EP2454959A1 - Mehrkomponenten-Sohlenstützanordnung für Sportschuhe - Google Patents

Mehrkomponenten-Sohlenstützanordnung für Sportschuhe Download PDF

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Publication number
EP2454959A1
EP2454959A1 EP10191990A EP10191990A EP2454959A1 EP 2454959 A1 EP2454959 A1 EP 2454959A1 EP 10191990 A EP10191990 A EP 10191990A EP 10191990 A EP10191990 A EP 10191990A EP 2454959 A1 EP2454959 A1 EP 2454959A1
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EP
European Patent Office
Prior art keywords
midsole
sole assembly
assembly according
region
foot
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.)
Withdrawn
Application number
EP10191990A
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English (en)
French (fr)
Inventor
Andreas Bennert
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Individual
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Individual
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Filing date
Publication date
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Priority to EP10191990A priority Critical patent/EP2454959A1/de
Publication of EP2454959A1 publication Critical patent/EP2454959A1/de
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/06—Running shoes; Track shoes
    • 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
    • A43B13/026—Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
    • 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
    • A43B13/125—Soles with several layers of different materials characterised by the midsole or middle layer
    • 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
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/22—Supports for the shank or arch of the uppers
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/24—Insertions or other supports preventing the foot canting to one side , preventing supination or pronation

Definitions

  • the present invention relates generally to an article of sports footwear and, in particular, to an article of sports footwear comprising a multicomponent sole support assembly.
  • a usual article of sports footwear consists of two primary elements, an upper and a sole structure.
  • the upper provides a covering for the foot that positions and supports the foot with respect to the sole.
  • the sole assembly is attached to a lower surface of the upper and locates between the foot and the ground.
  • the sole assembly may provide traction and control foot motions, such as pronation and supination.
  • the sole has to provide enough support to foot, not being too soft, which may actually drain energy from the wearer.
  • the sole structure of sports footwear comprises multiple layers traditionally referred to as insole, midsole and outsole.
  • Optional insole is a thin, comfort enhancing cushioning layer located within the upper and next to the lower surface of the foot.
  • the midsole is traditionally attached to the upper along the entire length of the upper, forms a middle layer of the sole assembly and plays a major role in providing cushioning and controlling foot motions.
  • the outsole is a ground-contacting element of footwear and is usually made from a durable textured material in order to improve traction.
  • a conventional midsole is primarily made from polymer foam materials like ethylvinylacetate (EVA) or polyurethane (PU), which compress resiliently under an applied load to attenuate ground reaction forces created by impacts of physical activity.
  • EVA ethylvinylacetate
  • PU polyurethane
  • the properties of the polymer foam material in the midsole depend on various factors, such as, a dimensional configuration of the midsole and the physical characteristics of the polymer foam material. By altering these properties the footwear is made to meet the demands of the activity for which it is intended. For example, during such physical activities like running or even fast walking a foot undergoes certain movements called, as seen from the rear view, pronation and supination, or, an outwards and inwards rolling, respectively.
  • Excessive pronation may be a potential reason for foot or leg injury, and for this reason, in addition to polymer foam material, conventional midsoles may include stability devices that resist over-pronation, disclosed in US2009100710 , and moderators that distribute ground reaction forces, disclosed in W02010104824 .
  • soles including pressurized fluid-filled bladders, disclosed in US4219945 and US2010077556 , as well as and non-pressurized fluid-filled chambers, disclosed in US20050178025 and US2010170110 , are known.
  • the use of EVA material of different densities in order to stabilize a midsole of sports footwear is disclosed in US6061929 .
  • a midsole being a major member of a sole assembly has also undergone certain modifications.
  • a two part midsole assembly is disclosed in W02010085485 .
  • the present invention is generally directed to a multicomponent sole support assembly for an article of sports footwear, in particular to the midsole structure.
  • the footwear to which the invention is related is intended in particular for running disciplines.
  • the assembly of the present invention provides cushioning and support for the rear- and forefoot as well as for foot arch region utilizing structure elements embodied and broadly described herein. It is, therefore, clear to those skilled in art, that such an assembly provides improved cushioning and support for an article of sports footwear.
  • a multicomponent sole support assembly for sports footwear particularly intended for running, wherein a sole support assembly comprises a midsole and an outsole structural units, both comprised of several elements.
  • a sole support assembly comprises a midsole and an outsole structural units, both comprised of several elements.
  • both the midsole and the outsole may be generally divided into three regions, namely, a rearfoot-, a midfoot-and a forefoot regions.
  • elements of the sole support assembly may extend through two regions or through the length of a whole shoe, for example, thus not being divided into the mentioned regions.
  • a midsole support cradle element is provided.
  • this multitask element runs practically through the whole length and width of the shoe, beginning at the rear and extending towards the toes.
  • the midsole support cradle element is preferably made of a first density EVA foam.
  • the rear part of the midsole support cradle element may be referred as a cushioning bed element, since it is the first to make a ground contact in running, thus acting as a shock absorber.
  • a heel rocker element is provided.
  • This element is a primary part of a midsole support assembly.
  • a heel rocker element is preferably made of a second density EVA foam and placed primarily over the total breadth of the midsole, lightly in the front of the heel bone, and on the medial side of the sole it extends further to the forefoot region, possibly through the length of the shoe towards the toes.
  • This element may be constructed as a single piece or two/several separate pieces, corresponding to the rear- and mid-/forefoot regions. Heel rocker urges the foot to roll forward from the first contact to the stand phase and provides control over foot twist movements, in particular, during pronation.
  • a carbon arch element is provided. This element is located in the middle (midfoot) part of the midsole. This ultralight element is made of carbon and bedded over the cradle support element and heel rocker element underneath the arch of the foot. This element supports the foot's arch and controls the longitudinal torsion of the foot.
  • an outsole support structure is provided, in particular its forefoot region.
  • the most distinctive features of an outsole herein are the rubber lateral wall element and the toe lift element.
  • the rubber lateral wall element runs on the lateral side of the shoe's outsole from the midfoot towards the toes and controls and guides the foot movements.
  • a toe lift element being practically a specially shaped tip of an outsole, spreads up and forward underneath the midsole cradle support element, lifting the toes so that during physical activity, like running, the foot rolls faster thus saving energy.
  • the way of a positioning of structural elements constructed from first and second density EVA foams is provided. These elements, constructed from different density EVA foam are positioned in such a way, that they form a bridge from under heel till forefoot, thus enabling a smooth rolling and directed guidance of the foot during running.
  • a 'medial side' is referred as an inner part of the foot.
  • a 'lateral side' is referred as an outer side of the foot.
  • Dotted lines are indicative of a decorative embossing and do not refer to any structural division.
  • first density EVA' is related to ethylvinylacetate foam of e.g. conventional density
  • second density EVA' - for ethylvinylacetate foam of higher density than first density EVA.
  • FIG. 1 illustrates an article of sports footwear 11, incorporating a multicomponent sole support assembly, constructed according to a preferred embodiment of an invention.
  • FIG.1 provides a general view on a sports shoe 11 from a lateral side.
  • the sports shoe 11 includes an upper 30 and a sole assembly, secured to the upper.
  • a sole assembly according to a preferred embodiment of an invention, comprises a midsole 10 and outsole 20.
  • a multicomponent sole support assembly constructed according to a preferred embodiment of an invention, will be referred as 'sole'. Both components of a sole, a midsole and an outsole, will be further disclosed in more details.
  • a sole may also comprise an insole, which is not described further herein.
  • FIG. 2 provides a dimensional section view of a sole when looking upward from the bottom of the shoe, constructed according the a preferred embodiment of the invention.
  • An outsole 20 and a midsole 10 are depicted.
  • FIG.2 shows that, a midsole, generally, consists here of three main components, a support cradle element 3, a heel rocker 2 and a carbon arch 4. The combination of these midsole structural components, along with the outsole construction and shape provide a new assembly, that will be further disclosed in more detail.
  • FIG. 3 and 4 illustrate a sole for a sports shoe from medial (inner) and lateral (outer) side views, respectively.
  • Shoe sole comprises an outsole 20, which directly contacts the ground and a midsole 10.
  • a sole may be divided into three general regions: a heel (rear) region, a midfoot (arch) region and a forefoot region, indicated on FIG. 1 , 3 and 4 by Roman numerals I, II and III, respectively.
  • Heel region I corresponds with rear portions of the foot, including the heel bone.
  • Midfoot region II generally corresponds with the arch of the foot.
  • Forefoot region III corresponds with the toes and metatarsal bones.
  • Medial ( FIG. 3 ) and lateral sides ( FIG. 4 ) extend through each of the regions I-III and correspond with the opposite sides of footwear 11.
  • Regions I-III are not intended to define precise areas or parts of a footwear 11. Rather, regions I-III are intended to represent general areas of footwear 11 to aid in the following description.
  • a midsole support cradle element 3 is provided.
  • this multitask element runs practically through the whole length and width of the shoe, beginning at the rear and extending towards the toes.
  • Support cradle element is preferably made of the first density ethylvinylacetate (EVA) foam.
  • EVA first density ethylvinylacetate
  • the rear part of the midsole support cradle element may be referred as a cushioning bed element 1, being a soft, rounded member, which is the first to make a ground contact when foot touches the ground, and which is optimized for a sufficient degree of moderation of the impact force.
  • a support cradle element 3 is primarily intended to provide cushioning and resilient support during foot movement.
  • a heel rocker element 2 is provided.
  • This element 2 is the most important member of the rearfoot sole support structure (region I), and extends over the total breadth of the rear part of the midsole, lightly in the front the heel bone. It is placed on the midsole support cradle element 3, which includes a rearfoot cushioning bed element 1.
  • the heel rocker element continues further to the forefoot region and possibly further toward the toe region.
  • FIG.3 and 4 provide a sideview of the heel rocker element 2, however, FIG. 6 shows a location of element 2 from above.
  • the heel rocker element 2 continues from the foot rear, spreading under the arch element 4 and extending to the forefoot region, and in this case practically over the full length of the medial side of the foot up to the big toe, particularly, under the first metatarsal bone and the big toe. In the forefoot region the heel rocker element thus only extends at the medial side.
  • Heel rocker element 2 acts like a rocking chair, rolling the rearfoot from the first ground contact to the stand phase.
  • Heel rocker 2 is built from a second density EVA foam, which has a higher density than the first density EVA foam, and having higher firmness/hardness. Therefore it provides an early control over pronation of the rear I and the mid foot II, and during foot rolling, also in a forefoot region III it controls a pronation movement, or prevents a weight overload on the inside of the sole.
  • the heel rocker element 2 provides an optimal control over pronation of the foot from the moment when the heel is making the first ground contact till the moment when the toes are taking an upload during the push off phase.
  • a heel rocker element 2 provides an optimal stability on the medial and on the lateral sides of the rear foot and impulses the foot to roll forward to the stand phase. It should be noted, that, according to a certain embodiment of the invention, a heel rocker element 2 may be represented as a single solid member. However it is not mandatory, and, dependent on the manufacturing method, an element 2 may consist of two separate pieces, a solid three-dimensional rear-foot piece and a thin mid-/forefoot member spreading underneath arch element 4 towards the toes.
  • a carbon arch element 4 refers to a midfoot (arch) structural support part II of a midsole and is bedded into the midfoot region, over elements 2 and 3. Made from carbon this element delivers a midfoot support and reduces the weight of the shoe.
  • the design of a carbon cradle element 4 allows an efficient support of the foot arch and enables control over the longitudinal torsion of the foot.
  • an outsole 20 also has some important features, in particular in its forefoot region III.
  • a forefoot region of the outsole III comprises in certain embodiments such elements as a rubber lateral wall element 5 and a toe lift 6.
  • These structural elements provide important technical features for a sole support assembly.
  • a lateral rubber wall element 5 is located on the lateral side of sole of the sports shoe and is depicted on FIG. 1 and 4.
  • FIG. 3 does not provide a view of this element since it represents the medial side view of the sole.
  • a rubber lateral wall element 5 runs from the base of the shoe up to the end of the little toe. It is directed to provide an optimal control of the supination of the foot and to optimize the guidance of the foot during the push off phase.
  • a toe lift 6 , or a tip of an outsole, provided by the outsole support assembly, runs through the forefoot length and can be recognized by its shape on the sole tip.
  • a bottom view of a shoe sole ( FIG. 5 ), a view from above on the shoe (mid)sole ( FIG.6 ), as well as a dimensional section view of a shoe sole ( FIG.2 ) provide an outlook on how the shoe tip is shaped.
  • a toe lift feature 6 is fashioned to improve the energy saving characteristics of the sports shoe.
  • the toe lift element 6 facilitates the foot rolling from the stand phase to the push off phase, the foot rolls faster from midfoot forward to the toes by saved energy, thus enabling the wearer to run or walk faster with no additional energy consumption. This is an important technical development, in particular, referring to a running shoe, since during running competitions every second counts and any improvement in footwear design which would help an athlete to save power is valuable for the sports footwear industry.
  • a midsole support cradle element 3 (including a cushioning bed element 1) and a heel rocker element 2 form a continuous bridge from the heel until the forefoot and toes.
  • Elements 3 and 2 are constructed from the first and second density EVA foam, correspondingly. The density of the latter has been optimized so as to provide a sufficient guidance of the foot into the correct position during running.
  • the structure of the shoe, wherein a midsole includes those different density EVA elements, positioned in a way to form a continuous bridge, in accordance with some embodiment of the invention, enables an efficient midsole support assembly, the advantages of which will be described next.
  • FIG.7 provides a schematic representation of the foot movement during running. Foot movements are divided into four general phases.
  • Phase 00 foot makes a first contact to the ground. A heel part of the shoe takes a ground forces impact.
  • Phase O1 foot rolls from the first ground contact to the stand phase.
  • Phase 02 stand phase. During phases 01-02 ankle and heel at the greatest flexion. Foot arch acts like a shock absorber.
  • Phase 03 push-off. Foot leaves the ground.
  • At phase 00 foot is in a supinated position (the load weight in on the outside), with rear foot inverted.
  • the ankle is dorsiflexing, or making a movement, which decreases the angle between the superior surface of the foot and the leg, which makes a foot to pronate (the load weight is on the inside of the foot). Pronation allows the foot to be flexible and absorb the impact forces of landing.
  • the foot begins to re-supinate. This inverts the rear foot, moving the foot into a more rigid position to allow for a stronger push-off during phase 03.
  • the sports shoe incorporating a multicomponent sole support assembly, according to the preferred embodiment of invention provides sufficient cushioning and support during running phases 00-03, thus enabling the most efficient performance by its energy saving properties.
  • a cushioning bed 1 and heel rocker 2 elements are the first to receive an impact from ground forces during phase 00, and take control on over-pronation and supination.
  • a heel rocker element 2 (primarily its rearfoot part) facilitates foot rolling through phase 01 to the stand phase 02. During phases 01-02, when the ankle and heel are at the greatest tension the sufficient foot support is needed.
  • a carbon cradle element 4 When the foot uptakes a stand position (phase 02) a carbon cradle element 4 provides a support to the arch and a mid-/forefoot part of a heel rocker element 2 ( FIG.6 ) controls the pronation movement of the foot.
  • a bridge constructed from different density EVA foam, formed by elements 2 and 3 (the latter also includes element 1) guides the foot into a correct position during rolling throughout phases 01- 03.
  • a forefoot part of element 2 controls foot pronation till the moment when the toes are taking an upload during push-off phase 03, and an outsole rubber lateral wall element 5 guides the foot during phase 03, providing a control over a supination movement.
  • An elongated, shaped structure of an outsole, namely a toe lift element 6, efficiently facilitates a foot movement during phase 03, enabling more powerful push-off by energy saved.
  • the midsole and outsole structurural elements of a multicomponent sole support assembly provide both flexible and rigid support for a wearer.
  • Foot biomechanics is highly complex and dependent on the individual. For example, runner, being an excessive supinator, will typically land in the inverted position and lose the shock-absorbing benefits of the normal pronation movements, this being likely to be prone to stress fractures, because of the highly repetitive impact forces. If the runner pronates too far or too quickly, the rotation forces acting on the tibia bone and knee joints may lead to problems with knee, as well as Achilles and foot soft-tissue injuries. Consequently, adequately supportive sports footwear may eliminate at least some problems connected with individual characteristics of a person.
  • the materials have been mentioned as examples only. It would naturally be possible to provide the midsole support cradle and the heel rocker element from other alternative materials than the ethylvinylacetate (EVA) foam having similar characteristics, such as polyurethane (PU). Also it is naturally possible to produce the arch element from some other durable material than carbon.
  • EVA ethylvinylacetate
  • the different elements may be produced as separate pieces, or it is also possible to produce combined elements of single pieces, which may also have varying firmness in different areas of the of the piece.
  • the heel rocker element can extend to the forefoot region as a single piece, but it alternatively possible to provide the rear heel rocker and the front heel rocker parts as separate pieces.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP10191990A 2010-11-19 2010-11-19 Mehrkomponenten-Sohlenstützanordnung für Sportschuhe Withdrawn EP2454959A1 (de)

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN103349397A (zh) * 2013-07-18 2013-10-16 茂泰(福建)鞋材有限公司 鞋底以及鞋
CN107927998A (zh) * 2017-11-23 2018-04-20 安踏（中国）有限公司 一种运动鞋鞋底、其制备方法和运动鞋
IT201700028991A1 (it) * 2017-03-16 2018-09-16 Northwave S R L Calzatura perfezionata con supporto dell'arco plantare
CN108542040A (zh) * 2018-06-26 2018-09-18 安踏（中国）有限公司 一种跑鞋鞋底及其应用
USD874104S1 (en) 2018-05-18 2020-02-04 Nike, Inc. Shoe
US10681957B2 (en) 2015-09-17 2020-06-16 Daniel Thomas Duarte Suspension bridging shoe
USD933341S1 (en) 2018-05-18 2021-10-19 Nike, Inc. Shoe
CN113892727A (zh) * 2016-11-30 2022-01-07 耐克创新有限合伙公司 鞋类的鞋跟结构
CN114980772A (zh) * 2020-01-23 2022-08-30 云上股份有限公司 具有净空间的中底

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103349397A (zh) * 2013-07-18 2013-10-16 茂泰(福建)鞋材有限公司 鞋底以及鞋
US10681957B2 (en) 2015-09-17 2020-06-16 Daniel Thomas Duarte Suspension bridging shoe
CN113892727B (zh) * 2016-11-30 2024-04-05 耐克创新有限合伙公司 鞋类的鞋跟结构
US11737515B2 (en) 2016-11-30 2023-08-29 Nike, Inc. Footwear heel structure
CN113892727A (zh) * 2016-11-30 2022-01-07 耐克创新有限合伙公司 鞋类的鞋跟结构
WO2018167691A1 (en) * 2017-03-16 2018-09-20 Northwave S.R.L. Shoe with plantar arch supporting element
IT201700028991A1 (it) * 2017-03-16 2018-09-16 Northwave S R L Calzatura perfezionata con supporto dell'arco plantare
CN107927998B (zh) * 2017-11-23 2024-02-09 安踏（中国）有限公司 一种运动鞋鞋底、其制备方法和运动鞋
CN107927998A (zh) * 2017-11-23 2018-04-20 安踏（中国）有限公司 一种运动鞋鞋底、其制备方法和运动鞋
USD874104S1 (en) 2018-05-18 2020-02-04 Nike, Inc. Shoe
USD928478S1 (en) 2018-05-18 2021-08-24 Nike, Inc. Shoe
USD929087S1 (en) 2018-05-18 2021-08-31 Nike, Inc. Shoe
USD933341S1 (en) 2018-05-18 2021-10-19 Nike, Inc. Shoe
CN108542040A (zh) * 2018-06-26 2018-09-18 安踏（中国）有限公司 一种跑鞋鞋底及其应用
CN108542040B (zh) * 2018-06-26 2024-02-06 安踏（中国）有限公司 一种跑鞋鞋底及其应用
CN114980772A (zh) * 2020-01-23 2022-08-30 云上股份有限公司 具有净空间的中底
CN114980772B (zh) * 2020-01-23 2024-04-23 云上股份有限公司 具有净空间的中底

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