INSOLE OR INNER SOLE WITH PRESSURE VENTILATION

Abstract

Insole or inner sole which is intended for an item of footwear and is designed in the form of a pressure-ventilation sole (40a-e) such that a flexurally elastic pressure-exerting plate (10, 20, 30) rests on a lower sole, said pressure-exerting plate being displaceable by the user's body weight, when the user is moving, into transverse profiling in the interspace between the pressure-exerting plate (10, 20, 30), which is in the vicinity of the sole of the foot, and the lower sole and displacing the contained air volume in the manner of ventilation, wherein the lower sole of the pressure-ventilation sole (40a-e) is configured in the form of a corrugated structured sole (1) from a spring steel or a comparable plastic material, the transverse profiling thereof being designed in the form of a corrugated profile and being stable, and resistant to deformation, in relation to a compressive force acting vertically on the structured sole (1), and that the pressure-exerting plate (10, 20, 30), which is in the vicinity of the sole of the foot, can be displaced into the dimensionally stable corrugation valleys (12) of the structured sole (1) in the manner of a pumping and/or compression plate.

Claims

1. Insole or inner sole which is intended for an item of footwear and is designed in the form of a pressure-ventilation sole (40a-e) such that a flexurally elastic pressure-exerting plate (10, 20, 30) rests on a lower sole, said pressure-exerting plate being displaceable by the user's body weight, when the user is moving, into transverse profiling in the interspace between the pressure-exerting plate (10, 20, 30), which is in the vicinity of the sole of the foot, and the lower sole and displacing the contained air volume in the manner of ventilation, characterized in that the lower sole of the pressure-ventilation sole (40a-e) is configured in the form of a corrugated structured sole (1) from a spring steel or a comparable plastic material, the transverse profiling thereof being designed in the form of a corrugated profile and being stable, and resistant to deformation, in relation to a compressive force acting vertically on the structured sole (1), and that the pressure-exerting plate (10, 20, 30), which is in the vicinity of the sole of the foot, can be displaced into the dimensionally stable corrugation valleys (12) of the structured sole (1) in the manner of a pumping and/or compression plate.

2. Insole or inner sole according to claim 1, characterized in that the respective corrugation valley (12) of the structured sole (1) forms a gutter-shaped pressure ventilated compression space (17) with the pressure-exerting plate (10, 20, 30) covering the corrugation valley (12), wherein an air or moisture circulation is provided in the longitudinal extension of said pressure ventilated compression space.

3. Insole or inner sole according to claim 2, characterized in that the gutter-shaped compression space (17) is open on one side to the end side.

4. Insole or inner sole according to claim 2 or 3, characterized in that the gutter-shaped compression space (17) can be ventilated and vented by means of perforations (9) in the structured sole (1).

5. Insole or inner sole according to claim 2 or 4, characterized in that the gutter-shaped compression space (17) can be ventilated and vented by means of holes (16) in the pressure-exerting plate (10, 20, 30).

6. Insole or inner sole according to claim 1 or 5, characterized in that the pressure-exerting plate (10) consists of a flat flexurally elastic plate which is suitable to deform itself flexibly into the corrugation valleys (12) of the structured sole (1).

7. Insole or inner sole according any of claims 1 to 6, characterized in that the pressure-exerting plate (20) consists of a flexurally elastic plate having a corrugation structure, and that the corrugation structure (33) of the pressure-exerting plate (30) is complementary or partly complementary to the corrugation structure (33) of the structured sole (1).

8. Insole or inner sole according to claim 7, characterized in that the corrugation valleys (32) of the corrugation structure (33) of the pressure-exerting plate (30) rests on the corrugation crests (11) of the structured sole (1), and that the corrugation crests (31) of the pressure-exerting plate (30) are opposite the corrugation valleys (12) of the structured sole (1) and form the gutter-shaped, pressure-ventilated compression space (17).

9. Insole or inner sole according to claim 7 or 8, characterized in that the corrugation crests (31) of the pressure-exerting plate (30) are suitable to form themselves flexibly into the corrugation valleys (12) of the structured sole (1).

10. Insole or inner sole according to claim 1 or 9, characterized in that an elastomeric coating (34) is arranged directed to the sole of the foot of the user on the top of the pressure-exerting plate (10, 20, 30), said coating being preferably formed from a memory-effect forming plastic material.

11. Insole or inner sole according to one of claims 1 to 10, characterized in that the pressure-exerting plate (10, 20, 30) has approximately the same area of the underlying structured sole (1).

12. Insole or inner sole according to any of claims 1 to 11, characterized in that the pressure-ventilation sole (40,40a, 40b) consisting of structured sole (1) and pressure-exerting plate (10, 20, 30) is designed as a half sole or as a full sole.

13. Insole or inner sole according to any of claims 1 to 12, characterized in that the pressure-ventilation sole (40, 40a, 40b) can be ventilated and vented via the upper material (22) and/or the sole of an item of footwear (27).

14. Insole or inner sole according to claim 13, characterized in that a semipermeable membrane (37) is arranged in the area of the ventilation and venting openings.

15. Insole or inner sole according to any of claims 1 to 14, characterized in that the structured sole (1) allows a rolling movement in the longitudinal direction of the structured sole, but a deflection in a vertical direction for this purpose is prevented by the fact that it has a cross-stability and a longitudinal stability by means of the oblique arrangement of the corrugations (2) of the cross-profiling relative to the longitudinal axis.

16. Insole or inner sole according to claim 15, characterized in that the individual corrugations (2) of the cross-profiling extend at least in the forefoot area at an angle between 70 and 85 degrees, preferably 77 degrees, to the longitudinal center line.

17. Insole or inner sole according to one of claims 1 to 16, characterized in that at least the structured sole (1) is connected on the edge side of an elastomeric edge frame (44).

18. Insole or inner sole according to claim 17, characterized in that the edge frame (44) in connection with the pressure-exerting plate (20, 20) resting thereon forms a ventilation duct structure (46), which is connected in an air-tight manner with the ventilation ducts (21) of the pressure-ventilation sole (40, 40a-40e).

Description

[0104] Here, the drawings and their description reveal other features and advantages of the invention that are substantial to the invention, in which:

[0105] FIG. 1 shows a top view on an embodiment of a structured sole with a pressure-exerting plate covering the structured sole (indicated)

[0106] FIG. 2 shows a partial cross-section of the arrangement according to FIG. 1 in the direction of line II-II in the unloaded condition of the pressure-exerting plate

[0107] FIG. 3 shows the same representation according to FIG. 2 with loaded pressure-exerting plate

[0108] FIG. 4 shows an embodiment modified relative to FIG. 3, in which the pressure-exerting plate consists of an elastomeric deformable plate

[0109] FIG. 5 shows a cross-section according to the line V-V in FIG. 1

[0110] FIG. 6 shows a schematic representation of the plate-shaped pressure-exerting plate on the structured sole under the effect of a rib structure of FIG. 7

[0111] FIG. 7 shows a modified exemplary embodiment compared to FIG. 2 with a pressure-exerting plate having a corrugated structure

[0112] FIG. 8 shows a modified embodiment compared to FIG. 7, in which a multi-layer pressure-exerting plate is shown

[0113] FIG. 9 shows a modified version compared to FIGS. 7 and 8, in which the air-bearing compression spaces are filled with a suitable air-bearing material.

[0114] FIG. 10 shows a modified version from the above versions, which shows that the corrugation profile of the pressure-exerting plate may differ from the corrugation profile of the structured sole.

[0115] FIG. 11 shows a cross-section of an embodiment of a pressure-exerting plate with flat webs

[0116] FIG. 12 shows a cross-section of a connection between the pressure-exerting plate and the structured sole having a pressure-exerting plate with arch webs in a second embodiment

[0117] FIG. 13 shows a view of the pressure-ventilation sole from above with representation of the pressure-exerting plate which is in the vicinity of the sole

[0118] FIG. 14 shows a view of the pressure-ventilation sole from below

[0119] FIG. 15 shows an enlarged side view of the heel area of the pressure-ventilation sole in the direction of the XV arrow in FIG. 14

[0120] FIG. 16 shows an enlarged side view of the forefoot area of the pressure-ventilation sole in the direction of the arrow XVI in FIG. 14

[0121] FIG. 17 shows a side view of the pressure-ventilation sole

[0122] FIG. 17A shows a schematized partial cross-section through a pressure-ventilation sole

[0123] FIG. 18 shows a sub-view of the pressure-ventilation sole with a border frame represented in dashed lines.

[0124] FIG. 1 shows a structured sole 1 consisting of a spring material, which has been described in detail in the above-mentioned documents.

[0125] Reference is made to the relevant documents with regard to the function and structure of such a structured sole 1. The structured sole 1 allows a rolling movement in the longitudinal direction of the structured sole, but a deflection in a vertical direction for this purpose is prevented by the fact that it has a cross-stability and a longitudinal stability by means of the oblique arrangement of the corrugations 2 of the cross-profiling relative to the longitudinal axis.

[0126] This is achieved by the fact that the individual corrugations 2 of the cross-profiling extend at least in the forefoot area at an angle between 70 and 85 degrees, preferably 77 degrees, to the longitudinal center line.

[0127] Thus, the corrugations do not deform in the walking movement in the sense of compression, as it was recognized in the prior art as disadvantageous in several respects: they are instead stable.

[0128] As a result, the structured sole 1 consists of a spring steel or a comparable plastic material and has an angle to the rib-shaped cross-profiling running at an angle relative to the longitudinal center line 5, said cross-profiling being formed as a corrugation profile and consisting of a number of consecutive corrugations 7, 8 of which each corrugation consists of a corrugation crest 11 and a subsequent corrugation valley 12.

[0129] There are also holes 9 in the area of cross-profiling.

[0130] The cross-profiling in the heel area 3 has a different angle than comparatively the cross-profiling in the forefoot area 4.

[0131] The reference numeral 6 is also used to indicate the COP line, which results from the use of the structured sole 1 with the user's weight on the structured sole 1 and during the walking process.

[0132] According to the invention, the structured sole 1 is now covered by a plate-shaped, flexurally elastic pressure-exerting plate 10, whose outer outline is slightly larger than that of the structured sole.

[0133] According to the invention, since it is provided that the pressure-exerting plate 10 covers the corrugation crests from above (see FIG. 2) in an air-locking manner and as effectively as possible, it can be seen from the comparison between FIG. 1 and FIG. 2 that during the walking process the pressure-exerting plate 10 is now displaced due to its support on the stable corrugation crests 11 of the structured sole 1 in the area of the corrugation valleys 12 into the respective corrugation valley 12, as this is shown with the bending line 15 in FIG. 2.

[0134] The previously flat and continuous bending line 15 of the unformed pressure-exerting plate 10 passes during the walking process into the deformed bend line 15 and thus a compression effect occurs in the area of the corrugation valleys 12, such that this area is called compression space 17, in which in the longitudinal direction an air flow and a moisture transport takes place in the arrow direction 13.

[0135] This means that the air and moisture transport in the longitudinal direction of the compression space 17 is carried out, namely in the area of the corrugation valleys 12 of the structured sole 1, such that this air flow and moisture transport at the end faces of the gutter-shaped corrugation valleys 12 reaches outwards and is directed in the direction of arrow 14 through the lateral outlines of the pressure-exerting plate 10 upwards into the interior of an item of footwear.

[0136] It may also be provided that the pressure-exerting plate 10 has a variety of holes 16. such that the air flow that is generated in the gutter-shaped compression space 17, additionally flows upwards in the direction of the arrow 19 through the pressure-exerting plate 10 into the interior of an item of footwear and thus hits directly on the foot underside of the user.

[0137] Thus. the pressure-exerting plate 10 deforms approximately in a corrugated manner in the form of the pressure-exerting plate 10 into the corrugation structure of the structured sole 1.

[0138] But because the corrugation crests 11 form a counter bearing for the pressure-exerting plate 10 and on the other hand the corrugation valleys 12 are supported on the underside by means of a footwear-side counter plate 18, it results in the described compression effect and compression space 17.

[0139] This is shown in FIG. 3. It can be seen that a strong volume reduction takes place in the compression space 17 due to the fact that the pressure-exerting plate 10 is deformed in its position 10 into the corrugation valleys 12 of the structured sole 1. The gutter-shaped corrugation valleys of the structured sole can therefore also be called ventilation ducts 21, through which the air stream flows out in the vicinity of the face end from the ventilation ducts 21 in the direction of arrow 13 and also in the direction of arrow 19 through the pressure-exerting plate 10.

[0140] It may be provided that the support points (connection points 29) with which the plate-shaped pressure-exerting plate 10 rests on the corrugation valleys 12 of the structured sole 1, are additionally secured against longitudinal and/or transverse displacement. Here, a bonding can take place or the pressure-exerting plate may be held on the corrugation structure of the structured sole by mechanical fasteners such as rivets, screws, spot welding, mechanical locking agents, mechanical suspension connections or the like.

[0141] FIG. 4 shows that instead of a plate-shaped flexurally elastic pressure-exerting plate 10, a pressure-exerting plate consisting of a soft elastic material 20 can be used, which preferably consists of an elastomeric material, such as PU foam, natural or synthetic rubber, a PDMA plastic or a closed-cell foamed plastic.

[0142] In such a pressure-exerting plate consisting of an elastomeric material 20, 20, it is only required that the material deforms back to its original plate-shaped state under pressure load (see FIG. 4), so that such a pressure-exerting plate is also made of a soft-elastic material which preferably consists of a closed-cell or open-cell PU foam or another suitable plastic material.

[0143] Otherwise, the same description applies to the same parts of FIG. 4 as was given on the basis of FIGS. 1 to 3.

[0144] FIG. 5 shows a cross-section through the structured sole with an applied pressure-exerting plate 10, 20, 30, wherein it becomes clear from the cross-section of FIG. 5 that the entire arrangement can now be called pressure-ventilation sole 40, because the structured sole 1 with the applied pressure-exerting plate 10, 20, 30 results in a group that is referred to in the following as pressure-ventilation sole 40. The pressure-ventilation sole can therefore be used as an insole or as a solidly integrated inner sole in a footwear structure.

[0145] From the sectional view from FIG. 5, it is clear that such a pressure-ventilation sole (consisting of the structured sole 1 and one of the embodiments of a pressure-exerting plate 10, 20, 30) now forms a unit, so that this unit can be inserted either as an insole on an existing inner sole in an item of footwear structure of a footwear or the entire unit of the pressure-ventilation sole 40 can also be directly integrated into an item of footwear structure as an inner sole.

[0146] As an example, in FIG. 5 the installation is shown as an insole, wherein it is recognizable that starting from a lower, bottom-side sole 27 an upper lasting allowance 25 is formed, which is formed sideways at a distance plate 26 arranged above the sole 27.

[0147] The upper material 22 of an item of footwear structure is held in this lasting allowance 25. The connection between the upper material 22 and the lasting allowance 25 can be done by a Strobel construction or by gluing.

[0148] In the structure shown according to FIG. 5, it can be seen that the inner sole 24 is formed directly by the structured sole 1 and from the cross-section (not to scale) it is further recognizable that a corrugation valley 12 of the structured sole 1 was cut through, thereby resulting in a corrugation crest in the longitudinal direction of the cross-profiling. In this interspace, the respective gutter-shaped compression space 10 is formed, through which an air transport in the arrow directions 13 and 16 takes place.

[0149] FIG. 5 therefore describes both the use of the pressure-ventilation sole 40 as insole 23, but also as inner sole 24, which is directly integrated into the footwear structure of an item of footwear. It can be any known footwear type, e.g. for work footwear, casual footwear, sneakers, sandals, moccasins, women's pumps and the like.

[0150] Likewise, the ventilation paths of the forced ventilation are shown, and it is recognizable in one embodiment that one part of the air stream flows at the inside of the upper material 22 into the interior of an item of footwear, while another part of the air stream flows through the holes 16 in the pressure-exerting plate 10, 20, 30 upwards into the interior of an item of footwear against the sole of the foot of the user.

[0151] FIG. 5 shows further ventilation options for the interior of an item of footwear, which can be used in a unique setting or in combination with the aforementioned embodiments of ventilation for all types of insole and/or inner sole.

[0152] Thus, the arrow in the direction of arrow 39 also shows the possibility that the forced air flow generated by the pressure-ventilation sole 40, 40A, 40B can also flow out sideways in the upper material by assigned recesses 22. It is preferred if, in the area of these recesses, a semipermeable membrane 27 is arranged, which allows air exchange to the outside, but prevents the penetration of moisture inwards.

[0153] Furthermore, as a further ventilation and venting option, it is indicated that starting from the pressure-ventilation sole 40, 40A, 40 B, which is used as an insole or as an inner sole, direct ventilation and venting can also be carried out through an item of footwear sole 27 of an item of footwear.

[0154] Again, in the range of recesses 38 in the vicinity of the sole, a semipermeable membrane 37 may be arranged to allow a forced air passage through the recesses 38 vicinity of the sole, without moisture being able to penetrate through the recesses 38 inwards into an item of footwear.

[0155] FIG. 6 shows schematized the function of a pressure-exerting plate, whereby only a plate-shaped pressure-exerting plate 10, 20 is shown for simplification. The same principle also applies to a corrugation structure with pressure-exerting plate 30, which will still be described on the basis of FIG. 7.

[0156] From FIG. 6, it is recognizable that by the user's body weight, which is exerted in the direction of arrow 28 from the foot sole to the top of the pressure-exerting plate 10, 20, 30, now a deformation force is applied on the pressure-exerting plate 10, 20, 30 perpendicular or approximately perpendicular to its plane, which thus deforms itself into the corrugation valleys 12 of the structured sole 1 due to the relatively not formable structure of the underlying structured sole 1 and therefore provides a forced ventilation in the direction of the arrow 13 of the compression space formed thereby in the compression space 17 formed in the corrugation valley 12.

[0157] To increase the ventilation effect and to increase the volume of the compression space 17, it is provided in a further development of the invention that according to FIG. 7 the pressure-exerting plate 30 can also have a corrugation structure 33, which is complementary to the corrugation structure 11, 12 of the structured sole 1 and is shifted in the longitudinal direction by a vibration (phase) relative to the corrugation structure of the structured sole.

[0158] This means that each corrugation crest 31 of the corrugated pressure-exerting plate 30 is opposite a corrugation valley 12 of the underlying structured sole 1 and that, analogously, each corrugation valley 32 of the corrugated pressure-exerting plate 30 rests in a sealing manner on a corrugation crest 11 of the underlying structured sole 1.

[0159] Thus, the displacement volume in the compression space 17 is doubled compared to a purely plate-shaped pressure-exerting plate 10, 20, wherein the bending line 15 indicates the deformation of the corrugated pressure-exerting plate 30.

[0160] The bending elasticity of the corrugated pressure-exerting plate 30 should be chosen in such a way that a deformation of the corrugation structure 33 is possible, while such deformation of a corrugation structure 11, 12 at the underlying structured sole 1 is not necessary.

[0161] FIG. 7 shows in another exemplary embodiment that also the corrugation structure 33 of the pressure-exerting plate 30 can still carry an additional elastomeric coating 34, which is preferably made of a soft elastic, foam-like material.

[0162] This results in a flat surface at the top of the pressure-exerting plate 30 and results in a pleasant rolling feeling for the foot of a user.

[0163] In another embodiment it may be provided that the elastomeric coating 34 is significantly higher formed, i.e. that the corrugation crests 31 of the corrugated pressure-exerting plate 30 are still covered by the elastomeric coating 34 with a sufficient degree of coverage.

[0164] The material of the pressure-exerting plate 30 can preferably consist of a deformable plastic material, such as a 2 to 4 mm thick plastic plate, into which the corrugation structure is imprinted or otherwise molded.

[0165] In all embodiments described, there is the advantage that forced or pressure ventilation in the interior of an item of footwear is caused solely by a weight shift of the user's foot sole and it is a closed system which does not rely on the external supply of air by a semipermeable membrane.

[0166] In this known embodiment, it has shown that when using a semipermeable membrane there are sealing problems with regard to water penetration.

[0167] Such problems do not have the presented pressure ventilation, because it is a self-contained pressure ventilation system arranged in an item of footwear interior, which is not dependent on the supply of air from the outside via a semipermeable membrane.

[0168] There may also be a suction effect, in such a way that at a pressure load of the respective upper pressure-exerting plate 10, 20, 30, air from the interior of an item of footwear is sucked through the pressure-exerting plate into the corrugation valleys of the structured sole and, in the event of a different weight shift or walking movement, the suction from the interior is now displaced at its end face from the compression chamber to the inside of the upper material of an item of footwear.

[0169] Therefore, not only an air and moisture transport takes place vertically to the user's longitudinal axis, but also an air and moisture transport takes place in the plane of the structured sole and is deflected upwards at the inside of the upper material of an item of footwear.

[0170] FIG. 8 shows a pressure-exerting plate 30 consisting of 2 layers, the upper position 30a of which facing the sole of the foot of the user is designed in a soft manner, while the lower layer 30b, which lies directly on the corrugation structure of the structured sole 1, is formed in a harder manner. It is therefore a multilayer layer structure 41.

[0171] FIG. 9 shows as a new exemplary embodiment that the air-deflecting compression chambers 17 and the thus formed ventilation ducts 21 can be filled in a room-filling manner with an open-pored, air-deflecting and compressible filling material 42. It can be an open-celled foam or plastic foam impregnated with activated carbon or other deodorizing and/or antibacterial substances or a similar honeycomb structure.

[0172] FIG. 10 shows that it is not necessary to achieve the object of the invention that each corrugation of the structured sole 1 also corresponds to a corrugation of the pressure-exerting plate 30, 30a, 30b, 30c. Thus it may be provided in this exemplary embodiment that the pressure-exerting plate 30c has corrugation valleys, which at least partially engage in the corrugation valleys of the structured sole 1 in a form-fitting manner and thus secure the corrugated pressure-exerting plate 30c on the corrugation structure to avoid displacement of the structured sole 1 in the longitudinal direction. This allows the formation of compression spaces 17, 17 with different volume. In another exemplary embodiment, the compression chamber 17 can also be completely omitted, because, for example, every second or third corrugation structure of the pressure-exerting plate 30c adapts to and fills out the corrugation structure of the structured sole 1 completely and in a form-fitting manner.

[0173] In the exemplary embodiment according to FIGS. 11 and 12, different formations of the pressure-exerting plate 30 are shown, however, these embodiments are also applicable on the embodiments shown in the previous drawings of the pressure-exerting plate 30a, 30b, 30c.

[0174] In order to achieve an improved connection between the pressure-exerting plate 30 and the underlying corrugation structure of the structured sole 1, it is provided in the exemplary embodiment according to FIG. 11 that the corrugation valleys of the pressure-exerting plate 30 are formed as flat webs 43a. This results in an improved adaptation of the corrugation structure of the pressure-exerting plate 30 to the corrugation structure of the structured sole 1.

[0175] In the exemplary embodiment according to FIG. 12, it is shown that the flat webs 43a can also be formed as arch webs 43b to achieve an even more improved adjustment of the pressure-exerting plate 30 in the area of the corrugation crests of the structured sole 1.

[0176] As indicated in the general description, the connection between the structured sole 1 and the pressure-exerting plate 10, 10, 30 above it can take place by means of different types of connection, wherein welding or adhesive joints and other fabric compounds were mentioned, as well as mechanical connections. Also any combination between mechanical connections and the above-mentioned weld or adhesive connections is possible.

[0177] FIG. 13 shows the top view on a pressure-ventilation sole 40, 40a-e with a view of the pressure-exerting plate 30d facing the sole of the foot in the design as insole. Under a textile fabric 48, the corrugation structure 33 of the pressure-exerting plate is easily recognizable and the foot sole rolling on the corrugation structure 33 transfers the pressure load to the corrugation structure 33 of the pressure-exerting plate 30d, which is thereby displaced into the stable corrugation structure 11, 12 of the structured sole 1. The corrugation structure 33 of the pressure-exerting plate 30d arranged in the heel area 3 is in this exemplary embodiment hermetically closed from the side and forms an air-filled compression space, which acts as an air cushion when walking.

[0178] FIG. 14 shows the 180-degree top view on the pressure-ventilation sole 40, 40a-e with a pressure-exerting plate with an elastomeric pressure body 53, which consists of a foamed, soft elastic plastic body.

[0179] The corrugation structure of the structured sole 1 continues on the edge side into the 30d pressure-exerting plate, which protrudes in a surrounding manner over the structured sole 1. Thus, it is ensured that the air streams flowing between the corrugation structure 11, 12 of the structured sole 1 and the complementary corrugation structure 33 of the pressure-exerting plate 30d in the direction of arrow 13 are located sideways from the ventilation ducts 21. A part of the air streams escapes through the holes 9 of the structured sole 1. Another part of the air streams can escape from the sole of the foot through perforations in the pressure-exerting plate 30d. It is shown that the ventilation structures extend only to part of the forefoot and to the heel area. The invention is not restricted thereto. As shown in FIG. 1, the ventilation structures can extend completely over the entire surface and meet in the connection area 58.

[0180] This applies to all exemplary embodiments, in particular also to FIG. 13, where only a part of the top of the pressure-ventilation sole is represented with the ventilation structure.

[0181] FIG. 15 shows the heel area 3 of the pressure-ventilation sole 30d, where it is recognizable that the elastomeric pressure body, which is part of the pressure-exerting plate 30d, is formed thickened in the heel area.

[0182] FIG. 16 shows the forefoot area 49, 50 of the pressure-ventilation sole 30d with the upward pointing structured sole 1, which in case of use is at the bottom of an item of footwear and is either part of an insole or part of the inner sole of an item of footwear.

[0183] In of this perspective representation, the lateral openings of the ventilation ducts 21 are shown. The corrugation structure 31, 32 of the pressure-exerting plate 30d is complementary to the corrugation structure 11, 12 of the structured sole 1. The embodiment according to FIGS. 13 to 18 corresponds to the exemplary embodiments according to FIGS. 3 to 10.

[0184] The ventilation ducts 21 formed by the complementary corrugation structures of the structured sole and pressure-exerting plate 30, 30a-d have a particularly large volume and cause an effective ventilation effect. In addition, the user has the feeling of running on air.

[0185] In the side view of FIG. 17, the same parts are marked with the same reference numerals. The corrugation structure of the structured sole 1 is arranged only in the forefoot area and in the heel area. The corrugation structure 33 of the pressure-exerting plate 30d is provided only in the forefoot area. The pressure-exerting plate 30d is structured in three layers and consists of the plate-shaped pressure-exerting plate 20, which forms the corrugation structure 33 complementary to the structured sole 1 in the forefoot area. The pressure-exerting plate is connected to the soft-elastic pressure body 53, which is thickened in the heel area and carries a textile fabric 48 as the top cover.

[0186] FIG. 17A shows schematized a partial cross-section through a pressure-ventilation sole, with the representation of the basic principle of the invention. The pressure-ventilation sole according to all described designs thus forms an air bed with pumping effect such that the human sole of the foot can roll on it.

[0187] Even if the air-conducting tube ducts (=compression ducts) are filled with an elastic, open or closed-pored material in a preferred exemplary embodiment, the cross-section of the respective tube duct should consist of at least 40% of its cross-section of air.

[0188] In the previous exemplary embodiments, it was assumed that the structured sole has the previously described corrugations 2 at the sole side (bottom). In order to allow better processing of such a structured sole 40a, b, c, d, e as insole or as inner sole in a footwear, it is provided in an advantageous further design that the corrugations arranged at the bottom of the structured sole 1 are filled with a filling material 57 in order to achieve a smooth, sole-side adhesive surface 56.

[0189] Such a filling material is also referred to in the technical language as outpouring mass and can consist, for example, of a pourable wax or an elastic plastic, e.g. a polyurethane foam.

[0190] This makes it easy to insert the pressure-ventilation sole onto an insole present in the vicinity of the footwear into an item of footwear. When used as a sole chassis for installation as an inner sole, the widened edge frame is attached to an item of footwear shaft (see the following FIG. 18) and the now smooth underside of the pressure-ventilation sole forms the opposite surface for the outsole of an item of footwear to be attached there, which can be glued, welded, injected or sewn there.

[0191] FIG. 18 shows such a modified example of an execution of a pressure-ventilation sole 40, for which all explanations of the above examples apply. A particularly good mechanical processing of the pressure-ventilation sole results when a flexurally elastic edge frame 44 is formed at the bottom of the corrugated structured sole 1. However, all other features of the pressure-ventilation sole remain the same.

[0192] With the dashed lines 54, 55 in FIG. 18, such a flexurally elastic edge frame 44 is indicated. In practice, the edge frame is considered to be thin plastic plate or film glued or injected at the bottom of the structured sole 1.

[0193] The edge frame 44 has preferably the same corrugation form as the structured sole 1 and continues the corrugation form of the structured sole 1 sideways to the outside. Thus, the compressible ventilation duct structure 46 formed from the edge frame 44 and the pressure-exerting plate 20, 20 formed on it continues into the ventilation structure of the pressure-ventilation sole 40, 40a-40e.

[0194] The same image also applies to the formation as an inner sole. For the simpler description, the following description describes the use as an inner sole. In order to simplify the integration of the structured sole 1 with the mount of an item of footwear shaft by means of a Stroble construction or by a lasting allowance, it is provided that the structured sole 1 is connected to the plastic-made, elastomeric edge frame 44 from the edge sidepreferably circumferentially. The tools necessary for the lasting allowance can then act upon the edge frame 44 and do not have to act directly upon the hard structured sole 1.

[0195] In order to achieve an improvement of the air outflow at the inside of an item of footwear, it may be provided that the mouths of the ventilation ducts 21 in the edge frame 44 are formed as arc-shaped cut-outs 47. This embodiment can be used for all exemplary embodiments of FIGS. 1 to 18.

[0196] For all exemplary embodiments of FIGS. 1 to 18, the corrugated structures of the structured sole and thus also the associated ventilation structures can be used either over the entire surface area of the pressure-ventilation sole 40 or even only over a smaller part of the surface. FIG. 1 shows only a part of the structures used that do not extend over the entire surface.

[0197] In this drawing, however, it is schematically shown that the drawn structures can extend to the connection area 58 between the forefoot area and the heel area, so that the structures arranged at different angles to each other of the front foot and heel area meet in the connection area 58.

REFERENCE NUMERALS

[0198] 1 Structured sole [0199] 2 Corrugations [0200] 3 Heel area [0201] 4 Forefoot area [0202] 5 Longitudinal center line [0203] 6 COP line (barefoot) [0204] 7 Corrugation (at 3) [0205] 8 Corrugation (at 4) [0206] 9 Holes [0207] 10 Pressure-exerting plate 10 [0208] 11 Corrugation crest [0209] 12 Corrugation valley [0210] 13 Arrow direction [0211] 14 Arrow direction [0212] 15 Bending line (of 10) [0213] 15 Bending line [0214] 16 Hole (in 10) [0215] 17 Compression space, [0216] 18 Counter plate [0217] 19 Arrow direction [0218] 20 Pressure plate 20 [0219] 21 Ventilation duct [0220] 22 Upper material [0221] 23 Insole [0222] 24 Inner sole [0223] 25 Lasting allowance [0224] 26 Spacer plate [0225] 27 Sole [0226] 28 Arrow direction (pressure force) [0227] 29 Connection point [0228] 30 Pressure plate [0229] 31 Corrugation crest (of 30) 30a, 30b, 30c [0230] 32 Corrugation valley (of 30) [0231] 33 Corrugation structure (of 30) [0232] 34 Elastomeric coating [0233] 35 Contact surface [0234] 36 Arrow direction [0235] 37 Semipermeable membrane [0236] 38 Recess [0237] 39 Arrow direction [0238] 40a, b, c, d Pressure ventilation sole [0239] 41 Layer structure [0240] 42 Filler material [0241] 43 Web [0242] 43a Flat web [0243] 43b Arch webs [0244] 44 Edge frame [0245] 45 Coverage area [0246] 46 Ventilation duct structure (of 44) [0247] 47 Arc-shaped cutout (optional) [0248] 48 Textile fabric [0249] 49 Area of the toes [0250] 50 Area of the ball of the foot [0251] 51 Area of the midfoot [0252] 52 Heel area [0253] 53 Elastomeric pressure body (30d) [0254] 54 Inner delimitation [0255] 55 Outer delimitation [0256] 56 Adhesive surface [0257] 57 Filling material [0258] 58 Connection area