EP1872678A2 - Schuh mit starrer Schale - Google Patents

Schuh mit starrer Schale Download PDF

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Publication number
EP1872678A2
EP1872678A2 EP07011024A EP07011024A EP1872678A2 EP 1872678 A2 EP1872678 A2 EP 1872678A2 EP 07011024 A EP07011024 A EP 07011024A EP 07011024 A EP07011024 A EP 07011024A EP 1872678 A2 EP1872678 A2 EP 1872678A2
Authority
EP
European Patent Office
Prior art keywords
shell
shoe
additive
insert
shoe according
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
EP07011024A
Other languages
English (en)
French (fr)
Other versions
EP1872678B1 (de
EP1872678A3 (de
Inventor
Christian Challande
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.)
Salomon SAS
Original Assignee
Salomon SAS
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 Salomon SAS filed Critical Salomon SAS
Publication of EP1872678A2 publication Critical patent/EP1872678A2/de
Publication of EP1872678A3 publication Critical patent/EP1872678A3/de
Application granted granted Critical
Publication of EP1872678B1 publication Critical patent/EP1872678B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D95/00—Shoe-finishing machines
    • A43D95/10—Drying or heating devices for shoes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/26—Footwear characterised by the shape or the use adjustable as to length or size
    • 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
    • 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
    • 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
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D3/00—Lasts
    • A43D3/14—Stretching or spreading lasts; Boot-trees; Fillers; Devices for maintaining the shape of the shoe
    • A43D3/1408—Devices for heating or drying shoes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L23/00—Cleaning footwear
    • A47L23/20—Devices or implements for drying footwear, also with heating arrangements
    • A47L23/205—Devices or implements for drying footwear, also with heating arrangements with heating arrangements

Definitions

  • the invention relates to a shoe comprising a rigid shell.
  • the invention relates to a shoe for the practice of sliding, for example skiing. It may also relate to other types of shoes having a rigid shell such as walking shoes, or shoes whose part of the rod is a rigid element (buttress, collar, etc. ..). It also relates to a pair of shoes and a heating machine for shaping the one or more shoes.
  • a shoe for the practice of skiing comprises a rigid shell which is made of plastic material and a comfort inner boot which is formed mainly by a foam.
  • the shell is composed of a shell bottom that wraps the foot, and a rod that goes up along the user's ankle.
  • the hull with its rigidity properties transmits the forces between the foot and the gliding board.
  • the liner envelops the foot of the user, it ensures the comfort of the foot inside the hull. It also transmits to the different zones of the foot or ankle the stresses to which the hull is subjected.
  • the hull and the bootie In order to ensure good transmission of the forces between the foot and the gliding device, the hull and the bootie must conform to the shape of the skier's foot. But the feet have complex shapes that are variable from one individual to another.
  • the shell is equipped with hook mechanisms or other equivalent devices that allow to change its interior volume.
  • the patent application FR2788410 describes an embodiment of a slipper according to which yarns are cut into the wall of the slipper to reduce its thickness locally or, on the contrary, to add shims of thickness.
  • deforming a shell requires locally heating the wall at a high temperature and requires heavy equipment, hot air blower 500 ° C, including caliper and hydraulic piston, which is introduced into the shell to exert a thrust on its walls. From where a certain inaccuracy as for the localization and the amplitude of the deformation because one works on the bare hull. This is a specialist job. It can also be observed a deterioration of the external appearance of the shoe in the areas that have been heated.
  • the utility model German DE8611889 discloses a shoe some portions of which are made of a thermoplastic material. To deform the hull and adapt it to the shape of the user's foot, these portions are warmed locally above the softening point of the thermoplastic material, which is of the order of 100 ° C., that is to say very high. less than the softening temperature of the rest of the hull.
  • the goal is to press the foot against reinforced areas of the hull that bypass the sensitive areas of the foot. There is no frank deformation of the hull, and therefore no significant improvement in comfort for a foot that feels an overpressure slipper.
  • the structure of the hull becomes hybrid.
  • the less rigid portions of the hull are made of a completely different material than the rest of the hull. It is therefore necessary to strengthen the hull to compensate for the local loss of rigidity in these sensitive areas.
  • the less rigid portions are areas of weakness of the shoe that are less resistant to impact and wear.
  • the appearance of less rigid portions is different from the rest of the shell and ages differently.
  • the shoe comprises a shell or a shell element, made of a rigid plastic base material whose softening point is greater than 170 ° C.
  • the shoe is characterized in that at least in a local portion of the shell, or the shell member, the shell material contains an additive having a melting temperature of less than 100 ° C, preferably 80 ° C in a proportion of between 3 and 45%, preferably 10 to 25%.
  • the additive is a polymer based on caprolactone or caprolactane.
  • the heating machine comprises a support provided to receive at least one shoe in a longitudinal direction defined by the sole, a hot air generator integrated in the support. It is characterized in that it comprises at least two blowing nozzles oriented vis-à-vis and located on each side of said longitudinal direction.
  • Figures 1 and 2 show a shoe 10.
  • the shoe is a ski boot. It could of course be another type of shoe, snowboard shoe, walking shoe, or a shoe whose part of the stem is a rigid shell element (buttress, collar, etc.. .).
  • the shoe conventionally comprises a shell 11 and an inner comfort liner 12 provided for wrapping the foot of a user.
  • the shell comprises a shell bottom 13 surmounted by a collar 14.
  • the collar is connected to the shell bottom by a hinge 15 which is located approximately in the area of the malleoli.
  • On the top of the bottom of the hull and the front of the collar the hull has two sides that can be moved apart to widen its opening to the introduction of the foot into the shoe and can be brought closer with recovery to the closure of the shoe.
  • the liner 12 is of any suitable type.
  • it is made of foam with outer and inner shells of plastic or textile.
  • the hull is closed by a hook system which is intended to bring one another closer to the sides of the shell at the closure of the shoe.
  • a hook system which is intended to bring one another closer to the sides of the shell at the closure of the shoe.
  • Four hooks 18, 19, 20, 21 are shown in Figures 1 and 2, the first two hooks are located at the bottom of the shell, the others at the collar. The number and position of the hooks are not limiting.
  • the construction of the hull and slipper is not limiting, and the shoe could be of the rear entry type or any other type.
  • the shell 11 is made of a rigid plastic base material, for example polyurethane or polypropylene.
  • a base material is of the thermoplastic type and its softening point is relatively high, of the order of 180 ° C.
  • the bottom shell and the collar of a shell can be made of different materials.
  • At least a portion of the wall of the shell contains an additive which lowers the softening point significantly.
  • FIGS. 1 and 2 show in dotted lines hull portions with additives 24, 25a, 25b, 26a, 26b, 27a, 27b and 28. Each of these portions corresponds to a zone of the foot which is known to be sensitive.
  • the portion 24 corresponds to the heel, the portions 25a and 25b to the area of the malleolus, the portions 26a, 26b to the scaphoid zone, the portions 27a, 27b in the metatarsal width zone, and the portion 28 in the zone of the toes.
  • the number, the position and the shape of these portions with additive are not limiting.
  • the shoe could have only part of these portions or conversely have a continuous portion covering several sensitive areas of the foot.
  • One could also have a single portion comprising the entire wall of the shell bottom and / or collar.
  • caprolactone or caprolactane In each portion an additive is added to the base material of the shell to lower its softening temperature. Good results have been obtained with an additive known as caprolactone or caprolactane, and in particular with a product known under the trade name "CAPA 6500". It is a high molecular weight linear polyester derived from caprolactone monomer. Other caprolactone-based polymers may also be suitable.
  • This additive has a melting temperature in an area of 60 to 80 ° C.
  • the material of the shell in a proportion of between 3 and 45%, preferably between 10 and 25%, it lowers the softening temperature of the base material of the shell, in particular polyurethane or polypropylene, without altering the significantly the mechanical properties of the hull, in particular its rigidity, and its aesthetics in the normal conditions of use of the shoe.
  • additives may also be suitable provided that they are miscible with the base material of the shell bottom or collar during injection, they have a low melting temperature, preferably less than 100 ° C, and that their presence in the base material significantly lowers its softening temperature.
  • Figure 3 illustrates the results of tests that were performed with polyurethane as the base material.
  • the storage modulus expressed in MegaPascals which characterizes the stiffness of the material as a function of temperature, is plotted on the ordinate.
  • Curve 31 corresponds to the additive alone. We can see that the The stiffness of the material collapses to 70 ° C, which means that the material melts at this temperature.
  • Curves 32, 33 and 34 respectively correspond to polyurethane without additive, polyurethane with 10% additive, and polyurethane with 25% additive.
  • the three curves have an almost common start, which means that at ambient temperature the three materials have substantially the same rigidity.
  • the presence of the additive generates around 70 ° C a decrease in rigidity, up to a plateau that is maintained for a few tens of degrees. At this level, the material has softened sufficiently to be able to deform by creep under the effect of relatively low thrust forces.
  • the elevation of the temperature of the hull up to the temperature of 70 ° C can be supported by the foot of a user, with some precautions, taking into account in particular the insulating effect produced by the liner.
  • the material of the shell is able to deform under the effect of the thrust printed by a foot that would be present inside the shoe.
  • the hull thus deforms itself to give volume in an area where the foot would be too tight. Conversely, it can also deform the hull from the outside and shape it to bring it closer to the foot in an area where the foot is not tight enough.
  • the softening temperature of the portions with additive is much lower than that of the rest of the shoe.
  • heating portions with additives can be achieved without it having any impact on the rest of the hull.
  • the material After this deformation phase, the material regains its original rigidity with the cooling of the portions with additive. As has already been said, this rigidity is of the same order of magnitude as that of the base material of the shell portion to which the insert is assembled. Thus, the presence of the additive does not significantly affect the mechanical properties of the shell.
  • the presence of the additive in the portions does not significantly alter the aesthetics of the material in the normal conditions of use of the shoe.
  • the heating and the deformation of the portions do not change the aesthetic aspect of the material either.
  • the hull retains its original aesthetic appearance.
  • heating the inserts of the shell is an operation that can be repeated given the thermoplastic nature of the material.
  • Figures 4 to 7 show partial views of a shell bottom section at an insert that forms a portion with additive.
  • the insert 36 is through. It is assembled to the rest of the shell at its periphery, for example as shown, the insert is housed at an opening 37 of the shell bottom.
  • the insert has a peripheral recess 81 which forms a peripheral rim of smaller thickness.
  • the opening has a peripheral recess 82 and a rim.
  • Each of the recesses is provided to receive the rim of the other room.
  • the assembly is carried out by any appropriate means.
  • the insert is made by overmolding or by a bi-injection technique. In this case, the assembly is carried out with the injection of the insert.
  • the assembly of the insert 38 to the remainder of the shell is made using rivets 39.
  • the insert 40 is non-through.
  • the wall of the shell has a recess 41 in which the insert is housed.
  • the insert is assembled in the recess during its production, by counter-molding or with a bi-injection technique. It can also be attached and assembled by gluing, welding or any other means.
  • the residual thickness of the wall of the shell is small enough to follow the deformation of the insert by elasticity.
  • the wall that forms the bottom of the recess could be discontinuous, for example in the manner of meshes of a net.
  • the outer wall of the insert 42 has a surface relief on all or part of its surface. Any suitable relief is suitable, a geometrically shaped relief of squares or lozenges, or portions of sphere, recessed or protruding.
  • the insert is made of the same basic material as the rest of the shell or a material that has the same rigidity in the conditions of use of the shoe.
  • Figures 8, 9 and 10 show constructions of heating machines.
  • the machine 45 shown in FIG. 8 is a simple machine provided for a shoe that has inserts in the zones 27a and 27b identified in FIGS. 1 and 2.
  • the machine 45 comprises a support 46 with two corridors 47 and 48 defined by borders 49, 50, 51.
  • the length and width of the corridors are equal to or greater than the length and width of a large shoe for each corridors can receive a shoe of a pair, regardless of its size in the longitudinal direction which is defined by the sole of the shoe.
  • the support 46 contains a hot air generator.
  • This generator is of a known type, it comprises a source of hot air, for example a heating resistor, and a ventilation.
  • an external hot air generator which is connected to the support.
  • the borders of the corridors have nozzles which are located two by two on each side of the longitudinal direction defined by the shoe sole and opening opposite vis-à-vis the interior of the corridor. Only the nozzles 52 and 53 are visible in FIG. nozzles are connected to the furnace, for example by means of ducts which are housed in the curbs.
  • the nozzles are provided to diffuse towards the shoe hot air from the generator.
  • the position of the stop is established according to the size of the shoe so that the portions to be deformed are well opposite a nozzle.
  • the temperature of the air which is diffused by the nozzles is sufficient so that the wall of the hull reaches its softening temperature after a few minutes.
  • the air temperature is 120 ° C +/- 10 ° C. This temperature is higher than the softening temperature of the inserts, but it remains lower than the softening temperature of the rest of the shell.
  • the heating of the portions does not affect the rest of the hull.
  • the temperature of the air could be lower, if we accept that the heating time is more important.
  • the procedure is as follows.
  • the shoes are placed on the support, the hot air is diffused by the nozzles during about ten minutes.
  • the user introduces his feet into the shoes.
  • the wall of the hull then deforms itself under the pressure it receives from the foot.
  • the hull is then allowed to cool to its original rigidity. Given that the softening temperature is relatively low, the skier can also introduce the feet in the shoes from the beginning of heating.
  • nozzles next to other portions with additive of the shoe.
  • Figures 9 and 10 relate to another method of construction of a heating machine.
  • This machine is also intended to ensure the shaping of the liner, as described in the patent application FR2739760 quoted in the preamble.
  • the machine has a support 76 which is provided to receive the two shoes 77 and 78 of a pair in an inverted position, the shoe soles being oriented parallel.
  • a hot air generator is located in the support 76, or is connected thereto.
  • Conduits 59 and 60 channel hot air into the boot liner.
  • a pipe 62 channels the hot air to nozzles 64, 65, 66 and 67 which are situated in pairs on each side of the longitudinal direction defined by the shoe sole, and which open opposite level of the zones 27a and 27b of the shoes.
  • the nozzles are located at the ends of the branches of a manifold 70 which is connected to the pipe 62.
  • the manifold 70 is connected to the pipe 62 by a hinge, and it is operated by a lever 71 which allows to position the nozzles according to the shoe size.
  • the branches of the manifold can be telescopic to adjust the position of the nozzles precisely.
  • the heating machine has a similar operation as previously described.
  • the hot air is sent inside the liner and towards the outer wall of the shoe shell. After about ten minutes, the shoes are removed from the support, and the user introduces the feet in the slippers. Simultaneously, the inner volume of the liner and the volume of the shell adapt to the feet of the user.
  • infrared resistors can be used to heat the inserts of the shell from the outside. Also we can drown resistors in the inserts or bring them back by screen printing. It is also possible to heat the inserts by induction on a metal mesh which is present in the insert. Other techniques can be used, a halogen lamp, a heated silicone pad, hot water, steam.
  • the invention is not limited to the field of ski boots, it also applies to all shoes that have an outer shell of plastic and any shoe whose stem comprises a rigid shell element, such as buttress or necklace.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP07011024.2A 2006-06-28 2007-06-05 Schuh mit starrer Schale Active EP1872678B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0605825A FR2902981B1 (fr) 2006-06-28 2006-06-28 Chaussure a coque rigide

Publications (3)

Publication Number Publication Date
EP1872678A2 true EP1872678A2 (de) 2008-01-02
EP1872678A3 EP1872678A3 (de) 2008-01-23
EP1872678B1 EP1872678B1 (de) 2015-07-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07011024.2A Active EP1872678B1 (de) 2006-06-28 2007-06-05 Schuh mit starrer Schale

Country Status (3)

Country Link
US (1) US8893407B2 (de)
EP (1) EP1872678B1 (de)
FR (1) FR2902981B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009046477A3 (de) * 2007-10-12 2009-07-02 Fischer Sports Gmbh Verfahren zur herstellung von schuhen, leisten hierfür und schuh
WO2014015354A1 (de) * 2012-07-24 2014-01-30 Fischer Sports Gmbh Vorrichtung und verfahren zum anpassen eines skischuhs
IT201900005732A1 (it) * 2019-04-12 2020-10-12 Irocol S R L Macchina per la termostiratura e/o la termoformatura di una calzatura o di un suo componente.
FR3116700A1 (fr) * 2020-11-30 2022-06-03 Rossignol Lange S.R.L Dispositif de thermoformage des chaussures de ski

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US7287293B2 (en) 2005-08-12 2007-10-30 Nike, Inc. Custom fit system with adjustable last and method for custom fitting athletic shoes
IT1397596B1 (it) 2009-12-21 2013-01-16 Head Technology Gmbh Calzatura a calzabilita' migliorata.
AT510266B1 (de) * 2010-11-16 2012-03-15 Atomic Austria Gmbh Verfahren zur herstellung eines schalenteils eines sportschuhs und ein gemäss diesem verfahren hergestellter schalenteil sowie ein mit diesem schalenteil ausgestatteter sportschuh
AT510545B1 (de) * 2011-01-07 2012-05-15 Fischer Sports Gmbh Schuh, insbesondere alpin- oder langlaufschuh, mit einem schalenförmigen element
AT510836B1 (de) * 2011-04-07 2012-07-15 Atomic Austria Gmbh Schale eines sportschuhs, insbesondere eines schischuhs, und ein verfahren zur herstellung einer solchen schale
US20150230539A1 (en) 2014-02-17 2015-08-20 Calzaturificio Dal Bello S.R.L. Sport Footwear for Practicing Winter Sports and Corresponding Method of Production
EP3072411B1 (de) 2015-03-25 2017-12-27 Tecnica Group S.p.A. Verfahren und anordnung zur anpassung von schuhen, insbesondere von sportschuhen
US10398191B2 (en) 2017-05-04 2019-09-03 Carl Cox Ski boot assembly
IT201700049643A1 (it) * 2017-05-08 2018-11-08 Tecnica Group Spa Metodo per la personalizzazione di una calzatura e kit per la realizzazione di detto metodo
EP3632251B1 (de) * 2018-10-04 2023-03-29 Calzaturificio dal Bello S.R.L. Sportschuh und verfahren zur konstruktion davon
FR3096555B1 (fr) 2019-05-28 2021-05-21 Salomon Sas Procédé et dispositifs d’adaptation d’une chaussure de ski
WO2021068166A1 (zh) * 2019-10-10 2021-04-15 孙寅贵 通用于滑雪和日常生活的靴子
USD1007110S1 (en) 2022-03-23 2023-12-12 Mountain Origins Design LLC Footwear
USD1007825S1 (en) 2022-03-23 2023-12-19 Mountain Origins Design LLC Footwear
USD1007826S1 (en) 2022-03-23 2023-12-19 Mountain Origins Design LLC Footwear
USD1008611S1 (en) 2022-03-23 2023-12-26 Mountain Origins Design LLC Footwear

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DE8611889U1 (de) 1986-04-30 1986-10-30 Dauscher, Herbert, 8500 Nuernberg Skischuh
FR2739760A1 (fr) 1995-10-11 1997-04-18 Salomon Sa Procede et dispositif de chauffage d'une garniture interieure de chaussure
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WO2004052134A1 (en) 2002-12-11 2004-06-24 Tecnica Spa Sport footwear having a rigid shell to improve the user's comfort

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009046477A3 (de) * 2007-10-12 2009-07-02 Fischer Sports Gmbh Verfahren zur herstellung von schuhen, leisten hierfür und schuh
US8549688B2 (en) 2007-10-12 2013-10-08 Fischer Sports Gmbh Method for producing shoes, strips therefor and shoe
WO2014015354A1 (de) * 2012-07-24 2014-01-30 Fischer Sports Gmbh Vorrichtung und verfahren zum anpassen eines skischuhs
IT201900005732A1 (it) * 2019-04-12 2020-10-12 Irocol S R L Macchina per la termostiratura e/o la termoformatura di una calzatura o di un suo componente.
FR3116700A1 (fr) * 2020-11-30 2022-06-03 Rossignol Lange S.R.L Dispositif de thermoformage des chaussures de ski

Also Published As

Publication number Publication date
FR2902981A1 (fr) 2008-01-04
EP1872678B1 (de) 2015-07-22
FR2902981B1 (fr) 2008-10-31
US20080000109A1 (en) 2008-01-03
EP1872678A3 (de) 2008-01-23
US8893407B2 (en) 2014-11-25

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