EP0452448A1 - Procede pour la fabrication d'un ski - Google Patents

Procede pour la fabrication d'un ski

Info

Publication number
EP0452448A1
EP0452448A1 EP19900915775 EP90915775A EP0452448A1 EP 0452448 A1 EP0452448 A1 EP 0452448A1 EP 19900915775 EP19900915775 EP 19900915775 EP 90915775 A EP90915775 A EP 90915775A EP 0452448 A1 EP0452448 A1 EP 0452448A1
Authority
EP
European Patent Office
Prior art keywords
ski
hollow body
webs
forming
shaped
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.)
Withdrawn
Application number
EP19900915775
Other languages
German (de)
English (en)
Inventor
Reinhold Sommer
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19893936378 external-priority patent/DE3936378A1/de
Application filed by Individual filed Critical Individual
Publication of EP0452448A1 publication Critical patent/EP0452448A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials

Definitions

  • the invention relates to a method for producing a ski from a strand-shaped hollow body.
  • ski There are considerable demands on a ski. For example, it should be as light as possible with a high load capacity and torsion capability and have a long service life. To achieve this, many materials and combinations of materials are used for the production of a ski. The disadvantage is accepted that the ski is complicated in construction and therefore requires a lot of effort in production.
  • the object of the invention is to create a method for the production of a ski which does not have the disadvantages of the known skis.
  • Extruding or the like is brought into an approximately oval shape, then sections of the length of the ski to be produced are separated from this hollow body, then these sections are subjected to a pressure treatment, such as rolling, pressing, pressing or the like, the later the binding-bearing central region of the ski is not or only slightly exposed to the pressure treatment, while the pressure treatment increases with the distance from the central region and finally - as is known per se - to the edges of the lower surface, the sliding surface of the ski, steel profiles are set up.
  • the steel profiles can be attached using a plastic that fills all cavities and can also form the sliding surface of the ski.
  • the tip of the ski is put on in the same way as before.
  • a ski made in this way is very torsionally rigid and still elastic, and over the entire length of the ski.
  • the ski therefore forms a continuous, even curve when subjected to bending stress.
  • Another advantage is that the ski produced by the method according to the invention consists essentially of only one material; it is therefore easy to manufacture and has a very long life; it also offers many options in terms of design.
  • the extruded hollow body is expediently produced by extrusion from a light metal profile. This enables a very precise shaping within narrow tolerances.
  • the ski produced by the method according to the invention has the highest possible elasticity and is nevertheless extremely torsionally rigid is achieved in that the strand-like hollow body forming the ski is brought into the form of a flat lens.
  • the wall thickness of the strand-shaped hollow body is at least 1 mm in a ski made of aluminum. This gives the ski a low weight without losing torsional rigidity.
  • recesses can be provided for the steel profiles. However, after the pressure treatment, recesses for the steel profiles can be milled into the edges of the lower surface of the ski, ground, pressed in or the like, and the steel profiles can then be inserted into these recesses.
  • projections are formed on both sides of the hollow body forming the ski, which form a flat contact surface of the ski.
  • a sliding surface made of plastic is attached to the flat contact surface in a known manner, the steel profiles being inserted into this plastic layer.
  • the wedge-shaped spaces above the lugs are filled with plastic, so that kinking or bending of the lugs is excluded. This ensures that the ski always grips well with its edge, even on icy slopes and on steep slopes.
  • the central area of the ski, in which the binding is located is subjected to the highest stress
  • the Ribs are advantageously arranged at a distance of about 5 cm from each other. The same effect is achieved in that round bars are embedded in the wedge-shaped spaces at least in the central region of the ski.
  • a stiffening of the ski can be brought about by using webs in the interior of the hollow body distributed at certain intervals over the length of the hollow body, the distance between the webs being approximately 2 to 3 cm from one another in a further development of the invention.
  • the possibility of adjusting the elasticity of the ski is created, specifically in that the length of the webs is dimensioned such that its lower end is at a distance from the lower wall of the hollow body forming the ski. The size of the distance determines the elasticity of the ski in this case.
  • the aforementioned feature of the invention eliminates a further deficiency of the known skis, which consists in the fact that they are not suitable for every type of snow and every terrain.
  • an elastic ski is more suitable for deep snow and soft slopes while on on a hard and icy slope a very stiff ski would be optimal. Since the conditions for skiers in the mountains can change from day to day, a ski that adapts to the elasticity offers considerably more safety and offers more skiing pleasure. Attempts have already been made to produce a ski with variable elasticity, namely this should be possible by tensioning wire ropes provided in the ski. However, the expected effect did not occur, so that this ski could not prevail in practice.
  • the ski according to the invention has a flat surface in the region of the binding, which can be formed, for example, by a plate attached to the hollow body forming the ski.
  • a further improvement of the method according to the invention is achieved in that a layer of elastic material is provided between a plate with a flat surface arranged in the region of the binding and the hollow body forming the ski. This allows the hollow body to deform without hindrance.
  • the installation of the webs in the hollow body forming the ski can be simplified in that the webs are formed in one piece with the plate.
  • the plate is provided on both sides - with respect to the longitudinal direction of the ski - with tongue-like extensions which extend almost to the tip and end of the ski, the webs also being formed in one piece with the tongue-like extensions.
  • Both the plate arranged in the region of the binding and the adjoining tongue-like projections can be firmly connected, for example screwed, to the hollow body forming the ski.
  • a very precise adjustment of the elasticity of the ski according to the invention is possible in that the webs are designed as screws screwed into the upper wall of the hollow body.
  • the ski can be given any elasticity by screwing the screws in or out. It is also possible to screw in the screws to such an extent that a pretension occurs, whereby the rigidity of the ski can be increased if necessary.
  • the screws forming the webs are provided with a head and a washer is located under the screw head.
  • a washer By using washers of different thicknesses, the elasticity of the ski can be changed and adapted to the respective requirements.
  • the individual washers can have different colors or be provided with different notches so that the elasticity that is actually required is also set.
  • threaded bushings are inserted into the upper wall of the hollow body forming the ski and the screws forming the webs are screwed into the threaded bushings. This makes it possible to manufacture the hollow body which forms the ski from light metal and the threaded bushings and the screws which form the bridge from steel.
  • the hollow body forming the ski is inserted at least in the area of the openings into which the webs are inserted are foamed with a plastic before inserting or screwing in the webs.
  • Figure 1 is a plan view of a ski.
  • Figure 2 is a section along the line II-II in Figure 1, on a larger scale.
  • Figure 3 is a section along the line III-III in Figure 1, also on a larger scale.
  • FIG. 4 shows a section corresponding to FIG. 2 through another ski
  • FIG. 5 shows a section corresponding to FIG. 2 through a further ski
  • FIG. 6 shows a section corresponding to FIG. 2 through another different ski
  • FIG. 7 shows the ski according to FIG. 6 in a side view
  • Fig. 9 is a section along the line IX-IX in Fig. 8, on a larger scale.
  • the ski 1 shown in FIGS. 1 to 3 is formed from a uniform hollow body, the ski 1 has a smaller width in its central region 2 than in its front and rear Area. This has been achieved by a different pressure load, whereby - as can be seen from FIGS. 2 and 3 - the ski 1 in its front or rear area 3 is correspondingly flatter than in its central area 2.
  • the sliding surface - steel profiles 4 are attached, which are connected by a plastic layer 5 to the hollow body forming the ski 1.
  • a plurality of webs 7 arranged one behind the other are provided, the webs 7 in the present case being designed as grub screws which are screwed into the upper wall 8 of the hollow body forming the ski 1.
  • the edges of the lower surface of the ski 1 are provided with recesses 9, in which the steel profiles 4 are inserted.
  • the webs 7 are designed as screws provided with a head, a washer 10 being arranged under the screw head.
  • the lower end of the webs 7 is at a distance from the lower wall 11 of the hollow body forming the ski 1, which can be changed by using washers 10 of different thicknesses.
  • the upper wall 8 of the hollow body forming the ski 1 is provided with a shoulder 12 in the region of the webs 7 on its lower edge.
  • the ski 1 shown in FIGS. 6 and 7 with a wall thickness W has the shape of a flat lens, that is to say the shape of an oval with sharp lateral edges.
  • the ski 1 On its underside, the ski 1 is provided with side lugs 14, so that there is a flat support surface.
  • the wedge-shaped spaces 15 above the lugs 14 are filled with plastic.
  • Correspondingly shaped ribs 16, which are at a distance A from one another, are embedded in the wedge-shaped spaces 15 in the central region of the ski 1.
  • the sliding surface of the ski 1 is formed by a plastic layer 17, in which steel profiles 18 are inserted.
  • the ski 1 shown in FIGS. 8 and 9 is provided in the region of the binding with a plate 19 with a flat surface, on which tongue-like projections 20 are formed on both sides, based on the longitudinal direction of the ski 1.
  • the webs 7 are formed in one piece with the plate 19 and the tongue-like projections 20.
  • a layer 21 of elastic material is arranged between the plate 19 and the hollow body forming the ski 1.
  • round rods 22 are embedded in the plastic filling the wedge-shaped spaces 15.

Landscapes

  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)

Abstract

Dans un procédé pour la fabrication d'un ski (1) à partir d'un corps creux en forme de boudin, ledit corps creux en forme de boudin est tout d'abord amené par boudinage, extrusion ou similaire à prendre une forme sensiblement ovale. Ensuite, des tronçons de la longueur du ski (1) à fabriquer sont découpés dans ce corps creux. Puis ces tronçons sont soumis à un traitement de compression, tel que laminage, pressage, emboutissage ou similaire. A cette occasion, la zone médiane (2) du ski (1), laquelle portera plus tard le système de fixation, n'est pas exposée au traitement de compression, ou seulement dans une faible mesure, tandis que le traitement de compression augmente au fur et à mesure de l'éloignement de la zone médiane (2). Ensuite -suivant la méthode connue- des profilés en acier (4) sont posés sur les bords de la surface inférieure, la semelle de glissement, du ski (1). Pour des raisons pratiques, le corps creux en forme de boudin constituant le ski (1) est amené à prendre la forme d'une lentille plate.
EP19900915775 1989-11-02 1990-10-30 Procede pour la fabrication d'un ski Withdrawn EP0452448A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893936378 DE3936378A1 (de) 1989-07-26 1989-11-02 Verfahren zur herstellung eines ski
DE3936378 1989-11-02

Publications (1)

Publication Number Publication Date
EP0452448A1 true EP0452448A1 (fr) 1991-10-23

Family

ID=6392664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900915775 Withdrawn EP0452448A1 (fr) 1989-11-02 1990-10-30 Procede pour la fabrication d'un ski

Country Status (2)

Country Link
EP (1) EP0452448A1 (fr)
WO (1) WO1991006350A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405023B (de) * 1992-03-23 1999-04-26 Wolfgang Lehner Ski
DE4325091A1 (de) * 1993-07-27 1995-02-02 Uwe Emig Aus mehreren Elementen zusammengesetzter Ski
AT407712B (de) * 1995-08-14 2001-05-25 Atomic Austria Gmbh Brettartiges gleitgerät, insbesondere schi mit einem tragkörper

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661219A (en) * 1948-12-31 1953-12-01 Jr Bevis P Coulson Flexible ski
FR1304880A (fr) * 1961-11-02 1962-09-28 Ski avec résistance variable à la flexion
FR2126613A5 (fr) * 1971-02-12 1972-10-06 Sactra Sa
US3977688A (en) * 1972-12-30 1976-08-31 Nippon Gakki Seizo Kabushiki Kaisha Structure for connecting a ski binding clamp to a ski
FR2345176A1 (fr) * 1976-03-22 1977-10-21 Bondivenne Jules Perfectionnement a la construction des skis en utilisant une structure creuse metallique
FR2565836A1 (fr) * 1983-11-25 1985-12-20 Cheramy Sylvain Structure monobloc de ski a profil bi-convexe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9106350A1 *

Also Published As

Publication number Publication date
WO1991006350A1 (fr) 1991-05-16

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Legal Events

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