EP0826397A1 - Planche de surf de neige munie d'un dispositif d'amortissement - Google Patents

Planche de surf de neige munie d'un dispositif d'amortissement Download PDF

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Publication number
EP0826397A1
EP0826397A1 EP97112898A EP97112898A EP0826397A1 EP 0826397 A1 EP0826397 A1 EP 0826397A1 EP 97112898 A EP97112898 A EP 97112898A EP 97112898 A EP97112898 A EP 97112898A EP 0826397 A1 EP0826397 A1 EP 0826397A1
Authority
EP
European Patent Office
Prior art keywords
board
snowboard according
translation
damping
portions
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Withdrawn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
EP97112898A
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German (de)
English (en)
French (fr)
Inventor
Eric Metrot
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.)
Salomon SAS
Original Assignee
Salomon SAS
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 Salomon SAS filed Critical Salomon SAS
Publication of EP0826397A1 publication Critical patent/EP0826397A1/fr
Withdrawn legal-status Critical Current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
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/075—Vibration dampers
    • 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
    • A63C5/03—Mono skis; Snowboards

Definitions

  • the invention relates to an improved snowboard.
  • Surfing is a snow gliding device on which both feet of the user are spread apart from one another along the board and are fixed in an orientation substantially transverse or inclined with respect to the longitudinal axis of the board.
  • US Patent 3,900,204 is the first document to teach positioning the most suitable of the bindings for the practice of the discipline.
  • this part of the board was subject to parasitic vibrational phenomena occurring at frequencies greater than 10 Hertz, most caused by small shocks and irregularities in which have nothing to do with the voluntary deformations caused by the surfer himself in the execution of turns. These vibrational phenomena disrupt the driving of the board which then becomes difficult to control.
  • the main object is therefore to dampen harmful vibrations without contribution of static stiffness in the central area.
  • Document FR-A-2 665 081 relates to a construction snowboard symmetrical with a damping device positioned, in all cases, at the front of the board asymmetrically to provide cushioning predominant on the back-side. It is in a manner known per se high modulus plate which constrains a layer of viscoelastic material connected to the board.
  • the device according to this document brings far too much stiffness in the area where it is located because the elongated blade is glued over its entire surface with the board.
  • the elongated blade is glued over its entire surface with the board.
  • Document FR 2 729 086 relates to a snow south equipped with a device damping formed of viscoelastic bands constrained by a material to high modulus of elasticity and therefore has the same drawbacks as the solution of document FR-A-2 665 081.
  • the aim of the present invention is therefore to provide a satisfactory solution to the aforementioned problems relating to the amortization of a snow plank south.
  • the invention relates to a snow plank comprising two mounting areas of the fasteners, spaced longitudinally on the surface of said board, a central part located between said mounting zones, end portions located on either side of said mounting areas and are ending for at least one of said end parts with a raised edge.
  • the board includes, moreover, a damping device connected to the board in the central part, provided with at least one elongated element for transmitting bending and / or torsional stresses of the central part, said element having at minus two opposite end portions connected to the board and between these two end portions, a central portion free in translation without connection to the board ; at least one of said end portions being in contact with a means of damping which dissipates energy by shearing or friction resulting from displacements in translation, and possibly in rotation, of said portion end during bending and / or torsion deformations of the central part of the board.
  • a board provided with such a device retains its flexibility properties in bending and torsion in the center, favorable for good maneuverability when cornering; also retains nervous ends for performing tricks and jumps; and provides a satisfactory response in terms of vibration damping in areas where damping is required for board control even at high speed and on rough terrain.
  • the device damping consists of two elongated transmission elements which are oriented substantially in the longitudinal direction of the board and which are spaced laterally from each other and arranged on either side of the axis longitudinal median. This favors the treatment of vibrations during combined deformations in bending and torsion, with a preponderance for the bending due to the longitudinal orientation of the transmission elements.
  • the damping device consists of an element elongated in the shape of a cross comprising a central portion without connection with the board and, starting from said central portion; four end portions forming opposite branches two by two.
  • the element elongated is oriented on the board so that each portion extends according to a preferred direction forming an orientation angle of about 45 degrees by relative to the longitudinal direction of the board.
  • Figure 1 is a top view of a surfboard provided with elements of fixation.
  • Figure 2 is a partial side view of an element of the device depreciation.
  • FIG. 3 is a top view of the element in FIG. 2.
  • FIG. 4 is a sectional view along A-A of FIG. 3.
  • FIG. 5 is a sectional view along B-B of FIG. 4.
  • Figure 6 shows in side view a board according to the invention mounted by a surfer in rest position.
  • FIG. 6a is a detail view in section along A-A in the configuration of the figure 6.
  • FIG. 7 illustrates a deformation in pure bending of the board.
  • Figure 7a is a sectional view similar to Figure 6a in the configuration deformation of Figure 7.
  • Figure 8 is a view similar to that of Figure 1 according to a variant of the invention.
  • Figure 9 is a side view, partially in section, of the device of Figure 8.
  • Figure 10 is a top view of a detail of the device according to another variant.
  • FIG. 11 is a sectional view along C-C of FIG. 10.
  • FIG. 12 is a sectional view along D-D of FIG. 10.
  • Figure 13 is a top view of a board according to another variant of the invention.
  • FIG. 14 is an enlarged view of a detail of FIG. 13.
  • FIG. 15 is a sectional view along XV-XV of FIG. 13.
  • Figure 16 is a sectional view along XVI-XVI of Figure 13.
  • Figure 17 is a sectional view along XVII-XVII of Figure 13.
  • Figure 18 is a top view of a board according to another variant of the invention.
  • Figure 19 shows a detail of Figure 18.
  • FIG. 20 is a sectional view of the view in FIG. 19.
  • this is a snowboard 1 for a surfer on foot rear left, or "goofy”, comprising two mounting zones; a rear area 10 where the rear attachment 20 is located, and a front zone 11 where the front fixing 21. Between the two zones 10, 11, illustrated schematically by circular way due to the possibility of angular displacement of fixings, there is a central part 2. Towards the rear of the rear area there is a rear end portion 3 extending by a raised edge 30. From same, beyond the front area is the front end 4 ending in a raised edge 40.
  • the illustrated board is an exemplary embodiment in no way limiting, and one could provide a single raised edge at the front for example.
  • the central part 2 comprises a damping device 5 connected to the board comprising two elongated elements for transmitting flexural and torsional stresses 50, 51 separated.
  • the two elongated elements of transmission 50, 51 are oriented substantially in the longitudinal direction of the board and are spaced laterally from each other and arranged apart and on the other side of the median longitudinal axis I-I '.
  • These elements each have a first end portion 500, 510 and a second end portion 501, 511 connected to the board.
  • a portion control unit 502, 512 which has the particularity of being without connection to the board and therefore free, in particular in translation, during the deformation of the central part of the board in bending and / or twisting.
  • the end portions 500, 510, 501, 511 are all connected to the board by flexible damping means 600, 610, 601, 611 which will be the subject of a detailed description later.
  • the device therefore provides much less stiffness than a damping element connected to its entire length by flexible means as is the case in the prior art cited previously.
  • the elongate element 50 therefore comprises a central portion 502 which is not connected to the upper surface of the board by any connecting means of the bonding type or other.
  • this portion is free in translation longitudinal but also to some extent is able to move vertically with respect to the surface of the board according to the stresses in bending and torsion applied in the central part of the board.
  • the elongated element is extended at the end by an end portion 500 which is connected to the board by a flexible connection means 600.
  • connection is thus ensured by layers of flexible material, preferably made of viscoelastic material 600a, 600b.
  • This flexible depreciation method authorizes a displacement in translation of the end 500a of the portion end 500.
  • a protection and guiding means 7 covers the end of the free portion in translation and is fixedly connected to the board.
  • This protection and guide means 7 is a housing through which is formed an opening 70 for the passage of the end of the free portion which leads to a housing 71; said housing containing a ribbon of material viscoelastic surrounding the end of the free portion, thus forming a layer upper 600b glued on the top of the housing 71 and on the top of said end and a bottom layer 600a glued on the top of the board and on the below said end.
  • the 500a end arrive in stop against the bottom 710 of the housing of the housing under normal conditions of use.
  • the viscoelastic material is preferably an elastomeric material of a hardness between 5 and 85 shore A, a modulus of elasticity between 1 and 150 MPa and a damping coefficient between 0.1 and 2.5.
  • sealants Some of these materials will be preferred as sealants because of their self-adhesive properties that do not require the use of glues. In general, these sealants have varying modules and damping coefficients strongly depending on the temperature. To locate those likely to be used, we will consider that they have a module between 1 and 20 MPa and a damping coefficient between 0.1 and 2.2 for a range of use between -20 and +20 degrees.
  • Figures 6, 6a, 7, 7a schematically represent the operation of the damping device.
  • Figure 6 shows the board in the rest state and the Figure 7, during bending.
  • the central part deforms, for example in the direction F of FIG. 7; which causes displacement relative longitudinal of the end portions 500, 501 with respect to the surface of the board ; and in particular inside the housings 7.
  • This displacement leads to the shearing of the layers of viscoelastic material 600a, 600b and therefore damping by the energy dissipated in the material.
  • the free bending of the board, in particular its central part, is little influenced by the fact that the elongated element is mounted "floating" and is not in any place rigidly connected to the board and in particular the central portion is able to move relative on the surface of the board.
  • Figures 8 and 9 illustrate a variant of the invention in which the device damping 5 consists of an elongated cross-shaped element 52 comprising a central portion 520 without direct connection with the board and, starting from said central portion; four end portions 521a, 521b, 521c, 521d; forming branches aligned and opposite two by two. These portions end are connected to the board by damping means flexible 600, 601, 610, 611.
  • the elongate element 52 is oriented on the board so that each portion end extends in a preferred direction (A-A; B-B) forming an angle ⁇ orientation of about 45 degrees from the longitudinal direction I-I 'of the board. In this configuration, preference is given to torsional damping.
  • the central portion 520 is located at an equidistant point of the two mounting zones 10, 11.
  • Figure 9 shows the damping element whose construction principle is based on the previous mode.
  • each end portion engage in means of protection and guidance or housing 7, four in total. Inside, the construction is identical to that of figure 4.
  • the means of protection and guide 7 is a stirrup comprising a shim of thickness 72 on which is fixed a guide piece 73; and a guide housing 71 at through which the end 501a of the free portion 501 is able to move in translation; a layer of viscoelastic material 602 being provided in contact between the shim 72 and said end.
  • the shim has for the purpose of keeping the elongated element in the form of a blade at a distance d from surface of the board to avoid any friction along the element with the board.
  • the main function of the guide piece 73 is to provide guidance in translation of the elongated element during movement of the free portion 501 and also to avoid tearing of the bonding bond between the end of the element and the viscoelastic layer 602 or between this layer 602 and the shim 72.
  • the elongated element for transmitting bending and / or torsional stresses may be in the form of blades, profiles, rods, rods or tubes in reinforced or unreinforced plastic.
  • the element must be made in a high modulus material chosen from metals and materials composites based on resin and glass fibers, carbon, acrylic, polyester and mixtures of such fibers and as well as among certain high modulus plastics.
  • the device comprises two separate elements which extend longitudinally on the board. It is also part of the invention, to provide a damping device consisting of a single element 50.
  • the element can be arranged laterally offset by relative to the axis I-I 'or also arranged in an aligned manner on the longitudinal axis I-I'. In the latter case, only the damping in longitudinal bending is taken into account. of the board.
  • the damping device comprises two elongated elements 50, 51 consisting of rods spaced laterally from each other and located on either side on the other side of the median axis I-I '.
  • the end portions 500, 510 of the two rods 50, 51 are fixedly connected to the board by a fixed connecting means which holds firmly the ends without the possibility of movement in translation and in rotation.
  • each rod is extended by a portion opposite end 501, 511 connected to the board by a flexible connection means 600 which comprises a housing 7 rigidly connected to the board.
  • the housing includes openings 70a, 70b for allow the introduction of the ends of the free portions 510, 511 in translation and also in rotation.
  • a recess 71 Inside the housing 7 is formed a recess 71 to allow free travel of each rod in translation.
  • the volume is partially or completely filled with a block of material viscoelastic 603. Each end of substantially cylindrical section is thus surrounded by material.
  • the fixed connection means located opposite, is present in the form of a second housing 8 connected to the board by any means such that welding, screwing, gluing, ...
  • the fixed portions of the rods are themselves fixed in the housing 7 by means a layer of glue 80 for example.
  • a protective sheath 9 surrounds the rods between the fixed connection means 8 and the damping box 7.
  • the advantage of such an embodiment is to effectively amortize both the flexural deformations and torsional deformations thanks to a freedom of movement of the end portions 510, 511 both in translation and in rotation.
  • the rods do not necessarily have to be mounted so parallel and can also be of different length for damping asymmetrical for example.
  • the stems may also have a non-circular section, such as a shape flattened, substantially semi-circular or oval, for example. They can also be chosen from solid or hollow section.
  • FIGS. 13 to 17 presents a simplified and more economical case of the invention where the flexible damping means is present in one of the two ends only of each rod, while the other end is connected rigidly to the board. It goes without saying that we can also consider a way identical damping on each side of each rod as in the modes above.
  • a friction damping means which comprises a friction layer having a friction surface covered with a material with a high coefficient of friction.
  • the friction layer can be connected directly or indirectly to the board and slow down movement in translation, and possibly in rotation, of the end portion 501, 510, 511, 521a, 521b, 521c, 521d.
  • the friction layer must be guided in translation and / or rotation by means of protection and guidance of the type of that previous modes.
  • the friction layer can be connected to said end portion and its friction surface is in contact with either the surface top of the board, either of one of the faces of the protective means or of guidance.
  • the use of a flexible damping means working at shearing is however preferable. Indeed, the friction means undergoes a faster wear. Amortization conditions may also vary depending on conditions. For example, if the snow is wet, water can seep in and to intervene between the friction surface of the layer and the surface which undergoes friction (ski or case) and thus modify the damping.
  • the central part 2 of the surfboard shown comprises a damping device 5 connected to said board.
  • the device 5 comprises four elongated elements 50a, 50b, 51a, 51b grouped two by two.
  • Each elongated member is oriented at an angle to the direction longitudinal axis I-I '.
  • the inclination ⁇ of each element by relative to I-I ' is close to 45 °.
  • the elements each have a first end portion 500a, 500b, 510a, 510b connected to the board by a fixed link, as by screws which pass through the element and are anchored in the body of the board.
  • the screws can be replaced by any type of equivalent means such as gluing, welding by vibration or other means.
  • the fixed portions are extended by central portions 502a, 502b, 512a, 512b which have the particularity of not being linked to the board and therefore of being free in translation during the deformation of the central part in torsion.
  • the end portions 501a, 501b are in fact interconnected by a damping means 60 and more precisely by means of a layer in flexible material 600. It is the same for the end portions 511a, 511b connected by the damping means 61 by means of a 'layer of material flexible 601.
  • layers 600, 601 which are preferably layers in viscoelastic material, are subjected to shear and dissipate energy transmitted by the elongated elements.
  • each of the end portions 501a, 501b, 511a, 511b is guided in translation by a protection and guiding means 7 in the form of a housing at through which are made openings 70a, 70b, 70c, 70d for the passage second end portions.
  • end portions 501a, 501b, 511a, 511b are not directly linked to the surface of the board by flexible damping means but are on the contrary free to move by in relation to the board, in particular during bending stresses on the portion central.
  • Such an embodiment therefore provides damping and stability in torsional deformations and retains flexibility and nervousness during flexural deformations.

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  • Vibration Prevention Devices (AREA)
  • Vibration Dampers (AREA)
EP97112898A 1996-08-29 1997-07-26 Planche de surf de neige munie d'un dispositif d'amortissement Withdrawn EP0826397A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9610698 1996-08-29
FR9610698A FR2752743B1 (fr) 1996-08-29 1996-08-29 Planche de surf de neige munie d'un dispositif d'amortissement

Publications (1)

Publication Number Publication Date
EP0826397A1 true EP0826397A1 (fr) 1998-03-04

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EP97112898A Withdrawn EP0826397A1 (fr) 1996-08-29 1997-07-26 Planche de surf de neige munie d'un dispositif d'amortissement

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US (1) US5924707A (ja)
EP (1) EP0826397A1 (ja)
JP (1) JPH10248989A (ja)
FR (1) FR2752743B1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3144038A1 (fr) * 2015-09-21 2017-03-22 Skis Rossignol Dispositif amortisseur destiné à être monté sur une planche de glisse sur neige

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1004144B (el) * 2002-08-16 2003-02-12 Μαρκος Παναγιωτη Χατζηκυριακακης Συστημα εκμηδενισης της στρεβλωσης και ελεγχου της ελαστικοτητας χιονοσανιδας
US20060119055A1 (en) * 2004-12-03 2006-06-08 Xzist Technology, Llc. Adjustable span snowboard stability and dampening system
FR2916983B1 (fr) * 2007-06-06 2010-08-13 Salomon Sa Planche de glisse ou de roulage
US20090144943A1 (en) * 2007-12-11 2009-06-11 Manuel Arranz Del Rosal Interchangeable electronic device clip
US9305120B2 (en) 2011-04-29 2016-04-05 Bryan Marc Failing Sports board configuration
WO2016068498A1 (ko) * 2014-10-30 2016-05-06 주식회사 경동스포츠 텐션조절기능을 갖는 스노우보드

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993008883A1 (en) * 1991-11-01 1993-05-13 Tinkler Michael R Apparatus and method for damping deflections and vibrations in skis
WO1994008669A1 (de) * 1992-10-22 1994-04-28 Baumann & Cie Ag Vorrichtung zum einstellen der vorspannung bzw. durchbiegung bei snowboards oder skis und deren verwendung
FR2713102A1 (fr) * 1993-11-30 1995-06-09 Rossignol Sa Surf sur neige.
EP0682961A1 (fr) * 1994-05-18 1995-11-22 Salomon S.A. Ski alpin muni d'un dispositif de raidissement et/ou d'amortissement à double effet
EP0692284A1 (fr) * 1994-07-13 1996-01-17 Salomon S.A. Dispositif d'amortissement pour ski et ski muni d'un tel dispositif
FR2729086A1 (fr) * 1995-01-11 1996-07-12 Rossignol Sa Surf de neige equipe d'un dispositif d'amortissement des vibrations

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900204A (en) * 1973-06-25 1975-08-19 Robert C Weber Mono-ski
FR2575393A1 (fr) * 1984-12-27 1986-07-04 Rossignol Sa Ski de neige
FR2665081B1 (fr) * 1990-07-30 1992-11-06 Rossignol Sa Surf de neige a caracteristiques asymetriques.
FR2678517B1 (fr) * 1991-07-04 1993-10-15 Salomon Sa Perfectionnement pour dispositif d'amortissement pour ski.
FR2694205B1 (fr) * 1992-07-31 1994-09-23 Salomon Sa Perfectionnement pour dispositif d'amortissement pour ski.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993008883A1 (en) * 1991-11-01 1993-05-13 Tinkler Michael R Apparatus and method for damping deflections and vibrations in skis
WO1994008669A1 (de) * 1992-10-22 1994-04-28 Baumann & Cie Ag Vorrichtung zum einstellen der vorspannung bzw. durchbiegung bei snowboards oder skis und deren verwendung
FR2713102A1 (fr) * 1993-11-30 1995-06-09 Rossignol Sa Surf sur neige.
EP0682961A1 (fr) * 1994-05-18 1995-11-22 Salomon S.A. Ski alpin muni d'un dispositif de raidissement et/ou d'amortissement à double effet
EP0692284A1 (fr) * 1994-07-13 1996-01-17 Salomon S.A. Dispositif d'amortissement pour ski et ski muni d'un tel dispositif
FR2729086A1 (fr) * 1995-01-11 1996-07-12 Rossignol Sa Surf de neige equipe d'un dispositif d'amortissement des vibrations

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3144038A1 (fr) * 2015-09-21 2017-03-22 Skis Rossignol Dispositif amortisseur destiné à être monté sur une planche de glisse sur neige
FR3041267A1 (fr) * 2015-09-21 2017-03-24 Rossignol Sa Dispositif amortisseur destine a etre monte sur une planche de glisse sur neige
US10265604B2 (en) 2015-09-21 2019-04-23 Skis Rossignol Shock absorbing device designed to be mounted to a snow sliding board

Also Published As

Publication number Publication date
FR2752743B1 (fr) 1998-10-30
US5924707A (en) 1999-07-20
JPH10248989A (ja) 1998-09-22
FR2752743A1 (fr) 1998-03-06

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