EP2591691A1 - Sportschuh, insbesondere Skischuh, oder dergleichen - Google Patents

Sportschuh, insbesondere Skischuh, oder dergleichen Download PDF

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Publication number
EP2591691A1
EP2591691A1 EP12192531.7A EP12192531A EP2591691A1 EP 2591691 A1 EP2591691 A1 EP 2591691A1 EP 12192531 A EP12192531 A EP 12192531A EP 2591691 A1 EP2591691 A1 EP 2591691A1
Authority
EP
European Patent Office
Prior art keywords
casing
reinforcement element
sports footwear
hereinbefore
sole
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Withdrawn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
EP12192531.7A
Other languages
English (en)
French (fr)
Inventor
Carletto Battilana
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.)
Calzaturificio dal Bello SRL
Dal Bello Sport SRL
Original Assignee
Calzaturificio dal Bello SRL
Dal Bello Sport SRL
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 Calzaturificio dal Bello SRL, Dal Bello Sport SRL filed Critical Calzaturificio dal Bello SRL
Publication of EP2591691A1 publication Critical patent/EP2591691A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0427—Ski or like boots characterised by type or construction details
    • A43B5/0482—Ski or like boots characterised by type or construction details made from materials with different rigidities
    • 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

Definitions

  • the present invention concerns a sports footwear, such as for example a ski boot, a snowboard boot or suchlike, having a sole with a reduced thickness, so that the sole of the foot of the person wearing it is as close as possible to the sports equipment underneath, so as to lower the overall barycenter.
  • a sports footwear such as for example a ski boot, a snowboard boot or suchlike, having a sole with a reduced thickness, so that the sole of the foot of the person wearing it is as close as possible to the sports equipment underneath, so as to lower the overall barycenter.
  • Sports footwear are known, such as ski boots, which comprise a substantially impermeable structure, commonly known as casing, made of polyurethane.
  • the sole of the boot is made in a single piece with the casing and is relatively thick so as to guarantee adequate resistance to mechanical stresses, such as pressures, torsions and/or flexions, when it is coupled by the bindings to the sports equipment underneath, for example to the skis or snowboard.
  • Purpose of the present invention is to obtain a sports footwear, such as a ski boot or suchlike, which is as light as possible, while still maintaining the mechanical characteristics and the properties of thermal and hydraulic seal that are proper for this type of footwear, and which has a sole with a limited thickness, to allow the sole of the foot of the person wearing it to be brought as close as possible to the sports equipment underneath, in order to lower the overall barycenter and thus allow him/her to obtain a better sporting performance.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • the casing and the sole are assembled together so as to render the compartment watertight, at least at the bottom part.
  • the sole is provided with at least a reinforcement element made in a single piece and comprising a first base part, substantially flat, from the opposite sides of which two lateral walls extend, wherein each of the lateral walls comprises a front fin, disposed substantially in proximity to a toe of the casing and a rear fin, disposed substantially in a malleolar zone of the casing.
  • the reinforcement element is made of a different material from that which the casing is made of, and having a greater mechanical resistance and a lower specific weight than the plastic material.
  • the reinforcement element is made of composite material with a resin and fiber base, such as for example carbon fibers, glass or aramid fibers, or other fibers, both natural and synthetic.
  • the resin is a thermosetting resin, in particular epoxy resin.
  • the fibers comprise one or more types of fibers selected from a group consisting of carbon fibers, glass or aramid fibers.
  • the material of the reinforcement element is therefore light and very resistant to mechanical stresses, and thus it allows to have a sole with an overall thickness that is much less than in the state of the art.
  • the reinforcement element is disposed longitudinally at least along the part of the sole comprised between the toe and the heel, and is attached to the lower part of the casing.
  • the shape of the reinforcement element is substantially mating with that of the lower part of the casing.
  • the reinforcement element comprises a first substantially flat part and two lateral walls which extend from opposite sides of the first part, along the flanks of the casing.
  • the thickness of the sole is limited to a few millimeters and the overall weight of the boot is less than that of a traditional boot.
  • the reinforcement element is a solid piece, without any through holes.
  • the reinforcement element is substantially shaped like a cradle.
  • the reinforcement element along its longitudinal extension the reinforcement element has a substantially U-shaped cross section.
  • the front fin is connected in continuity to the rear fin by means of an intermediate segment, substantially U-shaped and lowered with respect to the front fin and the rear fin.
  • the reinforcement element is attached to the casing by gluing.
  • the reinforcement element is attached to the casing by means of mechanical components.
  • the reinforcement element is attached to the casing by the direct injection of the material that constitutes the casing on the reinforcement element.
  • the reinforcement element is attached to the casing obtaining the reinforcement element directly on the lower part of the casing.
  • the casing is made of polyurethane or a polymer material comprising polyurethane.
  • the present invention also concerns a method to obtain a sports footwear as described above, which provides to make available at least a reinforcement element to be associated to the sole.
  • the reinforcement element is made in a single piece and comprises a first, substantially flat base part, from the opposite sides of which two lateral walls extend, wherein each of the lateral walls comprises a front fin, disposed substantially in proximity to a toe of the casing and a rear fin, disposed substantially in a malleolar zone of the casing.
  • the reinforcement element is made of a different material from that which the casing is made of, and having a greater mechanical resistance and a lower specific weight than the plastic material.
  • the reinforcement element is attached to the casing of the sports footwear by gluing, or by means of mechanical components, or by the direct injection of the material that constitutes the casing on the reinforcement element, or by obtaining the reinforcement element directly on the lower part of the casing.
  • a sports footwear or boot 10 which in this case is a ski boot, comprises a casing 11, made by molding plastic material, for example polyurethane, and a sole 13 disposed under the casing 11.
  • the casing 11 comprises a toe 14 at the front, a heel 16 at the rear, an upper part or instep 15, and a body 17 or outsole which are shaped so as to define an internal compartment 18 suitable to house the user's foot.
  • the sole 13 comprises a reinforcement element 21 ( figs. 2 to 4 ), made of resin-based composite material such as thermosetting resin, for example epoxy resin, and of fibers, such as for example carbon fibers, glass or aramid fibers or suchlike, and is suitable to increase both the rigidity and the mechanical resistance of the lower part of the boot 10.
  • resin-based composite material such as thermosetting resin, for example epoxy resin
  • fibers such as for example carbon fibers, glass or aramid fibers or suchlike
  • a composite material used to obtain the reinforcement element 21 can be made with a thermosetting matrix, obtained by impregnating a fabric formed by fibers with liquid thermosetting resins, or by means of hot molding, usually in an autoclave or in a high-pressure mold.
  • a pre-preg formed by reinforcement fibers incorporated in a thermosetting matrix is put into the autoclave or high-pressure mold, where the effects of temperature and pressure determine the desired final structure of the composite material.
  • the reinforcement element 21 is substantially mating in shape with that of the lower part of the body 17 of the casing 11, and has a substantially U-shaped cross section ( fig. 4 ).
  • the reinforcement element 21 is shaped like a cradle.
  • the reinforcement element 21 is a single piece, which comprises a lower part or first base part 23 ( fig. 2 ), substantially flat, and two lateral walls 25 which extend from opposite sides toward the casing 11.
  • Each lateral wall 25 comprises a front fin 26, disposed substantially in proximity to the toe 14, and a rear fin 27 ( figs 1 and 2 ), which affects a malleolar zone 29 of the casing 11, near the heel 16.
  • malleolar zone 29 we mean the zone of the casing 11 which clothes or covers each of the two bone protuberances at the neck of the foot at the two sides of the ankle.
  • the two lateral walls 25 can have laterally a rounded or convex protuberance 25a, which can function as a lateral stiffening of the reinforcement element 21 ( fig 3 ).
  • the front fin 26 and the rear fin 27 can be less thick than the lateral wall 25, to enable the flush coupling with a mating step-shaped end of the casing 11 ( fig. 3 ).
  • the front fin 26 is lower than the rear fin 27.
  • the rear fin 27 has a rotatable coupling element 27b for pivoting a mobile part of the boot 10 ( fig. 2 ).
  • the reinforcement element 21 is a solid piece, without through holes.
  • the reinforcement element is disposed longitudinally at least along the part of the sole comprised between the toe 14 and the heel 16 of the casing 11, and is attached to the lower part of the casing 11.
  • the reinforcement element 21 develops in continuity, without substantive interruptions, from the toe 14 to the heel 16, occupying the whole zone comprised between toe 14 and heel 16, thus affecting most of the longitudinal development of the sole 13 and the casing 11, and therefore most of the sole of the foot of the user wearing the sports footwear 10.
  • the reinforcement element 21 is an external part of the sole 13 of the boot 10, and not included inside it, and is therefore in contact with the environment outside the boot 10 and can also be in direct contact with the ground or the sports equipment to which the boot 10 is attached.
  • the reinforcement element 21 is attached to the casing 11 by gluing.
  • any mechanical mean may be used, such as screws, rivets or other, although the watertight seal must be guaranteed, to prevent water or damp from entering into the compartment 18 through the joining zone between the casing 11 and the sole 13.
  • the casing 11 may be made by injection of plastic material, for example polyurethane, directly onto the reinforcement element 21, and vice versa, the reinforcement element 21 may be made directly on the lower part of the casing 11.
  • the sole 13 inside the compartment 18 of the casing 11 optionally also comprises an insole 33 ( fig. 2 ), made of light material, for example cork, expanded polyurethane or other, sufficiently resistant and with heat insulation characteristics, and which for example extends substantially from the toe 14 to the heel 16 and can be a few millimeters thick.
  • the insole 33 is disposed adjacent on the lower part 23 of the reinforcement element 21.
  • the insole 33 is made of expanded polyurethane and is made by injection on the reinforcement element 21, so that it adheres to it in the best possible way.
  • the boot 10 also comprises a plurality of anti-slip studs 35, a front insert 37 and a rear insert 39 which are attached by means of gluing or any mechanical mean, such as screws, rivets or other.
  • the two inserts 37 and 39 are made of plastic material suitable to guarantee a suitable grip of the attachments of the skis, for example polyurethane, polyethylene or polypropylene.
  • the front insert 37 and the rear insert 39 occupy the front and rear space under the casing 11 not affected in length by the reinforcement element 21, substantially completing the base structure of the sole 13 as can be seen in fig. 3 .
  • the reinforcement element 21 may have a raised front part 21a, overlapping and in contact with at least a part of the front insert 37, as can be seen for example in fig. 3 .
  • the reinforcement element 21 may have an at least partly stepped or knurled surface 21b, for example with the function of increasing friction or grip or in any case anti-slip properties.
  • the boot 10 as described heretofore has great rigidity in the lower part, which is the part that goes into contact with the skis or other sports equipment and is subjected to considerable mechanical stresses.
  • the boot 10 is lighter than similar known boots made completely of polyurethane, and the sole 13 is much thinner while still guaranteeing adequate heat insulation.
  • the rear part of the sole 13, comprising the thickness of the insole 33 and the rear insert 39 has an overall thickness comprised between 27 mm and 29 mm.
  • the front part of the sole 13, comprising the insole 33 and the front insert 37, has a thickness comprised between 16 mm and 18 mm.
  • the rear insert 39 has a thickness comprised between 17 mm and 21 mm, by way of example 19 mm, while the insole 33 can have a maximum thickness near the heel 16 of about 10 mm.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP12192531.7A 2011-11-14 2012-11-14 Sportschuh, insbesondere Skischuh, oder dergleichen Withdrawn EP2591691A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000183A ITUD20110183A1 (it) 2011-11-14 2011-11-14 Calzatura sportiva quale uno scarpone da sci, o simile

Publications (1)

Publication Number Publication Date
EP2591691A1 true EP2591691A1 (de) 2013-05-15

Family

ID=45094164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12192531.7A Withdrawn EP2591691A1 (de) 2011-11-14 2012-11-14 Sportschuh, insbesondere Skischuh, oder dergleichen

Country Status (2)

Country Link
EP (1) EP2591691A1 (de)
IT (1) ITUD20110183A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253251A (en) * 1976-06-11 1981-03-03 Etablissements Francois Salomon Et Fils Method for manufacturing a ski boot
DE3325019A1 (de) 1983-07-11 1983-11-10 Horst 6384 Schmitten Siegemund Sohle fuer einen sportschuh
US5363571A (en) * 1990-01-31 1994-11-15 Salomon S.A. Ski boot closing cover with tightening device
WO1995027416A1 (en) 1994-04-12 1995-10-19 Nordica S.P.A. Reinforced sole, particularly for sports shoes
FR2743990A1 (fr) 1996-01-30 1997-08-01 Salomon Sa Chaussure avec raidisseur de torsion
EP0931468A1 (de) * 1998-01-23 1999-07-28 Alessandro Marcolin Schale für einen Sportschuh
US5974696A (en) 1997-01-24 1999-11-02 Sport Maska Inc. Skate boot having an outsole with a rigid insert

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253251A (en) * 1976-06-11 1981-03-03 Etablissements Francois Salomon Et Fils Method for manufacturing a ski boot
DE3325019A1 (de) 1983-07-11 1983-11-10 Horst 6384 Schmitten Siegemund Sohle fuer einen sportschuh
US5363571A (en) * 1990-01-31 1994-11-15 Salomon S.A. Ski boot closing cover with tightening device
WO1995027416A1 (en) 1994-04-12 1995-10-19 Nordica S.P.A. Reinforced sole, particularly for sports shoes
FR2743990A1 (fr) 1996-01-30 1997-08-01 Salomon Sa Chaussure avec raidisseur de torsion
US5974696A (en) 1997-01-24 1999-11-02 Sport Maska Inc. Skate boot having an outsole with a rigid insert
EP0931468A1 (de) * 1998-01-23 1999-07-28 Alessandro Marcolin Schale für einen Sportschuh

Also Published As

Publication number Publication date
ITUD20110183A1 (it) 2013-05-15

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