EP0553736A1 - Semelle de chaussure - Google Patents

Semelle de chaussure Download PDF

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Publication number
EP0553736A1
EP0553736A1 EP93101028A EP93101028A EP0553736A1 EP 0553736 A1 EP0553736 A1 EP 0553736A1 EP 93101028 A EP93101028 A EP 93101028A EP 93101028 A EP93101028 A EP 93101028A EP 0553736 A1 EP0553736 A1 EP 0553736A1
Authority
EP
European Patent Office
Prior art keywords
shoe sole
sole according
chambers
core
shoe
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.)
Granted
Application number
EP93101028A
Other languages
German (de)
English (en)
Other versions
EP0553736B1 (fr
Inventor
Bruno Kächele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilhelm Kachele Kautschuk- und Kunststoffwaren-Fabrik GmbH
Original Assignee
Wilhelm Kachele Kautschuk- und Kunststoffwaren-Fabrik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wilhelm Kachele Kautschuk- und Kunststoffwaren-Fabrik GmbH filed Critical Wilhelm Kachele Kautschuk- und Kunststoffwaren-Fabrik GmbH
Publication of EP0553736A1 publication Critical patent/EP0553736A1/fr
Application granted granted Critical
Publication of EP0553736B1 publication Critical patent/EP0553736B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials

Definitions

  • the invention relates to a shoe sole for a shoe unit.
  • shoe soles which consist of a material which has approximately the same bending strength in all directions, that is to say the material of the shoe sole is, on its own, just as rigid as at right angles to a curvature axis lying parallel to the longitudinal axis of the shoe unit.
  • the material of the shoe sole is, on its own, just as rigid as at right angles to a curvature axis lying parallel to the longitudinal axis of the shoe unit.
  • the shoe sole should be as supple as possible about the axis transverse to the longitudinal axis of the shoe unit, while the shoe sole should have a higher rigidity at right angles to it, so that it cannot deform in this direction and point loads do not result in a correspondingly small-area deformation of the shoe sole lead on the inside where the sole of the foot rests.
  • the shoe soles therefore have a relatively high flexural strength and, in order to achieve this, a corresponding strength. With the strength of the shoe sole, its weight also increases.
  • the material of the shoe sole which is homogeneous per se, is either foamed or, again with homogeneous shoe sole material, individual air chambers are provided in the shoe sole, which are either closed to the outside or ventilated via throttle openings.
  • a sandwich-like structure is used in the new shoe sole, the plate-like or sheet-like core of the sole giving the different bending stiffness in the longitudinal and transverse directions.
  • the sole of the shoe offers little resistance to the curvature of the shoe during the rolling movement of the foot while running, while a great rigidity is achieved transversely to it. Unevenness in the floor does not lead to a punctiform deformation of the sole, but to a wave-shaped deformation, which reduces stress peaks on the sole of the foot because of the larger contact surface between the sole and the foot.
  • the sandwich-like structure allows the production of relatively thin soles that would not be very flexible in the vertical direction.
  • At least one cavity is provided in at least one of the coatings.
  • the wall of this cavity can resiliently nestle against the contour of the sole of the foot, as a result of which the force-transmitting area is considerably enlarged.
  • the cavity acts as cushioning, because when the heel is kicked or the ball is pushed off, the cavity yields compressibly, which counteracts pressure peaks on the sole of the foot.
  • the comfort with regard to the bedding of the foot on the shoe sole can be improved if several chambers are formed in the coating. This effectively counteracts local deflection, which could occur in a single chamber.
  • the flexibility of the chamber can be significantly improved if adjacent chambers have walls that are separate from one another. These walls are preferably somewhat oblique so that they can be bent more easily when the chamber is compressed. In the case of vertical walls, the necessary pressure would only increase until the side wall buckled, which is useful if a clear massage effect is desired at the same time.
  • the top view of the chambers preferably has a rounded floor plan and consequently also rounded contact points with the sole of the foot, in order to avoid unnecessarily irritating corners and edges which could lead to chafing points.
  • a particularly large spring stroke of the chamber or chambers can be achieved if they sit directly on the core and there is no additional wall between the core and the chamber. Otherwise, the sole would be stronger around this additional wall with the same walking comfort, which increases the weight and the material used.
  • the side wall is preferably an outer surface of a truncated cone, so that the side wall can be easily deformed when the chamber is subjected to pressure.
  • the chambers can also have a hemispherical outer contour if an intensified massage effect is desired.
  • a particularly dense packing of the individual chambers can be achieved if they have a rectangular or hexagonal layout. If the chambers are packed tightly, the corners that occur then are irrelevant because the gaps are so small that an insole that may be above them, together with the other footwear, can practically not be pressed into the gaps between adjacent chambers.
  • the shoe sole need not be provided with chambers over its entire effective area. It is sufficient if the chambers are arranged in individual, separate areas. Chambers are advantageously present at least in the heel area. Additional chambers can also be present in the area of the bale. In contrast, the area of the shoe joint can be designed without such chambers. It is only provided with a coating that does not reach the level of the relaxed chambers in order to provide a certain amount of support in the area of the shoe joint.
  • a coating can also be provided on the other side of the core, which contains air chambers.
  • the areas with air chambers on the top and on the bottom of the shoe sole are then preferably substantially congruent.
  • wedges of the core can also remain free of a coating, preferably in those places that are distant from those areas in which Chambers are arranged.
  • Rubber such as natural or synthetic rubber, or rubber substitutes, such as polyurethane or thermoplastic elastomers, etc., can be used as the material for the coating and thus also for the walls of the chambers.
  • the core can consist of a sheet metal plate which is formed over the entire length of the core with shafts extending transversely to the longitudinal axis of the shoe unit. These waves can be rounded or, viewed in cross section of the core, they can form a zigzag line. Steel or light metal with sufficient strength can be used as the material for the core.
  • the core is extrusion-coated on the side in order to counteract signs of corrosion.
  • a complete embedding of the core effectively prevents any signs of corrosion.
  • the anisotropic flexibility of the shoe sole can also be achieved with a core made of composite material, for example by means of a plate-shaped core made of synthetic resin, embedded in the fibers, which are essentially perpendicular to the longitudinal axis of the Shoe unit run.
  • the shoe sole can have the size of the insole of the relevant shoe unit or can be smaller or correspond to a partial area of the insole.
  • it can be a half sole or it only extends to the heel of the respective shoe unit.
  • the coating of the core does not result in an edge lying at the same height anyway, which can be used as a connecting surface with the lasting edge of the shoe upper, such an edge can be applied to the core in particular.
  • shoe sole 1 shows a shoe sole 1 in a plan view of its upper side 2, the edge 3 of which roughly follows the shape of the foot or the outer contour of an insole which is present in the shoe unit on which the shoe sole 1 shown is to be used. Since the shoe sole 1 is a full sole, it has a tip region 4, a ball region 5, a joint region 6 and a heel or heel seat region 7.
  • the sole of the shoe 1 is constructed in a sandwich-like manner and contains a plate-shaped or sheet-like core 8, the outer contour 9 of which, as the dashed line in FIG. 1 shows, springs back slightly in relation to the outer edge 3, but otherwise in relation to this runs at a constant distance.
  • the core 8 consists of an approximately 0.3 mm thick steel sheet which is corrugated in a zigzag shape. This creates a multitude of waves 11 with wave crests 12 and wave troughs 13. The wave crests 12 and wave troughs 13 run parallel to one another and are distributed equidistantly with respect to the longitudinal axis of the shoe sole 1.
  • the wave crests 12 or wave troughs 13 lie orthogonal to the longitudinal axis of the shoe sole 1, whereby the shoe sole 1 is pliable with respect to an axis of curvature that is parallel to the wave crests 12 or the wave troughs 13, while with respect to a curve axis that is perpendicular to the wave crests 12 or wave valleys 13 and thus extends parallel to the longitudinal axis of the shoe sole 1, is relatively stiff.
  • the core 8 is approximately flat.
  • the core 8 is provided both on its upper side and on its lower side with a coating 14 or 15 which is integrally connected to the core 8.
  • Both coatings 14, 15 consist of a suitable elastic material, for example natural rubber, synthetic rubber or rubber substitutes, such as polyurethane or thermoplastic elastomers or similar plastics.
  • the side of the coating 14 pointing away from the core 8 forms the upper side 2, while a side 16 of the coating 15 pointing away from the core 8 represents the underside of the shoe sole 1.
  • the underside can be provided with a further profiled and abrasion-resistant outsole, or the coating 15 itself forms the running side of the sole 1 and is correspondingly profiled and wear-resistant. Both the top 2 and the bottom 16 are essentially flat.
  • an approximately parallelogram-shaped depression 17 and 18 is contained in the upper coating 15, which extends practically down to the top of the core 8.
  • the coating 14 is dissolved into a plurality of truncated cones 19 which are separate from one another.
  • the lower coating 15 also has such a recessed area 21, which extends as far as the core 8 and which is approximately congruent with the area 18. Also in the area 21, the coating 15 is dissolved into a large number of frusto-conical knobs 19 of the same size. All knobs 19 of all areas 17, 18 and 21 have the same shape. Its structure is shown in FIG. 3, which shows the area of the shoe sole 1 contained in the dashed circle A in an enlarged perspective view.
  • each of the knobs 19 contains a cavity 22 which is delimited on one side by the core 8.
  • the knobs 19 each sit on the core 8 centrally above a wave trough 13 and are delimited on the edge by a side wall 23, the course of which corresponds to the surface of a truncated cone.
  • the side wall 23 of each knob 19 merges in one piece into a flat roof 24, the upper side of which is flush with the upper side 2 or underside 16 of the coating 14 or 15 or is slightly above it.
  • the roof 24 and the side wall 23 have the same wall thickness of approximately 0.8 mm.
  • the angle of inclination of the side wall 23 with respect to the plane defined by the shoe sole 1 is expediently somewhat flatter than shown in the figures for reasons of clarity.
  • the height of the knob 19, measured over everything, above the trough 13 is approximately 2.5 mm and the diameter of the roof 24 on the outside of the knob 19 is approximately 5 mm, while the diameter in the region of the trough 13 is approximately 10 mm long.
  • the frustoconical shape of the knobs 19 creates free spaces between the knobs 19, which improves the elasticity in the area of the knobs 19 and also leads to more favorable ventilation of the sole of the foot in the heel and ball area 5, 7.
  • the arrangement of the knobs 19 on the core 8 is such that the knobs 19 abut each other with their larger end facing the core 8 and, moreover, their diameter is matched to the wave shape of the core 8 in such a way that they each lie between two adjacent shaft crests 12 Find space.
  • the knobs 19 in adjacent rows are practically not in a gap, but in each case about four immediately adjacent knobs 19 lie on the corner points of a square or a rhombus which has almost right-angled corner angles. There is only a slight deviation from the right angle corresponding to the edge of the recess 17 or 18 or 21.
  • the distance between the knobs 19 can be increased at any time so that they do not directly adjoin one another in the base region in the trough 13.
  • the knobs 19 can also have a hemisphere shape with an approximately circular plan, or their plan can, in contrast to the circular form, in the longitudinal direction of the trough 13 be oval, with a flattened or rounded surface being considered in the same way.
  • the chambers 22 have a correspondingly similar shape.
  • a particularly dense packing of the knobs 19, which always contain chambers 22, can be achieved if the knobs 19 have an angular plan.
  • the floor plan means the penetration surface that arises when the knobs 19 are on a flat surface because the waveform changes the visible edge in a complicated way anyway.
  • the chambers 22 are filled with gas, for example air or an inert gas, for example nitrogen, or they can also contain a viscous liquid with a gel-like consistency.
  • gas for example air or an inert gas, for example nitrogen
  • the elasticity arises due to the flexibility of the side wall 23 or the roof 24 and the compressibility of the gas contained, while in the case of filling the chambers 22 with a gel, the flexibility only arises due to the flexibility of the side wall 23 and the roof 24.
  • the sole 1 shown is, as mentioned, a full sole. However, advantages are achieved if the sole 1 is a half sole, i.e. if, starting from the tip region 4, it only extends to a broken line 25. Other lengths of the sole are also possible, for example if it extends up to a line 26, so that the heel area 7 is missing. In certain applications it can also be expedient to provide the knobs 19 exclusively in the heel area 7 and to let the coating 14 run smoothly in the ball area 5.
  • the advantageous anisotropic elastic properties of the shoe sole 1 can be achieved not only with a corrugated sheet as the core 8, which is made of steel or light metal, but also with a corresponding molded plastic part or with a core 8, which is approximately a plane-parallel plate, if inside of the core 8 structural elements are provided which lead to anisotropic bending properties.
  • Expedient are essentially the same directional fibers, which lie transversely to the longitudinal axis of the sole, and thus have little influence on the flexibility of the sole 1 in the running direction, while the flexibility is impeded transversely by the fibers, so that greater rigidity is achieved.
  • a set of essentially parallel bars can also be used for the core 8, which are either molded by themselves or which are embedded with the aid of the two coatings 14 and 15 and held in place. These bars would then lie transversely or at right angles to the longitudinal axis of the shoe sole 1.
  • knobs 19 are each integrally connected to the top of the core 8, for example by vulcanization, knobs 19 can also be used, each of which has its own base, so that even without the core 8, each knob 19 has one closed chamber 22 results.
  • the knobs 19 can be attached to the core 8 with this base.
  • Another variant is that all bottoms of all knobs 19 are integrally or integrally connected. There is then, as it were, an intermediate or insert between the knobs 19 and the core 8, which in certain embodiments means a simpler manufacture for the core.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP93101028A 1992-01-27 1993-01-23 Semelle de chaussure Expired - Lifetime EP0553736B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4202170A DE4202170A1 (de) 1992-01-27 1992-01-27 Schuhsohle
DE4202170 1992-01-27

Publications (2)

Publication Number Publication Date
EP0553736A1 true EP0553736A1 (fr) 1993-08-04
EP0553736B1 EP0553736B1 (fr) 1997-06-04

Family

ID=6450338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93101028A Expired - Lifetime EP0553736B1 (fr) 1992-01-27 1993-01-23 Semelle de chaussure

Country Status (3)

Country Link
EP (1) EP0553736B1 (fr)
DE (2) DE4202170A1 (fr)
ES (1) ES2103985T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999020135A1 (fr) * 1997-10-16 1999-04-29 Technostar Co., Ltd. Chaussure a absorption optimale des chocs de reception au sol
EP1568289A1 (fr) * 2004-02-25 2005-08-31 Abeba Spezialschuh-Ausstatter GmbH Semelle intérieure de chaussure
WO2019144168A1 (fr) 2018-01-25 2019-08-01 Adomus Gmbh Élément de semelle ayant des rigidités en flexion définies
USD882926S1 (en) 2017-12-20 2020-05-05 Crocs, Inc. Footbed
USD909027S1 (en) 2018-07-12 2021-02-02 Crocs, Inc. Footwear

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2638816T3 (en) * 2010-11-08 2017-09-18 Desarrollo Integral Del Molde Sl HOLE SHOE SOLE AND PROCEDURE FOR MANUFACTURING THEREOF

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029194A (en) * 1978-09-04 1980-03-19 Funck H Sole unit for protective footwear
DE8418324U1 (de) * 1984-06-16 1984-09-13 Hanrath, Josef Schuh
US4561195A (en) * 1982-12-28 1985-12-31 Mizuno Corporation Midsole assembly for an athletic shoe
EP0373330A1 (fr) * 1988-12-13 1990-06-20 Helmut Mayer Pièce d'insertion pour chaussure
EP0387505A1 (fr) * 1989-02-03 1990-09-19 PUMA Aktiengesellschaft Rudolf Dassler Sport Chaussure, notamment chaussure de sport ou chaussure de rééducation
US4999931A (en) * 1988-02-24 1991-03-19 Vermeulen Jean Pierre Shock absorbing system for footwear application

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029194A (en) * 1978-09-04 1980-03-19 Funck H Sole unit for protective footwear
US4561195A (en) * 1982-12-28 1985-12-31 Mizuno Corporation Midsole assembly for an athletic shoe
DE8418324U1 (de) * 1984-06-16 1984-09-13 Hanrath, Josef Schuh
US4999931A (en) * 1988-02-24 1991-03-19 Vermeulen Jean Pierre Shock absorbing system for footwear application
EP0373330A1 (fr) * 1988-12-13 1990-06-20 Helmut Mayer Pièce d'insertion pour chaussure
EP0387505A1 (fr) * 1989-02-03 1990-09-19 PUMA Aktiengesellschaft Rudolf Dassler Sport Chaussure, notamment chaussure de sport ou chaussure de rééducation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MACHINE DESIGN Bd. 63, Nr. 11, 6. Juni 1991, CLEVELAND, OHIO, USA Seiten 80 - 84 J. BRAHAM 'HIGH TECH AFOOT' *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999020135A1 (fr) * 1997-10-16 1999-04-29 Technostar Co., Ltd. Chaussure a absorption optimale des chocs de reception au sol
EP1568289A1 (fr) * 2004-02-25 2005-08-31 Abeba Spezialschuh-Ausstatter GmbH Semelle intérieure de chaussure
USD882926S1 (en) 2017-12-20 2020-05-05 Crocs, Inc. Footbed
WO2019144168A1 (fr) 2018-01-25 2019-08-01 Adomus Gmbh Élément de semelle ayant des rigidités en flexion définies
USD909027S1 (en) 2018-07-12 2021-02-02 Crocs, Inc. Footwear

Also Published As

Publication number Publication date
DE59306620D1 (de) 1997-07-10
DE4202170A1 (de) 1993-07-29
EP0553736B1 (fr) 1997-06-04
ES2103985T3 (es) 1997-10-01

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