EP0035990B1 - Sohle für Schuhe - Google Patents

Sohle für Schuhe Download PDF

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Publication number
EP0035990B1
EP0035990B1 EP81890040A EP81890040A EP0035990B1 EP 0035990 B1 EP0035990 B1 EP 0035990B1 EP 81890040 A EP81890040 A EP 81890040A EP 81890040 A EP81890040 A EP 81890040A EP 0035990 B1 EP0035990 B1 EP 0035990B1
Authority
EP
European Patent Office
Prior art keywords
sole
parts
sole according
connecting part
substantially rigid
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.)
Expired
Application number
EP81890040A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0035990A1 (de
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/de
Application granted granted Critical
Publication of EP0035990B1 publication Critical patent/EP0035990B1/de
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, with a sole upper side facing the sole of the sole and with an underside facing the tread surface, consisting of at least two preformed, essentially rigid parts and of at least one connecting part made of flexible material which is bonded to this essentially rigid part and arranged in the ball area material, the passing of the sole upper side through over the whole width of the insole, parallel and rectilinear edges is limited, both the substantially rigid parts as well as the connection part/2017in- of the t in the adjacent edge regions of a pore or cell structure with at another bonded surfaces have at least partially opened pores or cells.
  • 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, whereby these parts must have a certain strength and stability in order to fulfill their task can.
  • 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 safe and firm connection between the connecting part and the wooden parts being achieved without additional measures.
  • this requires separate molds in 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.
  • many costly devices are required, the purchase of which is only worthwhile if large series are to be produced.
  • DE-C-13 152 describes a flexible wooden sole in which the connecting part connecting the two wooden parts consists of rubber, which is cast into slots in the two wooden parts.
  • the connecting part connecting the two wooden parts consists of rubber, which is cast into slots in the two wooden parts.
  • the connecting part is composed of different materials, leather also being used, which can have a pore structure on the surface and therefore bonds well when glued to the wood, which also has a pore structure, since the pore structure enlarges the surface and the adhesive is anchored in the pores so that a good mechanical connection is established.
  • the connecting part consists of several pieces made of different materials, a permanent connection of the two wooden parts through the connecting part is not achieved even with a good adhesive connection between the layers of leather and the wooden parts, since a permanent connection of the individual Pieces from which the connecting part is composed is not guaranteed.
  • 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 parts and the connecting parts is secured from flexible material.
  • the invention is based on a sole of the type described above and essentially consists in that the connecting part (s) is or are formed in one piece over the entire thickness of the essentially rigid parts and that the cross-section of the connecting part lying in the longitudinal direction of the sole or the connecting parts in the lower region of the connecting part or the connecting parts in the direction of the bottom of the sole widened continuously.
  • the one-piece design of the connecting parts is based on a sole of the type described above and essentially consists in that the connecting part (s) is or are formed in one piece over the entire thickness of the essentially rigid parts and that the cross-section of the connecting part lying in the longitudinal direction of the sole or the connecting parts in the lower region of the connecting part or the connecting parts in the direction of the bottom of the sole widened continuously.
  • the advantage achieved is that when the connecting parts and the adjacent, essentially rigid parts are bonded, these essentially rigid parts are securely connected via the connecting parts.
  • the connecting parts expand downwards in a steady course, i.e. without edges and corners, the advantage is achieved in connection with the one-piece design of the connecting parts that even with a strong bending of the sole in the area of the connecting parts, the adhesive connection does not come loose , since the expansion of the connecting part on the underside of the sole when spreading is distributed over a larger area and therefore the specific expansion is kept small.
  • the avoidance of corners or edges also eliminates the risk of the connectors tearing at locations where peak loads occur.
  • An additional connection between the essentially rigid parts can be achieved in that an outsole glued to the underside of the essentially rigid parts at least on the front part of the sole also has a pore or cell structure with pores which are at least partially open on the glued surface, which outsole is preferred made of the same material as the connecting parts.
  • a good adhesive connection is also ensured between the outsole and the essentially rigid parts by the adhesive penetrating into the open pores or cells, so that the mechanical connection between the essentially rigid parts is also improved.
  • the outsole can expediently consist of a polymer having a cell structure, preferably of polyurethane. It is advantageous if the outsole is formed in one piece with the connecting parts, so that the tensile stresses which occur when the sole is bent in the connecting parts and in the outsole are divided between the connecting parts and the outsole.
  • 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 cured adhesive can penetrate, so that essentially no pretreatment of the surfaces of the essentially rigid parts that contact 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, for example of polyurethane.
  • 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 in that a blowing agent is added to the material or a gas which acts as a blowing agent is formed during the reaction itself.
  • low-boiling liquids such as fluorinated carbons or solid substances which release a gas under heat 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.
  • 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.
  • a particularly advantageous embodiment of the sole according to the invention is obtained when the connecting parts - measured in the longitudinal direction of the sole - also widen in a continuous manner towards the edge region adjacent to the sole of the foot. This avoids that when the sole is bent, as occurs during normal walking, the edge region adjacent to the sole of the foot is compressed so much that the connecting part bulges outwards, which is perceived as uncomfortable by the wearer of the shoe provided in a sole according to the invention .
  • the edge regions of the connecting parts are rounded off in the middle region. This avoids sharp edges in which large tensile and compressive stresses occur when turning, which can lead to the destruction of the connecting parts in this area, and the connecting parts formed in this way undercut the correspondingly shaped rigid parts, both in the edge region adjacent to the sole of the foot and also in the edge area 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.
  • connection parts After the connection parts have been glued to the rigid parts, 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 that occur during the gluing process.
  • 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 consist, 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 filler, the thin shell of which consists of elastic vinylidene chloride copolymer and / or vinyl chloride -Copolymerisat and the hollow core contains a gas, preferably 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 greater 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 also extend from the central region of the connecting part 3 on both sides, essentially in the longitudinal direction of the sole, which are integrally formed with the connecting part 3.
  • the lugs 9 are shown in a ball shape, but can also be dovetail-shaped.
  • a sole which consists of two rigid parts which are connected to one another by a single connecting part.
  • 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 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. If the essentially rigid parts 1 consist of foamed polymers or polymers provided with tiny bubbles as fillers, 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 adhesive adhering to these surfaces from manufacture to be removed in a mold. 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, the projections and / or the recesses in the rigid parts in which the projections engage are coated with adhesive and the projections can then be pushed laterally into the recesses will.
  • 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. After 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 Sohle für Schuhe Expired EP0035990B1 (de)

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 EP0035990A1 (de) 1981-09-16
EP0035990B1 true EP0035990B1 (de) 1985-06-19

Family

ID=3510337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81890040A Expired EP0035990B1 (de) 1980-03-07 1981-03-06 Sohle für Schuhe

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATA192281A (de) * 1981-04-29 1992-03-15 Distropat Ag Sohle fuer schuhe und verfahren zur herstellung der sohle

Citations (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
GB555459A (en) * 1942-07-29 1943-08-24 William Walter Branston An improved wooden sole
FR888860A (fr) * 1942-02-06 1943-12-24 Articulation élastique pour semelles de chaussures
US2352532A (en) * 1941-10-01 1944-06-27 Ghez Henry Articulated sole of wood or other stiff materials
CH254785A (fr) * 1945-04-23 1948-05-31 Richard Joseph Chaussure à semelle composite souple.
FR2358849A1 (fr) * 1976-07-20 1978-02-17 Ehrlich Holz Kunststoff Semelles pour chaussures

Family Cites Families (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

Patent Citations (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.
FR2358849A1 (fr) * 1976-07-20 1978-02-17 Ehrlich Holz Kunststoff Semelles pour chaussures

Also Published As

Publication number Publication date
ATA127480A (de) 1984-10-15
DK104081A (da) 1981-09-08
EP0035990A1 (de) 1981-09-16
DE3170982D1 (en) 1985-07-25
AT377900B (de) 1985-05-10

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