads can be virtually ruled out. The sole is due to its particularly high stability for the Use with any shoes, including lightweight shoes and sandals.

In addition, the shoe according to the invention can be used to produce a shoe in both a stripped and a knit construction.

The invention will be explained in more detail by means of exemplary embodiments with reference to the drawing.

Fig. 1: a schematic side view of a shoe with a sole according to the invention from a composite layer (hereinafter also composite sole);

2 shows an exploded view of the composite sole of the shoe according to FIG. 1;

3 is a bottom view, according to arrow III of the support plate,

4a is a side view or a section through a hard insert in the second embodiment, Fig. 4b is a side view or a section through a hard insert in the third embodiment, and

Fig. 4c is a side view or a section through a hard insert in the fourth embodiment, In the side view of a shoe 1 shown in Fig. 1 it can be seen that this shoe 1 consists of two generally essential parts, namely one of leather, textile - or

This sole 3 is in turn (viewed from top to bottom) composed of an upper

(insole) rigid insole 1, a hard insert 6, a soft intermediate layer 7, a rigid support plate 7 and a flexible outsole 8. FIG. 2 is an exploded view of the sole 3 according to the invention and shows its layering very well. At the top is the rigid insole 4, which is a level hard one

Plastic plate that extends over the entire sole length. Here, by "rigid" to understand that the strength or rigidity is sufficient to counter pressure when walking or

To catch running. The plastic of the insole has a hardness of at least 80 Shore A and more preferably at least 100 Shore A. Preferably, the insole 4 on the underside a plurality of side by side longitudinally extending ribs 14, the shape remind of fish fins and increasing the bending stiffness of the insole 4th and thus serve the entire network. The ribs are preferably arranged in a central region 11 of the sole 3.

Underneath, ie under the ribs 14 of the insole 4, the insert 6, which is made of a relatively hard plastic, can be seen, which is likewise located substantially in the middle region 11 of the sole 3. It has a flat upper surface 22, while its convex bulging lower surface 23 from the transition rear region 10 of the sole 3 to the central region 11 of the sole 3 to a substantially transverse to the sole line 17, which in the region of the highest point of Longitudinal vault of a foot lies, extends and thus has an increasing layer thickness. From the line 17 to the transition from the central region 11 of the sole 3 to the front region 12 of the sole 3, the insert 6 has a correspondingly decreasing layer thickness. The made of harder plastic insert 6 is preferably made of EVA (ethyl vinyl acetate) and has a hardness of about 45 to about 50 Shore A.

Underneath, the intermediate layer 5 made of a soft plastic can be seen, which extends over the entire length of the sole 3 and whose upper side 21 is flat. The underside 18 of the intermediate layer 5 has a shape explained below. The intermediate layer preferably has a hardness of about 20 to about 25 Shore A. Below the range of hard insert 6 has the intermediate layer 5 a course complementary to the course of the insert 6 course, ie a concave recess 15 with a corresponding tail 16. As mentioned, the top 21 of the intermediate layer 5 with the exception of the recess 15 is flat and thus fits exactly to the corresponding planar locations on the Bottom of the insole 4, so that the flat locations on the top 21 of the intermediate layer 5 with the corresponding planar locations on the

Underside of the insole 4 are vebindbar without formation of gaps. The underside of the intermediate layer 5 is also flat and parallel to the top 21 at least in the middle region 11 of the sole 3, but also for the most part in the rear region 10 of the sole 3. In the rear region 10 of the sole, the intermediate layer 5 can form a short rear edge or tail 19 have, while it has a larger or longer tail 20 in the front portion 12 of the sole 3, which begins relatively shortly after the beginning of the front portion 12 of the sole 3, see the beginning line 33. Thus, the tip of the intermediate layer 5 and thus the entire composite sole wedge-shaped. Thereafter, the rigid support plate 7 can be seen, which also extends over the entire sole length and is made of correspondingly hard plastic, preferably of at least 80 Shore A hardness. Their particular embodiment will be explained in more detail below in connection with FIG. Finally, as the last sole layer follows the outsole 8, which also extends over the entire length of the sole 3 and thereby follows the shape of the underside of the intermediate layer 5, which covers them in a protective manner. It is preferably a rubber sole, which preferably consists of a polyamide, polyurethane (PU) or the like with a thickness of about 2 mm. Fig. 3 shows the underside of the support plate 7 of a right shoe. It is traversed by two slot-shaped transverse interruptions 24 and 25 and a longitudinal interruption 26, which serve to support a natural step. The two transverse interruptions are straight and continuous, so open on all sides and essentially mark the transitions of the central region 11 of the sole 3 to the rear portion 10 of the sole 3 and the front portion 12 of the sole 3. The longitudinal interruption 26 is behind also open, but closed in the front region 12 in approach to the front tip so that there are five sub-panels, namely two rear sub-panels 27 and 27 ', two middle sub-panels 28 and 28' and a front sub-panel 29. The longitudinal interruption 26 is formed curly in its relatively central longitudinal course and follows essentially a hydrograph 30, which is shown here in a broken line. Near the heel inside, ie on the rear inner partial plate 27, a bead-shaped rib 31 is provided, which serves the pronation support, while in the front outer side of the front plate member 29, a bead-shaped rib 32 is present, which supination support serves. It is not shown that the individual plate parts 27-29 can be in flexible connection with one another via elastic webs or film hinges.

Fig. 4a finally shows the hard insert 6 in the second embodiment. This has a plastic frame 35 with the same outer contour as the existing of a single piece of material insert 6 of the embodiment of FIGS. 1 and 2, wherein the frame is made of plastic having a hardness of over 50 Shore A. The frame 35 has a flat upper wall 36 and a convexly bulged lower part 37 which is centrally separated by a slot 38 in two arms 39 and 40. The interior of the frame 35 is filled with soft balls 36 or rods, z. B. with rubber balls. The nature and the number of balls 41 introduced into the frame make it possible to define the spring action of the arms of the frame 35. In the third embodiment of Fig. 4a, the plastic frame 35 struts 34 which are interchangeable and whose position determines a swing arm limitation of the plastic frame 35. The length of the Schwinganns is adjustable by means of the variable positioning of the braces 34 in the frame.

In the third embodiment of Fig. 4c, the plastic frame 35 has an EVA or PU core 13 which is interchangeable analogously to the inserts in the first and second embodiments.

C o m p a n c e m e n t i o n s

1st shoe

2nd shaft / upper part

3rd sole

4. rigid insole

5. soft intermediate layer

6. hard use

7. rigid support plate

8. Outsole

9. -

10. Back or heel area of the sole

11. middle area of the sole

12. front area of the sole

13. EVA or PU core of the frame

14. Longitudinal rib of the rigid insole

15. recess of the soft intermediate layer

16. Tail (radius) of the soft intermediate layer

17. Vertex / line of the hard insert or soft intermediate layer

18. Bottom of the soft intermediate layer

19. Tail (short) the soft interlayer

20. Tail (long) of the soft interlayer

21. Top of soft intermediate layer

22. upper surface of the hard insert

23. lower surface of the hard insert

24. Transverse interruption of the rigid support plate

25. Cross-interruption of the rigid support plate

26. Longitudinal interruptions of the rigid support plate

27th rear plate part of the rigid support plate

28. middle plate part of the rigid support plate

29. Front plate part of the rigid support plate

30th grade line

31. Rib / bulge, pronation

32. rib / bulge, supination

33. Beginning of front tail

34. bracing

35. Framework of hard use

36. Bullets of Hard Use

37. Lower part of the hard insert

38. Slot of hard use

39th arm of hard use

40th arm of the hard mission

41. Bullet of Hard Use

Claims

1. sole (3) for shoes or sandals consisting of a composite layer, the

arranged one below the other comprises:

a. a rigid insole (4),

b. an insert (6) made of a hard or less soft plastic which extends in a central region (11) of the sole (3) and is convexly curved downwards, wherein the convexly curved region of the insert (6) has a crown (17) has;

c. an intermediate layer (5) made of a soft plastic, wherein the insert (6) is in direct contact with the intermediate layer (5) and the vertex (17) is approximately at a level of a roll-off point of the shoe, wherein the intermediate layer (5) extends over the entire length of the sole (3) and in the central region (11) of the sole (3) has a concave shape or shape complementary to the shape or the shape of the insert (6) and wherein the intermediate layer (5) has a planar upper side (3). 21) and in the top (21) a concavely curled recess (15) for receiving the hard insert (6) is inserted;

d. a lower rigid support plate (7) extending the entire length of the sole (3), and

e. an outsole (8) located under the rigid support plate (7).

Second sole (3) according to claim 1, wherein the rigid insole (4) defines on its upwardly facing side a flat surface, extending over the entire sole length and consists of hard, largely rigid material.

3. sole (3) according to claim 1 or 2, wherein the rigid insole (4) in the central region (11) of the sole (3) or the region of the insert (6) with a plurality of juxtaposed, downwardly facing longitudinal ribs ( 14), preferably in the style of fish fins.

4. Sole (3) according to one or more of claims 1 to 3, wherein the insert (6) consists of one piece or is in several parts or as an interrupted plastic frame (35) is executed.

Sole (3) according to claim 4, wherein the frame (35) of the insert has an upper flat wall (36) and a convexly bulged lower part (37), the lower part centered through a slot (38) into two curly elastic arms (39 and 40), and wherein the frame (35) is filled with elastic balls (41) such as rubber balls or rods, or wherein the frame (35) has braces (34), or wherein the frame (35) has a core (13) made of EVA or PU.

6. sole (3) according to one or more of claims 1 to 5, wherein the intermediate layer (5) has a bottom (18), wherein the underside (18) at least in the central region (11) of the sole (3) and largely in a rear region (10) of the sole (3) is also formed flat and parallel to its flat upper side (21), wherein in a front region (12) of the sole (3) on the underside (18) of the intermediate layer (5) a long tail (20) is present, which causes a wedge-shaped taper of the intermediate layer (5) and thus of the entire layer composite, so that preferably occurs on the top of the paragraph in a normal shoe at a height of about 5 cm from Floor is set down.

7. sole (3) according to claim 6, wherein at the outer end of the rear portion (10) of the sole (3) a short rounding or tailing (19) on the underside (18) of the intermediate layer (5) is introduced.

8. sole (3) according to one or more of claims 1 to 7, wherein the lower rigid

Support plate (7) with at least one transverse (24, 25) and a longitudinal interruption (26) is provided, forming a plurality of adjacent and / or successive plate members (27, 27 ', 28, 28' and 29).

Sole (3) according to claim 8, wherein the longitudinal discontinuity (26) of the lower rigid support plate (7) has an elongated S-shape extending longitudinally along the hydrograph (30), the longitudinal interruption (26 ) in a rear area of the

Support plate (7) is open throughout and / or in a front area of the

Support plate (7) is closed, while the two transverse interruptions (24, 25) respectively between the rear region (10) of the sole (3) and middle region (11) of the sole (3) and between the latter and the front region (12) the sole (3) are provided, whereby two rear plate parts (27, 27 '), two middle plate parts (28, 28') and a front plate part (29) are formed.

10. sole (3) according to claim 8 or 9, wherein the transverse and longitudinal interruptions (24, 25, 26) of the support plate (7) in the thickness direction open or at least partially by webs or at least one thin layer of material in the form of a film hinge are elastically connected to each other.

The sole (3) according to one or more of claims 1 to 10, wherein the lower rigid support plate (7) is provided on the underside along the front outside in the direction of travel with a bead-shaped rib (32) for supination support and / or along the rear Inside in the direction of a bead-shaped rib (31) for pronation support has.

12. Sole (3) according to one or more of claims 1 to 11, wherein the ratio between the Shore hardness A of the hard plastic of the insert (6) and the soft plastic of the intermediate layer (5) is about 2: 1, and wherein Preferably, the hard plastic has a Shore A hardness of about 45 to about 50 and / or the soft plastic has a Shore A hardness of about 20 to about 25, while the upper rigid insole (4) has a hardness of about 80 Shore A. and the lower rigid support plate (7) has a hardness of over 80 Shore A.

13. Sole (3) according to one or more of claims 1 to 12, wherein the rigid insole (4) and the rigid support plate (7) consists of a plastic plate or a fiber composite plate with a multilayer structure or a combination thereof, wherein preferably the

Fiber composite carbon fiber is provided.

14. Sole according to one or more of claims 1 to 13, wherein the composite parts (4, 5, 6, 7 and 8) of the sole are inseparably connected to each other, for. B. by gluing and / or wherein the outsole (8) is a rubber sole.