EP3437701B1 - Unidirektionales reibungsmaterial - Google Patents

Unidirektionales reibungsmaterial Download PDF

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Publication number
EP3437701B1
EP3437701B1 EP17184621.5A EP17184621A EP3437701B1 EP 3437701 B1 EP3437701 B1 EP 3437701B1 EP 17184621 A EP17184621 A EP 17184621A EP 3437701 B1 EP3437701 B1 EP 3437701B1
Authority
EP
European Patent Office
Prior art keywords
structures
fabric
plate
substrate
operative surface
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.)
Active
Application number
EP17184621.5A
Other languages
English (en)
French (fr)
Other versions
EP3437701A1 (de
Inventor
Thomas Bechtold
Alicia BERNHARD
Barnaby CAVEN
Tom Wright
Josep Castellet
Jordi MILLASTRE
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.)
Pomoca SA
Universitaet Innsbruck
Original Assignee
Universitaet Innsbruck
Pomoca SA
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 to DK17184621.5T priority Critical patent/DK3437701T3/da
Priority to RS20210339A priority patent/RS61878B1/sr
Application filed by Universitaet Innsbruck, Pomoca SA filed Critical Universitaet Innsbruck
Priority to PT171846215T priority patent/PT3437701T/pt
Priority to EP17184621.5A priority patent/EP3437701B1/de
Priority to LTEP17184621.5T priority patent/LT3437701T/lt
Priority to ES17184621T priority patent/ES2874256T3/es
Priority to PL17184621T priority patent/PL3437701T3/pl
Priority to SI201730775T priority patent/SI3437701T1/sl
Priority to HUE17184621A priority patent/HUE054728T2/hu
Publication of EP3437701A1 publication Critical patent/EP3437701A1/de
Application granted granted Critical
Publication of EP3437701B1 publication Critical patent/EP3437701B1/de
Priority to CY20211100399T priority patent/CY1124352T1/el
Priority to HRP20210821TT priority patent/HRP20210821T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A63C7/00—Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
    • A63C7/02—Skins; Substitutes for skins

Definitions

  • the present invention relates to a material for providing unidirectional friction, in particular for a ski skin, comprising a substrate-fabric and plate-like structures attached to the substrate-fabric.
  • FR 676 067 A , CH 223 797 A and FR 1 170 272 A disclose a material according to the preamble portion of claim 1 and the use of a plurality of plate-like structures according to the preamble portion of claim 14.
  • Velvet material consists of a densely woven fabric that entraps, through interweaving and cutting, standing fibres. These standing fibres are brushed so that they extend in the same direction, meaning that the feel is smooth in one direction but rough in the reverse direction.
  • the problem of such velvet materials is that the difference in frictional behaviour between a forward and backward motion is not sufficiently high for some applications.
  • conveyor systems can benefit from directional friction to either aid in moving capabilities, for instance, polymer wedges or overlapping plates moving material to elevated positions, or in the reverse direction to slow movement and allow for slipping in the case of blockages.
  • this object is achieved by a material according to claim 1.
  • this arrangement increases the difference between the glide and grip phases of the material.
  • the difference in frictional behaviour between the forward and backward motions of the material can be increased.
  • the frictional resistance of the material, specifically of the plate-like structures will be smaller in the gliding direction and greater in the gripping direction compared to current solutions.
  • a decrease in friction during gliding of the material (forward movement) in the gliding direction enables a more efficient forward motion and an increase in friction during gripping of the material in the gripping direction provides a better grip for the material such that a so-called unidirectional friction can be provided, which means a friction as large as possible in one direction (gripping direction) and as low as possible in the other direction (gliding direction).
  • a so-called unidirectional friction can be provided, which means a friction as large as possible in one direction (gripping direction) and as low as possible in the other direction (gliding direction).
  • Such a material may be used in the fields of sports, in particular outdoor sports, robotics as well as manufacturing and is referred to as unidirectional friction material in the following.
  • several aspects of the unidirectional friction material can be controlled, e.g. the design of the plate-like structures (i.e. size, shape, thickness, material), the backing material (substrate-fabric) and/or the arrangement of the plate-like
  • An attachment of the structures to the fabric is implemented by attaching the plate-like structures to the substrate-fabric via stitchings since stitchings allow an attachment of the structures to the fabric offering high stability, involving low weight and additionally generating low cost.
  • the plate-like structures may be one-sided tiltable such that the structures are suitable to allow the material to glide over a surface in one direction and to provide grip with respect to the surface in the opposite direction. If the plate-like structures are tiltable only on one side it is possible that only in one direction (the gripping direction) a significant friction is present between the unidirectional friction material and a surface of an underground, e.g. snow or the like, namely in the direction from a tiltable side of the plate-like structures towards a non-tiltable side of the plate-like structures which corresponds to the gripping direction.
  • the gripping direction a significant friction is present between the unidirectional friction material and a surface of an underground, e.g. snow or the like, namely in the direction from a tiltable side of the plate-like structures towards a non-tiltable side of the plate-like structures which corresponds to the gripping direction.
  • the plate-like structures may be provided such that the sides of each of the plate-like structures oriented in a same direction are designed either tiltable or non-tiltable.
  • a side of the plate-like structures downstream the respective structure with respect to the gliding direction may lie substantially flat against the operative surface of the fabric and an opposite side of the plate-like structures upstream the respective structure with respect to the gliding direction may lift up from the operative surface of the fabric.
  • the plate-like structures may be arranged in order to at least partially overlap each other.
  • An overlapping arrangement of the plate-like structures increases the possible number of plate-like structures that can be attached to the substrate fabric and therefore increases the number of contact points with the surface to be gripped which provides a better grip of the unidirectional friction material in the gripping direction.
  • an angle between the operative surface of the fabric and the plate-like structures is between 0° and 20°, preferably between 0° and 10°, when a frictional force is applied to the structures in the gliding direction.
  • Such an angle between the operative surface of the fabric and the plate-like structures allows the material to slide over a surface of an underground, for example snow, or vice versa allows a surface of an object to slide over the material with a minimum of frictional resistance.
  • an angle between the operative surface of the fabric and the plate-like structures is between 5° and 60°, preferably between 30° and 45°, when a frictional force is applied to the structures in the gripping direction.
  • Such an angle between the operative surface of the fabric and the plate-like structures provides a maximum of frictional resistance between the material and a surface of an underground to be gripped, for example snow, or a surface of an object to be transported, if the unidirectional frictional material is used as a conveyor belt or the like, for example.
  • the plate-like structures may be disks having a diameter between 3 mm and 100 mm, preferably between 3 mm and 15 mm. Diameters of this size turned out as involving the best balance between stability and gripping properties, since disks of a diameter too small are not engaging the surface to be gripped sufficiently deep, while disks of a diameter too large tend to easily break, when having a small thickness suitable for a lightweight construction, as for example suitable for a ski skin, and therefore do not offer sufficient stability.
  • the plate-like structures may have a maximum width equal or less than the width of the ski skin.
  • the plate-like structures may be provided with a hole such that for example a yarn, string, wire or other attachment means may be passed through such a hole for attaching the structures to the fabric.
  • the plate-like structures may be made of a stiff material, in particular of polymers, metals or laminates of combinations of polymers.
  • a stiff material in particular of polymers, metals or laminates of combinations of polymers.
  • polyethylene in particular high density polyethylene is of specific interest.
  • other materials providing stiffness sufficiently high may be conceivable.
  • the substrate-fabric may be an elongated element such that the unidirectional friction material is suitable for many different applications, e.g. in sports or outdoor industry as well as in material conveyance.
  • the substrate-fabric may be made of a flexible material, in particular of woven, knitted or nonwoven fabrics. These materials may be composed of natural, regenerated or manmade fibres and/or flexible polymers such as rubbers or a combination thereof.
  • the substrate-fabric may be suitable to be attached to a support part, in particular to a gliding surface of a ski. In this manner the substrate-fabric may provide grip only in one direction to any desired part, in particular to a gliding surface of a ski.
  • the substrate-fabric comprises an adhesive connection surface opposite to the operative surface by means of which the substrate-fabric is suitable to be attached to a support part, in particular to a ski.
  • the material may be a ski skin, since the use of the unidirectional friction material as ski skin entails many advantages desired in the field of ski touring where a friction as large as possible in one direction and as low as possible in the other direction facilitates walking with touring skis and supports a ski tourer in any slope.
  • the above-mentioned object is achieved by using a plurality of plate-like structures according to claim 14.
  • a decrease in friction during gliding of the material (forward movement) in the gliding direction enables a more efficient forward motion and an increase in friction during gripping of the material in the gripping direction provides a better grip for the material such that a so-called unidirectional friction can be provided, which means a friction as large as possible in one direction (gripping direction) and as low as possible in the other direction (gliding direction).
  • Figure 1 shows a part of a unidirectional friction material 10 according to an embodiment of the present invention attached to a gliding surface 2 of a ski 1.
  • the material 10 may be attached via adhesive means to the gliding surface 2 of the ski 1.
  • the material 10 comprises a substrate-fabric 12 with a connection surface 14 via which the material is attached to the gliding surface 2 of the ski 1 and an operative surface 16 opposite to the connection surface 14 as well as plate-like structures 18 (disks 18 in the embodiment described) attached to the substrate-fabric 12.
  • the substrate-fabric 12 may consist of any woven, knitted or nonwoven material.
  • the plate-like structures 18 are stiff disks 18 having a diameter of 3 mm to 15 mm and being provided with holes 20 (see figures 2 and 3 ) provided substantially in the middle of each disk 18.
  • the disks 18 are arranged on the fabric 12 such that they lie substantially flat against the operative surface 16 of the fabric 12 when a frictional force is applied to the disks 18 in a gliding direction A substantially parallel to the operative surface 16 of the fabric 12 and lift up from the operative surface 16 of the fabric 12 at one side when a frictional force is applied to the disks 18 in a gripping direction B substantially opposite to the gliding direction A.
  • the state of the material 10 shown in figure 1 is a state during a gripping phase where a frictional force is applied to the disks 18 in the gripping direction B, wherein the angle between the operative surface 16 of the fabric 12 and the disks 18 is approximately 45°.
  • the disks 18 are attached to the operative surface 16 of the fabric 12 by a yarn 22 via a stitching technique.
  • Figures 2 and 3 show a plurality of plate-like structures 18 or disks 18 of the material 10 and one of the plate-like structures or disks 18 of the material 10, respectively, viewed from below in different configurations.
  • the plurality of disks 18 are attached to the fabric 12 through a stitching technique in an overlapping design such that the structure grips a surface in one direction but slides over it in the other.
  • the stitching 22 may be applied either manually or with an embroidery machine and the angle of the stitching yarn 22 and the tension of the stitch controls the extent to which each disk 18 will lift during a grip phase of the unidirectional friction material 10 (friction applied in gripping direction B).
  • a preferable stitching angle may be larger than 20° and smaller than 180°.
  • figures 2 and 3 show how different design aspects can alter the friction properties of the unidirectional friction material 10.
  • figure 3 highlights the design aspect of different angles of the stitching yarn 22 via which the disks 18 are stitched to the fabric 12.
  • the yarn 22 may be passed through the holes 20 of each of the disks 18 and on either side of the holes 20 stitched to the fabric 12, thereby forming an angle between the two ends of the yarn 22 at the opposite sides of the holes 20 of each disk 18.
  • a wider angle of the stitching yarn 22 causes a smaller angle between the operative surface 16 of the fabric 12 and the plate-like structures or disks 18, thus restricting lifting at one end of the plate-like structures or disks 18. If the angle of the stitching yarn 22 is smaller, an angle between the operative surface 16 of the fabric 12 and the plate-like structures or disks 18 is wider, thus the lifting end of each disk 18 can lift up more from the operative surface 16 of the fabric 12.
  • the unidirectional friction material 10 can be controlled, e.g. the design of the plates or disks 18 (i.e. size, shape, thickness, material), the stitching 22 (i.e. material, tension, angle in and out of the plate or disk 18, coarseness), the backing material (fabric 12) and the arrangement of the plates or disks 18.
  • the design of the plates or disks 18 i.e. size, shape, thickness, material
  • the stitching 22 i.e. material, tension, angle in and out of the plate or disk 18, coarseness
  • the backing material fabric 12
  • the plate-like structures 18 may have any shape suitable to lie substantially flat against the operative surface 16 of the fabric 12 when a frictional force is applied in the gliding direction A and to lift up from the operative surface 16 of the fabric 12 at one side when a frictional force is applied in the gripping direction B substantially opposite to the gliding direction A and to provide low friction in the direction of movement (gliding direction A) and grip in the reverse direction (gripping direction B).
  • the attachment of the plate-like structures 18 to the fabric 12 is not restricted to stitching techniques or the like and the use of the material 10 is not restricted to an application as a ski skin, since also applications in the fields of robotics and/or manufacturing, for example, are conceivable.

Landscapes

  • Laminated Bodies (AREA)
  • Braking Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (14)

  1. Material (10) zum Bereitstellen unidirektionaler Reibung, insbesondere für ein Skifell, umfassend:
    einen Trägerstoff (12); und
    plattenartige Strukturen (18), welche an dem Trägerstoff (12) angebracht sind;
    wobei die plattenartigen Strukturen (18) derart an dem Stoff (12) angeordnet sind, dass sie im Wesentlichen flach an einer Wirkfläche (16) des Stoffs (12) anliegen, wenn eine Reibungskraft in einer zu der Wirkfläche (16) des Stoffs (12) im Wesentlichen parallelen Gleitrichtung (A) auf die Strukturen (18) ausgeübt wird, und sich an einer Seite von der Wirkfläche (16) des Stoffs (12) anheben, wenn eine Reibungskraft in einer zu der Gleitrichtung (A) im Wesentlichen entgegengesetzten Greifrichtung (B) auf die Strukturen (18) ausgeübt wird,
    dadurch gekennzeichnet, dass
    die plattenartigen Strukturen (18) über Nähte (22) an dem Trägerstoff (12) angebracht sind.
  2. Material (10) nach Anspruch 1, dadurch gekennzeichnet, dass die plattenartigen Strukturen (18) einseitig neigbar sind, sodass die Strukturen (18) dazu geeignet sind, in einer Richtung dem Material (10) zu ermöglichen, über eine Fläche zu gleiten, und in der entgegengesetzten Richtung eine Griffigkeit in Bezug auf die Fläche bereitzustellen.
  3. Material (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die plattenartigen Strukturen (18) derart angeordnet sind, dass sie wenigstens teilweise einander überlappen.
  4. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass, wenn eine Reibungskraft in der Gleitrichtung (A) auf die Strukturen (18) ausgeübt wird, ein Winkel zwischen der Wirkfläche (16) des Stoffs (12) und den plattenartigen Strukturen (18) zwischen 0° und 20°, vorzugsweise zwischen 0° und 10°, beträgt.
  5. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass, wenn eine Reibungskraft in der Greifrichtung (B) auf die Strukturen (18) ausgeübt wird, ein Winkel zwischen der Wirkfläche (16) des Stoffs (12) und den plattenartigen Strukturen (18) zwischen 5° und 60°, vorzugsweise zwischen 30° und 45°, beträgt.
  6. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die plattenartigen Strukturen (18) Scheiben (18) sind, welche einen Durchmesser zwischen 3 mm und 100 mm, vorzugsweise zwischen 3 mm und 15 mm, aufweisen.
  7. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die plattenartigen Strukturen (18) mit einem Loch (20) bereitgestellt sind.
  8. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die plattenartigen Strukturen (18) aus einem steifen Material, insbesondere aus Polymeren, Metallen oder Laminaten aus Kombinationen aus Polymeren, hergestellt sind.
  9. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Trägerstoff (12) ein längliches Element ist.
  10. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Trägerstoff (12) aus einem flexiblen Material, insbesondere aus gewebten, gewirkten oder nicht-gewebten Stoffen, hergestellt ist.
  11. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Trägerstoff (12) dazu geeignet ist, an einem Halterungsteil (1), insbesondere an einer Gleitfläche (2) eines Skis (1), angebracht zu sein.
  12. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Trägerstoff (12) eine der Wirkfläche (16) entgegengesetzte adhäsive Verbindungsfläche (14) umfasst, mittels welcher der Trägerstoff (12) dazu geeignet ist, an einem Halterungsteil (1), insbesondere an einem Ski (1), angebracht zu sein.
  13. Material (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Material (10) ein Skifell ist.
  14. Verwendung einer Mehrzahl plattenartiger Strukturen (18), welche an einem Trägerstoff (12) angebracht sind, zum Bereitstellen unidirektionaler Reibung, insbesondere für ein Skifell,
    wobei die plattenartigen Strukturen (18) derart an dem Stoff (12) angeordnet sind, dass sie im Wesentlichen flach an einer Wirkfläche (16) des Stoffs (12) anliegen, wenn eine Reibungskraft in einer zu der Wirkfläche (16) des Stoffs (12) im Wesentlichen parallelen Gleitrichtung (A) auf die Strukturen (18) ausgeübt wird, und sich an einer Seite von der Wirkfläche (16) des Stoffs (12) anheben, wenn eine Reibungskraft in einer zu der Gleitrichtung (A) im Wesentlichen entgegengesetzten Greifrichtung (B) auf die Strukturen (18) ausgeübt wird,
    dadurch gekennzeichnet, dass
    die plattenartigen Strukturen (18) über Nähte (22) an dem Trägerstoff (12) angebracht sind.
EP17184621.5A 2017-08-03 2017-08-03 Unidirektionales reibungsmaterial Active EP3437701B1 (de)

Priority Applications (11)

Application Number Priority Date Filing Date Title
SI201730775T SI3437701T1 (sl) 2017-08-03 2017-08-03 Material za enosmerno trenje
PT171846215T PT3437701T (pt) 2017-08-03 2017-08-03 Material de atrito unidirecional
RS20210339A RS61878B1 (sr) 2017-08-03 2017-08-03 Jednosmerni frikcioni materijal
LTEP17184621.5T LT3437701T (lt) 2017-08-03 2017-08-03 Vienakryptė frikcinė medžiaga
ES17184621T ES2874256T3 (es) 2017-08-03 2017-08-03 Material de fricción unidireccional
HUE17184621A HUE054728T2 (hu) 2017-08-03 2017-08-03 Egyirányú súrolóanyag
DK17184621.5T DK3437701T3 (da) 2017-08-03 2017-08-03 Ensrettet friktionsmateriale
EP17184621.5A EP3437701B1 (de) 2017-08-03 2017-08-03 Unidirektionales reibungsmaterial
PL17184621T PL3437701T3 (pl) 2017-08-03 2017-08-03 Materiał o jednokierunkowym tarciu
CY20211100399T CY1124352T1 (el) 2017-08-03 2021-05-11 Υλικο μονοκατευθυντικης τριβης
HRP20210821TT HRP20210821T1 (hr) 2017-08-03 2021-05-21 Jednosmjerni materijal za trenje

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17184621.5A EP3437701B1 (de) 2017-08-03 2017-08-03 Unidirektionales reibungsmaterial

Publications (2)

Publication Number Publication Date
EP3437701A1 EP3437701A1 (de) 2019-02-06
EP3437701B1 true EP3437701B1 (de) 2021-03-10

Family

ID=59558226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17184621.5A Active EP3437701B1 (de) 2017-08-03 2017-08-03 Unidirektionales reibungsmaterial

Country Status (11)

Country Link
EP (1) EP3437701B1 (de)
CY (1) CY1124352T1 (de)
DK (1) DK3437701T3 (de)
ES (1) ES2874256T3 (de)
HR (1) HRP20210821T1 (de)
HU (1) HUE054728T2 (de)
LT (1) LT3437701T (de)
PL (1) PL3437701T3 (de)
PT (1) PT3437701T (de)
RS (1) RS61878B1 (de)
SI (1) SI3437701T1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH718407A1 (de) 2021-03-03 2022-09-15 Getzner Textil Ag Trägerfläche zur Erstellung von Skifellen mit einer Velours-Seite und Skifell.
WO2022194360A1 (en) 2021-03-16 2022-09-22 Martin Kunz Device for motion on snow

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT52989B (de) * 1911-06-06 1912-04-10 Ferdinand Kulischek Einrichtung an Schneeschuhen zum Verhindern des Rückwärtsgleitens.
FR676067A (fr) * 1928-09-03 1930-02-18 Semelle empêchant le recul et le dérapage des skis
CH223797A (de) * 1942-02-05 1942-10-15 Wattenhofer Ernst Steiggurte für Skier.
DE870369C (de) * 1951-02-18 1953-03-12 Heinrich Dr Welker Belag fuer Ski-Laufflaechen mit einer Vielzahl von duennen Plaettchen, die den Widerstand gegen Rueckwaertsgleiten erhoehen
FR1170272A (fr) * 1956-03-05 1959-01-13 Dispositif antidérapant empêchant le recul d'un ski à la montée
US3408086A (en) * 1966-06-20 1968-10-29 Skisearch Three-dimensional surface for skis and the like
CH674946A5 (en) * 1987-06-26 1990-08-15 Paul Rosenich Climbing aid for cross-country skis - has prismatic plates on layer of elastomer material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
HRP20210821T1 (hr) 2021-08-20
CY1124352T1 (el) 2022-07-22
HUE054728T2 (hu) 2021-09-28
LT3437701T (lt) 2021-06-10
SI3437701T1 (sl) 2021-09-30
PT3437701T (pt) 2021-06-07
DK3437701T3 (da) 2021-03-29
EP3437701A1 (de) 2019-02-06
PL3437701T3 (pl) 2022-01-31
RS61878B1 (sr) 2021-06-30
ES2874256T3 (es) 2021-11-04

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