EP2200465B1 - Procédé de fabrication de chaussures, embauchoir à cet effet, et chaussure - Google Patents

Procédé de fabrication de chaussures, embauchoir à cet effet, et chaussure Download PDF

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Publication number
EP2200465B1
EP2200465B1 EP08799954A EP08799954A EP2200465B1 EP 2200465 B1 EP2200465 B1 EP 2200465B1 EP 08799954 A EP08799954 A EP 08799954A EP 08799954 A EP08799954 A EP 08799954A EP 2200465 B1 EP2200465 B1 EP 2200465B1
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EP
European Patent Office
Prior art keywords
shoe
foot
strip
area
correction
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Active
Application number
EP08799954A
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German (de)
English (en)
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EP2200465A2 (fr
Inventor
Johann Leitner
Alois Pieber
Franz Josef Resch
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Fischer Sports GmbH
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Fischer Sports GmbH
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Publication date
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Publication of EP2200465A2 publication Critical patent/EP2200465A2/fr
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Publication of EP2200465B1 publication Critical patent/EP2200465B1/fr
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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
    • 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
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0486—Ski or like boots characterized by the material
    • A43B5/049—Ski or like boots characterized by the material with an upper made of composite material, e.g. fibers or core embedded in a matrix
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D3/00—Lasts
    • A43D3/08—Devices for stretching special parts of shoes

Definitions

  • the invention relates generally to the manufacture of hard plastic footwear for sports purposes, i. of shoes, in particular having a hard, durable, thermoplastic outer shell.
  • the invention relates to a method of making a hard-plastic thermoplastic shoe adapted to a user's foot, wherein a prefabricated shoe is at least partially heated and adjusted by deforming the heated region from the outside under pressure, after which the shoe cools becomes.
  • the invention relates to a strip for carrying out the method and also to a method for producing such a thing.
  • Plastic sports shoes such as alpine ski boots or cross-country ski boots, are typically made of plastic by injection molding.
  • a completion of cross-country ski boots by spraying a shoe sole that contains binding parts to already prefabricated shoe parts is from the FR 2736515 A known.
  • Another type of production is in the CH 530 251 A5 described, wherein in the method known from two shoe halves are made by deforming plastic sheets; The two shoe halves are then joined together by welding the plastic or else by gluing. An individual fit is not provided.
  • the disadvantage here is, inter alia, that the shoe is to be provided with an evacuation, and that further, especially if for thermal insulation of the foot in the shoe, the user wears a so-called.
  • Thermosocken a tight closure of the shaft is difficult to leg, so that only a slight negative pressure in the shoe interior can be generated, whereby the pressure difference between the outside and inside of the shoe is so small that may be a good adaptation of the shoe to the
  • the US-A-2007/200264 discloses a method of making a shoe according to the preamble of claim 1.
  • the method of the type specified according to a first aspect of the invention is characterized in that in the prefabricated shoe removed from the foot correction strips made of hard material is introduced, and that the heated shoe pressed by the pressure application to the correction strips becomes.
  • the sole area of the shoe has a predetermined function with regard to interaction with binding parts on the ski so that the sole area should not be deformed as far as possible when adapting the shoe.
  • a material with a higher softening temperature eg 170 ° C, than for the rest of the shoe, such as a shell and a cuff is used.
  • the above-mentioned basic correction strips can in particular also be made to simplify the method per shoe size, but it is also possible to produce a few basic correction strips for each shoe size; following the generation of the basic correction strip, the mentioned individual adaptation is carried out by inserting the elastic molded parts.
  • the shape of the correction strip is obtained by scanning the foot of the respective user by means of a digitizing camera and processing the data obtained in a computer.
  • the invention provides a method of making a hard-plastic thermoplastic shoe adapted to the foot of a user for sports purposes wherein a prefabricated foot-worn shoe is at least partially heated and adjusted by deforming the heated area under pressure, followed by the shoe is cooled;
  • This method is inventively characterized in that similar to the above-mentioned method over the entire prefabricated shoe, a film is placed, this is closed in the calf area, the interior of the film is evacuated and thereby the shoe is pressed against the foot, which, after a Dwell time for solidification of the plastic, the shoe is removed.
  • the invention further provides a last, which is formed as removed from the foot of the user correction strips of hard material.
  • a last which is formed as removed from the foot of the user correction strips of hard material.
  • the distance between the scaphoid bone (naviculare bone) on the inside of the foot or the base bump on the outside of the foot and the area of the big toe ball or the area of the toe is narrower than the measured human foot.
  • the correction strips to achieve a template has an axis which is inclined at an angle relative to a vertical axis.
  • the invention also provides a hard shell shoe for use in the present process or produced according to the present method, wherein a lower shell and a sleeve made of plastic are provided and in particular lower shell and sleeve are made of different plastics.
  • a hard shell shoe is provided for a method as mentioned above comprising a lower shell and a thermoplastic sleeve, wherein at least a portion of the lower shell is made of a plastic having a higher softening temperature than that of the remaining portion of the lower shell and the cuff is made.
  • the known shoe 11 after Fig. 1 and 2 consists essentially of a lower shell 1, a cuff 2, an inner shoe 3 with a so-called. Tongue 3 'and a hinge 4, which connects the sleeve 2 with the lower shell 1 hinged; for closing the shoe 11 serve buckles. 5
  • Fig. 3 the outline of a human foot 6 is shown in such a shoe 11 with dotted lines; it is more or less within the liner 3 on the inner wall 3 '' of the same. This often leads to the formation of cavities 7, in particular below the ankle.
  • the production of the lower shell 1 takes place by injection molding.
  • an injection mold consisting of two mold halves 8 and 8 '(s. Fig. 4 ), which are movable in the direction of double arrows x to each other and from each other and by application of pressures indicated by arrows P, closed.
  • Molded strips 9 is installed, which in certain areas a different contour than the two mold halves 8 and 8', whereby a cavity is formed, which with liquid plastic material from an injection molding machine 10th is completed. After the liquid plastic has cooled in the cavity 7, the lower shell 1 is formed.
  • the cuff 2 is produced.
  • This method in particular the production of the mold halves 8 and 8 'and the mold strip 9, is complicated if individually customized shoes are to be produced therewith.
  • the moldings 9 is designed for an average shoe size or foot shape, in order to be able to use the shoe for the widest possible mass.
  • the liner 3 deformable padding so on the one hand a contact with the outer shell is ensured and on the other hand, a certain crumple zone is formed, so there are no painful pressure points on the foot.
  • this has the disadvantage that it creates relatively soft zones, whereby the transmission of power from the foot to the sports equipment is deteriorated.
  • a picture camera or digitizing camera 12 is shown, with which the foot 6 of a user is photographed; the obtained digital data is supplied to a computer 13 and processed by the latter by means of a computer program, so that when using the computer data for a last production from Fig. 6 apparent, individual skirting 15 is obtained, which can be made of a hard material, such as wood, for example by milling.
  • This customized to a single person skirting, hereafter called correction strips 15, as in Fig. 6 is indicated by an arrow, introduced into a shoe 11, wherein the shoe 11 is heated (see arrow W in Fig. 6 ) so that the shoe 11 becomes soft and the baseboards 15 can be inserted.
  • the digitizing camera 12 is not the creation of images as in the conventional photography, but a system that offers the possibility of using the photographing process to convert the photographed object, in this case the shape of the user's foot, into data points. whereby each data point is assigned an x, y and z coordinate, thereby making it possible to easily use a computer-controlled machine, eg a milling device, three-dimensionally produce the photographed object in a 1: 1 image.
  • a computer-controlled machine eg a milling device
  • Fig. 6.1 shows that in those places where the correction strips 15 has a smaller volume than the shoe 11, cavities 16 remain, which were left individually depending on foot size or filled by padding of the inner shoe 3 in the past, which is for the exercise of Sport is disadvantageous. In addition, concentrated contact or pressure points remain k, where the pressure is often relatively high in sports practice.
  • Fig. 7 In principle, such a procedure emerges.
  • the correction strips 15 are inserted into the already softened by heat shoe 11, and by an external (over) pressure P, the lower shell 1 and the sleeve 2 are pressed against the correction strips 15; After cooling, the stiffened shoe 11, which has assumed the contour of the correction strip 15, finished.
  • Fig. 8 shows such a (reshaped) shoe 11 with a lower shell 1 and a collar 2 and the correction strips 15th
  • the method described in principle for example, using a device according to Fig. 9 to 12 , with two membranes 20 and clamping frame 21, are performed.
  • the device has, like the FIGS. 9 and 10 show two clamping frames 21, which consist for example of steel and as in the present case (s. Fig. 12 ) may have a square shape.
  • a membrane 20 is clamped from rubber-elastic material, wherein at least at one point on at least one of the two membranes 20, a valve 22 is attached to a hose 23 through which after closing the mold, as in Fig. 10 indicated, a vacuum or vacuum between the membranes 20 can be generated.
  • the two clamping frames 21 with the membranes 20 are, as in Fig.
  • Another production option is the autoclave technology, which is used in itself for the production of fiber-reinforced plastic components with a three-dimensional surface.
  • An advantage of this technology is that particularly simple, inexpensive tools can be used.
  • the autoclaves are for example according to Fig. 14 substantially cylindrical hollow body 26, wherein such in Fig. 14 indicated by a ring.
  • the use of autoclave technology also has the advantage that many shoes 11 can be formed simultaneously due to the large interior of the autoclave, since the required individual "tool” is nothing more than a bag made of plastic film.
  • the "tool” in the method according to Fig. 9 to 12 comprises the two clamping frames 21 with the membranes 20 and the additional devices, such as means for raising and removing the clamping frame 21, means for compressing the clamping frame, etc.
  • the adapted rigid plastic shoe After cooling the interior of the autoclave, the adapted rigid plastic shoe is present.
  • the lower shell 1 In order to achieve plastic deformation of the lower shell 1, it is expedient to bring it to a temperature which is preferably at least 10 ° C. above the so-called softening temperature of the plastic material used.
  • Shoe shown has the lower shell 1 two separate holding elements, in the present case a ski binding, cooperating areas 27 and 27 ', which must have a so-called. Normal geometry to ensure the operation of the ski binding.
  • a two-component injection molding method is used in which a plastic material is used for the lower part 17 of the lower shell 1, in particular for the areas 27 and 27 ', ie substantially below the line 28, which comparatively has high softening temperature, for example 170 ° C, and for the shell 1 above the line 28 and for the sleeve 2, a material is used, which has a much lower softening temperature, eg 100 ° C, so that after the molding process, the whole shoe only must be heated to about 110 to 120 ° C, so that the upper part is easily malleable, the lower part 17 but firmly and thus retained in its geometry.
  • a plastic material is used for the lower part 17 of the lower shell 1, in particular for the areas 27 and 27 ', ie substantially below the line 28, which comparatively has high softening temperature, for example 170 ° C, and for the shell 1 above the line 28 and for the sleeve 2, a material is used, which has a much lower softening temperature, eg 100 ° C
  • FIGS. 16 and 17 refer to a special form of shoe fitting, wherein Fig. 16 a side view and Fig. 17 show a front view of a foot 6.
  • Fig. 16 the dashed line shows the outer envelope of the correction strip 15 in relation to a full line, which represents the envelope of the leg or leg 6 of the user.
  • the correction strips 15 In the region of the calf 31 or of the shin 32, the correction strips 15 have an oversize to the front and to the rear, which differs from the flexing region 42, in particular in FIG Fig. 16 shown, funnel-shaped upwards.
  • the space gained thereby is on the one hand for a padded inner shoe tongue (3 'in Fig. 1 ) in the tibial region 32 and a padding in the area of the calf 31 is used. This prevents bruises in the area of the shoe edge. This is especially the side view in Fig. 16 recognizable.
  • the contour of the correction strip 15 extends in the region of the tibia 32 on the inside and outside parallel to the human leg.
  • a stable side guide is obtained, which ensures the exercise of the sport on the one hand a very direct power transmission, on the other hand, but also conveys a better sense of balance.
  • the mentioned parallel contour continues over the inner ankle 34 and the outer ankle 35, whereby in the area of the heel ball 30 the contour of the correction strip 15 also runs parallel to the foot 6 (see FIG. Fig. 16 ).
  • a heel strike can be installed, ie the heel is, as from Fig. 16 can be seen to be a height x above the ground higher than the ball of the foot 18.
  • the contour 15 'of the correction strip 15 can extend in the region of the instep 33 starting from the bend 42 to the toe area parallel to the foot 31. But it is also possible to choose a different contour, which is based essentially on the inner surface of the existing shoe shell.
  • the correction strip 15 has a contour which is narrower than the human foot.
  • the metatarsal area is slightly compressed, which causes no pain due to the existing articulated bone structure, but produces a very good support effect from the side and also ensures that the heel 30 is held in place during the exercise of the sport and not forward can slip.
  • the toe bales 38 and 39 it is advantageous to provide an excess so as not to cause pressure points on the sensitive bones. Furthermore, it will be advantageous to make an excess in the toe area 40 in order to avoid frostbite. Also, the natural sense of balance is maintained throughout the toe area 40 because the foot receptors are not blocked by the clearance.
  • an axis 19 with an angle ⁇ relative to a vertical axis Z may be present (s. Fig. 16 ) to set an individual template.
  • Fig. 18 is designed as a standard strips correction strips 15 at neuralgic sites with holes 43.
  • the particularly pain-sensitive neuralgic areas on the foot are located on the inner and outer ankle, on the inner and outer ball points as well as on the scaphoid (os naviculare), on the base bump and on the heel ball.
  • 43 plastic molded parts 44 are used with an extension 44 'in the holes.
  • Such plastic parts 44 are in Fig. 19 and are simply in the existing holes 43 of the plastic strip 15 in the direction of arrow F in Fig. 18 , in the present case for example in the region of the ankle, inserted.
  • the parts 44 are produced by the plastic injection molding process, wherein it has been found that a certain elasticity is particularly advantageous for the shaping process. Accordingly, preferred materials are Group of silicone elastomers and thermoplastic elastomers in a hardness range Shore D between 45 and 65 suitable.
  • An advantage of this variant is that you can produce a set of base rails per shoe size and can represent many different feet on a kind of modular system with different plastic parts.
  • FIGS. 20 and 21 illustrated method of manufacturing or adaptation of the shoe 11 highlighted.
  • a shoe 11 is preferred for adaptation to the individual foot Fig. 15 used, ie, a shoe in which the lower portion 17, substantially below the line 28, consists of a material having a high softening point, for example 150 ° C, whereas for the upper portion of the shell 1 and the cuff. 2 a plastic is used which has a relatively low softening temperature, eg 60 to 80 ° C; It is then easily possible that instead of the correction strip 15 for shaping directly the leg 50 and the foot 6 of the user draws. This is done so that the shoe 11 is heated to a temperature of 60 to 80 ° C, the user according to Fig.
  • a film 25 in the form of a bag inverts and this film 25 above the upper edge of the shoe 11 with a suitable attachment means, such as an adhesive tape 51, attaches to the calf of the leg 50 of the user.
  • the foil bag 25 is at a suitable location, e.g. in the front sleeve area, provided with a valve 22 and a hose 23 through which vacuum is applied along the arrow P, i. Air can be sucked to evacuate the interior of the film bag 25.
  • Fig. 21 shows, thus puts the film 25 exactly to the surface of shell 1 and cuff 2 and presses the upper Part of the shell 1 above the line 28 and the cuff 2 precisely to the leg 50 of the user.
  • the film 25 is removed, and the shoe 11 is molded directly to the leg 50 of the user.

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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)
  • Composite Materials (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Pour fabriquer à partir d'un matériau thermoplastique dur une chaussure (11) à usage sportif adaptée au pied (6) d'un utilisateur, une chaussure préfabriquée (11) est échauffée au moins par endroits et elle est adaptée par déformation de la région échauffée en exerçant une pression de l'extérieur, à la suite de quoi la chaussure (11) est refroidie; un embauchoir orthopédique (15) en matériau dur, obtenu d'après le pied (6), est introduit dans la chaussure préfabriquée (11), et la chaussure échauffée (11) est pressée contre l'embauchoir orthopédique (15) par la pression exercée.

Claims (17)

  1. Procédé de fabrication d'une chaussure (11) adaptée au pied (6) d'un utilisateur en thermoplastique dur, à des fins sportives, une chaussure préfabriquée étant chauffée au moins par endroits et étant adaptée par déformation de la zone chauffée sous application d'une pression de l'extérieur, suite à quoi la chaussure (11) est refroidie, caractérisé en ce qu'un embauchoir de correction (15) retiré du pied (6) en matériau dur est introduit dans la chaussure préfabriquée (11), et en ce que la chaussure (11) chauffée est pressée en appliquant une pression contre l'embauchoir de correction (15).
  2. Procédé selon la revendication 1, caractérisé en ce qu'un matériau présentant une température d'amollissement supérieure, par exemple 170 °C, à celle de la zone restante de la chaussure, par exemple une coque (1) et une manchette (2), est utilisé pour la zone de semelle de la chaussure (11).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'un embauchoir de correction (15) est utilisé, lequel est plus mince d'une part entre le scaphoïde (os naviculaire) 37 sur le côté intérieur de pied ou la bosse de base (36) sur le côté extérieur de pied et d'autre part la zone de l'éminence du gros orteil (38) ou la zone de l'éminence du petit orteil (39) que le pied humain mesuré (6).
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une surmesure est prévue dans la zone des éminences des orteils (38, 39).
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'un espace libre est présent dans la zone des orteils (40).
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'embauchoir de correction (15) présente un axe (19) selon un angle (α) par rapport à un axe perpendiculaire (Z) pour l'obtention d'un gabarit.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'un embauchoir de correction de base (15) est fabriqué, lequel est pourvu aux endroits névralgiques de trous (43), dans lesquels des pièces moulées élastiques (44) sont insérées.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la forme de l'embauchoir de correction (15) est obtenue par balayage du pied (11) de l'utilisateur respectif à l'aide d'un appareil photonumérique (12) et traitement des données obtenues dans un ordinateur (13).
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'un film (25) est embouti par retournement et est fermé sur toute la chaussure préfabriquée (11) et l'embauchoir de correction (15), l'espace intérieur du film (25) est évacué et la chaussure (11) est par là-même pressée contre l'embauchoir de correction (15), et le film est retiré après un temps de séjour pour la solidification du plastique de la chaussure (11).
  10. Procédé de fabrication d'un embauchoir de correction pour un procédé selon les revendications 1 à 9, caractérisé en ce que le pied (6) d'un utilisateur est enregistré avec une caméra d'imagerie ou un appareil photonumérique (12), les données numériques obtenues sont transmises à un ordinateur (13) et sont traitées à l'aide d'un programme informatique de sorte que lors de l'application des données informatiques pour une fabrication d'embauchoir, un embauchoir de correction individuel (15) soit obtenu, lequel est fabriqué en un matériau dur.
  11. Procédé selon la revendication 10, caractérisé en ce que l'embauchoir de correction (15) est fabriqué en bois par fraisage.
  12. Embauchoir pour la réalisation du procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'il est réalisé comme un embauchoir de correction (15) retiré du pied (6) de l'utilisateur en matériau dur, l'embauchoir de correction (15) s'étendant jusque dans la zone du mollet (31) ou du tibia (32).
  13. Embauchoir selon la revendication 11, caractérisé en ce que la distance entre le scaphoïde (os naviculaire) (37) sur le côté intérieur de pied ou la bosse de base (36) sur le côté extérieur de pied et la zone de l'éminence du gros orteil (38) ou la zone de l'éminence du petit orteil (39) est plus mince que le pied humain mesuré (6).
  14. Embauchoir selon la revendication 12 ou 13, caractérisé en ce qu'il est prévu comme un embauchoir de correction de base (15) pour une pointure et est pourvu aux endroits névralgiques de trous (43), dans lesquels des pièces moulées élastiques (44) peuvent être insérées.
  15. Embauchoir selon l'une quelconque des revendications 12 à 14, caractérisé en ce qu'une surmesure est prévue dans la zone des éminences des orteils (38, 39).
  16. Embauchoir selon l'une quelconque des revendications 12 à 15, 30caractérisé en ce qu'un espace libre est présent dans la zone des orteils (40).
  17. Embauchoir selon l'une quelconque des revendications 12 à 16, caractérisé en ce que l'embauchoir de correction (15) présente un axe (19) incliné selon un angle (α) par rapport à un axe perpendiculaire (Z) pour l'obtention d'un gabarit.
EP08799954A 2007-10-12 2008-10-10 Procédé de fabrication de chaussures, embauchoir à cet effet, et chaussure Active EP2200465B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0163607A AT505989B1 (de) 2007-10-12 2007-10-12 Verfahren zur herstellung eines an den fuss eines benützers angepassten schuhs
PCT/AT2008/000367 WO2009046477A2 (fr) 2007-10-12 2008-10-10 Procédé de fabrication de chaussures, embauchoir à cet effet, et chaussure

Publications (2)

Publication Number Publication Date
EP2200465A2 EP2200465A2 (fr) 2010-06-30
EP2200465B1 true EP2200465B1 (fr) 2012-03-14

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US (1) US8549688B2 (fr)
EP (1) EP2200465B1 (fr)
AT (2) AT505989B1 (fr)
CA (1) CA2702360A1 (fr)
WO (1) WO2009046477A2 (fr)

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AT505989B1 (de) 2010-06-15
CA2702360A1 (fr) 2009-04-16
AT505989A1 (de) 2009-05-15
WO2009046477A3 (fr) 2009-07-02
EP2200465A2 (fr) 2010-06-30
US20100236101A1 (en) 2010-09-23
US8549688B2 (en) 2013-10-08
WO2009046477A2 (fr) 2009-04-16
ATE548928T1 (de) 2012-03-15

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