EP0035990A1 - Semelle pour chaussure - Google Patents

Semelle pour chaussure Download PDF

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Publication number
EP0035990A1
EP0035990A1 EP81890040A EP81890040A EP0035990A1 EP 0035990 A1 EP0035990 A1 EP 0035990A1 EP 81890040 A EP81890040 A EP 81890040A EP 81890040 A EP81890040 A EP 81890040A EP 0035990 A1 EP0035990 A1 EP 0035990A1
Authority
EP
European Patent Office
Prior art keywords
sole
parts
connecting parts
sole according
connecting part
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
EP81890040A
Other languages
German (de)
English (en)
Other versions
EP0035990B1 (fr
Inventor
Johann Jun. Ehrlich
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.)
DISTROPAT AG
Original Assignee
DISTROPAT AG
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 DISTROPAT AG filed Critical DISTROPAT AG
Publication of EP0035990A1 publication Critical patent/EP0035990A1/fr
Application granted granted Critical
Publication of EP0035990B1 publication Critical patent/EP0035990B1/fr
Expired 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
    • A43B13/16—Pieced soles
    • 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
    • A43B13/04—Plastics, rubber or vulcanised fibre
    • 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
    • A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/37—Sole and heel units

Definitions

  • the invention relates to a sole for shoes, consisting of at least two preformed, essentially rigid parts, which are connected to one another by preformed connecting parts made of bulky material.
  • Rigid soles are already known and have the advantage that they support the foot in an orthopedically advantageous manner. If the rigid soles are orthopedically designed with a footbed, then they have a heel arch, an inner joint support, an outer joint support, a metatarsal support, a ball well and, if necessary, a toe barrier, all of which must have a certain strength and stability in order to perform their task to be able to.
  • Such rigid soles usually consist of wood, but also of cork or plastic. Wooden soles have the additional advantage that they have a temperature-regulating and moisture-absorbing effect, so that such soles are hygienic and comfortable to wear.
  • the flexible connecting part from foamed polyurethane.
  • foamed polyurethane Such a connecting part made of polyurethane can be foamed directly onto the wooden parts, a secure and firm connection between the connecting part and the wooden parts being achieved without additional measures.
  • this requires separate molds into which the wooden parts are inserted, and then the polyurethane-forming material for the production of the connecting part must be entered into the mold, which material consists of two components, which are only immediately before being entered into the mold be mixed together in a mixing head.
  • soles which consist of wooden parts with foamed polyurethane connecting parts arranged between them, numerous costly devices are required, the purchase of which is only worthwhile if large series are to be produced.
  • Soles which consist of two rigid parts which are connected to one another by an intermediate part made of flexible material which is glued to the two rigid sole parts.
  • the connecting part consists of a strip-shaped material, the end of which is inserted into grooves which are arranged approximately in the middle of the opposite end face of the rigid parts to be connected to one another. These end faces are at a distance from one another, so that gaps are formed both on the side of the sole facing the foot and on the running side of the sole, which gaps are not filled by the connecting part provided only in the central region of the end faces.
  • Such a sole is unusable in practice.
  • the present invention has for its object to avoid the disadvantages of the known soles and to provide a sole for shoes that is not only easy and simple to manufacture, but also in which a permanent connection between the substantially rigid part and the connecting parts made of flexible material.
  • the invention is based on a sole of the type described in the introduction and essentially consists in that both the essentially rigid parts and the connecting parts have a pore or at least in the adjacent edge regions. Have cell structure, wherein the pores or cells are at least partially open on the contacting surfaces, and that these contacting fins are connected to each other by an adhesive.
  • Connecting parts in the sense of the invention are the intermediate parts bridging the gap between the essentially rigid parts, the sole parts arranged on the underside of the essentially rigid parts, which can also be formed in one piece with the mentioned intermediate parts.
  • the adhesive as long as it has not yet hardened, penetrates into the open pores or cells of both the essentially rigid parts and the flexible connecting parts and solidifies there, so that the connection with the Adhesive takes place over a substantially enlarged surface and the adhesive is anchored in the pores or cells. This creates a mechanical connection between the essentially rigid parts and the flexible connecting parts, which can withstand even the heaviest loads.
  • connection between the essentially rigid parts and the flexible connecting parts can also withstand a very large number of bending stresses.
  • the production is simple because, if necessary after a pretreatment of the contacting surfaces, only the adhesive has to be applied. Since, in the sole according to the invention, the connecting parts extend over the entire thickness of the sole, that is, there are no gaps in the area of these connecting parts, the disadvantages of the known sole, in which the connecting part consists of a strip-shaped material, do not occur.
  • the essentially rigid parts can consist of wood or wood-based materials such as pressed wood or plywood in a manner known per se. Wood already has a pore structure, into which the not yet hardened adhesive can penetrate, so that essentially no pretreatment of the surfaces of the essentially rigid parts contacting the connecting parts is necessary.
  • the essentially rigid parts can also consist of cork or cork materials such as pressed cork or cork latex (cork shot bound with rubber milk). Cork also has an open-pore structure into which the not yet cured adhesive can penetrate.
  • the essentially rigid parts and / or the connecting parts can consist of polymers having a cell structure.
  • the adhesive penetrates into the open cells, solidifies there and results in a good mechanical connection.
  • Foamed polymers which have the desired cell structure, are expediently used for the essentially rigid parts and / or the connecting parts.
  • These parts can be produced in a simple manner by adding a blowing agent to the material or by producing a gas which acts as a blowing agent during the reaction itself.
  • low-boiling liquids such as fluorinated carbons or solid substances which release a gas when heated can be added to the material, whereupon this material is filled into a mold to form the essentially rigid parts or the flexible connecting parts and allowed to harden there.
  • the essentially rigid parts are made of polyurethane, carbonic acid is formed by the reactants forming the polyurethane during curing, which acts as a blowing agent.
  • the polymers can be provided with fillers.
  • These fillers can be, for example, wooden parts, cork parts and / or leather parts, in particular leather fiber materials, that is to say substances which also have a cell structure.
  • the use of such fillers not only saves on polymeric material, but these fillers, when used in the essentially rigid parts, also stiffen and reinforce these parts. Furthermore, a special appearance of the surface can be achieved with the fillers.
  • the fillers of tiny bubbles according to the invention, the thin shell of which consists of elastic vinylidene chloride copolymer and / or vinyl chloride copolymer and whose hollow core contains a gas, preferably air.
  • a gas preferably air.
  • At least the front area of an outsole glued to the underside of the rigid parts is formed in one piece with the connecting parts. This results in an additional connection between the rigid parts via the outsole, which is made of the same material as the connecting parts, that is also made of flexible material.
  • a particularly advantageous embodiment of the sole according to the invention is obtained if the width of the connecting parts - measured in the longitudinal direction of the sole - is greater than the smallest width in the intermediate central area, at least in the edge area adjacent to the foot sole, preferably also in the edge area adjacent to the tread.
  • the connecting part bulges outwards, which the wearer of the shoe provided with a sole according to the invention finds uncomfortable.
  • the sole of the wearer is pinched between the rigid parts if the width of the connecting part - measured in the longitudinal direction of the sole - in the edge region adjacent to the sole of the foot is small and therefore the edges connected by the connecting part become of rigid parts when turning.
  • the edge regions of the connecting parts are rounded off in the middle region. This avoids sharp edges in which when turning Large tensile and compressive stresses occur which can lead to the destruction of the connecting parts in this area, and the connecting parts thus formed undercut the correspondingly shaped rigid parts, both in the edge region adjacent to the sole of the foot and in the edge region adjacent to the tread, so that the connection between the rigid parts and the connecting parts is further improved.
  • the edge regions of the connecting parts preferably merge tangentially into the surface of the sole, as a result of which there are no steps at the transition point, which are perceived as disruptive by the user, in particular on the side of the shoe sole adjacent to the sole of the foot of the user.
  • the thickness of the connecting parts increases steadily in such an embodiment, so that a smooth transition is formed between the rigid parts and the flexible connecting parts and no disturbing steps occur even when the connecting parts are loaded.
  • the connecting parts are formed symmetrically to a central axis running essentially perpendicular to the tread and preferably also to an axis running perpendicular to this central axis and running essentially in the longitudinal direction of the sole.
  • the connecting parts reaching to the sole surface facing the sole of the foot and at least the front region of the outsole formed integrally with the connecting parts consist of an electrically conductive material, for example of natural or synthetic rubber made electrically conductive .
  • an electrically conductive material for example of natural or synthetic rubber made electrically conductive .
  • Such a rubber can be made electrically conductive in a simple manner by embedding fillers made of activated carbon, for example.
  • the connecting parts are arranged in the ball area and are integrally formed at least with the front area of the outsole, ensures that an electrically conductive connection is always made between the person's foot and the ground at every position of the person concerned, since, for example, also when Lifting off the heel part of the sole, the person is always supported in the ball area. If the connecting parts extend over the entire width of the sole, the required electrically conductive connection between the person and the ground is ensured even when the sole is inclined to the side.
  • the connecting parts can be parallel in one cut seen straight to the tread. However, it is expedient if the connecting parts are arched in section parallel to the tread, as a result of which the bending of the sole is adapted to the foot movement in an orthopedically more favorable manner when walking.
  • At least the surface facing the sole of the foot preferably also the side surfaces of the sole, are machined, for example by grinding or milling, in order to obtain a completely flat, stepless surface and to eliminate the steps which occur during the gluing process.
  • FIG. 1 shows a sole designed according to the invention in a section in the longitudinal direction of the sole when used as an insole, over which the upper part is tweaked, and FIG. 2 when used as a sole, which simultaneously forms an insole and / or footbed.
  • the sole shown in the drawing consists of two essentially rigid parts 1, 2 which have a pore or cell structure and which are connected to one another by a connecting part made of flexible material which likewise has a pore or cell structure.
  • the essentially rigid parts 1, 2 can be made, for example, of wood or wood-based materials such as pressed wood or plywood or of cork or cork materials such as pressed cork or cork latex . (cork shot bound with rubber milk). All of these materials have a cellular structure.
  • the essentially rigid parts from polymers which have a cell structure, that is to say in particular from foamed polymers or from polymers in which the smallest bubbles are arranged as fillers, the thin shell of which consists of elastic vinylidene chloride copolymer and / or vinyl chloride -Copolymerisat exists and its hollow core is a gas preferably contains air.
  • the connecting part 3 either consists of a cell structure-like polymer, so it can be made of polyvinyl chloride, soft polyurethane, semi-hard polyurethane, synthetic or natural rubber, for example, and is arranged in the ball area.
  • the sole of the foot of the user of a shoe provided with such a sole rests on the surface 4 of the sole, the surface 5 of the sole faces the tread and, in the embodiment according to FIG. 1, in which the sole is used as an insole, with one not shown Midsole and possibly an outsole connected, whereas in the embodiment according to FIG. 2 this surface 5 directly supports the outsole 6, which is then preferably formed in one piece with the connecting part 3.
  • the connecting part 3 is formed symmetrically both to a central axis 7 which runs essentially perpendicular to the tread and to an axis 8 which is perpendicular to this central axis and runs essentially in the longitudinal direction of the sole.
  • the width B in the edge regions of the connecting part 3, that is to say in the regions facing the surfaces 4 and 5 of the sole, is larger than the smallest width b in the intermediate central region.
  • the two edge areas merge rounded into the middle area and tangentially into the surfaces 4, 5 of the sole.
  • projections 9 extending from the central region of the connecting part 3 on both sides essentially extend in the longitudinal direction of the sole, which are formed in one piece with the connecting part 3.
  • the lugs 9 are shown in a ball shape, but can also be dovetailed.
  • a sole which consists of two rigid parts, which by a single Ver are connected to each other.
  • several connecting parts can also be provided in the bale area, which also increases the number of rigid parts connected by the connecting parts.
  • the rigid parts between adjacent connecting parts are made very narrow in this case, since all connecting parts are provided in the bale area.
  • the sole according to the invention is produced by manufacturing the essentially rigid parts 1, 2 and the connecting parts 3 separately and then gluing them together. If the essentially rigid parts consist of the above-mentioned materials, which have a porous structure, pretreatment of the surfaces to be bonded to the connecting part 3 is not absolutely necessary. However, it is expedient to mechanically process these surfaces before bonding in order to remove any contaminants, residues or the like adhering to the surface, which could impair the adhesive effect.
  • the surfaces to be glued must either be mechanically roughened or chemically pretreated in order to reveal the cell structure and any residues of an adherent to these surfaces To remove production in a mold originating release agent.
  • the connecting parts are also to be machined on the surfaces to be glued either mechanically or chemically in the manner mentioned. Then the adhesive is applied, the individual parts are joined together in their correct position and pressed.
  • the connecting parts have projections 9 which protrude from the central region and which are designed in the form of a ball or dovetail, these projections and / or the recesses in the rigid parts into which the projections are made intervene, coat with adhesive and the lugs can then be inserted laterally into the recesses.
  • the connecting parts 3 are formed in one piece with the outsole 6, this is also glued to the rigid parts 1, 2 simultaneously with the bonding of the connecting part.
  • the adhesive has hardened, the surface facing the sole of the foot and expediently also the side surfaces of the sole according to the invention are ground off, so that steps which have arisen during the gluing process are eliminated and these surfaces have no disturbing elevations or depressions.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP81890040A 1980-03-07 1981-03-06 Semelle pour chaussure Expired EP0035990B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT127480A AT377900B (de) 1980-03-07 1980-03-07 Sohle fuer schuhe
AT1274/80 1980-03-07

Publications (2)

Publication Number Publication Date
EP0035990A1 true EP0035990A1 (fr) 1981-09-16
EP0035990B1 EP0035990B1 (fr) 1985-06-19

Family

ID=3510337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81890040A Expired EP0035990B1 (fr) 1980-03-07 1981-03-06 Semelle pour chaussure

Country Status (4)

Country Link
EP (1) EP0035990B1 (fr)
AT (1) AT377900B (fr)
DE (1) DE3170982D1 (fr)
DK (1) DK104081A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064050A1 (fr) * 1981-04-29 1982-11-03 Johann Ehrlich Semelle de chaussure et procédé pour sa fabrication

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH339830A (de) * 1954-12-20 1959-07-15 Schaller Johannes Schuhboden

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE13152C (de) * W. SCHUFFENHAUER in Zehlendorf Biegsame Holzsohle für Schuhwerk
DE15684C (de) * TH. VINZENS in Gau-Algesheim Holzsohle mit beweglicher, wasserdichter Verbindung der Vordersohle mit dem Absätze
DE702447C (de) * 1940-01-03 1941-02-07 Behrens Alfelder Schuhleistenf Holzsohle
US2352532A (en) * 1941-10-01 1944-06-27 Ghez Henry Articulated sole of wood or other stiff materials
FR888860A (fr) * 1942-02-06 1943-12-24 Articulation élastique pour semelles de chaussures
GB555459A (en) * 1942-07-29 1943-08-24 William Walter Branston An improved wooden sole
CH254785A (fr) * 1945-04-23 1948-05-31 Richard Joseph Chaussure à semelle composite souple.
AT352585B (de) * 1976-07-20 1979-09-25 Johann Ehrlich Holz Und Kunsts Sohle aus holz fuer schuhe und verfahren zur herstellung derselben

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH339830A (de) * 1954-12-20 1959-07-15 Schaller Johannes Schuhboden

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064050A1 (fr) * 1981-04-29 1982-11-03 Johann Ehrlich Semelle de chaussure et procédé pour sa fabrication

Also Published As

Publication number Publication date
DK104081A (da) 1981-09-08
ATA127480A (de) 1984-10-15
AT377900B (de) 1985-05-10
EP0035990B1 (fr) 1985-06-19
DE3170982D1 (en) 1985-07-25

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