WO1999022618A1 - Ceramic cleat for sport shoes - Google Patents
Ceramic cleat for sport shoes Download PDFInfo
- Publication number
- WO1999022618A1 WO1999022618A1 PCT/DE1998/003160 DE9803160W WO9922618A1 WO 1999022618 A1 WO1999022618 A1 WO 1999022618A1 DE 9803160 W DE9803160 W DE 9803160W WO 9922618 A1 WO9922618 A1 WO 9922618A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gripping element
- metal sleeve
- ceramic insert
- element according
- element body
- Prior art date
Links
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
- A43C15/162—Studs or cleats for football or like boots characterised by the shape
- A43C15/164—Studs or cleats for football or like boots characterised by the shape having a circular cross section
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 of the gripping element and embedded in the gripping element body, which is encompassed within the gripping element body over part of its length by a metal sleeve likewise embedded in the gripping element body.
- a plastic layer is formed between the peripheral surface of the ceramic insert and the inner surface of the metal sleeve.
- a known ceramic gripping element of the type mentioned at the outset already results in a relatively favorable ratio of stability / cost price.
- the ceramic insert has recesses and / or projections on its circumferential surface encompassed by the metal sleeve, preferably ring ribs and ring grooves, which are filled or enveloped by the plastic layer within the metal sleeve.
- these ring ribs / ring grooves serve primarily, by means of the thicker portions of the plastic layer between the peripheral surface of the ceramic insert and the inner surface of the metal sleeve, the forces acting on the ceramic insert when used more uniformly on the metal sleeve and through this on the gripping element body transferred to.
- this known gripping element the risk of local overloading of the connection between the ceramic insert and the gripping element body in the region of the metal sleeve cannot be eliminated in all cases.
- the object of the invention is therefore to design a gripping element of the type specified at the outset such that the stability is increased with a simple and therefore inexpensive construction.
- this object is achieved in that at least the part encompassed by the metal sleeve
- the peripheral surface of the ceramic insert is smooth and tapered towards the tread surface.
- the ceramic insert does not have any recesses or projections on its peripheral surface, but rather is largely largely smooth and at least slightly tapered in the direction of the tread surface, one is formed during the manufacturing process Plastic layer between this circumferential surface and the inner surface of the metal sleeve, the thickness of which decreases very uniformly in accordance with the tapering of the ceramic insert towards the end surface facing away from the tread surface. It has been shown that when the ceramic insert is subjected to a lateral load, the reveal pressure generated in this way is transmitted in the critical region of the front edge of the metal sleeve in such a way that there is no tendency to loosen the ceramic insert due to local destruction of the plastic, even under heavy load.
- the taper angle does not exceed a value of 6 °.
- the dimensions of the metal sleeve and the ceramic insert are matched to one another so that the ceramic insert can be inserted into a bottom of the metal sleeve.
- an annular gap arises in the area of the sleeve edge, through which the plastic which is flowable at that time can enter the interior of the sleeve during the manufacture of the gripping element and can form the plastic layer mentioned.
- the width of the annular gap naturally depends on the play that exists between the inner surface of the metal sleeve and the end of the ceramic insert facing away from the tread surface.
- the ceramic insert has in its end surface facing away from the tread surface a recess which penetrates the peripheral surface.
- This recess is filled with plastic during the manufacturing process due to its connection to the peripheral surface, which in this way connects the ceramic insert on the end face with the gripping element body.
- the depression can be a rectilinear groove which runs across the end face and passes through the circumferential surface of the ceramic insert with both ends.
- the recess in a cross or star shape, the arms of the cross or star penetrating the peripheral surface of the ceramic insert.
- the ceramic insert is also positively connected to the gripping element body with respect to torques acting about its longitudinal axis.
- the ceramic insert also withstands the frequently occurring attempts to detach the gripping element from the sole of a sports shoe with a pair of pliers when the tool surfaces provided on the gripping element body are already worn out.
- the gripping element according to the invention can in the usual way either be releasably connected to a sports shoe sole or can be molded directly and then in the material unit of the gripping element body and the sole thereon.
- the metal sleeve supports the ceramic insert on its end face facing away from the tread surface and has a floor for this purpose.
- the metal sleeve is expediently crimped around a flange-like extension of the metal shaft and welded to it.
- this extension forms the bottom of the metal sleeve.
- the upper edge of the metal sleeve engages around a disc forming the base and is connected to it, expediently pressed or welded.
- the ceramic insert and in particular the part of which is encompassed by the metal sleeve is normally circular in cross section, the shape of the metal sleeve being adapted accordingly.
- a cross-sectional design deviating from the circular shape is also fundamentally conceivable, for example an oval or elongated cross-section, provided a smooth peripheral surface is guaranteed.
- FIG. 1 shows a longitudinal section through a lug-shaped gripping element.
- FIG. 2 shows an analogous longitudinal section through a gripping element which is inseparably connected to a sole in the manner of a cam;
- Fig. 3 shows a further analog longitudinal section through a spike-shaped releasable gripping element, for example for a golf shoe.
- FIG. 4 shows a further analogous longitudinal section through an elongated design of a gripping element which is inseparably connected to a sole in the manner of a cam;
- Fig. 5 is a section along the line V-V in Fig. 4 and
- FIG. 6 shows a section along the line VI-VI in FIG. 4th
- the gripping elements shown in FIGS. 1 to 3 on an enlarged scale are consistently rotationally symmetrical in their essential parts and in their shape, so that the representation of a front view is unnecessary.
- the rotationally symmetrical shape is not essential for the invention, but can be modified in favor of an oval or elongated cross-sectional shape, for example.
- the cleat shown in Fig. 1 for example for a soccer shoe, 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 relatively hard plastic, e.g. B. polyamide or polyurethane, which is flowable in 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 is an impact-resistant ceramic part and consists, for example, predominantly (96%) of aluminum oxide (Al2O3), silicon carbide (SiC), silicon nitride, zirconium oxide, steatite or other oxidic or non-oxide high-performance ceramics. It has a tread surface 21 which can be flat or slightly lenticularly curved and merges into the peripheral surface 23 with a strong rounding 22.
- the peripheral surface 23 is slightly conical, that is to say tapering towards the tread surface 21; the taper angle ⁇ (or half the cone angle) is approximately 1.5 ° in the exemplary embodiment and expediently does not exceed 2 °.
- the upper end face 24 of the ceramic insert 2 facing away from the tread surface 21, the edge of which is also rounded, has a rectilinear groove 25 with a substantially rectangular cross-section which extends across it and is open towards the peripheral surface 23 on both sides.
- the diameter of the ceramic insert 2 is at its upper end about 10 mm, its length about 11 mm and the depth of the groove 25 about 1.5 mm.
- the metal sleeve 3 is made of steel and overlaps the upper part of the ceramic insert 2 to about 40% of its length. At the lower end of the metal shaft 4, this is shaped into a flange-like extension 41, over the edge of which the upper end of the metal sleeve 3 is flanged and welded to it. As a result, the extension 41 forms a flat floor on which the flat end face 24 of the ceramic insert 2 is supported directly.
- the inner surface 31 of the metal sleeve 3 is approximately cylindrical and its diameter is selected so that the ceramic insert 2 rests almost or completely against the inner surface 31 in the region of the transition to its peripheral surface 23.
- the metal sleeve 3 has six circular openings 32 evenly distributed over its circumference, which are so large that they allow the plastic to enter the space created by the rounding of the end face 24 and thus to the ends of the groove 25.
- the lower end section 33 of the metal sleeve 3 is offset by an increased wall thickness and thereby reinforced.
- both the ceramic insert 2 and the metal sleeve 3 are embedded in the plastic of the gripping element body 1 over the largest part of its length and are positively held by the latter.
- the plastic of the gripping element body continues into the space between the inner wall of the metal sleeve 3 and the peripheral surface 23 of the ceramic insert and forms a plastic layer 14 there, over which the ceramic insert 2 extends in the radial direction, that is to say transversely, when the gripping element is loaded its longitudinal axis is supported on the metal sleeve 3.
- the thickness of the plastic layer 14, apart from the connection to the gripping element body 1 via the openings 32 increases in the direction to the end face 24 and is in any case largely constant in the thickened area 33 of the metal sleeve 3 in the circumferential direction.
- the edges of the openings 32 can be rounded in a manner not shown in order to minimize shear effects on the plastic connections with the gripping element body 1 which extend through the openings 32.
- 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, which is only partially shown, and is integral with it. This plastic differs from that of which the gripping element body 1 according to FIG. 1 consists, in order to meet the demands placed on the function of an outsole by a corresponding softness and flexibility.
- the ceramic insert 2 ' is with the ceramic insert 2 identical to FIG. 1 and therefore requires no further description. This also applies to the part of the metal sleeve 3 'which overlaps the ceramic insert 2 and which differs from the embodiment described in connection with FIG. 1 in that its bottom 41' is formed by a flat disc which is in contact with the flanged upper edge of the metal sleeve 3 'is welded or pressed.
- the basic structure of the embodiment according to FIG. 3 largely corresponds to that according to FIG. 1.
- a gripping element body 1 '' made of a relatively hard plastic, e.g. B.
- Polyamide is made and has a conical shape. He points
- Attack surfaces 11 '' for actuation by a corresponding turning tool is widened to an edge 12 '' at its upper end intended for bearing against the outsole, not shown.
- the ceramic insert 2 '' made of the materials mentioned above is in this embodiment due to the
- tread area 21 ′′ is relatively small owing to the small diameter and the rounding that can be seen in FIG. 3, and acts as a tip.
- the metal sleeve 3 ′′ is connected at its upper end to a metal shaft 4 ′′ by being pressed into a groove 42 ′′ machined into its lower end face. Its bottom is therefore formed directly by the end face 41 ′′ of the metal shaft 4 ′′.
- the metal shaft 4 ′′ has an external thread in the usual way in order to match a corresponding golf shoe sole with a threaded insert to be able to be connected.
- the metal sleeve 3 ′′ has in its wall four openings 32 ′′ evenly distributed on the circumference, which extend so far upwards that the plastic entering during the production process flows around the upper end of the ceramic insert 2 ′′ and into a provided therein, not specified groove can occur in the end face of the ceramic insert.
- the metal sleeve 3 ′′ has a cylindrical shape in accordance with the previously described exemplary embodiments
- Plastic layer 14 '' arises during the manufacturing process, the thickness of which decreases more rapidly towards the top. In the area of the lower edge of the metal sleeve 3 '' the
- Ceramic insert 2 '' therefore over a relatively thick annular part of the plastic layer 14 '' on the
- Range of relatively high lateral loads which, however, are better distributed by the thicker plastic layer 14 ′′ and passed on to the metal sleeve 3 ′′.
- the gripping element shown in FIGS. 4 to 6 has a gripping element body 101 which, as in the exemplary embodiment according to FIG. 2, is made of the same plastic as the outsole 105 which is only partially shown and is integral therewith.
- the ceramic insert 102 enclosed by the gripping element body 101 has an elongated cross section with mutually parallel longitudinal sides which are connected to one another at their ends by circular arcs.
- the ceramic insert 102 tapers downward on the front and side surfaces with the taper angle ⁇ , which here is approximately 2 °.
- the tread surface 121 is slightly spherical, while the flat upper end face 124 has three sides and the side faces which run transversely to the longitudinal axis of the ceramic insert 102 has penetrating grooves 125.
- the grooves 125 are rounded at their transitions into the side surfaces 123, as can be seen from FIG. 6.
- the length of the ceramic insert 102 at its upper end is approximately 17 mm, its width approximately 4 mm and its height (which corresponds to the length of the exemplary embodiments according to FIGS. 1 to 3) approximately 8.5 mm.
- the ceramic insert 102 is encompassed over approximately 2/3 of its height by a metal sleeve 103 which forms an interior shaped according to the cross section of the ceramic insert.
- the inner surface 131 of the metal sleeve 103 is formed by generatrices running parallel to one another in the direction from top to bottom.
- the metal sleeve 103 is formed in one piece from steel, for example by compression molding or deep drawing, and has a base 141, in which four circular openings 142 are incorporated, evenly distributed in the longitudinal direction of this base.
- the metal sleeve 103 has a circular opening 132a on its opposing circular cylindrical end faces and three uniformly distributed circular openings 132b at the same height in the mutually parallel side surfaces.
- the openings 142 in the base 141 are arranged such that they correspond at least partially with the grooves 125 of the ceramic insert 102, so that plastic can penetrate into the grooves through the openings 142 during the casting process.
- the ceramic insert 102 With its upper end face 124, the ceramic insert 102 lies against the bottom outside of the grooves 125 or the openings 142 and is otherwise embedded in the plastic of the gripping element body 101.
- the plastic of the gripping element body 101 continues into the interior of the metal sleeve 103, so that a plastic layer 114 is established between the inner wall of the metal sleeve and the side or peripheral surface 123 of the ceramic insert 102.
- the Thickness of the plastic layer 114 apart from the connection to the gripping element body 101 via the openings 132a, 132b, in the direction of the end face 124 and is in any case largely constant in the lower edge region of the metal sleeve 103 in the circumferential direction.
- openings in the metal sleeve are not absolutely necessary, because due to the tapering of the ceramic insert, an annular gap at the lower edge of the metal sleeve in any case is created, can pass through the plastic to form the desired plastic layer, provided that the inner surface of the metal sleeve is cylindrical.
- the latter is also not absolutely necessary, that is to say the metal sleeve can in turn be tapered upwards or downwards. In this case, appropriate dimensioning and / or breakthroughs must ensure that the plastic can properly embed the ceramic insert during the manufacturing process.
- smoothness of the peripheral surface of the ceramic insert used in the present description does not primarily refer to a specific one; Roughness of the ceramic surface, but that this peripheral surface does not have any recesses or projections that clearly determine its geometric shape. Under this condition, however, a certain roughness of the ceramic surface can bind the plastic to the Promote the peripheral surface of the ceramic insert, so that preferably the ceramic insert is used in the fired state without reworking its peripheral surface.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Forging (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59804047T DE59804047D1 (en) | 1997-10-30 | 1998-10-27 | CERAMIC GRIP ELEMENT FOR SPORTSHOES |
JP52515999A JP3445803B2 (en) | 1997-10-30 | 1998-10-27 | Sports shoes points |
EP98962190A EP0948272B1 (en) | 1997-10-30 | 1998-10-27 | Ceramic cleat for sport shoes |
US09/340,893 US6112433A (en) | 1997-10-30 | 1999-06-28 | Ceramic gripping element for sports shoes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29719312U DE29719312U1 (en) | 1997-10-30 | 1997-10-30 | Ceramic gripping element for sports shoes |
DE29719312.0 | 1997-10-30 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/340,893 Continuation US6112433A (en) | 1997-10-30 | 1999-06-28 | Ceramic gripping element for sports shoes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999022618A1 true WO1999022618A1 (en) | 1999-05-14 |
Family
ID=8047967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/003160 WO1999022618A1 (en) | 1997-10-30 | 1998-10-27 | Ceramic cleat for sport shoes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0948272B1 (en) |
JP (1) | JP3445803B2 (en) |
DE (2) | DE29719312U1 (en) |
ES (1) | ES2177113T3 (en) |
WO (1) | WO1999022618A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6592697B2 (en) | 2000-12-08 | 2003-07-15 | Kimberly-Clark Worldwide, Inc. | Method of producing post-crepe stabilized material |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2532825A1 (en) * | 1982-09-13 | 1984-03-16 | Uhl Sportartikel Karl | Sports shoe sole with studs or spokes |
DE8526101U1 (en) * | 1985-09-12 | 1986-01-02 | adidas Sportschuhfabriken Adi Dassler Stiftung & Co KG, 8522 Herzogenaurach | Stud-shaped gripping element for sports shoes |
EP0210362A2 (en) * | 1985-07-27 | 1987-02-04 | Adidas Ag | Stud for a sports shoe |
DE3603127C1 (en) * | 1986-02-01 | 1987-06-25 | Adidas Sportschuhe | Ceramic gripping element for sports shoes |
EP0280108A2 (en) * | 1987-02-25 | 1988-08-31 | PUMA Aktiengesellschaft Rudolf Dassler Sport | Stud for a sports shoe |
EP0501853A1 (en) * | 1991-02-28 | 1992-09-02 | C.I.C.E. S.A. | Replacable ceramic stud |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61244303A (en) * | 1985-04-19 | 1986-10-30 | モリト株式会社 | Spike for golf shoes |
JPH0127682Y2 (en) * | 1985-10-14 | 1989-08-22 | ||
DE8602644U1 (en) * | 1986-02-01 | 1986-03-27 | adidas Sportschuhfabriken Adi Dassler Stiftung & Co KG, 8522 Herzogenaurach | Ceramic gripping element for sports shoes |
-
1997
- 1997-10-30 DE DE29719312U patent/DE29719312U1/en not_active Expired - Lifetime
-
1998
- 1998-10-27 JP JP52515999A patent/JP3445803B2/en not_active Expired - Fee Related
- 1998-10-27 WO PCT/DE1998/003160 patent/WO1999022618A1/en active IP Right Grant
- 1998-10-27 ES ES98962190T patent/ES2177113T3/en not_active Expired - Lifetime
- 1998-10-27 DE DE59804047T patent/DE59804047D1/en not_active Expired - Fee Related
- 1998-10-27 EP EP98962190A patent/EP0948272B1/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2532825A1 (en) * | 1982-09-13 | 1984-03-16 | Uhl Sportartikel Karl | Sports shoe sole with studs or spokes |
EP0210362A2 (en) * | 1985-07-27 | 1987-02-04 | Adidas Ag | Stud for a sports shoe |
DE8526101U1 (en) * | 1985-09-12 | 1986-01-02 | adidas Sportschuhfabriken Adi Dassler Stiftung & Co KG, 8522 Herzogenaurach | Stud-shaped gripping element for sports shoes |
DE3603127C1 (en) * | 1986-02-01 | 1987-06-25 | Adidas Sportschuhe | Ceramic gripping element for sports shoes |
EP0231797A2 (en) | 1986-02-01 | 1987-08-12 | Adidas Ag | Ceramic stud for a sports shoe |
EP0280108A2 (en) * | 1987-02-25 | 1988-08-31 | PUMA Aktiengesellschaft Rudolf Dassler Sport | Stud for a sports shoe |
EP0501853A1 (en) * | 1991-02-28 | 1992-09-02 | C.I.C.E. S.A. | Replacable ceramic stud |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6592697B2 (en) | 2000-12-08 | 2003-07-15 | Kimberly-Clark Worldwide, Inc. | Method of producing post-crepe stabilized material |
Also Published As
Publication number | Publication date |
---|---|
DE29719312U1 (en) | 1998-01-08 |
DE59804047D1 (en) | 2002-06-13 |
EP0948272A1 (en) | 1999-10-13 |
JP3445803B2 (en) | 2003-09-08 |
JP2000516128A (en) | 2000-12-05 |
ES2177113T3 (en) | 2002-12-01 |
EP0948272B1 (en) | 2002-05-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1627608B1 (en) | Clamp element and joint element | |
DE3603127C1 (en) | Ceramic gripping element for sports shoes | |
DE19902461B4 (en) | T-shaped cross-section nut | |
DE69921466T2 (en) | UNAVAILABLE SCREW | |
DE10035580B4 (en) | Positive locking undercut anchor | |
DE69909584T2 (en) | Screw with recess and screwdriver bit for this purpose | |
EP1588975B1 (en) | Coupling | |
WO2007134679A1 (en) | Countersunk head screw | |
EP0210362B1 (en) | Stud for a sports shoe | |
DE3110485A1 (en) | SPREADING ANCHOR | |
EP0292742A1 (en) | Spacing screw | |
WO1993011324A1 (en) | Anchoring device for pre-stressing components in a structural component | |
DE3426947C2 (en) | Thigh part of a hip joint endoprosthesis | |
DE69811953T2 (en) | CERAMIC CUTTING INSERT | |
DE68914452T2 (en) | Anchor fastening. | |
EP0015895B1 (en) | Tension bolt for anchoring construction elements in a foundation body | |
EP1999360A1 (en) | Piston for an internal combustion engine | |
EP0615478A1 (en) | Tool coupling with a radially elastically expandable coupling sleeve and a shaft with a clamping body. | |
WO2002103212A1 (en) | Shear connector | |
DE69001507T2 (en) | Anchoring dowels in an undercut hole. | |
EP0948272B1 (en) | Ceramic cleat for sport shoes | |
DE19632537A1 (en) | Insert sleeve to fasten stud in sole of sports shoe | |
DE2921861C2 (en) | ||
DE3826342A1 (en) | Connection between a reinforcement-steel member and an element which is to be joined thereto | |
DE29710312U1 (en) | Leveling element |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09340893 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 1999 525159 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1998962190 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1998962190 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1998962190 Country of ref document: EP |