EP0231797B1 - Keramik-Greifelement für Sportschuhe - Google Patents

Keramik-Greifelement für Sportschuhe Download PDF

Info

Publication number
EP0231797B1
EP0231797B1 EP87100576A EP87100576A EP0231797B1 EP 0231797 B1 EP0231797 B1 EP 0231797B1 EP 87100576 A EP87100576 A EP 87100576A EP 87100576 A EP87100576 A EP 87100576A EP 0231797 B1 EP0231797 B1 EP 0231797B1
Authority
EP
European Patent Office
Prior art keywords
gripping element
metal sleeve
ceramic insert
element body
ceramic
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 - Lifetime
Application number
EP87100576A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0231797A3 (en
EP0231797A2 (de
Inventor
Peter Dipl.-Ing. Greiner
Hubert Ing. Pflüger
Horst Widmann
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.)
Adidas AG
Original Assignee
Adidas 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 Adidas AG filed Critical Adidas AG
Priority to AT87100576T priority Critical patent/ATE52898T1/de
Publication of EP0231797A2 publication Critical patent/EP0231797A2/de
Publication of EP0231797A3 publication Critical patent/EP0231797A3/de
Application granted granted Critical
Publication of EP0231797B1 publication Critical patent/EP0231797B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C15/00—Non-skid devices or attachments
    • A43C15/16—Studs or cleats for football or like boots
    • A43C15/161—Studs or cleats for football or like boots characterised by the attachment to the sole

Definitions

  • the invention relates to a gripping element for sports shoes, with a gripping element body made of plastic and with a ceramic insert forming the tread surface of the gripping element and embedded in the gripping element body.
  • a gripping element of the type specified at the outset (DE-OS 32 33 900) it is already known to inject an oxide ceramic insert directly into the gripping element body made of plastic or to glue it into the latter. Practical experience has shown, however, that such a connection of the ceramic insert to the gripping element body does not withstand the shear forces acting perpendicularly to the longitudinal axis of the gripping element in the long run, so that the ceramic inserts become detached and are lost.
  • a gripping element that does not belong to the type specified at the outset is known (DE-OS 32 33 900; FIGS. 1 to 3 and 6), which does not have a ceramic insert, but in which the gripping element body also consists of ceramic.
  • This has a flange-like widening at its upper end and continuous recesses or cutouts at the widening and is embedded in a substructure made of glass or carbon fiber reinforced polyamide.
  • the plastic material of the substructure is intended to penetrate or penetrate the recesses and cutouts and in this way fix the ceramic gripping element body. With this substructure, the gripping element is then fastened directly in a sole by embedding it.
  • This structure of the known gripping element is so complex and therefore expensive that it is out of the question for a gripping element that should be traded for pennies.
  • the invention is therefore based on the object of providing a gripping element of the type specified at the outset which, despite its simple and therefore inexpensive construction, can withstand the forces occurring during use for a long time.
  • this object is achieved in that the ceramic insert within the gripping element body is encompassed over part of its length by a metal sleeve likewise embedded in the gripping element body and at least on its outer surface encompassed by the metal sleeve has recesses and / or projections which are made of the plastic of the Gripping element body are filled or encased.
  • the solution according to the invention thus provides a composite structure in which the plastic of the gripping element body - which is also the sole material when the gripping elements are directly molded onto a sole (cam) - is used for the form-fitting retention of the ceramic insert by penetrating into its recesses or its projections envelops, while the metal sleeve encompassing the ceramic insert evenly transmits the forces occurring during use to the surrounding body of the gripping element and therefore the service life of the mounting structure, ie the positive connection between plastic and ceramic insert, considerably extended compared to the known solutions.
  • the metal sleeve in its Wall has openings distributed around the circumference, through which the plastic material, which is still flowable or liquid during the production process, can penetrate into the interior of the sleeve in which the ceramic insert is inserted and through which the recesses and projections can flow or flow.
  • the ceramic insert can be fitted into the metal sleeve relatively closely because the plastic finds access to the interior of the sleeve through the openings.
  • the ceramic insert is surrounded by the metal sleeve with sufficient play, so that the plastic can penetrate into the interior of the metal sleeve from the end or the ends during the manufacturing process and flow around the ceramic insert.
  • the game should be just sufficient to allow such an inflow and reflow; the plastic layer located between the inner wall of the sleeve and the outside of the ceramic insert should have a thickness of only a few tenths of a millimeter, expediently only 0.1 mm.
  • the metal sleeve engages over the ceramic insert at least on part of its end face embedded in the gripping element body and rests directly on the end face.
  • the metal sleeve is advantageously formed in one piece with this metal shaft.
  • the inner end face of the metal shaft which may be widened in a flange-like manner to the transverse dimension of the metal sleeve, forms the bottom of the metal sleeve, against which the end face of the ceramic insert rests directly, ie without any plastic in between.
  • the ceramic insert and in particular the part of which is encompassed by the metal sleeve is normally cylindrical, in particular circular-cylindrical, the shape of the metal sleeve being adapted accordingly.
  • a design deviating from a cylindrical shape is also conceivable, e.g. a rectangular or polygonal cross section of the ceramic insert.
  • the metal sleeve must have an appropriate shape.
  • the ceramic insert can furthermore have largely constant transverse dimensions over its longitudinal course, e.g. be formed as a substantially cylindrical body.
  • the part embedded in the gripping element body, or at least the part of the ceramic insert encompassed by the metal sleeve is offset from the part that forms the tread surface, i.e. has smaller transverse dimensions.
  • the part forming the tread surface which is mainly responsible for absorbing the occurring forces, can be given the advantageous lens shape, which gives the maximum strength against the combined loads occurring when the gripping element is used (cf. DE-GBM 85 21 733).
  • the gripping elements shown in FIGS. 1 and 2 on an enlarged scale are consistently rotationally symmetrical in their essential parts and in their shape, so that the representation of an end view is unnecessary.
  • the rotationally symmetrical shape is not essential for the invention, but can be modified in favor of an oval cross-sectional shape, for example, or a prismatic design with a square or polygonal cross-section.
  • the lug shown in Fig. 1 consists essentially of a gripping element body 1, a ceramic insert 2 and a metal sleeve 3, which continues on its top in the form of a threaded metal shaft 4.
  • the gripping element body 1 consists of a plastic, e.g. Polyamide or polyurethane that is flowable during the manufacturing process and can be processed, for example, by injection molding.
  • the shape of the gripping element body 1 is of a type known from conventional gripping elements, in particular studs, and therefore does not require any detailed explanation here. This applies in particular in view of the fact that this shape on the outside of the gripping element body 1 is also not critical, but can be any conical or cylindrical.
  • engagement surfaces 11 are provided for a turning tool and the support surface 12 coming into contact with the running side of the outsole (not shown) can carry a profile that makes it difficult or impossible to involuntarily twist the gripping element in the state attached to the sole.
  • the ceramic insert 2 consists, for example, of aluminum oxide (A1 2 0 3 ), silicon carbide (SiC) or steatite. It has a lower lenticular part 22 which forms the tread surface 21 and an upper part 23 which is substantially cylindrical and has a smaller diameter than the lower part 22.
  • the lenticular lower part 22 has a ratio of its diameter to its thickness of approximately 2.5: 1.
  • the stepped upper part 23 carries three mutually parallel and circumferential ring ribs 24, which form corresponding circumferential ring grooves 25 between them. The edges of the ring ribs or ring grooves are rounded.
  • the metal sleeve 3 is made of steel and overlaps the part 23 of the ceramic insert up to approximately the lowest ring rib 24. It forms a flat bottom 31, on which the flat end face of the ceramic insert 2 is supported directly.
  • the diameter of the metal sleeve 3 is selected so that there is a play in the order of magnitude of 0.05 to 0.1 mm between the ridges of the ring ribs 25 and the inner wall of the metal sleeve 3.
  • the metal sleeve 3 has four circular openings 32 distributed uniformly over its circumference, which are so large that they allow access to the two upper ring grooves 25.
  • both the ceramic insert 2 with its upper part 23 and the metal sleeve 3 are embedded in the plastic of the gripping element body 1 and are positively held by the latter.
  • the plastic of the gripping element body 1 continues into the space existing between the inner wall of the metal sleeve 3 and the outer surface of the ceramic insert 2, where it forms a plastic layer corresponding to the shape of this space, over which the ceramic insert 2 radially extends when the gripping element is loaded Supported on the metal sleeve 3.
  • the cam-shaped gripping element shown in FIG. 2 has a gripping element body 1 'which is made of the same plastic as the outsole 5 and is integral with it.
  • the ceramic insert 2 ' is largely cylindrical over its entire length and has three ring ribs 24' in its upper part, which form ring grooves 25 'between them.
  • the upper end face of the ceramic insert 2 ' is curved in the manner of a spherical cap (convex) and is overlapped at its edge by the correspondingly drawn-in part 34 of a metal sleeve 3' so that there is direct contact between the end face and the inside of the part 34.
  • the metal sleeve 3 ' has openings 32' and is designed in its part overlapping the ceramic insert 2 'and with respect to the openings 32' corresponding to the metal sleeve 32 according to FIG. 1. As there, there is an annular groove 25 'below the upper edge of the metal sleeve 3' in the ceramic insert 2 '.
  • both embodiments of the gripping element according to the invention can be produced in a single production process.
  • the ceramic inserts 2 or 2 'with metal sleeves 3 or 3' placed over them are placed in the casting mold and then cast with the plastic material of the gripping element body 1, which in the embodiment according to FIG. 2 also forms the sole 5.
  • the plastic material penetrates through the openings 32, 32 'and from below into the space inside the metal sleeve 3, 3' and, in the manner already described, produces the positive connection by which the ceramic insert 2, 2 'is held.
  • openings 32, 32 ' are not absolutely necessary, if by correspondingly larger dimensions or by the choice of a particularly flowable plastic material is taken care of so that plastic can penetrate from the lower end of the metal sleeve 3, 3 'in sufficient quantity between the metal sleeve and the ceramic insert.
  • openings 32, 32 ' shown, which both grip annular grooves lying between the ring ribs 24, 24', larger numbers of openings are also possible, each of which has a smaller area and is arranged one above the other in the axial direction of the metal sleeve, for example.
  • the openings can have any shape that differs from the circular shape described. However, it is expedient if the breakthroughs do not penetrate the lower edge of the sleeve because the supporting ability of the metal sleeve is impaired. If no openings are provided in the metal sleeve so that the plastic penetrates from the front end of the metal sleeve, it is expedient to provide ribs and grooves running in the longitudinal direction of the ceramic insert or to interrupt the existing ring ribs at various points on their circumference in order to prevent the inflow of the Lighten plastic.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Sliding-Contact Bearings (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Golf Clubs (AREA)
  • Adornments (AREA)
EP87100576A 1986-02-01 1987-01-17 Keramik-Greifelement für Sportschuhe Expired - Lifetime EP0231797B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100576T ATE52898T1 (de) 1986-02-01 1987-01-17 Keramik-greifelement fuer sportschuhe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3603127A DE3603127C1 (de) 1986-02-01 1986-02-01 Keramik-Greifelement fuer Sportschuhe
DE3603127 1986-02-01

Publications (3)

Publication Number Publication Date
EP0231797A2 EP0231797A2 (de) 1987-08-12
EP0231797A3 EP0231797A3 (en) 1988-02-10
EP0231797B1 true EP0231797B1 (de) 1990-05-23

Family

ID=6293173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100576A Expired - Lifetime EP0231797B1 (de) 1986-02-01 1987-01-17 Keramik-Greifelement für Sportschuhe

Country Status (5)

Country Link
US (1) US4712318A (enExample)
EP (1) EP0231797B1 (enExample)
JP (1) JPS62204701A (enExample)
AT (1) ATE52898T1 (enExample)
DE (2) DE3603127C1 (enExample)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706068A1 (de) * 1987-02-25 1988-09-08 Dassler Puma Sportschuh Greifelement fuer sportschuhe
JP2686957B2 (ja) * 1988-05-13 1997-12-08 モリト株式会社 運動靴用クリート
JPH02199850A (ja) * 1989-01-30 1990-08-08 Nec Corp ゲートアレイ半導体集積回路
US5426873A (en) * 1990-08-01 1995-06-27 Macneill Engineering Company, Inc. Cleat and process for making same
US5918384A (en) 1993-08-17 1999-07-06 Akeva L.L.C. Athletic shoe with improved sole
US7540099B2 (en) 1994-08-17 2009-06-02 Akeva L.L.C. Heel support for athletic shoe
US5628129A (en) * 1995-06-06 1997-05-13 Nike, Inc. Shoe sole having detachable traction members
US5806210A (en) 1995-10-12 1998-09-15 Akeva L.L.C. Athletic shoe with improved heel structure
US5832636A (en) * 1996-09-06 1998-11-10 Nike, Inc. Article of footwear having non-clogging sole
US5979084A (en) * 1997-08-11 1999-11-09 Grant; David Track spike
US6138386A (en) * 1997-09-03 2000-10-31 Spalding Sports Worldwide, Inc. Composite cleat for athletic shoe
US6381878B1 (en) 1997-09-03 2002-05-07 Spalding Sports Worldwide, Inc. Composite cleat for athletic shoe
DE29719312U1 (de) * 1997-10-30 1998-01-08 Greiner, Peter, 88267 Vogt Keramik-Greifelement für Sportschuhe
US6112433A (en) * 1997-10-30 2000-09-05 Greiner; Peter Ceramic gripping element for sports shoes
US6256907B1 (en) * 1998-04-14 2001-07-10 Retractable, Inc. Athletic shoe with retractable spikes
US5996260A (en) * 1998-10-26 1999-12-07 Macneill Engineering Company, Inc. Dual density plastic cleat for footwear
USD421677S (en) * 1999-05-26 2000-03-21 Howard Silagy Shoe stud
US6499235B2 (en) 1999-12-06 2002-12-31 Adidas International B.V. Cleated footwear
US6948264B1 (en) 2000-04-26 2005-09-27 Lyden Robert M Non-clogging sole for article of footwear
US7073813B2 (en) * 2001-01-18 2006-07-11 K2 Corporation Athletic boot with interface adjustment mechanism
JP2002315605A (ja) * 2001-04-19 2002-10-29 Minebea Co Ltd スタッド及びスタッド付きシューズ
DE10241153B3 (de) 2002-09-05 2004-04-08 Adidas International Marketing B.V. Stollen und Schuh
US20070024825A1 (en) * 2005-07-26 2007-02-01 Stephanes Maria De Vaan Adrian Light valve projection systems with light recycling
US7370441B2 (en) * 2006-01-05 2008-05-13 Chuan-Li Chang Hobnail structure
US8056267B2 (en) * 2008-05-30 2011-11-15 Nike, Inc. Article of footwear with cleated sole assembly
US8898935B2 (en) * 2011-08-03 2014-12-02 Nike, Inc. Article of footwear with interlocking cleat member and raised base
DE102015204268B4 (de) * 2015-03-10 2025-11-27 Adidas Ag Sohlen für Sportschuhe, sowie deren Herstellung
US20220151335A1 (en) * 2018-11-15 2022-05-19 N-Ion Sports Technology Limited Grounding footwear with a blade portion
US12023571B2 (en) * 2018-11-28 2024-07-02 Jeffrey P. Sabol Rotatable sports-board binding adapter with translatable low-friction pucks
TWM613515U (zh) * 2021-01-12 2021-06-21 科森複合材料股份有限公司 複合鞋釘
US20220361631A1 (en) * 2021-05-17 2022-11-17 Ronald Lawrence Somers Wear-resistant, fully embedded node for extending the life of polyurethane used in restoring shoes
US12532945B2 (en) * 2023-02-28 2026-01-27 Nike, Inc. Sole structures, and articles of footwear formed therefrom

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DE303612C (enExample) *
GB179747A (en) * 1921-03-16 1922-05-18 Keith Alexander Sealy Clarke Improvements relating to athletic boots and shoes
CH176911A (de) * 1934-08-08 1935-05-15 Lauper Edwin Gleitsicherer Sohlenschützer.
US2292299A (en) * 1939-07-22 1942-08-04 Spalding A G & Bros Inc Athletic shoe
US2292238A (en) * 1939-11-07 1942-08-04 Spalding A G & Bros Inc Shoe and calk device therefor
GB736362A (en) * 1953-02-18 1955-09-07 Anthony Ernest Lillie Improvements relating to studs for athletic shoes
GB780758A (en) * 1954-12-01 1957-08-07 Anthony Ernest Lillie Improvements in studs for boots
US3082549A (en) * 1962-05-01 1963-03-26 Aladino W Dolceamore Slanted cleat assembly for athletic shoes
GB1198419A (en) * 1969-04-10 1970-07-15 Coors Porcelain Co Athletic Shoe
FR2409023A1 (fr) * 1977-11-17 1979-06-15 Adidas Chaussures Crampons pour semelles de chaussures de sport et procede de realisation de semelles de chaussures de sport comportant de tels crampons
AU8318782A (en) * 1981-05-15 1982-11-18 Dowty Seals Limited Studs for footwear
JPS5942889A (ja) * 1982-09-01 1984-03-09 Japan Atom Energy Res Inst 繊維状多孔質材を含む固定化増殖菌体組成物の製造方法
DE3233900A1 (de) * 1982-09-13 1984-03-15 Sportartikelfabrik Karl Uhl Gmbh, 7460 Balingen Sportschuhsohle mit greifelementen
FR2539595B1 (fr) * 1983-01-20 1985-11-22 Patrick Sa Crampon pour chaussure de sport notamment de football, de rugby ou autre
BR8503313A (pt) * 1984-07-19 1986-04-01 Dassler Puma Sportschuh Sapato esportivo com uma sola apresentando elementos pegadores substituiveis
DE3426601C2 (de) * 1984-07-19 1986-12-11 PUMA AG Rudolf Dassler Sport, 8522 Herzogenaurach Sportschuh
JPS61244303A (ja) * 1985-04-19 1986-10-30 モリト株式会社 ゴルフ靴用スパイク
DE8521733U1 (de) * 1985-07-27 1985-11-28 adidas Sportschuhfabriken Adi Dassler Stiftung & Co KG, 8522 Herzogenaurach Stollenförmiges Greifelement für Sportschuhe

Also Published As

Publication number Publication date
DE3762794D1 (de) 1990-06-28
EP0231797A3 (en) 1988-02-10
ATE52898T1 (de) 1990-06-15
JPS62204701A (ja) 1987-09-09
DE3603127C1 (de) 1987-06-25
JPH0481446B2 (enExample) 1992-12-24
EP0231797A2 (de) 1987-08-12
US4712318A (en) 1987-12-15

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