EP0284878A1 - Noyau de construction léger, notamment âme de support de ski - Google Patents

Noyau de construction léger, notamment âme de support de ski Download PDF

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Publication number
EP0284878A1
EP0284878A1 EP88104083A EP88104083A EP0284878A1 EP 0284878 A1 EP0284878 A1 EP 0284878A1 EP 88104083 A EP88104083 A EP 88104083A EP 88104083 A EP88104083 A EP 88104083A EP 0284878 A1 EP0284878 A1 EP 0284878A1
Authority
EP
European Patent Office
Prior art keywords
surface elements
pressure
lightweight core
ski
core according
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.)
Ceased
Application number
EP88104083A
Other languages
German (de)
English (en)
Inventor
Herbert Dipl.-Ing. Tucek
Hans-Joachim Kellner
Roland Vogt
Dieter Heidenreich
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.)
Veb Kombinat Sportgerate Schmalkalden
Original Assignee
Veb Kombinat Sportgerate Schmalkalden
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 Veb Kombinat Sportgerate Schmalkalden filed Critical Veb Kombinat Sportgerate Schmalkalden
Publication of EP0284878A1 publication Critical patent/EP0284878A1/fr
Ceased legal-status Critical Current

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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
    • A63C5/12—Making thereof; Selection of particular materials

Definitions

  • the invention relates to a lightweight core, in particular to a support core of a ski, the type specified in the preamble of claim 1.
  • a lightweight construction core according to DE-OS 33 38 661 A1 which consists of an impregnated paper-like material which is formed by layering corrugated foils with intervening documents, the waves at their valleys and peaks being glued to the intervening documents and the foil layers are under pressure while in use.
  • Such a lightweight core has a relatively low dynamic load capacity, as is particularly necessary with skis. The reason for this is the high elasticity of the stiffening cell system. It is therefore necessary to use complex tension and compression belt components on skis with such a lightweight construction core and to additionally arrange special side cheeks.
  • Another lightweight construction core which has support shafts is known (DD-PS 235 048 A5), in which layered reinforcement zones are arranged between the adjacent support shafts, each of which contains at least one stiffening shaft made of flat materials, the wave surfaces of which are perpendicular to those of the support shafts, Where in which case at least some of the supporting shafts and / or stiffening shafts are each connected at least on one side to a flat stabilization layer made of flat material.
  • the dynamic resilience of this lightweight core is somewhat improved by the arrangement of the layered reinforcement zones. At the same time, however, the pressure resistance is reduced.
  • the invention has for its object to provide a lightweight core, in particular a support core of a ski, which has a high pressure absorption capacity and at the same time ensures good dynamic characteristics with high torsional rigidity.
  • a particularly suitable embodiment is characterized in that the cavity axes of the surface elements form an angle of 89 ° to 45 ° with the pressure-loaded surface, the cavity axes of the surface elements being inclined to one another in the opposite direction. It is possible that the cavity axes of successive surface elements, which are inclined in the opposite direction, are inclined by the same angle to the surface under pressure. However, it is also possible to tilt through an uneven angle.
  • An expedient embodiment consists in that at least two surface elements arranged side by side form a block form, the void axes of which form the angle inclined in the same direction with the pressure-loaded surface, one or more blocks formed from at least two surface elements arranged next to one another then also being fixedly arranged on this block, the void axes of which, with the pressure-loaded surface, each correspond to the previous block form angles inclined in the opposite direction.
  • Individual surface elements can also be arranged between the blocks.
  • the lightweight core When used in such a ski, it corresponds to the invention to arrange the lightweight core between a pressure and tension laminate.
  • the pressure laminate is expediently designed as an upper flange on which the binding rests and the tension laminate as a lower flange on which the outsole covering is arranged.
  • the connection of the lightweight core with the pressure and tension laminate is relatively simple, since it is itself very dimensionally stable due to the structure according to the invention and does not have to be fixed in its shape by the application of the laminates.
  • An advantageous embodiment consists in that three blocks are arranged over the ski width, the cavity axes being inclined in the same direction in each of the blocks forming the lateral edge regions of the ski.
  • the block forming the central region of the width of the ski consists of at least half of the surface elements and at least the Half of the ski width includes, the edge regions consist of at least one surface element.
  • the lightweight core according to the invention enables a structure with static and dynamic characteristic values adapted to the specific application.
  • the solution according to the invention makes it possible, in particular, to design lightweight cores which can be used for skis in such a way that they have different elasticity and torsional rigidity using the same core material and with the same weight. Impregnated materials can also be used for these cores to achieve a low weight.
  • Fig. 1 a section of a symmetrically constructed lightweight core is shown.
  • the lightweight core is made up of individual surface elements 3, a corrugated layer 2 being arranged on a smooth layer 1 and being connected to one another at the turning points 4 of the corrugated layer 2.
  • the smooth layer 1 of the subsequent surface element 3 is firmly connected to the first surface element 3 at the free turning points 4 of the corrugated layer 2.
  • the cavity axes 6 of the surface elements 3 with respect to the pressure-loaded surface 5 an angle ⁇ 1; Include ⁇ 2.
  • the angles are ⁇ 1; ⁇ 2 of the cavity axes 6 of the respective adjacent surface elements 3 inclined to each other in the opposite direction.
  • Fig. 2 another embodiment of the lightweight core is shown, the cavity axes 6 of the successive surface elements 3 at different angles ⁇ 1; are inclined. This arrangement ensures a good surface pressure distribution with a selected design of the torsional rigidity and special load ver division, as required in particular for the manufacture of lightweight cores for skis for high-performance sports.
  • FIG. 3 Another embodiment is shown in FIG. 3.
  • Two side by side surface elements 3 form a block 7, the cavity axes 6 of its surface elements 3 are inclined at an angle ⁇ 1 to the pressure-loaded surface 5 in the same direction.
  • a further block 8 is connected, which also consists of two surface elements 3, the cavity axes 6 are ⁇ 2 at an equal angle, but in the opposite direction, inclined.
  • a uniformly oriented load distribution analogous to the exemplary embodiment shown in FIG. 1, is thus achieved.
  • the blocks 7; 8 summarized surface elements 3 cavity axes 6, which ⁇ 1 in the opposite direction at different angles; are inclined. This structure is thus analogous to the embodiment shown in FIG. 2. It is also possible that the blocks 7; 8 consist of a larger number of surface elements 3, the number of which can be the same size according to the desired load distribution. In a form not shown, it is also possible that between the blocks 7; 8 individual surface elements 3 are arranged.
  • FIG. 5 Ten surface elements 3 are arranged across the width of the ski, two surface elements 3 forming the block 7 on the left-hand side, the cavity axes 6 of which are arranged in a position-oriented manner in the same direction at the angle ⁇ 1.
  • the immediately adjacent five surface elements 3 are in block 8 summarized and have an inclined angle ⁇ 2 in the opposite direction.
  • the lightweight core for other products, for example for composite panels in the wood industry or in construction. Use is particularly useful when torsional stiffness is also required with a high pressure absorption capacity.

Landscapes

  • Laminated Bodies (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
EP88104083A 1987-03-17 1988-03-15 Noyau de construction léger, notamment âme de support de ski Ceased EP0284878A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD87300851A DD280654A3 (de) 1987-03-17 1987-03-17 Leichtbaukern
DD300851 1987-03-17

Publications (1)

Publication Number Publication Date
EP0284878A1 true EP0284878A1 (fr) 1988-10-05

Family

ID=5587534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104083A Ceased EP0284878A1 (fr) 1987-03-17 1988-03-15 Noyau de construction léger, notamment âme de support de ski

Country Status (3)

Country Link
EP (1) EP0284878A1 (fr)
DD (1) DD280654A3 (fr)
FI (1) FI881241L (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713100A1 (fr) * 1993-11-30 1995-06-09 Rossignol Sa Ski.
DE19853265C1 (de) * 1998-11-18 2000-07-20 Hightech Produktions Ges M B H Gleitbrett
US6105991A (en) * 1997-11-20 2000-08-22 The Burton Corporation Core for a gliding board
US6502850B1 (en) 1999-10-12 2003-01-07 The Burton Corporation Core for a gliding board

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406056A1 (de) * 1984-02-20 1985-08-22 Franz Hess & Co. Sperrholzfabrik, Döttingen Skikern
DD235048A5 (de) * 1984-02-15 1986-04-23 �������@������������@��k�� Leichtbaukern, sowie verbundbauteil, insbesondere ski, mit diesem leichtbaukern
EP0231734A1 (fr) * 1985-11-13 1987-08-12 Atomic Skifabrik Alois Rohrmoser Elément structurel, en particulier pour âmes de ski et son procédé de fabrication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD235048A5 (de) * 1984-02-15 1986-04-23 �������@������������@��k�� Leichtbaukern, sowie verbundbauteil, insbesondere ski, mit diesem leichtbaukern
DE3406056A1 (de) * 1984-02-20 1985-08-22 Franz Hess & Co. Sperrholzfabrik, Döttingen Skikern
EP0231734A1 (fr) * 1985-11-13 1987-08-12 Atomic Skifabrik Alois Rohrmoser Elément structurel, en particulier pour âmes de ski et son procédé de fabrication

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713100A1 (fr) * 1993-11-30 1995-06-09 Rossignol Sa Ski.
EP0661086A1 (fr) * 1993-11-30 1995-07-05 Skis Rossignol S.A. Ski
US5492357A (en) * 1993-11-30 1996-02-20 Skis Rossignol Sa Ski with longitudinal reinforcement
US6105991A (en) * 1997-11-20 2000-08-22 The Burton Corporation Core for a gliding board
US6520530B1 (en) 1997-11-20 2003-02-18 The Burton Corporation Core for a gliding board
AT410518B (de) * 1997-11-20 2003-05-26 Burton Corp Kern für ein gleitbrett
DE19810035B4 (de) * 1997-11-20 2006-04-06 The Burton Corp. Kern für ein Gleitbrett
DE19853265C1 (de) * 1998-11-18 2000-07-20 Hightech Produktions Ges M B H Gleitbrett
US6502850B1 (en) 1999-10-12 2003-01-07 The Burton Corporation Core for a gliding board

Also Published As

Publication number Publication date
FI881241A0 (fi) 1988-03-16
FI881241A7 (fi) 1988-09-18
DD280654A3 (de) 1990-07-18
FI881241L (fi) 1988-09-18

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