Midsole having a clear free space

Abstract

A shoe sole (1) comprising a stabilizing support plate (3) and a soft-elastic midsole (2) with a forefoot area (FA), a midfoot area (MFA), and a heel area (HE) is disclosed. The stabilizing support plate is peripherally surrounded by the midsole, and the midsole (2) has a clear space (21) open to the underside (U) of the midsole (2), which is essentially completely surrounded peripherally by the midsole (2) and bounded by the stabilizing support plate (3). The clear space (21) extends from the heel area (HE) across the midfoot area (MFA) into the forefoot area (FA) of the midsole (2).

Description

Technical field

[0001] The present invention relates to the field of shoe technology, in particular shoes for everyday use, such as sneakers, and relates to a sole for such a shoe. State of the art

[0002] A wide variety of everyday shoes with different cushioning systems are known in the current state of the art. Everyday shoes, such as sneakers, differ significantly from sports shoes, especially running shoes, in the requirements placed on the sole with regard to cushioning properties. Firstly, the stress on the foot in everyday life is typically much lower than during running. Secondly, the shoe remains in contact with the ground for longer periods when standing than a typical running shoe, which means that the stability requirements for the sole of such a shoe differ from those of a running shoe.

[0003] In the prior art, for example, insoles with a gel core as a cushioning system are known. Everyday shoes with insoles that have a gel core in the heel area to provide vertical cushioning upon impact are widespread. Further improvements in vertical cushioning properties have been achieved by placing individual spring elements in the heel area between the outsole and the insole. Other known cushioning solutions involve gases encapsulated within the insole and / or sealed air chambers. Insoles known in the prior art are disclosed, for example, in US 2019 150 563 A1, US 8 356 425 B2, and US 2008 005 929 A1. Description of the invention

[0004] A problem with common everyday shoes is their environmentally damaging production, due to the relatively high proportion of polymer material from fossil sources required for the midsole. This typically high polymer content in the sole results in a heavy weight, reducing comfort and causing the wearer to tire more quickly. Furthermore, improved cushioning is often achieved through the use of additional polymer materials, which is problematic from an ecological perspective.

[0005] Furthermore, established cushioning systems have the disadvantage that energy is necessarily lost during the cushioning process, increasing the effort required from the wearer and thus leading to faster fatigue. Since cushioning systems typically increase the weight of the shoe, this fatigue is further exacerbated. On the other hand, while many established cushioning systems offer satisfactory damping of the vertical forces acting upon heel strike, they do not provide sufficient absorption of horizontal forces, which is particularly problematic for people with knee and / or hip pain.

[0006] Another disadvantage of existing cushioning systems is that they can cause instabilities, which occur, among other things, when standing. While this is less significant for sports shoes, especially running shoes, due to the short ground contact time, this effect represents a significant loss of comfort for everyday and leisure shoes. A common problem in this regard is the "swimming effect" caused by the cushioning system or the sole construction.

[0007] The general object of the invention is therefore to further develop the state of the art in the field of shoe soles and preferably to overcome the disadvantages of the state of the art wholly or partially.

[0008] In advantageous embodiments, a shoe sole is provided that exhibits a satisfactory cushioning effect and simultaneously reduces energy loss during push-off due to the cushioning. In further advantageous embodiments, a sole is provided that is lightweight and can be manufactured in a more environmentally friendly and cost-effective manner. In further advantageous embodiments, a shoe sole is provided that can satisfactorily cushion both vertically and horizontally acting forces occurring during walking. In further advantageous embodiments, a shoe sole is provided that enables a stable stance and preferably prevents or reduces the floating effect.

[0009] The invention is described in the attached set of claims.

[0010] In a first aspect of the invention, the general problem is solved by a shoe sole comprising a stabilizing support plate and a midsole with a forefoot area, a midfoot area, and a heel area. The midsole has a clear opening open towards the underside of the midsole, which is essentially completely surrounded by the midsole and bounded by the stabilizing support plate. Thus, the midsole itself has a continuous central opening, which is closed by the stabilizing support plate. "Open towards the underside" means that the clear opening is designed as a recess open when viewed from the ground when the shoe is worn. The stabilizing support plate typically limits the clear opening in the vertical direction. The clear opening extends from the heel area, across the midfoot area, into the forefoot area of ​​the midsole.The length (clear width in the longitudinal direction) of the clear space in the longitudinal direction is at least 70% of the length of the midsole in the longitudinal direction. In such a sole, the stabilizing support plate is designed to absorb the wearer's weight, and the surrounding midsole is designed to act as a support structure and cushioning system. Unlike conventional soles, the stabilizing support plate, not the midsole, acts as the primary load-bearing element. The stabilizing support plate thus allows the midsole to be reduced to the peripheral area of ​​the shoe sole. Since the stabilizing support plate is significantly lighter than midsoles made of common polymer materials, the weight of the shoe sole is considerably reduced. Typically, the stabilizing support plate can be flexible and incompressible.The stabilizing support plate is preferably at least partially exposed to the environment on the underside of the shoe sole and therefore at least partially visible from the outside, or partially uncovered by the midsole, preferably in the area of ​​the clear space.

[0011] Preferably, the midsole is designed such that the stabilizing support plate does not come into contact with the ground during walking. For example, the midsole can form a ridge that circumferentially, preferably completely, around the clear space. This ridge can have a width of 1 to 4 cm, preferably 2 to 4 cm. During walking, the ridge can come into contact with the ground either directly or via an outsole applied to the ridge.

[0012] The open space is located in the center of the midsole. Because this open space is completely surrounded by the midsole, it does not extend to the outer edge. This open space allows for significant weight savings and facilitates the flexion of the stabilizing plate. As a result, a more rigid plate can be used than in a sole without this open space, while still allowing for comfortable flexion during walking and thus providing high energy return. This reduces fatigue and provides a more comfortable walking experience. Furthermore, the increased flexibility of the sole further enhances comfort.

[0013] Directional terms as used in the present disclosure are to be understood as follows: The longitudinal direction L of the sole is described by an axis from the heel area to the forefoot area and thus extends along the longitudinal axis of the sole. The transverse direction Q of the sole runs transversely to the longitudinal axis and substantially parallel to the underside of the sole, or substantially parallel to the ground. Thus, the transverse direction runs along a transverse axis of the sole. The vertical direction V, in the context of the present invention, denotes a direction from the underside of the sole towards the insole, or, in the operational state, towards the foot of the wearer, and thus runs along a vertical axis of the sole. The outer side of the midsole refers to the peripherally circumferential outer region of the midsole.The medial area of ​​the midsole is the part of a shoe that, when worn, faces the other shoe. Conversely, the lateral area of ​​the midsole refers to the outer part of the midsole, which, when worn, faces away from the other shoe and is therefore opposite the medial area.

[0014] Soft-elastic materials for soles are well known to those skilled in the art. For example, materials with a Young's modulus of approximately 0.0001 to 0.2 GPa, particularly 0.001 to 0.1 GPa, can be used. Typically, such materials can include polymer foams. Soft-elastic materials that can be used include rubber, ethylene-vinyl acetate copolymer (EVA), polyurethane, in particular thermoplastic polyurethane (TPU) or expanded thermoplastic polyurethane (eTPU), polyamides, e.g., PA-11, PA-12, nylon, polyethylene terephthalate (PET) or polybutylene terephthalate (TBT), or mixtures thereof.

[0015] The stabilizing support plate can be made of a hard polymer, e.g., LDPE, HDPE, polypropylene, etc., or of carbon fibers or mixtures thereof. Furthermore, the stabilizing support plate can additionally or alternatively comprise or consist of a hardened textile material. Preferably, the stabilizing support plate is made of a different material than the midsole. The stabilizing support plate is flexed by the support during the impact and rolling motion of the foot. Due to the plate's typically flexible properties, the push-off process is supported by the plate returning to its original, nearly flat shape. This effect is further enhanced by the open space. The larger the open space, or the greater the width in the transverse direction of the open space, the more efficient the energy transfer during the push-off.Furthermore, a significantly stiffer plate can be used, as the increased clearance facilitates bending of the support plate. Preferably, the support plate has a Shore durometer of 60 to 70 Shore D, more preferably 62 to 68 Shore D. The support plate can generally have a thickness, i.e., a vertical dimension, of up to 5 mm, particularly 1 to 5 mm, preferably 1.5 to 4 mm.

[0016] Typically, the stabilizing support plate is designed so that the patient's foot is positioned essentially entirely over the stabilizing support plate during the surgical procedure. Thus, the patient's foot is preferably not positioned directly over the midsole.

[0017] In some embodiments, the clear space in the transverse direction of the midsole has a width (transverse width) of at least 25% of the total transverse width of the midsole. For example, the width (transverse width) can be at least 1 cm, preferably at least 1.5 cm, and in particular between 1 cm and 5 cm, preferably between 1.5 cm and 5 cm. Due to the stabilizing support plate, the clear space can be designed to be relatively wide without instability. The length (longitudinal width) of the clear space in the longitudinal direction can be 70% to 95%, preferably 70% to 85%, of the longitudinal length of the midsole. The length (longitudinal width) depends on the respective shoe size, but in some exemplary embodiments can be at least 20 cm, and in particular between 20 and 30 cm.

[0018] In certain embodiments, the clear space in the transverse direction of the midsole has a width (clear width in the transverse direction) of at least 1.5 cm, preferably at least 2 cm, at least at one point.

[0019] In some embodiments, the clear space can have a variable width (clear width in the transverse direction) along its longitudinal length of the midsole. For example, the midsole surrounding the clear space can be curved at the periphery of the clear space, i.e., not straight. Preferably, the clear space is completely surrounded by the midsole.

[0020] Preferably, the width (clear width in the transverse direction) of the clear space in the transverse direction is greater in the forefoot area than in the heel area and / or in the midfoot area, since in the forefoot area in the area of ​​the toe joints of the wearer the sole is bent when walking and therefore increased flexibility in this area is advantageous for wearing comfort and energy transfer during push-off.

[0021] In some embodiments, the midsole has a circumferential step for improved attachment of the stabilizing support plate. The stabilizing support plate is arranged on and / or attached to this step. Preferably, the stabilizing support plate is flush with the midsole surrounding it, so that the transition area between the stabilizing support plate and the midsole is seamless in the vertical direction. The step can preferably be formed in the direction of the clear space or substantially completely surround it peripherally.

[0022] In further embodiments, the upper surface of the stabilizing support plate, i.e., the surface of the stabilizing support plate which, when worn, faces the wearer's foot or the insole, is not covered by the midsole. The midsole thus only surrounds the stabilizing support plate peripherally, saving material and environmentally harmful polymer material without reducing wearing comfort or cushioning.

[0023] In some embodiments, the longitudinal length of the stabilizing support plate is at least 80%, preferably 80% to 95%, of the length of the midsole, and / or the transverse width (Q) of the stabilizing support plate is at least 50%, preferably 50% to 90%, of the transverse width (Q) of the midsole. In such embodiments, it is ensured that the stabilizing support plate supports the weight of the wearer and distributes it efficiently over the entire shoe sole, particularly onto the peripherally circumferential midsole, which is arranged vertically below the stabilizing support plate.

[0024] In some embodiments, the midsole in the heel area features a cavity bounded by the midsole and the stabilizing support plate. This cavity is provided in addition to the channels and is typically designed to offer additional cushioning upon initial contact of the shoe with the ground. The cavity may also be designed to compress elastically under the forces generated during walking. Generally, the cavity can be formed or bounded entirely or at least partially by the soft, elastic midsole.

[0025] Preferably, the cavity is completely enclosed. Thus, in such embodiments, the cavity is a completely enclosed hollow space that is elastically compressible. For example, in such embodiments, the cavity can be completely bounded and enclosed by the soft elastic midsole, or completely bounded and enclosed by the soft elastic midsole and the stabilizing support plate. Complete closure of the cavity prevents stones or pieces of wood from becoming trapped within it.

[0026] In further embodiments, the cavity is arranged between the heel edge, i.e., the rearmost part of the midsole when viewed longitudinally, and the open space. In such embodiments, the cavity optimally complements the channels for cushioning, since the heel area, which first comes into contact with the ground, exhibits a significantly improved cushioning effect.

[0027] In some embodiments, the midsole is at least partially provided with an outsole on its underside. Preferably, the lateral area of ​​the midsole is completely covered with the outsole. The outsole can have anti-slip properties. It has been shown that slipping during impact and push-off can be effectively prevented if an anti-slip outsole is only arranged in the lateral area. At least in part of the medial area, such an outsole can be omitted due to the natural movement of the foot while walking, without the shoe slipping relative to the ground. This saves both material and weight.

[0028] The outsole cannot be an integral part of the midsole. For example, the outsole can be made of a different material than the midsole, which might be more abrasion-resistant than the material of the soft, elastic midsole.

[0029] The outsole can also be textured, which improves its slip resistance. The texture can, for example, consist of regularly and irregularly arranged grooves or channels.

[0030] In some embodiments, the midsole has several channels designed as blind holes, which are open towards the clear space and extend towards the outside of the midsole.

[0031] The channels, designed as blind holes, are not continuous. Therefore, the outer surface of the midsole is preferably made entirely of a single material and has no lateral openings. Typically, the channels are designed and dimensioned to provide cushioning, causing the channels to narrow or at least partially close during walking. Preferably, the channels are at least partially defined or formed by the soft, elastic midsole. The stabilizing support plate also prevents the deformation of the channels from being transmitted to the wearer's foot.

[0032] For the purposes of the present invention, a channel is understood to be a recess, which is typically tubular in shape. Generally, a channel is wholly or partially bounded by channel walls. Typically, the channels are empty. The channels are at least partially collapsible. Since the channels are designed as blind holes, they are open only on one side. In preferred embodiments, the channels of the midsole can run substantially parallel to one another. In some embodiments, the height of the individual channels, i.e., their vertical extent, can be between 1 mm and 1 cm, and / or the length of the channel, i.e., their longitudinal extent along the sole, can be between 1 and 2.5 cm.

[0033] In some embodiments, the wall thickness between one end of the channel and the outer surface of the midsole can be at least 3 mm, in particular 3 to 15 mm, preferably between 5 and 15 mm. Such a wall thickness effectively prevents the occurrence of a floating effect and increases the stability of the sole.

[0034] In some embodiments, the channels are arranged in the heel and midfoot areas; in particular, the channels can be arranged only in the heel and midfoot areas, leaving the forefoot area free of channels. Since the foot's initial contact normally occurs in the heel area, good cushioning is especially important in this area. By omitting channels in the forefoot area, the push-off is supported and improved, as cushioning channels in the forefoot area lead to energy loss during the push-off process.

[0035] In further embodiments, the channels are designed to deform in the vertical and / or horizontal direction under the forces occurring during running, such that the openings of the channels close by at least 1 / 3, preferably at least 2 / 3. Preferably, the channels cannot be completely closed by the forces occurring during running. It has been shown that everyday and leisure shoes, unlike sports shoes, require less cushioning. Since the channels preferably do not close completely, better stability is achieved and the "floating" effect is avoided or at least reduced.

[0036] The forces occurring during running are typically due to the weight force resulting from the weight of the carrier, which can be between 40 and 120 kg, for example, and especially between 50 and 100 kg.

[0037] In some embodiments, the channels, preferably all channels of the midsole, are bounded by the stabilizing support plate and the flexible midsole. In some embodiments, the channels are completely bounded by the stabilizing support plate and the flexible midsole. Typically, the stabilizing support plate bounds the channels in the vertical direction.

[0038] Preferably, the channels, and in particular all channels, can have a U-shaped cross-section in the longitudinal direction. In embodiments where the channels are bounded by the soft, elastic midsole and the stabilizing support plate, the soft, elastic midsole, for example, forms the U-shape of the channels, and the stabilizing support plate limits the U-shape in the vertical direction. A U-shaped cross-section is particularly advantageous because it allows not only vertically acting forces but also, optimally, horizontally acting forces, such as those that occur when running on uneven terrain, to be efficiently dampened.

[0039] In further embodiments, the midsole has one or more transverse grooves arranged longitudinally in front of and / or behind a channel and open towards the underside of the midsole. Such grooves facilitate the closure of the channel in the horizontal direction, i.e., along the length of the midsole. The channel can be sheared more easily due to these grooves, which increases the cushioning effect against horizontally acting forces. In an everyday or leisure shoe, one, two, or three such grooves per side, i.e., on the lateral and medial sides, may be sufficient to achieve adequate cushioning. Furthermore, a groove depth of 0.1 to 0.5 cm, preferably 0.1 to 0.3 cm, is sufficient to achieve this effect.

[0040] Another aspect of the invention relates to a shoe comprising a shoe sole according to the embodiments described herein.

[0041] In some embodiments, the shoe has an outer upper and an inner textile upper. These need not be integrally formed. In particular, the outer upper can be made of a different material, such as leather or synthetic leather, than the inner upper. The inner upper can typically be designed as a sock. In particular, the inner upper can be elastic. An elastic inner upper can, for example, be designed so that, when unworn, it has a space with a smaller volume than the volume of the wearer's foot and is stretched when worn. This ensures that the wearer's foot is snug, which greatly increases wearing comfort. For this purpose, the inner upper is designed to be at least partially free to move relative to the outer upper. Those skilled in the art understand that the inner upper can be connected to the outer upper at some points.For example, the inner upper can be sewn or glued to the outer upper in the heel area. Preferably, however, the inner upper is designed to be movable relative to the outer upper, at least in the midfoot and / or forefoot area.

[0042] In some embodiments, the inner upper defines an interior space which is completely separated from the outer upper, so that the foot of the wearer does not come into contact with the outer upper.

[0043] Another aspect of the invention relates to the use of a shoe sole according to the embodiments described herein in the manufacture of a shoe. In particular, the manufacture may include attaching an upper to such a shoe sole. Brief explanation of the characters

[0044] Aspects of the invention are explained in more detail with reference to the exemplary embodiments shown in the following figures and the accompanying description. Figure 1 shows a view from below of the underside of a sole according to the invention for a running shoe according to one embodiment of the invention; Figure 2 shows a schematic longitudinal section along BB according to Fig. 1 the inventive sole according to the in Figure 1 embodiment shown; Figure 3 shows a schematic section in the transverse direction along AA according to Fig. 1 Figure 4 shows a top view of the upper surface of a sole according to the invention for a running shoe; Figure 5 shows a schematic longitudinal section in the lateral area in the longitudinal direction of a sole according to the invention according to a further embodiment of the invention; Figure 6 shows a schematic side view of the sole according to the invention as described in Figure 4. Figure 1 embodiment of the invention shown; Figure 7 shows a schematic cross-section in the forefoot area of ​​a shoe according to the invention. Ways to implement the invention

[0045] In Figure 1 Figure 1 shows a view of the underside of a sole 1 according to an embodiment of the invention. The sole 1 has a midsole 2 which includes a clear space 21. The clear space 21 is as shown in the Figure 1The midsole 2 is clearly visible and completely surrounded peripherally. The stabilizing support plate 3 is also shown, which limits the clear space 21 in the vertical direction V, so that the stabilizing support plate is exposed to the surrounding area within the clear space and uncovered by the midsole in this area. The clear space 21 has a variable width along its length in the longitudinal direction L. The width, i.e., the direct extent of the clear space 21 in the transverse direction Q, is greater in the forefoot area than in the midfoot or heel area. This promotes energy transfer during push-off in the forefoot area. Furthermore, the narrower width in the heel and midfoot areas leads to increased stability during impact, as a floating effect is avoided. The narrower width also means that the medial (MB) and lateral (LB) areas are less able to move away from each other.The midsole is designed such that the clear space 21 has a curved periphery. Channels 23a, 23b, and 23c are open towards the clear space 21. The midsole 2 shown is fully covered with the structured outsole 4 in the lateral area LB and partially covered in the medial area MB. The medial area of ​​channels 23a, 23b, and 23c is not covered with an outsole.

[0046] The Figure 2 shows a longitudinal section along BB in the longitudinal direction L of the Figure 1The sole 1 shown. The midsole 2 has the clear space 21 with clear width I in the longitudinal direction L, which is open towards the underside of the midsole 2 and thus towards the ground when worn, and extends from the heel area FB via the midfoot area MFB to the forefoot area VFB. The clear space 21 is peripherally surrounded by the midsole 2 and bounded vertically V by the stabilizing support plate 3. Figure 2The figure clearly shows that the stabilizing support plate 3 is peripherally surrounded by the midsole 2. This means that a large portion of the wearer's weight is initially transferred to the stabilizing support plate and then distributed from there to the midsole surrounding it. This allows for significant savings in polymer material for the midsole, reducing both manufacturing costs and environmental impact. The midsole 2 has a circumferential step 25 on which the stabilizing support plate 3 is positioned. Longitudinally, between the clear space 21 and the heel edge 22, the midsole 2 has a cavity 24, which is completely enclosed and formed and bounded by the midsole 2 and the stabilizing support plate 3.

[0047] The Figure 3 shows a cross-section of the in Figure 1 embodiment shown along AA (see below). Figure 1The cross-section runs through channel 23c. It is evident that channel 23c is designed as a blind hole. The wall thickness W between the end of the channel and the outer surface of the midsole can be at least 3 mm. Channel 23c opens towards the clear space 21 and is bounded vertically V by the stabilizing support plate 3. The clear space 21 is also bounded vertically V by the stabilizing support plate 3. The clear space 21 has a clear height x in the vertical direction V. Furthermore, the space generally has a maximum clear width z in the transverse direction Q in the area of ​​channel 23c and a smaller clear width y in the transverse direction Q on the underside of the insole.

[0048] The Figure 4Figure 1 shows a view of the upper side, i.e., the insole and the foot of the wearer of a shoe with sole 1 of a sole 1 according to the invention. It is evident that the stabilizing support plate 3 is completely surrounded peripherally by the midsole 2 and the upper side of the stabilizing support plate is uncovered by the midsole 2.

[0049] Figure 5 shows a sole 1 according to the invention in longitudinal section through the channels 23a, 23b, 23c and 23d along CC according to Figure 1Sole 1 comprises a midsole 2, which has a heel area FB, a midfoot area FB, and a forefoot area VFB. The midsole 2 has channels 23a, 23b, 23c, and 23d extending in the transverse direction Q in the heel area FB and the midfoot area MFB. These channels are designed as blind holes and are arranged essentially parallel to each other. The forefoot area is free of channels. The channels 23a, 23b, 23c, and 23d have a U-shaped cross-section in the longitudinal direction and are bounded vertically V by the stabilizing support plate 3. Thus, the channels 23a, 23b, 23c, and 23d are completely and exclusively bounded by the soft elastic midsole 2 and the stabilizing support plate 3, regardless of the shape of the channels.The midsole 2 has a groove 26 in the longitudinal direction L in front of channel 23c and behind channel 23b, which is arranged longitudinally between the channels and facilitates their horizontal shearing in the longitudinal direction L. The underside U of the midsole 2, i.e., the side facing the ground when worn, is provided with a structured outsole 4.

[0050] In the Figure 6 Figure 1 shows a schematic side view of sole 1. It is evident that the in Figure 1 The channels 23a, 23b, 23c and 23d shown are blind holes, i.e. they extend towards the outside of the midsole 2, but are not continuous, so that the outside of the midsole 2 is as shown in the Figure 5 shown, generally has no channels or side openings.

[0051] In the Figure 7 is a cross-section in the transverse direction Q along DD according to Figure 1The forefoot area of ​​a shoe 100 according to the invention, with a sole according to the invention, is shown. The sole comprises a midsole 2 which includes a clear space 21. The clear space 21 is completely surrounded peripherally by the midsole 2. The stabilizing support plate 3, which limits the clear space 21 in the vertical direction V, is also shown. The shoe 100 also has an outer upper 52 and an inner upper 51. The inner upper 51 is designed such that an interior space 53 is defined, which is substantially completely separated from the outer upper 52, so that the foot of the wearer, which is positioned in the interior space 53, does not come into contact with the outer upper. In the illustrated embodiment, the inner upper 51 is substantially movable relative to the outer upper 52 in the forefoot area and can be displaced against it to a certain degree.

Claims

1. A shoe sole (1) comprising a stability support plate (3) and a soft-elastic midsole (2) having a forefoot area (VFB), a midfoot area (MFB) and a heel area (FB), wherein the stability support plate is peripherally surrounded by the midsole and the midsole (2) has a clear free space (21) that is open towards the bottom side (U) of the midsole (2), which is peripherally essentially completely surrounded by the midsole (2) and which is limited by the stability support plate (3), and wherein the clear free space (21) extends from the heel area (FB) via the midfoot area (MFB) into the forefoot area (VFB) of the midsole (2), characterised in that the length of the clear free space (21) in a longitudinal direction (L) is at least 70 % of the length of the midsole (2).

2. The shoe sole (1) according to claim 1, wherein the soft-elastic midsole (2) has a circumferential step (25), wherein the stability support plate (3) is arranged at the step (25) and / or attached thereto.

3. The shoe sole (1) according to claim 1 or 2, wherein the topside of the stability support plate (3) is not covered by the midsole (2).

4. The shoe sole according to claim 3, wherein the stability support plate (3) aligns with the midsole (2) that surrounds the stability support plate peripherally.

5. The shoe sole (1) according to any one of the preceding claims, wherein the length of the stability support plate (3) in the longitudinal direction is at least 80 %, preferably 80 % to 95 % of the length of the midsole (2) and / or the width of the stability support plate (3) in a transverse direction (Q) is at least 50 %, preferably 50 to 90 %, of the width of the midsole (2) in the transverse direction (Q).

6. The shoe sole (1) according to any one of the preceding claims, wherein the midsole (2) has, in the heel area (FB), a cavity (24) limited by the midsole (2) and the stability support plate (3), preferably wherein wherein the cavity (24) is completely enclosed by the stability support plate (3) and the soft-elastic midsole (2).

7. The shoe sole (1) according to any one of the preceding claims, wherein the midsole (2) is at least in part provided with an outer sole (4) at the bottom side (U) and wherein the lateral area (LB) of the midsole (2) is completely provided with the outer sole (4) and, optionally, only a part of the medial area (MB) of the midsole (2) is provided with the outer sole (4), preferably wherein the outer sole (4) is structured.

8. The shoe sole (1) according to any one of the preceding claims, wherein the clear free space (21) has a width of at least 25 % of the total width of the midsole (2) in the transverse direction (Q) of the midsole (2).

9. The shoe sole (1) according to any one of the preceding claims, wherein the length of the clear free space (21) in the longitudinal direction (L) is 70 % to 95 % of the length of the midsole (2).

10. The shoe sole (1) according to any one of the preceding claims, wherein the width of the clear free space (21) in the transverse direction (Q) in the forefoot area (VFB) is larger than in the heel area (FB) and / or in the midfoot area (MFB).

11. The shoe sole (1) according to any one of the preceding claims, wherein the clear free space (21) along its length in the longitudinal direction of the midsole (2) has a variable width in the transverse direction (Q), preferably wherein the midsole (2) surrounding the clear free space (21) is formed in a curved manner at the periphery of the clear free space (21).

12. The shoe sole (1) according to any one of the preceding claims, wherein the midsole (2) has several channels (23a, 23b, 23c, 23d) formed as blind holes that are open towards the clear free space (21) and extend in the direction of the outside of the midsole (2), preferably wherein the channels (23a, 23b, 23c, 23d) are arranged in the heel area (FB) and in the midfoot area (MFB) and the forefoot area (VFB) is preferably free from channels.

13. The shoe sole (1) according to claim 12, wherein the channels (23a, 23b, 23c, 23d) are limited by the stability support plate (3) and the soft-elastic midsole (2).

14. The shoe sole (1) according to claim 12 or 13, wherein the midsole (2) has one or more grooves (26) running in the transversal direction (Q), which are, in the longitudinal direction (L), arranged in front of and / or behind a channel (23b, 23c) and are open towards the bottom side (U) of the midsole (2).

15. A shoe (100), comprising a shoe sole (1) according to any one of the preceding claims, preferably wherein the shoe has an outer upper (52) and an inner textile upper (51), optionally wherein the inner upper (52) defines an interior space (53) that is completely delimited from the outer upper by the inner upper (51).

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