EP3318147B1 - Shoe with a sole construction and an air pump apparatus for blowing air into the inside of a shoe - Google Patents
Shoe with a sole construction and an air pump apparatus for blowing air into the inside of a shoe Download PDFInfo
- Publication number
- EP3318147B1 EP3318147B1 EP16197329.2A EP16197329A EP3318147B1 EP 3318147 B1 EP3318147 B1 EP 3318147B1 EP 16197329 A EP16197329 A EP 16197329A EP 3318147 B1 EP3318147 B1 EP 3318147B1
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- EP
- European Patent Office
- Prior art keywords
- cavity
- shoe
- layer
- shoe according
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007664 blowing Methods 0.000 title claims description 5
- 238000010276 construction Methods 0.000 title description 24
- 239000000463 material Substances 0.000 claims description 78
- 229920003023 plastic Polymers 0.000 claims description 25
- 239000004033 plastic Substances 0.000 claims description 25
- 238000005086 pumping Methods 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 4
- 239000003190 viscoelastic substance Substances 0.000 claims description 3
- 239000005871 repellent Substances 0.000 claims 2
- 229920005983 Infinergy® Polymers 0.000 description 4
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 239000007779 soft material Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 208000002352 blister Diseases 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- BFMKFCLXZSUVPI-UHFFFAOYSA-N ethyl but-3-enoate Chemical compound CCOC(=O)CC=C BFMKFCLXZSUVPI-UHFFFAOYSA-N 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/06—Footwear with health or hygienic arrangements ventilated
- A43B7/08—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures
- A43B7/081—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures the air being forced from outside
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B1/00—Footwear characterised by the material
- A43B1/0018—Footwear characterised by the material made at least partially of flexible, bellow-like shaped material
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/12—Soles with several layers of different materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/181—Resiliency achieved by the structure of the sole
- A43B13/186—Differential cushioning region, e.g. cushioning located under the ball of the foot
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
- A43B13/188—Differential cushioning regions
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
- A43B13/203—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with a pump or valve
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
- A43B13/206—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with tubes or pipes or tubular shaped cushioning members
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/06—Footwear with health or hygienic arrangements ventilated
- A43B7/08—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures
- A43B7/084—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures characterised by the location of the holes
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/06—Footwear with health or hygienic arrangements ventilated
- A43B7/08—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures
- A43B7/084—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures characterised by the location of the holes
- A43B7/085—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures characterised by the location of the holes in the upper
Definitions
- the invention relates to a shoe with a sole construction, the top of which faces a shoe interior, and with an air pumping device for blowing air into the shoe interior, the air pumping device having a bellows formed in a cavity in a heel region of the sole construction, an intake passage connected to the bellows Transporting air from a suction port into the bellows and having an air supply means connected to the bellows for conveying air from the bellows into the shoe interior of the shoe.
- Such a shoe is for example from the publications EP 2 218 348 A1 and WO 2012/126489 A1
- the sole construction in the heel region may have a multi-layer construction, wherein an intermediate layer containing the cavity is made of a material (for example, soft polyurethane foam) which is to be more elastic or more compressible than the material of the outsole.
- the outsole should for example consist of abrasion-resistant rubber.
- the air pumping device is adapted, in response to a walking movement of a user, to alternately suck in air via the air intake passage from the outside of the shoe upon unloading (lifting the shoe from the ground) and air via channels under load (when occurring and loaded by the weight of the user) to blow in the shoe interior.
- a first valve is arranged, which is designed such that it only allows air to pass in the direction from outside the sole construction into the air pumping device.
- a second valve is arranged, which is designed such that it allows air only in the direction of the air pumping device to the channels.
- the pumping effect can be further supported by the outsole on the outer tread in the region of the air pumping device has a raised portion which is pressed under load by the foot of the user in the direction of the upper sole part.
- the midsole between a hard outsole and another sole, wherein the midsole should be made of a material that is more compressible (elastic / soft) than that of the outsole and as that of the other sole.
- the shoe according to the invention has a sole construction with its upper side facing a shoe interior and an air pumping device for blowing air into the shoe interior.
- the air pumping device has a bellows formed in a cavity in a heel portion of the sole structure, an intake passage connected to the bellows for conveying air from a suction port into the bellows, and an air supply device connected to the bellows for passing air from the bellows into the shoe interior.
- the intake duct and / or the air supply means may in some embodiments comprise a plurality of parallel-acting ducts (eg tubes, hoses).
- the intake passage and the air supply means may include a common duct portion that opens into the cavity.
- the intake duct and the air supply means comprise valves which provide the desired direction of air transport.
- a “bellows” should be understood to mean functionally a device which encloses an air volume on all sides (with the exception of the openings to the intake duct and the air supply device) and which expels air through the openings during compression of the bellows and sucks during expansion.
- the bellows may for example be formed solely by the walls of the cavity or by a introduced into the cavity bladder (eg, made of a soft, elastic plastic), which preferably completely fills the cavity.
- the sole construction has a multi-layer construction at least in the heel region.
- the multilayer structure comprises at least one cover layer which comprises (at least) a layer of a rigid material arranged above the cavity, at least one intermediate layer containing the cavity made of a compressible material and at least one outsole layer arranged below the cavity.
- Intermediate layer and outsole layer are preferably made of different materials (which are each adapted to the different functions), but in one embodiment can also be made of the same material and even be made in one piece.
- the cover layer can for example, consist solely of the layer of the rigid material; However, it can also be designed as a multilayer, wherein the layer of the rigid material may represent a lowermost, uppermost or embedded layer. In some embodiments, the layer of the rigid material itself may also be multilayered.
- the layer of the rigid material for example, at the same time form an insole, which - although it is usually part of the shoebox - here is to be functionally considered part of the sole construction.
- the insole may also be additionally disposed over the layer of the rigid material.
- the layer of the rigid material forms a cavity covering the rigid plate.
- overlay means that the rigid plate extends horizontally to, and preferably beyond, the edges of the cavity.
- the cavity extends horizontally over a majority of the area of the heel region so that a web of the compressible material or the compressible materials of the at least one intermediate layer remains between the lateral and heel-side outer edges of the sole construction and the cavity.
- the rigid plate covering the cavity extends horizontally beyond the edge of the cavity also over the majority of the web.
- the web extends vertically above the height of the cavity and the median land width is at most 20% of the maximum width of the heel region measured transversely to the direction of travel.
- the cavity has an average height of at least 4 mm, with the cavity preferably having an average height of at least 6 mm for shoes with shoe sizes from about 25 cm in length.
- the compressible material has an average hardness between 30 and 55 Shore A, at least in the region of the web. For example, if the web consists of several different materials, "average hardness" means a hardness averaged over the web volume. For example, the web could approach in a cavity Be harder area than in a more external area or vice versa.
- the plastic material of the wall of the bladder adjacent to the web should be included in the determination of the "average hardness" of the web. If, for example, the wall of the bladder consists of a stiffer, harder material compared to the rest of the web material, this leads to a higher “average hardness" of the compressible material of the web.
- the combination of a large cavity for the bellows (due to the minimum height and the small web widths) with the overlap by a rigid plate and the choice of material for the web forming intermediate layer in terms of their Shore A hardness lead to the desired high air flow rate (of more than 5 ml) with each step of walking or running.
- the covering of the bellows formed in the cavity by the rigid plate ensures that the bellows over its entire horizontal spread, i. including its peripheral areas, is compressed so that its pumping volume is better utilized.
- the compressible material has a hardness between 45 and 55 Shore-A. This allows optimum compressibility with web widths in the range of 10-20% of the maximum width of the heel area measured transversely to the running direction.
- the compressible material is a viscoelastic material, in particular a plastic material, which occurs in the event of a complete discharge following a compression (as occurs in particular when the shoe is lifted off the ground during running) shows a provision of at least 80%, preferably at least 90%, for a period of 0.3 s.
- a viscoelastic Show behavior so that a complete relief of the shoe in the heel area does not lead to an immediate (or erratic) and complete return movement, but to a slower and after a certain period not yet complete reset.
- the compressible material is a viscoelastic material which exhibits a time-dependent but largely reversible deformation (and thus preferably corresponds or approaches the model of a Kelvin body). This ensures a long-lasting pumping action with high throughput.
- a preferred embodiment of the invention is characterized in that the web on its upper side has a wide support surface for the at least one cover layer and the web width decreases starting from the broad support surface down, wherein the adjacent to the cavity inner surface of the web recedes to the outside.
- the wide bearing surface allows a better, more reliable attachment of the cover layer, the bearing surface serving, for example, as a surface for gluing;
- the recession of the web inner wall to the outside provides for a maximum void volume.
- a shoe according to this embodiment is characterized in that the width of the support surface is in the range between 9 mm and 18 mm, with smaller shoe sizes a lower value and larger sizes is preferred for larger shoe sizes.
- the web width starting from the broad contact surface downwards, is initially reduced more strongly and then less at a greater distance from the contact surface, so that an inner surface which recedes outwards in an arc shape is formed.
- the web width decreases starting from the wide support surface down in an upper portion and then increases again in a lower portion, the upper and the lower portion each occupy 20-50% of the height of the cavity. It has been found that this concave recession of the web inner wall in the compression on the occurrence of a target deformation point and thus a more targeted adjustable deformation behavior of the webs and a better (most extensive) compression of the bellows causes.
- the rigid plate has a flexural rigidity, in which a centrally acting force of 1000 N causes a deflection of at most 10% of the width of the plate at rest of the rigid plate at its edges (without Randeincret).
- This limitation of the maximum deflection also leads to the most complete compression of the bellows covered by the rigid plate and avoids undesirable stress on the top layer structure, in particular wrinkling due to excessive sinking of the heel in the load case.
- the outsole layer located below the cavity and optionally the parts (e.g., layers) of the intermediate layer disposed between the cavity and the outsole layer buckle downwardly so that the cavity is flared downwardly.
- This protrusion is preferably about 2 - 4 mm, with shoe sizes from 25 cm length, preferably about 3 - 6 mm.
- the area may bulge about 8 mm. This advantageous measure also contributes to increasing the pumping volume.
- the shoe according to the invention is characterized in that the suction channel connected to the bellows for transporting air from a suction opening in the bellows a minimum cross-sectional area of 3 mm 2 , for shoe sizes from about 25 cm in length has a minimum cross-sectional area of 4 mm 2 .
- This minimum cross-section ensures a lower flow resistance during the intake of the air and thus contributes to a faster and thus (against the background of limited by the step time reset time) extensive recovery in the expansion of the bellows after relieving the heel area.
- the suction opening is covered with a Schmutzabweisgitter (eg plastic grid or mesh) and has it compared to the minimum cross-sectional area of the intake enlarged Minimum area, thereby compensating for the increase in flow resistance caused by the Schmutzabweisgitter.
- a Schmutzabweisgitter eg plastic grid or mesh
- the cover layer over the layer of the rigid material comprises a sock comprising a cushion layer of a softer material and / or a layer adapted to the shape of the heel (shape of the footbed) on the upper side. This increases the comfort, because the heel does not rest directly on the rigid plate.
- the bellows formed in the cavity of the sole structure comprises a bladder made of an elastic plastic material embedded in the cavity, the aspiration channel comprising at least one first plastic tube opening into the bladder and the air supply device comprising at least one second plastic tube connected to the bladder.
- This embodiment allows for prefabrication of the essential parts of the air pumping device and their subsequent introduction into the sole construction. In addition, this simplifies the manufacture of the bellows.
- the selection of the elastic plastic material and the wall thickness of the bladder allow for a design that results in faster expansion of the bladder after relieving the heel area.
- the bubble, the at least one first plastic tube and the at least one second plastic tube are made in one piece from the elastic plastic material and embedded in the cavity of the at least one intermediate layer (of the compressible material). This leads to a further simplification of the production of the sole construction.
- straight and / or bent bending rods are arranged in the bladder, which are attached to the adjacent to the top of the cavity wall of the bladder and on the bottom side of the cavity adjacent wall of the bladder, that they opposite are inclined to the horizontal, wherein the bending bars are elastically deformed upon compression of the bladder.
- FIG. 1 shows a schematic side view of a shoe according to the invention 1.
- the shoe 1 consists of a shaft 2 and a sole construction 3, the top 4 facing the interior of the shoe 1.
- all shoe components which are located between the interior of the shoe 1 and the bottom contacting an outsole of an outsole are to be considered as part of the sole construction. This clarification is necessary here because parts of this sole construction, in particular the insole, can be regarded as part of the shank manufacturing technology.
- the sole construction 3 is sometimes referred to as the bottom of the shoe.
- the sole construction 3 (from bottom to top) comprises an outsole layer 5, an intermediate layer 6 and a cover layer 7.
- each of these layers may in turn consist of several constituents, in particular a plurality of layers.
- the outsole layer 5 and the intermediate layer 6 may be formed of the same material and even made in one piece.
- the outsole layer 5 and the intermediate layer 6 are made of different materials, the respective material being adapted to the function of the layers.
- the shoe according to the invention has an air pumping device for blowing air into the shoe interior.
- the injected into the shoe interior air is preferably sucked in advance at an opening on the outside of the shoe, so that the shoe interior fresh air can be supplied.
- the air injected into the shoe interior may also be drawn in at a location within the shoe interior closer to the entrance (ie, at the upper opening of the shoe interior) than the openings through which the air enters the interior of the shoe Shoe interior is blown.
- the air pumping device has a bellows formed in a cavity in a heel region of the sole structure, an intake passage connected to the bellows for transporting air from the suction port into the bellows, and an air supply device connected to the bellows for passing air from the bellows into the shoe interior.
- the intake passage 11 comprises a tubular conduit which opens into the cavity 10 and out of the intermediate layer 6 in the heel region along the shaft 2 is guided upwards so that the suction port 12 is above the sole structure 3.
- the suction channel 11 is housed for the most part in a connected to the sole structure 3 plastic component, which is either back attached to the shaft 2.
- the plastic component can also be guided within the shaft 2 between an outer shaft and an inner shaft (chuck).
- the suction port 12 can also at the upper edge of the shaft, so on Getting started.
- the intake duct 11 may also be formed in an air supply device arranged laterally on the shoe, as described, for example, in US Pat EP 2 772 151 A1 is described.
- the intake passage 11 may also include a plurality of tubes or hoses leading the air from intake ports to the cavity 10, which may be formed at different locations of the shoe.
- the air supply device 13 may include one or more opening into the cavity 10 channels or lines. The outgoing of the cavity 10 channels of the air supply device 13 may open into openings on the upper side 4 of the sole structure 3. In one embodiment, the air is first pressed from the cavity 10 into a channel of the air supply device 13.
- the channel then branches into a plurality of subchannels, which in turn terminate at openings at the top of the midsole 6.
- An applied on the midsole 6 cover layer consists for example of an insole, which also has through openings at those points where the channels terminate at the top of the intermediate layer, which then open into the interior of the shoe.
- the covering layer 7 consists of several superimposed layers, including the insole, then each of these layers has mutually corresponding openings, which provide for a connection of the air supply device 13 with the shoe interior.
- the intake duct 11 and the air supply device 13 are not connected to separate openings of the cavity, but each with a manifold which opens into the cavity 10 at an opening.
- the air supply comprises a conduit which connects the cavity 10 in the heel region 9 with a distribution cavity arranged below the ball region or toe region, formed in the intermediate layer 6 and / or the covering layer 7, this distribution cavity being provided, for example, with an open-pore material or an air-permeable, wide-meshed but mechanically stable one Tissue or flow is filled, so that the supplied via the line from the cavity 10 air can distribute within the distributor cavity in the ball area.
- the layers disposed above this manifold cavity then contain through holes from which the air distributed in the manifold cavity exits into the shoe interior. Such an arrangement is for example from the document EP 2 218 348 A1 known.
- the sole structure 3, at least in the heel region 9 has a multi-layer structure comprising at least the outsole layer 5, the intermediate layer 6 of a compressible material and a cover layer, which comprises a layer 10 arranged above the cavity of a rigid material.
- the layer of the rigid material forms a cavity 10 covering the rigid plate 8.
- the rigid plate 8 of the embodiment according to FIG. 1 covers the cavity 10 and is formed only in the heel area 9. In alternative embodiments, the rigid plate may also extend beyond the heel region 9.
- the cover layer 7 may consist of several layers, one of which is the layer of the rigid material. In other embodiments, the cover layer 7 may also consist entirely of the rigid material.
- the cover layer 7 comprises the insole. In other embodiments, the insole may be disposed over a separate layer of the rigid material forming the rigid plate.
- FIG. 2 shows a schematic sectional view through the sole structure along the plane AA according to FIG. 1 ,
- the sole construction 3 comprises an outsole layer 5, which below the cavity 10 a Bulge 18 has such that the outsole layer protrudes downward, so that the cavity 10 is increased.
- the sole construction 3 further comprises an intermediate layer 6 of a compressible material.
- the cavity 10 extends horizontally over a majority of the surface of the heel region 9, so that between the lateral and heel-side outer edges of the sole structure 3 and the cavity 10, a web 16 of the compressible material of the intermediate layer (or from the compressible materials of several superimposed Intermediate layers - not in FIG. 2 shown) remains.
- FIG. 2 shows a section through the lateral portions of the web 16.
- the web 16 extends vertically above the height of the cavity 10.
- the average width of the web 16 is at most 20% of the measured perpendicular to the direction of maximum width of the heel region 9.
- the middle web width about 14 - 17% of the measured transverse to the direction of maximum width of the heel area.
- the upper side 23 of the cavity 10 is formed from the underside of the cover layer 7 and the bottom side 24 of the cavity 10 from the upper side of the outsole layer 5.
- the compressible material of the intermediate layer 6 (or - in other embodiments - the compressible materials of the intermediate layers) has, at least in the region of the web 16, an average hardness between 30 and 55 Shore A. Preferably, it has an average hardness between 45 and 55 Shore-A.
- the compressible material is a viscoelastic plastic material which provides a provision of at least 80%, preferably at least 90%, within a period of 0.3 seconds, upon complete relief (sudden lifting of the foot from the bottom surface) abruptly following compression. shows. A period of 0.3 s was chosen for the determination of the reset, because this time corresponds approximately to the time available for expansion at high stepping frequency.
- the intermediate layer As a compressible material for the intermediate layer are preferably polyurethane foam, Ethyl vinyl acetate (EVA) or - preferably - expanded thermoplastic polyurethane (eTPU) with closed cell foam used.
- the intermediate layer is a polyurethane foam having a density between 0.45 and 0.5 g / cm 3 . Preference is given to a plastic whose deformation remains almost completely reversible even after a large number of loading and unloading operations.
- Particularly preferred is an expanded thermoplastic polyurethane (eTPU) with high resilience, which has a (by ball rebound test according to DIN EN ISO 8307 measured) high rebound elasticity with a recess height of over 45%.
- the cover layer 7 comprises a resting on a support surface 17 of the web 16 of the intermediate layer 6 rigid plate 8 made of a rigid material and an overlying insole 15, which is connected (for example, to a Zwickinschlag 21) with the material of the shaft 2.
- the layer of the rigid material forming the rigid plate 8 is preferably glued to the support surface 17 of the web 16.
- the insole 15 is glued to the rigid plate 8.
- the insole 15 can be glued to the material of the shaft 2 in a region in which the materials run flat (lasting impact 21).
- the material of the shaft with the material of the insole is sewn in a special way.
- a (in FIG. 2 not shown) insole be arranged as a further constituent of the cover layer 7.
- the insole may comprise a padding layer of a soft material and / or a layer adapted on the upper side to the shape of the heel.
- FIG. 3 schematically shows an alternative embodiment of the sole structure 3.
- the outsole layer 5 including the protrusion 18 and the webs 16 of the intermediate layer 6 are as in the embodiment according to FIG. 2 educated.
- the air pumping device comprises in the in FIG. 3 illustrated embodiment, a bladder 20 made of a resilient plastic material, which substantially fills the cavity 10.
- the bladder 20 is in this embodiment at the top of the outsole layer 5, on the inner walls of the webs 16 and at the bottom of the cover layer 7 at.
- the rigid plate 8 of the cover layer 7 is formed by the insole 15 itself.
- the material of the shaft 2 is adhesively bonded, for example, to the underside of the insole 15, wherein the composite of shaft 2 and insole 15 is glued to the intermediate layer 6, that is to say in the heel region 9, on the bearing surfaces 17 of the web 16 of the intermediate layer 6. Over the insole 15, a sock 19 of a soft material is arranged.
- FIG. 3 is merely a schematic representation that only simplifies the composite between the shaft 2 and insole 15. In fact, the insole 15 and the material of the shaft 2 are usually made using a so-called lasting impact, as shown in FIG FIG. 2 is shown, glued together.
- the material of the intermediate layer 6 is also above the cavity 10 and below the cover layer 7 and / or may be disposed below the cavity 10 and above the outsole layer 5. This can be the case in particular if several intermediate layers are provided.
- straight and / or bent flexural rods may be disposed in the cavity 10 between the top 23 and the bottom 24 of the cavity 10, which are connected to the material adjacent to the top 23 and the bottom 24, respectively inclined to the horizontal are, wherein the bending bars are elastically deformed upon compression of the cavity 10.
- FIG. 4 Outlines an embodiment in which bending rods 22 within a bladder 20, which fills a cavity 10, are arranged.
- bending rods 22 are preferably made of the material of the bubble, so an elastic plastic. They are so connected to the wall of the bladder 20 that they are inclined relative to the horizontal.
- the bending bars 22 are not straight, but bent, so that they are deformed upon compression of the cavity 10 and thus also the bladder 20 in a certain predetermined manner.
- two or more bladders may be provided with respective intake passages and air supply means, or the cavity 10 may be partitioned by walls into two or more sub cavities each having associated intake passages and air supply means.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
Die Erfindung betrifft einen Schuh mit einer Sohlenkonstruktion, deren Oberseite einem Schuhinnenraum zugewandt ist, und mit einer Luftpumpvorrichtung zum Einblasen von Luft in den Schuhinnenraum, wobei die Luftpumpvorrichtung einen in einem Hohlraum in einem Fersenbereich der Sohlenkonstruktion ausgebildeten Balg, einen mit dem Balg verbundenen Ansaugkanal zum Transportieren von Luft von einer Ansaugöffnung in den Balg und eine mit dem Balg verbundene Luftzuführeinrichtung zum Weiterleiten von Luft aus dem Balg in den Schuhinnenraum des Schuhs aufweist.The invention relates to a shoe with a sole construction, the top of which faces a shoe interior, and with an air pumping device for blowing air into the shoe interior, the air pumping device having a bellows formed in a cavity in a heel region of the sole construction, an intake passage connected to the bellows Transporting air from a suction port into the bellows and having an air supply means connected to the bellows for conveying air from the bellows into the shoe interior of the shoe.
Ein solcher Schuh ist beispielsweise aus den Druckschriften
In der
Wesentlich zum Erzielen einer guten Belüftung des Schuhinnenraums, das heißt eines hohen Luftdurchsatzes, ist es, dass während des Laufens bei jedem Schritt einerseits eine ausreichend große Luftmenge von außen in den Balg hineingesaugt und andererseits danach aus dem Balg in den Schuhinnenraum eingeblasen wird. Um bei jedem Schritt beim Belasten eine möglichst große Luftmenge in den Schuhinnenraum einzublasen, muss nicht nur das Volumen des Balgs maximiert werden; es muss auch dafür gesorgt werden, dass der Balg beim Belasten nahezu vollständig oder zumindest zum größten Teil komprimiert wird, so dass die enthaltene Luft herausgedrückt wird. Eine vollständige oder weitgehende Kompression kann man dadurch erreichen, dass die den Hohlraum umgebende Sohlenkonstruktion sehr nachgiebig oder weich ist, so dass sie durch das Einwirken des Körpergewichts vollständig komprimiert wird. Allerdings muss sich der Balg danach und vor dem nächsten Auftreten (im nächsten Schritt) auch wieder möglichst vollständig ausdehnen und mit Luft füllen. Ein solches Rückstellen erreicht man mit einem möglichst elastisch harten Sohlenmaterial, das den Hohlraum umgibt. Dies ist jedoch eine der vorgenannten Anforderung nach einem weichen Material entgegenstehende Forderung.Essential for achieving a good ventilation of the shoe interior, that is, a high air flow, it is that during running at each step, on the one hand a sufficiently large amount of air from the outside sucked into the bellows and on the other hand then blown from the bellows into the shoe interior. In order to inject the largest possible amount of air into the shoe interior at each loading step, not only the volume of the bellows must be maximized; it must also be ensured that the bellows is almost completely or at least largely compressed during loading, so that the air contained is forced out. Complete or extensive compression can be achieved by the sole construction surrounding the cavity being very pliable or soft, so that it is completely compressed by the action of the body weight. However, after and before the next occurrence (in the next step), the bellows must expand as far as possible and fill with air. Such recovery is achieved with a resilient sole material as possible, which surrounds the cavity. However, this is one of the aforementioned requirement for a soft material contrary requirement.
Ausgehend von diesen Erwägungen ist es eine Aufgabe der Erfindung, einen eine Sohlenkonstruktion und eine Luftpumpvorrichtung aufweisenden Schuh zu schaffen, der einen möglichst hohen Luftdurchsatz bei jedem Schritt einer Geh- oder Laufbewegung ermöglicht.Based on these considerations, it is an object of the invention to provide a shoe construction comprising a sole construction and an air pumping device which allows the highest possible throughput of air at each step of walking or running movement.
Diese Aufgabe wird erfindungsgemäß durch einen Schuh mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen offenbart.This object is achieved by a shoe with the features of
Der erfindungsgemäße Schuh weist eine mit seiner Oberseite einem Schuhinnenraum zugewandte Sohlenkonstruktion und eine Luftpumpvorrichtung zum Einblasen von Luft in den Schuhinnenraum auf. Die Luftpumpvorrichtung weist einen in einem Hohlraum in einem Fersenbereich der Sohlenkonstruktion ausgebildeten Balg, einen mit dem Balg verbundenen Ansaugkanal zum Transportieren von Luft von einer Ansaugöffnung in den Balg und eine mit dem Balg verbundene Luftzuführeinrichtung zum Weiterleiten von Luft aus dem Balg in den Schuhinnenraum auf. Der Ansaugkanal und/oder die Luftzuführeinrichtung können bei einigen Ausführungsformen mehrere parallel wirkende Leitungen (z.B. Röhren, Schläuchen) aufweisen. Andererseits können der Ansaugkanal und die Luftzuführeinrichtung bei einigen Ausführungsformen einen gemeinsamen Leitungsabschnitt umfassen, der in den Hohlraum mündet. Vorzugsweise umfassen der Ansaugkanal und die Luftzuführeinrichtung Ventile, die für die gewünschte Richtung des Lufttransports sorgen. Unter einem "Balg" soll hier funktionell eine Vorrichtung verstanden werden, die ein Luftvolumen allseitig umschließt (mit Ausnahme der Öffnungen zum Ansaugkanal und zur Luftzuführeinrichtung) und die durch die Öffnungen Luft beim Komprimieren des Balgs ausstößt und beim Expandieren ansaugt. Der Balg kann beispielsweise allein durch die Wandungen des Hohlraums oder durch eine in den Hohlraum eingebrachte Blase (z.B. aus einem weichen, elastischen Kunststoff) gebildet sein, die den Hohlraum vorzugsweise vollständig ausfüllt. Die Sohlenkonstruktion hat zumindest in dem Fersenbereich einen Mehrschichtaufbau. Der Mehrschichtaufbau umfasst wenigstens eine Deckschicht, die (zumindest) eine über dem Hohlraum angeordnete Schicht aus einem biegesteifen Material umfasst, wenigstens eine den Hohlraum enthaltende Zwischenschicht aus einem kompressiblen Material und wenigstens eine unter dem Hohlraum angeordnete Laufsohlenschicht. Zwischenschicht und Laufsohlenschicht sind vorzugsweise aus unterschiedlichen Materialien hergestellt (die jeweils an die unterschiedlichen Funktionen angepasst sind), können aber bei einer Ausführungsform auch aus demselben Material und dabei sogar einstückig hergestellt sein. Die Deckschicht kann beispielsweise allein aus der Schicht aus dem biegesteifen Material bestehen; sie kann aber auch mehrschichtig ausgebildet sein, wobei die Schicht aus dem biegesteifen Material eine unterste, oberste oder eingebettete Schicht darstellen kann. Bei einigen Ausführungsformen kann auch die Schicht aus dem biegesteifen Material selbst mehrschichtig ausgebildet sein. Bei weiteren Ausführungsformen kann die Schicht aus dem biegesteifen Material beispielsweise zugleich eine Brandsohle bilden, die - obgleich sie üblicherweise schuhtechnisch Teil des Schaftes ist - hier funktionell als Teil der Sohlenkonstruktion angesehen werden soll. Bei anderen Ausführungsformen kann die Brandsohle auch zusätzlich über der Schicht aus dem biegesteifen Material angeordnet sein. Die Schicht aus dem biegesteifen Material bildet eine den Hohlraum überdeckende biegesteife Platte. "Überdecken" meint hier, dass sich die biegesteife Platte horizontal bis zu den Rändern des Hohlraums und vorzugsweise über diese hinaus erstreckt. Der Hohlraum erstreckt sich horizontal über einen überwiegenden Teil der Fläche des Fersenbereichs, so dass zwischen den seitlichen und fersenseitigen Außenrändern der Sohlenkonstruktion und dem Hohlraum ein Steg aus dem kompressiblen Material bzw. den kompressiblen Materialien der wenigstens einen Zwischenschicht verbleibt. Vorzugsweise erstreckt sich die den Hohlraum überdeckende biegesteife Platte horizontal über den Rand des Hohlraums hinaus auch über den überwiegenden Teil des Stegs. Der Steg erstreckt sich vertikal über die Höhe des Hohlraums und die mittlere Stegbreite beträgt höchstens 20 % der quer zur Laufrichtung gemessenen Maximalbreite des Fersenbereichs. Der Hohlraum weist eine durchschnittliche Höhe von mindestens 4 mm auf, wobei der Hohlraum bei Schuhen mit Schuhgrößen ab etwa 25 cm Länge vorzugsweise eine durchschnittliche Höhe von mindestens 6 mm aufweist. Das kompressible Material weist zumindest im Bereich des Stegs eine durchschnittliche Härte zwischen 30 und 55 Shore-A auf. Besteht beispielsweise der Steg aus mehreren unterschiedlichen Materialien, bedeutet "durchschnittliche Härte" eine über das Stegvolumen gemittelte Härte. Beispielsweise könnte der Steg in einem dem Hohlraum nahen Bereich härter sein als in einem weiter außen liegenden Bereich oder umgekehrt. Bei Ausführungsformen, bei denen der Balg eine in den Hohlraum eingelassene, insbesondere den Hohlraum ausfüllende Blase aus einem elastischen Kunststoffmaterial umfasst, soll das dem Steg benachbarte Kunststoffmaterial der Wandung der Blase in die Bestimmung der "durchschnittliche Härte" des Stegs einbezogen sein. Besteht beispielsweise die Wandung der Blase aus einem im Vergleich zum übrigen Stegmaterial steiferen, elastisch härteren Material, so führt dies zu einer höheren "durchschnittlichen Härte" des kompressiblen Materials des Stegs.The shoe according to the invention has a sole construction with its upper side facing a shoe interior and an air pumping device for blowing air into the shoe interior. The air pumping device has a bellows formed in a cavity in a heel portion of the sole structure, an intake passage connected to the bellows for conveying air from a suction port into the bellows, and an air supply device connected to the bellows for passing air from the bellows into the shoe interior. The intake duct and / or the air supply means may in some embodiments comprise a plurality of parallel-acting ducts (eg tubes, hoses). On the other hand, in some embodiments, the intake passage and the air supply means may include a common duct portion that opens into the cavity. Preferably, the intake duct and the air supply means comprise valves which provide the desired direction of air transport. A "bellows" should be understood to mean functionally a device which encloses an air volume on all sides (with the exception of the openings to the intake duct and the air supply device) and which expels air through the openings during compression of the bellows and sucks during expansion. The bellows may for example be formed solely by the walls of the cavity or by a introduced into the cavity bladder (eg, made of a soft, elastic plastic), which preferably completely fills the cavity. The sole construction has a multi-layer construction at least in the heel region. The multilayer structure comprises at least one cover layer which comprises (at least) a layer of a rigid material arranged above the cavity, at least one intermediate layer containing the cavity made of a compressible material and at least one outsole layer arranged below the cavity. Intermediate layer and outsole layer are preferably made of different materials (which are each adapted to the different functions), but in one embodiment can also be made of the same material and even be made in one piece. The cover layer can for example, consist solely of the layer of the rigid material; However, it can also be designed as a multilayer, wherein the layer of the rigid material may represent a lowermost, uppermost or embedded layer. In some embodiments, the layer of the rigid material itself may also be multilayered. In further embodiments, the layer of the rigid material, for example, at the same time form an insole, which - although it is usually part of the shoebox - here is to be functionally considered part of the sole construction. In other embodiments, the insole may also be additionally disposed over the layer of the rigid material. The layer of the rigid material forms a cavity covering the rigid plate. As used herein, "overlay" means that the rigid plate extends horizontally to, and preferably beyond, the edges of the cavity. The cavity extends horizontally over a majority of the area of the heel region so that a web of the compressible material or the compressible materials of the at least one intermediate layer remains between the lateral and heel-side outer edges of the sole construction and the cavity. Preferably, the rigid plate covering the cavity extends horizontally beyond the edge of the cavity also over the majority of the web. The web extends vertically above the height of the cavity and the median land width is at most 20% of the maximum width of the heel region measured transversely to the direction of travel. The cavity has an average height of at least 4 mm, with the cavity preferably having an average height of at least 6 mm for shoes with shoe sizes from about 25 cm in length. The compressible material has an average hardness between 30 and 55 Shore A, at least in the region of the web. For example, if the web consists of several different materials, "average hardness" means a hardness averaged over the web volume. For example, the web could approach in a cavity Be harder area than in a more external area or vice versa. In embodiments in which the bladder comprises a bladder made of a resilient plastic material which is embedded in the cavity and in particular fills the cavity, the plastic material of the wall of the bladder adjacent to the web should be included in the determination of the "average hardness" of the web. If, for example, the wall of the bladder consists of a stiffer, harder material compared to the rest of the web material, this leads to a higher "average hardness" of the compressible material of the web.
Insbesondere die Kombination eines großen Hohlraums für den Balg (aufgrund der Mindesthöhe und der geringen Stegbreiten) mit der Überdeckung durch eine biegesteife Platte und der Materialwahl für die die Stege formende Zwischenschicht hinsichtlich ihrer Shore-A-Härte führen zu dem gewünschten hohen Luftdurchsatz (von mehr als 5 ml) bei jedem Schritt einer Geh- oder Laufbewegung. Das Überdecken des im Hohlraum ausgebildeten Balgs durch die biegesteife Platte sorgt dafür, dass der Balg über seine gesamte horizontale Ausbreitung, d.h. einschließlich seiner Randbereiche, komprimiert wird, so dass sein Pumpvolumen besser ausgenutzt wird.In particular, the combination of a large cavity for the bellows (due to the minimum height and the small web widths) with the overlap by a rigid plate and the choice of material for the web forming intermediate layer in terms of their Shore A hardness lead to the desired high air flow rate (of more than 5 ml) with each step of walking or running. The covering of the bellows formed in the cavity by the rigid plate ensures that the bellows over its entire horizontal spread, i. including its peripheral areas, is compressed so that its pumping volume is better utilized.
Bei einer bevorzugten Ausführungsform des Schuhs weist das kompressible Material eine Härte zwischen 45 und 55 Shore-A auf. Dies erlaubt eine optimale Kompressibilität bei Stegbreiten im Bereich von 10 - 20 % der quer zur Laufrichtung gemessenen Maximalbreite des Fersenbereichs.In a preferred embodiment of the shoe, the compressible material has a hardness between 45 and 55 Shore-A. This allows optimum compressibility with web widths in the range of 10-20% of the maximum width of the heel area measured transversely to the running direction.
Eine vorteilhafte Weiterbildung der Erfindung ist dadurch gekennzeichnet, dass das kompressible Material ein viskoelastisches Material, insbesondere ein Kunststoff, ist, das bei einer sich an eine Kompression sprunghaft anschließenden vollständigen Entlastung (wie sie insbesondere beim Abheben des Schuhs vom Boden während des Laufens auftritt) innerhalb einer Zeitdauer von 0,3 s eine Rückstellung von mindestens 80 %, vorzugsweise mindestens 90 % zeigt. Diese trägt der Tatsache Rechnung, dass die üblichen elastischen Kunststoffe kein rein federelastisches Verhalten, sondern ein viskoelastisches Verhalten zeigen, so dass eine vollständige Entlastung des Schuhs im Fersenbereich nicht zu einer sofortigen (oder sprunghaften) und vollständigen Rückstellbewegung, sondern zu einem langsameren und nach einer bestimmten Zeitdauer noch nicht vollständigen Rückstellen führt. Vorzugsweise ist das kompressible Material ein viskoelastisches Material, das eine zwar zeitabhängige, aber weitgehend reversible Verformung zeigt (und somit vorzugsweise dem Modell eines Kelvin-Körpers entspricht oder nahekommt). Dies sichert eine langanhaltende Pumpwirkung mit hohem Durchsatz.An advantageous development of the invention is characterized in that the compressible material is a viscoelastic material, in particular a plastic material, which occurs in the event of a complete discharge following a compression (as occurs in particular when the shoe is lifted off the ground during running) shows a provision of at least 80%, preferably at least 90%, for a period of 0.3 s. This takes into account the fact that the usual elastic plastics no purely elastic behavior, but a viscoelastic Show behavior, so that a complete relief of the shoe in the heel area does not lead to an immediate (or erratic) and complete return movement, but to a slower and after a certain period not yet complete reset. Preferably, the compressible material is a viscoelastic material which exhibits a time-dependent but largely reversible deformation (and thus preferably corresponds or approaches the model of a Kelvin body). This ensures a long-lasting pumping action with high throughput.
Eine bevorzugte Weiterbildung der Erfindung ist dadurch gekennzeichnet, dass der Steg an seiner Oberseite eine breite Auflagefläche für die wenigstens eine Deckschicht aufweist und die Stegbreite sich ausgehend von der breiten Auflagefläche nach unten verringert, wobei die an den Hohlraum angrenzende Innenfläche des Stegs nach außen zurücktritt. Dies hat zwei Vorteile: Einerseits erlaubt die breite Auflagefläche eine bessere, zuverlässigere Befestigung der Deckschicht, wobei die Auflagefläche beispielsweise als Fläche für eine Verklebung dient; andererseits sorgt das Zurücktreten der Steg-Innenwandung nach außen für ein maximales Hohlraumvolumen. Vorzugsweise ist ein Schuh gemäß dieser Weiterbildung dadurch gekennzeichnet, dass die Breite der Auflagefläche im Bereich zwischen 9 mm und 18 mm liegt, wobei bei kleineren Schuhgrößen ein geringerer Wert und bei größeren Schuhgrößen ein größerer Wert bevorzugt wird.A preferred embodiment of the invention is characterized in that the web on its upper side has a wide support surface for the at least one cover layer and the web width decreases starting from the broad support surface down, wherein the adjacent to the cavity inner surface of the web recedes to the outside. This has two advantages: On the one hand, the wide bearing surface allows a better, more reliable attachment of the cover layer, the bearing surface serving, for example, as a surface for gluing; On the other hand, the recession of the web inner wall to the outside provides for a maximum void volume. Preferably, a shoe according to this embodiment is characterized in that the width of the support surface is in the range between 9 mm and 18 mm, with smaller shoe sizes a lower value and larger sizes is preferred for larger shoe sizes.
Ausgehend von dieser Weiterbildung ist es bevorzugt, dass sich die Stegbreite ausgehend von der breiten Auflagefläche nach unten zunächst stärker und dann mit größerem Abstand von der Auflagefläche weniger verringert, so dass eine nach außen bogenförmig zurücktretende Innenfläche entsteht. Vorzugsweise verringert sich die Stegbreite ausgehend von der breiten Auflagefläche nach unten in einem oberen Teilbereich und erhöht sie sich dann in einem unteren Teilbereich wieder, wobei der obere und der untere Teilbereich jeweils 20 - 50 % der Höhe des Hohlraums einnehmen. Es hat sich gezeigt, dass dieses konkave Zurücktreten der Steg-Innenwandung bei der Kompression beim Auftreten eine Soll-Deformationsstelle und somit ein gezielter einstellbares Deformationsverhalten der Stege und eine bessere (weitestgehende) Kompression des Balgs bewirkt.Starting from this development, it is preferred that the web width, starting from the broad contact surface downwards, is initially reduced more strongly and then less at a greater distance from the contact surface, so that an inner surface which recedes outwards in an arc shape is formed. Preferably, the web width decreases starting from the wide support surface down in an upper portion and then increases again in a lower portion, the upper and the lower portion each occupy 20-50% of the height of the cavity. It has been found that this concave recession of the web inner wall in the compression on the occurrence of a target deformation point and thus a more targeted adjustable deformation behavior of the webs and a better (most extensive) compression of the bellows causes.
Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Schuhs weist die biegesteife Platte eine Biegesteifigkeit auf, bei der eine mittig einwirkende Kraft von 1000 N bei Auflage der biegesteifen Platte an ihren Rändern (ohne Randeinspannung) eine Durchbiegung von höchstens 10 % der Breite der Platte bewirkt. Diese Begrenzung der maximalen Durchbiegung führt ebenfalls zu einer möglichst vollständigen Kompression des von der biegesteifen Platte überdeckten Balgs und vermeidet eine unerwünschte Beanspruchung des Deckschichtaufbaus, insbesondere eine Faltenbildung durch übermäßiges Einsinken der Ferse im Belastungsfall.In a preferred embodiment of the shoe according to the invention, the rigid plate has a flexural rigidity, in which a centrally acting force of 1000 N causes a deflection of at most 10% of the width of the plate at rest of the rigid plate at its edges (without Randeinspannung). This limitation of the maximum deflection also leads to the most complete compression of the bellows covered by the rigid plate and avoids undesirable stress on the top layer structure, in particular wrinkling due to excessive sinking of the heel in the load case.
Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Schuhs wölben sich die unter dem Hohlraum angeordnete Laufsohlenschicht und gegebenenfalls die zwischen dem Hohlraum und der Laufsohlenschicht angeordneten Teile (z.B. Schichten) der Zwischenschicht nach unten vor, so dass der Hohlraum nach unten erweitert ist. Diese Vorwölbung liegt vorzugsweise bei etwa 2 - 4 mm, bei Schuhgrößen ab 25 cm Länge vorzugsweise bei etwa 3 - 6 mm. Bei Sportschuhen kann sich der Bereich etwa 8 mm vorwölben. Auch diese vorteilhafte Maßnahme trägt zur Erhöhung des Pumpvolumens bei.In a preferred embodiment of the shoe according to the invention, the outsole layer located below the cavity and optionally the parts (e.g., layers) of the intermediate layer disposed between the cavity and the outsole layer buckle downwardly so that the cavity is flared downwardly. This protrusion is preferably about 2 - 4 mm, with shoe sizes from 25 cm length, preferably about 3 - 6 mm. For sports shoes, the area may bulge about 8 mm. This advantageous measure also contributes to increasing the pumping volume.
Vorzugsweise ist der erfindungsgemäße Schuh dadurch gekennzeichnet, dass der mit dem Balg verbundene Ansaugkanal zum Transportieren von Luft von einer Ansaugöffnung in den Balg eine Mindestquerschnittsfläche von 3 mm2, für Schuhgrößen ab etwa 25 cm Länge eine Mindestquerschnittsfläche von 4 mm2, aufweist. Dieser Mindestquerschnitt sichert einen geringeren Strömungswiderstand beim Ansaugen der Luft und trägt damit zu einer schnelleren und somit (vor dem Hintergrund einer durch die Schrittdauer begrenzten Rückstellzeit) weitgehenden Rückstellung bei der Expansion des Balgs nach Entlastung des Fersenbereichs bei. Hierbei ist vorzugsweise die Ansaugöffnung mit einem Schmutzabweisgitter (z.B. Kunststoffgitter oder -netz) überspannt und weist sie eine gegenüber der Mindestquerschnittsfläche des Ansaugkanals vergrößerte Mindestfläche auf, um dadurch die durch das Schmutzabweisgitter verursachte Erhöhung des Strömungswiderstand zu kompensieren.Preferably, the shoe according to the invention is characterized in that the suction channel connected to the bellows for transporting air from a suction opening in the bellows a minimum cross-sectional area of 3 mm 2 , for shoe sizes from about 25 cm in length has a minimum cross-sectional area of 4 mm 2 . This minimum cross-section ensures a lower flow resistance during the intake of the air and thus contributes to a faster and thus (against the background of limited by the step time reset time) extensive recovery in the expansion of the bellows after relieving the heel area. In this case, preferably, the suction opening is covered with a Schmutzabweisgitter (eg plastic grid or mesh) and has it compared to the minimum cross-sectional area of the intake enlarged Minimum area, thereby compensating for the increase in flow resistance caused by the Schmutzabweisgitter.
Bei einer Ausführungsform umfasst die Deckschicht über der Schicht aus dem biegesteifen Material eine eine Polsterschicht aus einem weicheren Material und/oder eine oberseitig an die Form der Ferse (Form des Fußbetts) angepasste Schicht aufweisende Decksohle. Dies erhöht den Tragekomfort, weil die Ferse nicht unmittelbar auf der biegesteifen Platte aufliegt.In one embodiment, the cover layer over the layer of the rigid material comprises a sock comprising a cushion layer of a softer material and / or a layer adapted to the shape of the heel (shape of the footbed) on the upper side. This increases the comfort, because the heel does not rest directly on the rigid plate.
Bei einer bevorzugten Ausführungsform umfasst der in dem Hohlraum der Sohlenkonstruktion ausgebildete Balg eine in dem Hohlraum eingelassene Blase aus einem elastischen Kunststoffmaterial, wobei der Ansaugkanal wenigstens einen in die Blase mündenden ersten Kunststoffschlauch und die Luftzuführeinrichtung wenigstens einen mit der Blase verbundenen zweiten Kunststoffschlauch umfasst. Diese Ausgestaltung gestattet eine Vorfertigung der wesentlichen Teile der Luftpumpvorrichtung und deren anschließendes Einbringen in die Sohlenkonstruktion. Außerdem vereinfacht dies die Herstellung des Balgs. Die Auswahl des elastischen Kunststoffmaterials und der Wandungsdicke der Blase ermöglichen eine Konstruktion, die zu einer schnelleren Expansion des Balgs nach Entlastung des Fersenbereichs führt. Vorzugsweise sind die Blase, der wenigstens eine erste Kunststoffschlauch und der wenigstens eine zweite Kunststoffschlauch einstückig aus dem elastischen Kunststoffmaterial hergestellt und in den Hohlraum der wenigstens einen Zwischenschicht (aus dem kompressiblen Material) eingelassen. Dies führt zu einer weiteren Vereinfachung der Herstellung der Sohlenkonstruktion.In a preferred embodiment, the bellows formed in the cavity of the sole structure comprises a bladder made of an elastic plastic material embedded in the cavity, the aspiration channel comprising at least one first plastic tube opening into the bladder and the air supply device comprising at least one second plastic tube connected to the bladder. This embodiment allows for prefabrication of the essential parts of the air pumping device and their subsequent introduction into the sole construction. In addition, this simplifies the manufacture of the bellows. The selection of the elastic plastic material and the wall thickness of the bladder allow for a design that results in faster expansion of the bladder after relieving the heel area. Preferably, the bubble, the at least one first plastic tube and the at least one second plastic tube are made in one piece from the elastic plastic material and embedded in the cavity of the at least one intermediate layer (of the compressible material). This leads to a further simplification of the production of the sole construction.
Bei einer bevorzugten Weiterbildung des erfindungsgemäßen Schuhs sind in der Blase gerade und/oder gebogene Biegestäbe angeordnet, die an der an die Oberseite des Hohlraums angrenzenden Wandung der Blase und an der an die Bodenseite des Hohlraums angrenzenden Wandung der Blase derart befestigt sind, dass sie gegenüber der Horizontalen geneigt sind, wobei die Biegestäbe beim Zusammendrücken der Blase elastisch deformiert werden. Dadurch kann eine schnellere und vollständigere Rückstellung zur Expansion des Balgs nach Entlastung des Fersenbereichs erreicht werden.In a preferred embodiment of the shoe according to the invention straight and / or bent bending rods are arranged in the bladder, which are attached to the adjacent to the top of the cavity wall of the bladder and on the bottom side of the cavity adjacent wall of the bladder, that they opposite are inclined to the horizontal, wherein the bending bars are elastically deformed upon compression of the bladder. This can be a faster and more complete Resetting to the expansion of the bellows after relief of the heel area can be achieved.
Vorteilhafte und/oder bevorzugte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous and / or preferred developments of the invention are characterized in the subclaims.
Im Folgenden wird die Erfindung anhand von in den Zeichnungen dargestellten bevorzugten Ausführungsbeispielen näher erläutert. In den Zeichnungen zeigen:
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Fig. 1 eine schematische Seitenansicht eines erfindungsgemäßen Schuhs mit Sohlenkonstruktion und Luftpumpvorrichtung; -
Fig. 2 eine schematische Schnittansicht durch den Fersenbereich des Schuhs entlang der EbeneA-A gemäß Figur 1 ; -
Fig. 3 eine schematische Schnittansicht durch den Fersenbereich bei einem alternativen Ausführungsbeispiel; und -
Fig. 4 eine schematische Schnittansicht in Schuhlängsrichtung durch eine Blase bei einem Ausführungsbeispiel, das Biegestäbe innerhalb der Blase enthält.
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Fig. 1 a schematic side view of a shoe according to the invention with sole construction and air pumping device; -
Fig. 2 a schematic sectional view through the heel region of the shoe along the plane AA according toFIG. 1 ; -
Fig. 3 a schematic sectional view through the heel area in an alternative embodiment; and -
Fig. 4 a schematic sectional view in the shoe longitudinal direction through a bladder in an embodiment containing bending rods within the bladder.
Der erfindungsgemäße Schuh weist eine Luftpumpvorrichtung zum Einblasen von Luft in den Schuhinnenraum auf. Die in den Schuhinnenraum eingeblasene Luft wird zuvor vorzugsweise an einer Öffnung an der Außenseite des Schuhs angesaugt, so dass dem Schuhinnenraum Frischluft zugeführt werden kann. Bei einer weniger bevorzugten alternativen Ausführungsform kann die in den Schuhinnenraum eingeblasene Luft auch an einem Ort innerhalb des Schuhinnenraums angesaugt werden, der sich näher am Einstieg (das heißt, an der oberen Öffnung des Schuhinnenraums) befindet als die Öffnungen, durch die die Luft in den Schuhinnenraum eingeblasen wird. Die Luftpumpvorrichtung weist einen in einem Hohlraum in einem Fersenbereich der Sohlenkonstruktion ausgebildeten Balg, einen mit dem Balg verbundenen Ansaugkanal zum Transportieren von Luft von der Ansaugöffnung in den Balg und eine mit dem Balg verbundene Luftzuführeinrichtung zum Weiterleiten von Luft aus dem Balg in den Schuhinnenraum auf.The shoe according to the invention has an air pumping device for blowing air into the shoe interior. The injected into the shoe interior air is preferably sucked in advance at an opening on the outside of the shoe, so that the shoe interior fresh air can be supplied. In a less preferred alternative embodiment, the air injected into the shoe interior may also be drawn in at a location within the shoe interior closer to the entrance (ie, at the upper opening of the shoe interior) than the openings through which the air enters the interior of the shoe Shoe interior is blown. The air pumping device has a bellows formed in a cavity in a heel region of the sole structure, an intake passage connected to the bellows for transporting air from the suction port into the bellows, and an air supply device connected to the bellows for passing air from the bellows into the shoe interior.
Bei dem in
Bei dem erfindungsgemäßen Schuh, von dem ein bevorzugtes Ausführungsbeispiel in
Das kompressible Material der Zwischenschicht 6 (oder - bei anderen Ausführungsformen - die kompressiblen Materialien der Zwischenschichten) weist zumindest im Bereich des Stegs 16 eine durchschnittliche Härte zwischen 30 und 55 Shore-A auf. Vorzugsweise weist es eine durchschnittliche Härte zwischen 45 und 55 Shore-A auf. Bei bevorzugten Ausführungsformen ist das kompressible Material ein viskoelastisches Kunststoffmaterial, das bei einer sich an eine Kompression sprunghaft anschließenden vollständigen Entlastung (plötzliches Abheben des Fußes von der Bodenfläche) innerhalb einer Zeitdauer von 0,3 s eine Rückstellung von mindestens 80 %, vorzugsweise mindestens 90 % zeigt. Eine Zeitdauer von 0,3 s für die Bestimmung der Rückstellung wurde gewählt, weil diese Zeit etwa derjenigen Zeit entspricht, die bei hoher Schrittfrequenz für die Expansion zur Verfügung steht. Als kompressibles Material für die Zwischenschicht werden vorzugsweise Polyurethanschaum, Ethylvinylacetat (EVA) oder - vorzugsweise - expandiertes thermoplastisches Polyurethan (eTPU) mit geschlossen-zelligem Schaum verwendet. Bei einer Ausführungsform besteht die Zwischenschicht aus einem Polyurethanschaum mit einer Dichte zwischen 0,45 und 0,5 g/cm3. Bevorzugt ist ein Kunststoff, dessen Verformung auch nach einer großen Anzahl von Be- und Entlastungen noch nahezu vollständig reversibel bleibt. Besonders bevorzugt ist ein expandiertes thermoplastisches Polyurethan (eTPU) mit hohem Rückstellvermögen, das eine (durch Kugelrückpralltest nach DIN EN ISO 8307 gemessene) hohe Rückprall-Elastizität mit einer Rücksprunghöhe von über 45 % aufweist.The compressible material of the intermediate layer 6 (or - in other embodiments - the compressible materials of the intermediate layers) has, at least in the region of the
Bei dem in
Bei den in den
Bei einer bevorzugten Ausführungsform, insbesondere bei einer Ausführungsform, welche die in
Im Rahmen des Erfindungsgedankens sind zahlreiche alternative Ausführungsformen dankbar. Beispielsweise können in dem Hohlraum 10 zwei oder mehr Blasen mit jeweils zugehörigen Ansaugkanälen und Luftzuführeinrichtungen vorgesehen sein, oder der Hohlraum 10 kann durch Wandungen in zwei oder mehr Teilhohlräume mit jeweils zugehörigen Ansaugkanälen und Luftzuführeinrichtungen aufgeteilt sein.Within the scope of the inventive concept, numerous alternative embodiments are grateful. For example, in the
Claims (17)
- A shoe (1) comprising a sole structure (3) having a top side (4) facing a shoe interior (14), and an air-pumping device for blowing air into the shoe interior (14),
the air-pumping device comprising abellows formed in a cavity (10) in a heel region (9) of the sole structure (3),an intake channel (11) connected to the bellows for transporting air to the bellows from an intake opening (12), andan air supply device (13) connected to the bellows for forwarding air from the bellows into the shoe interior (14) ;the sole structure (3) having, at least in the heel region (9), a multilayer structure comprisingat least one cover layer (7) comprising a layer of a bending stiff material arranged over the cavity (10),at least one intermediate layer (6) of a compressible material, the intermediate layer (6) containing the cavity (10), andat least one outsole layer (5) arranged below the cavity (10) ;the layer of the bending stiff material forming a bending stiff plate (8) that overlaps the cavity (10),
wherein the cavity (10) extends horizontally over most of the surface of the heel region (9) so that a support strip (16) of the compressible material or materials of the at least one intermediate layer (6) remains between the cavity (10) and the lateral and rear outside edges of the sole structure (3), wherein the support strip (16) extends vertically over the full height of the cavity (10) and the average width of the support strip is not more than 20% of the maximum width of the heel region (9) measured transversely to the walking direction;
wherein the cavity (10) has an average height of at least 4 mm, and
wherein the compressible material has an average hardness between 30 and 55 Shore-A at least in the region of the support strip (16). - The shoe according to claim 1, characterised in that the compressible material has an average hardness between 45 and 55 Shore-A.
- The shoe according to claim 1 or 2, characterised in that the cavity (10) has an average height of at least 6 mm.
- The shoe according to any one of claims 1 - 3, characterised in that the compressible material is a viscoelastic material which exhibits a recovery of at least 80% within a period of 0.3 s when a load thereon is abruptly removed entirely following a compression.
- The shoe according to claim 4, characterised in that the compressible material exhibits a recovery of at least 90 % within a period of 0.3 s when a load thereon is abruptly removed entirely following a compression.
- The shoe according to any one of claims 1 - 5, characterised in that the top side of the support strip (16) comprises a wide support surface (17) for the at least one cover layer (7), and the strip width decreases downwardly starting from the wide support surface (17), wherein the inner surface of the strip (16) which borders the cavity recedes to the outside.
- The shoe according to claim 6, characterised in that the width of the support surface (17) is in the range between 9 mm and 18 mm, wherein a smaller value for smaller shoe sizes and a larger value for larger shoe sizes is preferred.
- The shoe according to claim 6 or 7, characterised in that starting from the wide support surface (17) the strip width initially decreases strongly and then decreases less with increasing distance from the support surface, so that an interior surface is formed that arches outwards.
- The shoe according to any one of claims 6 - 8, characterised in that starting from the wide support surface (17) the strip width decreases downwardly in an upper subregion and then increases again in a lower subregion, wherein the upper and the lower subregions each occupy 20 - 50 % of the height of the cavity (10).
- The shoe according to any one of claims 1 - 9, characterised in that the bending stiff plate (8) has a bending stiffness with which a force of 1000 N acting on the middle of the bending stiff plate (8) that is supported at its edges causes a deflection of not more than 10% of the width of the plate (8).
- The shoe according to any one of claims 1 - 10, characterised in that the outsole layer (5) arranged below the cavity (10) and, if present, the parts of the intermediate layer (6) arranged between the cavity (10) and the outsole layer (5) protrude downwards, so that the cavity (10) is extended downwards.
- The shoe according to any one of claims 1 - 11, characterised in that the intake channel (11) connected to the bellows for transporting air from an intake opening (12) to the bellows has a minimum cross sectional area of 3 mm2, for shoe sizes longer than about 25 cm a minimum cross sectional area of 4 mm2.
- The shoe according to claim 12, characterised in that the intake opening (12) is screened with a with a dirt-repellent mesh and has a larger minimum area than the minimum cross sectional area of the intake channel to compensate for the greater flow resistance caused by the dirt-repellent mesh.
- The shoe according to any one of claims 1 - 13, characterised in that the cover layer (7) over the layer of bending stiff material comprises a cushion layer made from a softer material and/or a cover sole with a layer that has been adapted on top to the shape of the heel.
- The shoe according to any one of claims 1 - 14, characterised in that the bellows formed in the cavity (10) of the sole structure (3) comprises a bladder (20) made from an elastic plastic material which is inserted in the cavity (10), wherein the intake channel (11) comprises at least one first plastic pipe which opens into the bladder (20), and the air supply device (13) comprises at least one second plastic pipe which is connected to the bladder (20).
- The shoe according to claim 15, characterised in that the bladder (20), the at least one first plastic pipe and the at least one second plastic pipe are manufactured as a single part from the elastic plastic material and inserted in the cavity (10) in the at least one intermediate layer (6) of the compressible material.
- The shoe according to claim 15 or 16, characterised in that straight and/or curved bending rods (22) are arranged inside the bladder (20) and are fastened to the wall of the bladder (20) adjacent to the top side (23) of the cavity (10) and to the wall of the bladder (20) adjacent to the bottom side (24) of the cavity (10) in such manner that they are inclined relative to the horizontal, and the bending rods (22) are deformed elastically when the bladder (20) is squeezed.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16197329.2A EP3318147B1 (en) | 2016-11-04 | 2016-11-04 | Shoe with a sole construction and an air pump apparatus for blowing air into the inside of a shoe |
ES16197329T ES2745254T3 (en) | 2016-11-04 | 2016-11-04 | Shoe with a sole structure and an air pumping device for blowing air into an interior shoe space |
US15/415,257 US10477914B2 (en) | 2016-11-04 | 2017-01-25 | Shoe having a sole structure and an air pump device for blowing air into a shoe interior space |
CA3055397A CA3055397C (en) | 2016-11-04 | 2017-10-20 | Shoe having a sole structure and an air-pumping device for blowing air into a shoe interior |
PCT/EP2017/076885 WO2018082942A1 (en) | 2016-11-04 | 2017-10-20 | Shoe having a sole structure and an air-pumping device for blowing air into a shoe interior |
CN201780068066.6A CN110325069B (en) | 2016-11-04 | 2017-10-20 | Shoe with a sole structure and an air pumping device for blowing air into the interior of the shoe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16197329.2A EP3318147B1 (en) | 2016-11-04 | 2016-11-04 | Shoe with a sole construction and an air pump apparatus for blowing air into the inside of a shoe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3318147A1 EP3318147A1 (en) | 2018-05-09 |
EP3318147B1 true EP3318147B1 (en) | 2019-08-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16197329.2A Active EP3318147B1 (en) | 2016-11-04 | 2016-11-04 | Shoe with a sole construction and an air pump apparatus for blowing air into the inside of a shoe |
Country Status (6)
Country | Link |
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US (1) | US10477914B2 (en) |
EP (1) | EP3318147B1 (en) |
CN (1) | CN110325069B (en) |
CA (1) | CA3055397C (en) |
ES (1) | ES2745254T3 (en) |
WO (1) | WO2018082942A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017176480A (en) * | 2016-03-30 | 2017-10-05 | 株式会社インフォム | Ventilation shoe and non-return valve |
US20190225784A1 (en) | 2018-01-24 | 2019-07-25 | Nike, Inc. | Sole structures including polyolefin plates and articles of footwear formed therefrom |
CA3044999C (en) * | 2018-06-04 | 2023-09-19 | Tbl Licensing Llc | Waterproof boot with internal convection system |
CN109393643B (en) * | 2018-10-18 | 2020-09-29 | 阜阳金马鞋业有限公司 | Dustproof shoes |
EP3738457B1 (en) | 2019-05-13 | 2021-11-10 | ATMOS airwalk ag | Shoe with a ventilation device switchable between fresh air supply and circulated air |
WO2021016037A1 (en) | 2019-07-19 | 2021-01-28 | Nike Innovate C.V. | Sole structures including polyolefin plates and articles of footwear formed therefrom |
US11696620B2 (en) | 2019-07-19 | 2023-07-11 | Nike, Inc. | Articles of footwear including sole structures and rand |
CA3209671C (en) * | 2021-12-31 | 2024-01-16 | Marc CORMIER | Auxiliary or integrated inner sole structure for footwear |
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US5191727A (en) * | 1986-12-15 | 1993-03-09 | Wolverine World Wide, Inc. | Propulsion plate hydrodynamic footwear |
CN1011285B (en) * | 1987-12-07 | 1991-01-23 | 朱志刚 | Unidirectional air-blow shoe and shoe-pad |
US5860225A (en) * | 1993-04-16 | 1999-01-19 | Breeze Technology | Self-ventilating footwear |
US6247248B1 (en) * | 1998-06-15 | 2001-06-19 | Breeze Technology | Ventilation system and method for footwear |
US6044577A (en) * | 1998-09-28 | 2000-04-04 | Breeze Technology | Self-ventilating footwear |
IT1304429B1 (en) * | 1998-11-24 | 2001-03-19 | Ricco Bruno | FOOTWEAR WITH ACTIVE AIR CONDITIONING DEVICE. |
US20020194747A1 (en) * | 2001-06-21 | 2002-12-26 | Passke Joel L. | Footwear with bladder filter |
US7793431B2 (en) * | 2007-02-07 | 2010-09-14 | Yue's Hong Kong Invention Limited | Energy recycling footwear |
EP2218348B1 (en) | 2009-02-17 | 2013-08-14 | MSC Schweiz AG | Sole construction for shoes with air pump device |
CN201444998U (en) * | 2009-04-24 | 2010-05-05 | 鲁群收 | Convenient and clean type breathing shoes |
EP2688435B1 (en) | 2011-03-24 | 2016-03-02 | ATMOS airwalk ag | Sole construction having an air pumping device |
US10849387B2 (en) * | 2012-09-20 | 2020-12-01 | Nike, Inc. | Sole structures and articles of footwear having plate moderated fluid-filled bladders and/or foam type impact force attenuation members |
EP2772151A1 (en) | 2013-03-01 | 2014-09-03 | ATMOS airwalk ag | Shoe with active air ventilation |
-
2016
- 2016-11-04 EP EP16197329.2A patent/EP3318147B1/en active Active
- 2016-11-04 ES ES16197329T patent/ES2745254T3/en active Active
-
2017
- 2017-01-25 US US15/415,257 patent/US10477914B2/en active Active
- 2017-10-20 CN CN201780068066.6A patent/CN110325069B/en active Active
- 2017-10-20 CA CA3055397A patent/CA3055397C/en active Active
- 2017-10-20 WO PCT/EP2017/076885 patent/WO2018082942A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
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CA3055397C (en) | 2021-09-28 |
WO2018082942A1 (en) | 2018-05-11 |
EP3318147A1 (en) | 2018-05-09 |
CA3055397A1 (en) | 2018-05-11 |
CN110325069B (en) | 2021-05-18 |
US20180125151A1 (en) | 2018-05-10 |
ES2745254T3 (en) | 2020-02-28 |
US10477914B2 (en) | 2019-11-19 |
CN110325069A (en) | 2019-10-11 |
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