Abstract
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) is disclosed. The stability support plate is peripherally surrounded by the midsole and the midsole (2) has a clear space (21) open to the bottom side (U) of the midsole (2), which is peripherally surrounded substantially completely by the midsole (2) and is delimited by the stability support plate (3). The clear space (21) extends from the heel area (FB) over the midfoot area (MFB) into the forefoot area (VFB) of the midsole (2).
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 wherein the midsole (2) comprises a clear space (21) being open towards a bottom side (U) of the midsole (2), which is peripherally surrounded substantially completely by the midsole (2) and which is delimited by the stability support plate (3), and wherein the clear space (21) extends from the heel area (FB) via the midfoot area (MFB) into the forefoot area (VFB) of the midsole (2).
2. The shoe sole (1) according to claim 1, wherein the soft elastic midsole (2) comprises a circumferential step (25), wherein the stability support plate (3) is arranged on and/or attached to the step (25).
3. The shoe sole (1) according to claim 1, wherein the top side of the stability support plate (3) is uncovered by the midsole (2).
4. The shoe sole (1) according to claim 3, wherein the stability support plate (3) is aligned with the midsole (2) peripherally surrounding the stability support plate.
5. The shoe sole (1) according to claim 1, wherein a length of the stability support plate (3) in a longitudinal direction is at least 80%, preferably 80% to 95%, of a length of the midsole (2) and/or wherein a width of the stability support plate (3) in a transverse direction (Q) is at least 50%, preferably 50 to 90%, of a width of the midsole (2) in the transverse direction (Q).
6. The shoe sole (1) according to claim 1, wherein the midsole (2) comprises in the heel area (FB) a cavity (24) delimited by the midsole (2) and the stability support plate (3).
7. The shoe sole (1) according to claim 6, wherein the cavity (24) is completely closed by the stability support plate (3) and the soft elastic midsole (2).
8. The shoe sole (1) according to claim 6, wherein the cavity (24) is arranged between the heel edge (22) of the midsole (2) and the clear space (21).
9. The shoe sole (1) according to claim 1, wherein the midsole (2) is at least partially provided with an outsole (4) on the bottom side (U) and wherein a lateral area (LB) of the midsole (2) is completely provided with the outsole (4) and optionally only a part of a medial area (MB) of the midsole (2) is provided with the outsole (4).
10. The shoe sole (1) according to claim 9, wherein the outsole (4) is structured.
11. The shoe sole (1) according to claim 1, wherein the midsole (2) has a plurality of channels (23a, 23b, 23c, 23d) being configured as blind holes which are open towards the clear space (21) and extend towards an outer side of the midsole (2).
12. The shoe sole (1) according to claim 11, wherein the channels (23a, 23b, 23c, 23d) are arranged in the heel area (FB) and in the midfoot area (MFB), and wherein preferably the forefoot area (VFB) is free of channels.
13. The shoe sole (1) according to claim 11, wherein the channels (23a, 23b, 23c, 23d) are configured to deform in vertical (V) and/or horizontal direction (L) by forces occurring during walking in such a way that the openings of the channels (23a, 23b, 23c, 23d) close at least up to ⅓, preferably at least up to ⅔.
14. The shoe sole (1) according to claim 11, wherein the channels (23a, 23b, 23c, 23d) are delimited by the stability support plate (3) and the soft elastic midsole (2).
15. The shoe sole (1) according to claim 11, wherein the midsole (2) comprises one or more grooves (26) extending in the transverse 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).
16. The shoe sole (1) according to claim 11, wherein a wall thickness (W) between an end of the channel (23a, 23b, 23c, 23d) and the outer side of the midsole (2) is at least 3 mm.
17. A shoe (100) comprising a shoe sole (1) according to claim 1.
18. The shoe (100) according to claim 17, wherein the shoe comprises an outer upper (52) and an inner textile upper (51).
19. The shoe according to claim 18 wherein the inner upper (52) defines an interior space (53) completely segregated from said outer upper by said inner upper (51).
20. A use of a shoe sole according to claim 1 in the manufacture of a shoe.
Description
BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS
[0043] Aspects of the invention are explained in more detail with reference to the embodiments shown in the following figures and the accompanying description,
[0044] FIG. 1 shows a view from below on the bottom side of a sole according to the invention for a running shoe according to an embodiment of the invention;
[0045] FIG. 2 shows a schematic longitudinal section along B-B according to FIG. 1 of the soleplate according to the embodiment shown in FIG. 1;
[0046] FIG. 3 shows a schematic section in the transverse direction along A-A according to FIG. 1 of a sole according to one embodiment of the invention;
[0047] FIG. 4 shows a top view on the top side of a sole for a running shoe according to the invention;
[0048] FIG. 5 shows a schematic longitudinal section in the lateral area in the longitudinal direction of a sole according to another embodiment of the invention;
[0049] FIG. 6 shows a schematic side view of the sole according to the embodiment of the invention shown in FIG. 1; and
[0050] FIG. 7 shows a schematic cross-section in the forefoot area of a shoe according to the invention.
DETAILED DESCRIPTION OF THE INVENTION
[0051] FIG. 1 shows a view of the bottom side of a sole 1 according to an embodiment of the invention. The sole 1 comprises a midsole 2, which comprises a clear space 21. As can be seen in FIG. 1, the clear space 21 is peripherally completely surrounded by the midsole 2. In addition, the stability support plate 3 is shown, which delimits the clear space 21 in the vertical direction V, so that the stability support plate is exposed to the environment in the region of the clear space and is uncovered by the midsole in this area. The clear space 21 has a variable width along its length in longitudinal direction L. The width, i.e., the direct extension of the clear space 21 in the transverse direction Q, is greater in the forefoot area than in the midfoot area or in the heel area. This favors the energy transfer in the forefoot area during the push-off. In addition, the smaller width in the heel area and midfoot area leads to increased stability upon tread, as a floating effect is avoided. The reduced width effects that the medial (MB) and lateral (LB) areas are less able to move away from each other. The medial sole is formed such that the clear space 21 has a curved periphery. The channels 23a, 23b and 23c are open towards the clear space 21. The shown midsole 2 is provided with the structured outsole 4 in the complete lateral area LB and partially in the medial area MB. In the region of the channels 23a, 23b and 23c, the medial area is not provided with an outsole.
[0052] FIG. 2 shows a longitudinal section along B-B in the longitudinal direction L of the sole 1 shown in FIG. 1. The midsole 2 has the clear space 21 with clear width 1 in the longitudinal direction L, which is open towards the bottom side of the midsole 2 and thus towards the ground in the worn state and extends from the heel area FB via the midfoot area MFB into the forefoot area VFB. The clear space 21 is peripherally surrounded by the midsole 2 and delimited in the vertical direction V by the stability support plate 3. FIG. 2 clearly shows that the stability support plate 3 is peripherally surrounded by the midsole 2. As a result, a large part of the weight of the wearer first acts on the stability support plate and is distributed from there to the midsole peripherally surrounding it. Significant amounts of polymer material for the midsole can thus be saved, which reduces both manufacturing costs and environmental impact. The midsole 2 has a circumferential step 25 at which, respectively on which, the stability support plate 3 is arranged. In the longitudinal direction between the clear space 21 and the heel edge 22, the midsole 2 has a cavity 24 which is completely closed and is formed and delimited by the midsole 2 and the stability support plate 3.
[0053] FIG. 3 shows a cross-section of the embodiment shown in FIG. 1 along A-A (cf. FIG. 1). The cross-section runs through the channel 23c. It can be seen that the channel 23c is formed as a blind hole. The wall thickness W between the end of the channel and the outer side of the midsole can be at least 3 mm. The channel 23c is open towards the clear space 21 and is delimited in the vertical direction V by the stability support plate 3. The clear space 21 is also delimited in the vertical direction V by the stability support plate 3. The clear space 21 has the clear height x in the vertical direction V. In addition, the clear space generally has a maximum clear width z in the transverse direction Q in the region of the channel 23c and a smaller clear width y in the transverse direction Q on the bottom side of the sole.
[0054] FIG. 4 shows a view of the top side, i.e., that of the insole and the foot of the wearer of a shoe with sole 1 of a sole 1 according to the invention. It can be seen that the stability support plate 3 is completely surrounded peripherally by the midsole 2 and the top side of the stability support plate is uncovered by the midsole 2.
[0055] FIG. 5 shows a sole 1 according to the invention in longitudinal section through the channels 23a, 23b, 23c and 23d along C-C according to FIG. 1. Sole 1 comprises a midsole 2, which comprises a heel area FB, a midfoot area MFB and a forefoot area VFB. In the heel area FB and in the midfoot area MFB, the midsole 2 comprises channels 23a, 23b, 23c and 23d extending in the transverse direction Q, which are each formed as blind holes and are arranged essentially parallel to one another. The forefoot region is free of channels. The channels 23a, 23b, 23c and 23d are U-shaped in cross-section in the longitudinal direction and are delimited in the vertical direction V by the stability support plate 3. Thus, the channels 23a, 23b, 23c and 23d are completely and exclusively delimited by the soft elastic midsole 2 and the stability support plate 3, regardless of the shape of the channels. The midsole 2 comprises in the longitudinal direction L in front of the channel 23c and behind the channel 23b a groove 26, which is arranged between the channels in the longitudinal direction and facilitates their horizontal shearing in the longitudinal direction L. The bottom side U of the midsole 2, i.e., the side facing the ground in the worn state, is provided with a structured outsole 4.
[0056] FIG. 6 shows a schematic side view of the sole 1. It can be seen that the channels 23a, 23b, 23c and 23d, shown in FIG. 1, are blind holes, i.e., they extend towards the outer side of the midsole 2 but are not through-going, so that the outer side of the midsole 2, as shown in FIG. 5, generally has no channels or lateral openings.
[0057] FIG. 7 shows a cross-section in the transverse direction Q along D-D according to FIG. 1 through the forefoot area of a shoe 100 according to the invention with a sole according to the invention. The sole comprises midsole 2 which comprises a clear space 21. The clear space 21 is peripherally completely surrounded by the midsole 2. In addition, the stability support plate 3 is shown, which delimits the clear space 21 in the vertical direction V. The shoe 100 also has an outer upper 52 and an inner upper 51. The inner upper 51 is formed such that an inner space 53 is defined, which is substantially completely segregated from the outer upper 52, so that the foot of the wearer, which is arranged in the inner space 53, does not come into contact with the outer upper. In the embodiment shown, the inner upper 51 in the forefoot area is substantially movable relative to the outer upper 52 and can be displaced against the latter to a certain extent.
