EP0630591B1 - Chaussure de ski - Google Patents

Chaussure de ski Download PDF

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Publication number
EP0630591B1
EP0630591B1 EP19940810343 EP94810343A EP0630591B1 EP 0630591 B1 EP0630591 B1 EP 0630591B1 EP 19940810343 EP19940810343 EP 19940810343 EP 94810343 A EP94810343 A EP 94810343A EP 0630591 B1 EP0630591 B1 EP 0630591B1
Authority
EP
European Patent Office
Prior art keywords
ski
ski boot
rigid
damping
boot
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.)
Expired - Lifetime
Application number
EP19940810343
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0630591A1 (fr
Inventor
Gilles Marmonier
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.)
Skis Rossignol SA
Original Assignee
Skis Rossignol SA
Rossignol 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
Application filed by Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Publication of EP0630591A1 publication Critical patent/EP0630591A1/fr
Application granted granted Critical
Publication of EP0630591B1 publication Critical patent/EP0630591B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0415—Accessories
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0486—Ski or like boots characterized by the material
    • A43B5/049—Ski or like boots characterized by the material with an upper made of composite material, e.g. fibers or core embedded in a matrix

Definitions

  • the present invention relates to a ski boot made of plastic material comprising damping means intended to dampen the vibrations of the ski transmitted to the skier by the boots.
  • a ski sliding on snow is subjected to shocks of various origins and of all kinds which cause the ski to vibrate.
  • a ski is a relatively rigid element capable of vibrating and having several natural frequencies capable of causing a resonance phenomenon which has the effect of further increasing the amplitude of these vibrations.
  • This vibratory phenomenon has been described in detail in French patent 2,575,393 in the name of the applicant. Studies have made it possible to distinguish essentially three modes of vibration resulting respectively in the presence of two, three and four nodes. The first mode predominates in a special slalom ski, while the third mode predominates in a giant slalom ski.
  • shock absorbers consisting of rubber studs disposed inside the shell of the boot, respectively under the heel and under the forefoot (FR-A-2 663 821 and CH-A-585 530).
  • shock absorbers are certainly effective, as regards the dissipation of vibratory energy but, due to the deformation of the rubber, they reduce the efficiency of the interface formed by the shoe, which has the effect of reducing the sensitivity of the skier to the movements of the ski and the precision of the guide of the skis.
  • These rubber shock absorbers also increase the weight of the shoe.
  • Document FR-A-2 610 797 also discloses a ski boot, the sole area of which cooperates with the support plates of the binding includes elastically deformable inserts located on either side of a rigid rib, in order to absorb shock and vibration while retaining in said zone a certain rigidity for the control of the ski.
  • the support of the boot being however on everything on the side of the sole, these inserts therefore also have the effect of reducing the sensitivity and the precision of the guide of the skis.
  • FR-A-2 684 011 describes a board for sliding on snow, such as skiing or surfing, provided with at least one vibration damper made of viscoelastic materials and a stress plate.
  • This vibration also results in a periodic variation of the distance between the front stop and the heel of the binding, that is to say a vibration of the sole of the boot parallel to the ski.
  • the present invention aims to dampen the vibrations of the shoe itself, that is to say to prevent the transmission of vibrations from the ski to the skier's leg by the boot, but without loss of sensitivity and of precision in guiding the ski.
  • the damping means consist of at least one vibration damping element consisting of at least one viscoelastic material associated with a rigid piece of stress and fixed on the shoe.
  • the rigid part is, for example, a stress plate fixed to a rigid part of the shoe by means of the viscoelastic material.
  • the damping element is connected to the shoe by the viscoelastic material surmounted by a rigid stress plate made of material with high elasticity modulus.
  • the appended drawing represents a nonlimiting example of embodiment of the damping element and examples of localization of such a damping element on a shoe.
  • Figure 1 is a sectional view of a damping element.
  • FIG. 2 represents a shoe, the sole of which is provided with a shock-absorbing element.
  • FIG. 3 represents a second example of location of the damping element.
  • FIG. 4 represents a third example of location of the damping element.
  • FIGS. 5 and 6 represent a fourth embodiment, FIG. 6 being a partial section on VI-VI of FIG. 5.
  • the damping element shown in FIG. 1 consists of a rigid stress plate 1 onto which a layer of viscoelastic material 2 is glued.
  • the thicknesses represented are not the actual thicknesses.
  • the rigid plate 1 advantageously has a modulus of elasticity E greater than 10 4 MPa and a thickness of between 0.5 and 2 mm, for example 1 mm.
  • the material of the rigid plate 1 is chosen from the group comprising aluminum alloys, aluminum-zinc alloys, magnesium known under the name of the trademark ZICRAL from the company CEGEDUR-PECHINEY, thermosetting laminated materials reinforced with glass or carbon fibers, thermoplastic materials reinforced with glass or carbon fibers.
  • the viscoelastic material 2 is, for example, a butyl rubber or a synthetic elastomer, such as NEPURANE PI 2010, these used alone, as a mixture or loaded.
  • the viscoelastic element 2 can consist of an elementary sheet or a stack of several viscoelastic elementary sheets of the same characteristic or of different characteristics. In the latter case, the damping properties of each of the sheets will be offset in temperature for a given vibration frequency or offset in frequency for a given temperature, so as to take account of the variation in the natural frequency of the vibrating part of the shoe depending on the temperature.
  • the thickness of the viscoelatic layer 2 is 1 to 2 mm.
  • FIG. 2 represents a shoe seen from below, the sole 3 of which is provided with a shock-absorbing element 4 as described above, this shock-absorbing element being in the form of a plate bonded by its viscoelastic part 2 to a flat part 3a of the sole 3 set back from the bearing faces of this sole on the ski.
  • FIG. 3 represents a ski boot with four loops, the shell 5 of which is provided with a reinforcement piece 6 in the form of a band extending obliquely from one side to the other of the sole 3 passing over the heel.
  • This reinforcing strip 6 constitutes a vibrating part promoting the transmission of the vibrations of the ski to the skier's leg. It is therefore on this part 6 that is fixed a damping plate 7 similar to the damping element described above.
  • a piece 8 in the form of a hoop which stiffens the upper of the shoe is articulated on the stiffening part 6 .
  • This part also constitutes a vibrating element and it may be advisable to fix a damping element 7 on this part 8 (fig. 4).
  • the shock absorbing element can be a component part of the shoe.
  • the shoe shown is, in appearance, identical to the shoes shown in Figures 3 and 4 (without the VAS plate). However, it differs from it by the reinforcement part 6 designated by 6 ′ in this latter embodiment.
  • the part 6 ' is here very rigid, for example made of metal. It constitutes a stiffening element, opposing the transverse swelling of the shell during the flexing of the shoe. Such a part is therefore suitable for transmitting vibrations.
  • It could be provided with damping plates such as the plate 7, but according to this embodiment, it is the part 6 ′ which itself constitutes a damping element. To this end, it consists of a metal strip 61 coated with a layer of viscoelastic material 62, in the same way as the plate shown in FIG. 1. The material 62 is also in contact with the shell 5.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP19940810343 1993-06-23 1994-06-10 Chaussure de ski Expired - Lifetime EP0630591B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9307628A FR2706741B1 (enrdf_load_stackoverflow) 1993-06-23 1993-06-23
FR9307628 1993-06-23

Publications (2)

Publication Number Publication Date
EP0630591A1 EP0630591A1 (fr) 1994-12-28
EP0630591B1 true EP0630591B1 (fr) 1997-11-26

Family

ID=9448466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940810343 Expired - Lifetime EP0630591B1 (fr) 1993-06-23 1994-06-10 Chaussure de ski

Country Status (3)

Country Link
EP (1) EP0630591B1 (enrdf_load_stackoverflow)
DE (1) DE69406984T2 (enrdf_load_stackoverflow)
FR (1) FR2706741B1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745475B1 (fr) * 1996-03-04 1998-05-07 Salomon Sa Chaussure avec renfort de transmission des efforts

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH585530A5 (en) * 1974-09-02 1977-03-15 Graup Josef Flexible ski boot with rocking hinge - has baseplate with rocking seat for uppers and shock absorbing springs
FR2575393A1 (fr) * 1984-12-27 1986-07-04 Rossignol Sa Ski de neige
FR2610797B1 (fr) * 1987-02-12 1989-05-12 Salomon Sa Chaussure de ski alpin a semelle munie d'un dispositif amortisseur
US5243773A (en) * 1989-12-15 1993-09-14 "Alpina" Tovarna Obutve, P.O. Ski boot with shock-absorbing sole
FR2663821B1 (fr) * 1990-06-27 1994-01-21 Salomon Sa Chaussure de ski a coque rigide et a dispositif amortisseur.
FR2684011B1 (fr) * 1991-11-25 1994-01-07 Rossignol Sa Skis Planche de glisse pourvue d'un dispositif d'amortissement des vibrations.

Also Published As

Publication number Publication date
DE69406984D1 (de) 1998-01-08
DE69406984T2 (de) 1998-06-18
EP0630591A1 (fr) 1994-12-28
FR2706741B1 (enrdf_load_stackoverflow) 1995-10-20
FR2706741A1 (enrdf_load_stackoverflow) 1994-12-30

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