EP2868223A1 - Stick for practising a sliding or walking sport - Google Patents

Stick for practising a sliding or walking sport Download PDF

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Publication number
EP2868223A1
EP2868223A1 EP20140188361 EP14188361A EP2868223A1 EP 2868223 A1 EP2868223 A1 EP 2868223A1 EP 20140188361 EP20140188361 EP 20140188361 EP 14188361 A EP14188361 A EP 14188361A EP 2868223 A1 EP2868223 A1 EP 2868223A1
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EP
European Patent Office
Prior art keywords
tube
handle
stick
stick according
cavity
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.)
Granted
Application number
EP20140188361
Other languages
German (de)
French (fr)
Other versions
EP2868223B1 (en
Inventor
Arnaud Moenne Loccoz
Flavien Foucher
Frédéric Michel
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 EP2868223A1 publication Critical patent/EP2868223A1/en
Application granted granted Critical
Publication of EP2868223B1 publication Critical patent/EP2868223B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A45B9/02—Handles or heads
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C11/00—Accessories for skiing or snowboarding
    • A63C11/22—Ski-sticks
    • A63C11/222—Ski-stick handles or hand-straps
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C11/00—Accessories for skiing or snowboarding
    • A63C11/22—Ski-sticks
    • A63C11/221—Ski-sticks telescopic, e.g. for varying the length or for damping shocks

Definitions

  • the invention relates to the field of sporting goods. It is more specifically a stick for practicing a sport of snow sliding or walking. It relates more specifically to a new handle design equipping the high end of this type of stick.
  • poles are used for alpine skiing in order to facilitate the triggering of turns.
  • the poles are also used for cross-country skiing or cross-country skiing in order to allow the transmission of the forces exerted by the user's upper body towards the snow.
  • the sticks are also used for the practice of Nordic walking, to also allow the transmission of efforts.
  • sticks are also used to provide additional support when climbing on steep terrain, especially downhill, to relieve pressure on the lower limbs.
  • the sticks generally consist of a hollow tube, usually metal and typically aluminum, or a composite material based on glass fibers or carbon.
  • a handle installed at the upper end of the tube.
  • the stick is intended to come into contact with the ground with more or less force, and these impacts result in a transmission of forces and vibrations at the user's hand, through the handle.
  • the handle is mounted on the tube in a sliding connection, allowing the handle to slide on the tube to annoy a spring element.
  • this element which may be a helical spring, a deformable member or a piston absorbs part of the shock generated by the impact of the stick and improves the comfort of the user.
  • the space between the tube and the corresponding recess in the handle is filled with a viscoelastic material, which absorbs the vibrations not only in a direction parallel to the main axis of the tube, but also in directions perpendicular.
  • One of the objectives of the invention is therefore to allow the use of a stick having a shock absorbing capacity and low rotational displacement, for the purpose of better ergonomics.
  • the invention therefore relates to a stick for practicing a sport of gliding or walking, which comprises a tube at the upper end of which is secured a handle.
  • This handle has a displacement capacity relative to the tube in a translation direction parallel to the longitudinal axis of this tube.
  • the handle has an internal cavity, inside which the tube is pivotable along at least one axis substantially perpendicular to the tube, by means of articulation means located in the upper part of the handle.
  • the invention consists in equipping the stick with a hollow handle, the central volume of which is hollowed out.
  • the tube is secured to the handle by hinge means which are disposed within this internal volume, between the middle and the upper part of the handle.
  • the stick according to the invention has a handle which has not only a degree of freedom in translation relative to the tube, but also at least one additional degree of freedom in rotation with respect to an axis which is perpendicular to the tube.
  • the user can keep his wrist and forearm in the same inclination as he moves with respect to the contact point of the stick relative to the ground.
  • the handle can be oriented so that it has a qualified face "front face", determined as the face facing forward for a user who holds the handle with the forearm horizontally.
  • the pivot axis of the tube may be parallel to this front face.
  • the tube can move in the direction of movement of the user relative to the contact point of the stick relative to the ground.
  • the handle may include additional degrees of freedom of movement relative to the tube.
  • the opening of the cavity in the handle can be closed by a compressible part located at the bottom of the handle.
  • the inlet of the cavity within which the tube can move can be closed by a deformable wall which protects the interior of the cavity from the penetration of snow and other impurities.
  • this deformable wall may have a portion of complementary shape to the tube, that is to say in practice a cylindrical region through which the tube.
  • the internal cavity thus defines a void space between the outer wall of the tube and the inner wall of the handle.
  • This cavity extends from the axis of pivoting of the tube relative to the handle to the upper surface of this compressible piece closing the opening.
  • the internal volume of the cavity is defined to allow the pivoting of the tube, and may therefore have a generally conical general shape, or a wider shape encompassing the cone within which the tube can move.
  • the opening of the cavity may have an asymmetry limiting the deflection in pivoting of the tube differently in two perpendicular directions.
  • the shape of the opening of the cavity can be provided so that the pivoting of the tube is of greater amplitude in a forward / backward direction, with respect to a lateral deflection.
  • a similar result can be obtained not by defining the shape of the opening, but by using a compressible piece closing the cavity, which has different compressibility properties according to. the direction of movement of the tube relative to the handle.
  • the compressible piece deforms more when the tube moves towards the front of the handle, than when it moves backwards. In some cases, depending on the practice and ergonomics sought, the opposite configuration can be retained.
  • the hinge means between the handle and the tube may be formed by a pin passing through the handle and the tube being perpendicular to the tube. This configuration allows the pivot axis to translate in the direction parallel to the tube.
  • the pivoting movement of the tube is achieved by a rotation about the axis formed by the pin.
  • This pin is arranged to be able to move in elongate slots, oriented along the overall longitudinal axis of the stick to allow the translation of the handle relative to the tube.
  • the pin may be integral with the handle and be able to move in elongate slots made in the tube.
  • the reverse configuration can also be adopted in which the pin is secured to the tube, and able to move in the lights formed in the handle.
  • the stick may advantageously comprise a damping element interposed between the upper end of the tube and the bottom of the cavity formed in the handle, so as to absorb a portion of the energy of the shocks generated during the impact. stick with the ground.
  • the hinge means may be formed by a connecting piece, whose central portion is integral with the upper end of the tube, and which has an assembly of at least two deformable arms extending radially, the ends of these arms being integral with the handle.
  • connection between the handle and the tube is made by a spoke structure, thus giving the tube a capacity for rotational movements along three axes, combined with a displacement capacity perpendicular to the plane of the spokes.
  • the shape and the number of parts of the connecting arms can be adapted according to the amplitude of the desired movement and the constraints to bear.
  • a number of at least six or eight deformable arms distributed equiangularly allows to obtain a good compromise between solidity of the connection and capacity of displacement.
  • the deformable arms may be embedded in a compressible material which has a stiffness and / or hardness lower than those of the material making up the deformable arms. In this way, the deformable arms are protected from movements of extreme amplitude, and a certain damping can thus be generated during the deformation of the material surrounding them.
  • the central piece can lead to the top of the handle, so that its deformation is visible particularly during a translation of the handle along the main axis of the tube.
  • the figure 1 illustrates the upper part of a stick 1 according to the invention, which mainly comprises a tube 2, at the upper end of which a handle 3 is secured.
  • the shape of this handle 3, in particular its outer contour can be defined for the sake of ergonomics.
  • this handle 3 comprises two recessed areas 4, 5 intended to receive respectively the index and the group consisting of the middle finger, the annular and the little finger of the hand of the user who serves the handle with his hand.
  • These recessed areas 4, 5 are located according to the face which is oriented towards the front (Av) of the user when the latter holds the handle while he has the forearm oriented in front of him horizontally .
  • the handle 3 also has a bulge area 6, located on its rear face, and intended to come into contact with the palm of the palm of the hand.
  • the tube 2 has relative to the handle 3 a degree of freedom in translation relative to its longitudinal axis, and a degree of freedom in pivoting about an axis perpendicular to the tube and to the front / rear direction such that previously defined.
  • the handle 3 comprises a main body 20 having an internal cavity 32 delimited by the inner face 33 of the wall 31.
  • This internal cavity 32 defines a void space between the outer wall of the tube 2 and the inner face 33 of the wall 31 handle 3 .
  • This cavity 32 opens downwards through an opening 35 which is closed by a part 36, which itself passes through the tube 2.
  • the handle has an upper part 39 forming the handle cap.
  • This cap 39 has a cavity 40 made on its underside.
  • This cavity 40 accommodates a compressible pad 42, made of a material of the elastic or viscoelastic type such as rubber or SEBS.
  • the choice of the material of this stud 42 makes it possible to adjust the amplitude of the displacement of the tube as well as its damping.
  • the cap 39 can be secured to the handle by gluing, latching or any other means.
  • the lower face of the stud 42 receives contact with a substantially cylindrical piece 45 and whose lower part 46 is fitted into the top of the tube 2.
  • this part 45 has on its two lateral faces elongate slots 48, whose major axis is oriented parallel to the longitudinal axis of the tube.
  • Both lumens 48 are traversed by a pin 50 which passes through the body 20 of the handle at two bores 51, 52.
  • the handle is articulated in its upper part relative to the tube around the pin 50. It is possible to also provide that the damping pad comes directly in contact with the tube, in which are formed the elongated lights.
  • the internal cavity 32 and in particular its opening 35 facing downwards, has a geometry such that it allows the tube 2 to pivot about the axis of the pin 50 between two extreme positions for which the tube comes into contact almost the wall 31 of the handle.
  • the internal cavity defines a free space between the outer wall of the tube 2 and the inner face 33 of the wall 31 of the handle 3 of a size of the order of a few millimeters, typically 2 to 10 millimeters, preferably between 3 and 6 mm and in practice close to 5 mm.
  • the movement of the tube is possible within the limits of the compressibility of the material of the piece 36.
  • This piece 36 can also make it possible to ensure the tightness of the cavity.
  • this piece 36 has a through opening 37 of substantially cylindrical shape which is traversed by the tube 2.
  • the rod produced corresponding to this first embodiment has the behavior illustrated in FIGS. Figures 4 and 5 .
  • the handle 3 moves by translating along the tube 2 by crushing the compressible part 42.
  • the same behavior can be obtained by replacing the piece 42 by a coil spring or the like, having a stiffness and a desired damping coefficient.
  • the pin 50 integral with the body of the handle 3 moves inside the elongate lumens 48.
  • the tube and the handle rotate in a relative movement illustrated in FIG. figure 5 in a given angulation position. More specifically, the tube 2 pivots with respect to the pin 50 towards the rear of the handle, so that its rear generatrix 55 is close to the rear wall 34 of the body of the handle 3.
  • the axis 7 ' of the tube 2 forms a non-zero angle with the axis 7 that it occupied in the rest position. The tube can thus oscillate around its rest position, towards the front and the back.
  • this displacement is done by deformation of the piece 36, which closes the opening 35 of the bottom of the handle.
  • this piece 35 being optional, it is possible that in its absence, the tube 2 comes into direct contact with the wall 34 of the body of the handle.
  • this part 35 can be defined to ensure progressive compressibility of the part as the movement of the tube 2, with a phenomenon of vibration damping.
  • the materials used can be elastic or even viscoelastic, based for example on compressible foams.
  • This piece 36 may be symmetrical with respect to the tube, or asymmetrical as in the form illustrated in the figures. In this case, the piece 36 has an opening 38 which facilitates its deformation when the tube moves towards the rear of the handle. Conversely, the piece 36 is solid, but compressible, in the zone 39 which is interposed between the front of the tube and the handle. In some cases, it may be useful to position the compressible part not at the lower end of the handle, but at an intermediate level within the cavity.
  • the pin can be secured to the upper end of the tube, and slide in the slots in the body of the handle.
  • FIG. 6 An alternative embodiment is illustrated in Figures 6 to 10 .
  • the connection between the tube 2 and the handle is formed by a connecting piece 100, which cooperates with both the tube 2 and the body 20 of the handle.
  • this piece 100 comprises a central portion 101 of generally cylindrical shape, which has a top portion 102 flush with the top of the handle. This upper portion 102 could be covered with a cap (not shown), while leaving the space necessary for the displacement of the connecting piece 100.
  • the lower part 103 of the portion 101 is fitted into the upper end of the tube 2. In the form illustrated in FIG. figure 6 this portion 103 is embedded in a portion 104 of greater diameter, which comes into contact with the inner wall of the tube 2.
  • the piece 100 comprises a peripheral portion 107 which is secured to the handle by gluing, latching or by any mechanical means.
  • This peripheral portion 107 is connected to the central portion 101 by a set of radial arms 110, which are distributed equiangularly.
  • Each of these arms 110 have a corrugated shape, allowing its deformation, and in particular its elongation or shortening according to the relative movement of the central portion 101 relative to the peripheral portion.
  • the shape of these arms 110 also allows their deformation in torsion, these arms behaving like elastic blades
  • each arm has a first segment 112 directly connected to the central portion 101.
  • This first segment is extended by a second intermediate segment 113 facing outwardly and downwardly.
  • This second segment 113 is extended by a third segment 114 facing outwards and upwards which is connected to the peripheral portion 107 of the part 100.
  • the set of its arms 110 is embedded in a relatively compressible material 109 (not shown in figure 10 ), and rigidity significantly lower than that of the material making up the arms 110 to allow the mobility of the arms 110, this material 109 being characterized by its hardness chosen as an example between 20 and 60 Shore A.
  • the central portion 101 and the arms 110 may be made of a material characterized by a Young's modulus greater than 800 MPa, of the ABS (acrylobutylene styrene), polyamide, polyoxymethylene or polyurethane type, while the material 109 covering the arms, and forming the portion surrounding the lower portion of the central portion 103 of the connecting piece may be made of a material characterized by a Young's modulus of less than 500 MPa of the natural or synthetic rubber, elastomerized thermoplastic type or SEBS.
  • this central piece has a deformation capacity which gives several degrees of freedom to the tube relative to the body of the handle.
  • the empty space in which the tube can evolve is limited upwards by the connecting piece 100 embedded in the compressible material 109 and downwards by the compressible part 136.
  • the arms 110 deform so that the handle 3 slides down the tube 2, bringing out the upper part 102 of the connecting piece, above the level it occupies when the stick is at rest.
  • the stiffness and the damping of this connection are defined by the geometry and the properties of the materials of the arms 110 and of the compressible element 109.
  • the arms 110 deform similarly so that the different segments that compose them are oriented to give a configuration in which the central portion 101 has moved upwards relative to the peripheral portion 107 of the piece link 100.
  • the tube 2 can pivot not only in a front / rear plane, as is shown in FIG. figure 5 for the first embodiment, but also in a corresponding transverse plane for the user to a movement of the handle to the right and left relative to the point of contact of the stick on the ground.
  • this connecting piece 100 also allows a rotation of the tube 2 around its own axis, so that the tube and the handle have relative to each other three degrees of freedom in rotation and a degree of freedom in translation.
  • the handle is connected to the tube by a ball joint connection.
  • the ability and magnitude of pivotal movement of the tube relative to the handle can be adjusted by the shape of the opening in the lower body of the handle, which may be non-circular, but elliptical or ovoid.
  • connecting piece 200 which comprises an upper portion slidably mounted in a housing 203 formed inside the top cap 204 of the handle.
  • This upper portion 201 has a housing 207 accommodating a ball joint 208 integral with the lower part 210 of the connecting piece.
  • This lower part 210 is in turn fitted into the tube 2, thus allowing the tube to pivot in all directions relative to the handle.
  • the stick according to the invention has multiple advantages, in particular that of having at least one degree of freedom allowing the inclination of the handle relative to the tube, in addition to a translational capacity of the handle relative to the tube. As a result, it allows the user to maintain an inclination of his wrist or forearm during his progression. Such a stick also allows the user, when equilibrium with his sticks, to enjoy a certain comfort provided by the freedom of movement of the tube relative to the handle and the corresponding damping.
  • the use of a handle hollowed in its center also allows some lightening of the stick. This lightening can be accentuated by evacuating the wall of the handle.

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  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Rehabilitation Tools (AREA)

Abstract

Bâton (1) pour la pratique d'un sport de glisse ou de la marche, comportant un tube (2) à l'extrémité supérieure duquel est solidarisée une poignée de préhension (3), ladite poignée (3) présentant une capacité de déplacement en translation par rapport audit tube (2) selon une direction parallèle à l'axe longitudinal du tube (2), caractérisé en ce que la poignée (3) présente une cavité interne (32), à l'intérieur de laquelle le tube (2) est apte à pivoter selon au moins un axe sensiblement perpendiculaire audit tube, grâce à des moyens (50, 110) d'articulation situés en partie supérieure de la poignée (3).Stick (1) for practicing a sport of gliding or walking, comprising a tube (2) at the upper end of which is secured a handle (3), said handle (3) having a displacement capacity in translation relative to said tube (2) in a direction parallel to the longitudinal axis of the tube (2), characterized in that the handle (3) has an internal cavity (32), inside which the tube ( 2) is pivotable along at least one axis substantially perpendicular to said tube, by means (50, 110) of articulation located in the upper part of the handle (3).

Description

Domaine techniqueTechnical area

L'invention se rattache au domaine des articles de sport. Elle vise plus précisément un bâton destiné à la pratique d'un sport de glisse sur neige ou de la marche. Elle concerne plus spécifiquement une nouvelle conception de poignée équipant l'extrémité haute de ce type de bâton.The invention relates to the field of sporting goods. It is more specifically a stick for practicing a sport of snow sliding or walking. It relates more specifically to a new handle design equipping the high end of this type of stick.

Techniques antérieuresPrevious techniques

De façon générale, on utilise des bâtons pour la pratique du ski alpin, afin de faciliter le déclenchement de virages. Les bâtons sont également utilisés pour la pratique du ski de fond ou du ski de randonnée afin de permettre la transmission des efforts exercés par le haut du corps de l'utilisateur en direction de la neige.In general, poles are used for alpine skiing in order to facilitate the triggering of turns. The poles are also used for cross-country skiing or cross-country skiing in order to allow the transmission of the forces exerted by the user's upper body towards the snow.

Les bâtons sont également utilisés pour la pratique de la marche nordique, pour permettre également la transmission des efforts. Pour la pratique de la marche de randonnée, les bâtons sont également employés pour conférer des appuis supplémentaires lors de l'évolution sur des terrains escarpés, en particulier en descente, et ce pour soulager les appuis exercés sur les membres inférieurs.The sticks are also used for the practice of Nordic walking, to also allow the transmission of efforts. For walking, sticks are also used to provide additional support when climbing on steep terrain, especially downhill, to relieve pressure on the lower limbs.

Dans un souci de légèreté, les bâtons sont généralement constitués d'un tube creux, généralement métallique et typiquement en aluminium, ou encore en un matériau composite à base de fibres de verre ou de carbone.For the sake of lightness, the sticks generally consist of a hollow tube, usually metal and typically aluminum, or a composite material based on glass fibers or carbon.

Pour faciliter la tenue du bâton, celui-ci comporte une poignée de préhension, installée à l'extrémité supérieure du tube.To facilitate the holding of the stick, it has a handle, installed at the upper end of the tube.

Selon les différentes pratiques évoquées ci-dessus, lors de son utilisation, le bâton est destiné à venir au contact du sol avec plus ou moins de force, et ces impacts se traduisent par une transmission d'efforts et de vibrations au niveau de la main de l'utilisateur, au travers de la poignée de préhension.According to the various practices mentioned above, during use, the stick is intended to come into contact with the ground with more or less force, and these impacts result in a transmission of forces and vibrations at the user's hand, through the handle.

Pour limiter la gêne engendrée par la transmission de ces vibrations, il a déjà été proposé de monter la poignée sur l'extrémité du tube avec une certaine latitude de mouvement. Plus précisément, et comme illustré dans les documents FR 2 185 424 , US 6 254 134 , US 5 295 715 , ou DE 32 47 161 , la poignée est montée sur le tube selon une liaison glissière, permettant à la poignée de coulisser sur le tube, pour contrarier un élément formant ressort.To limit the inconvenience caused by the transmission of these vibrations, it has already been proposed to mount the handle on the end of the tube with a certain latitude of movement. Specifically, and as illustrated in the documents FR 2,185,424 , US 6,254,134 , US 5,295,715 , or DE 32 47 161 , the handle is mounted on the tube in a sliding connection, allowing the handle to slide on the tube to annoy a spring element.

La déformation de cet élément, qui peut être un ressort hélicoïdal, un organe déformable ou un piston permet d'absorber une partie des chocs générés par l'impact du bâton et améliore le confort de l'utilisateur.The deformation of this element, which may be a helical spring, a deformable member or a piston absorbs part of the shock generated by the impact of the stick and improves the comfort of the user.

Dans le document US 2012/0012141 , l'espace situé entre le tube et le logement correspondant creusé dans la poignée est comblé d'un matériau viscoélatique, qui permet d'absorber les vibrations non seulement dans une direction parallèle à l'axe principal du tube, mais également dans des directions perpendiculaires.In the document US 2012/0012141 , the space between the tube and the corresponding recess in the handle is filled with a viscoelastic material, which absorbs the vibrations not only in a direction parallel to the main axis of the tube, but also in directions perpendicular.

Toutefois, pour la pratique de certains sports, lorsque l'utilisateur continue à se déplacer après avoir planté son bâton, la rigidité du tube fait que le bâton pivote par rapport à son point de contact avec le sol, obligeant l'utilisateur à modifier l'inclinaison de son poignet ou de son avant-bras.However, for the practice of certain sports, when the user continues to move after having planted his stick, the rigidity of the tube makes the stick pivots with respect to its point of contact with the ground, forcing the user to modify the inclination of his wrist or forearm.

On conçoit que dans certaines conditions, un tel mouvement n'est pas favorable car l'utilisateur souhaite au contraire conserver une position corporelle la plus stable possible en évitant de faire fonctionner certaines de ses articulations, et en particulier celles du poignet.It is conceivable that under certain conditions, such a movement is not favorable because the user wishes on the contrary to maintain a body position as stable as possible by avoiding to operate some of its joints, and in particular those of the wrist.

Exposé de l'inventionPresentation of the invention

Un des objectifs de l'invention est donc de permettre l'utilisation d'un bâton présentant une capacité d'absorption des chocs et des faibles déplacements en rotation, dans le but d'une meilleure ergonomie.One of the objectives of the invention is therefore to allow the use of a stick having a shock absorbing capacity and low rotational displacement, for the purpose of better ergonomics.

L'invention concerne donc un bâton pour la pratique d'un sport de glisse ou de la marche, qui comporte un tube à l'extrémité supérieure duquel est solidarisée une poignée de préhension. Cette poignée de préhension présente une capacité de déplacement par rapport au tube selon une translation de direction parallèle à l'axe longitudinal de ce tube.The invention therefore relates to a stick for practicing a sport of gliding or walking, which comprises a tube at the upper end of which is secured a handle. This handle has a displacement capacity relative to the tube in a translation direction parallel to the longitudinal axis of this tube.

Conformément à l'invention, la poignée présente une cavité interne, à l'intérieur de laquelle le tube est apte à pivoter selon au moins un axe sensiblement perpendiculaire au tube, grâce à des moyens d'articulation situés en partie supérieure de la poignée.According to the invention, the handle has an internal cavity, inside which the tube is pivotable along at least one axis substantially perpendicular to the tube, by means of articulation means located in the upper part of the handle.

Autrement dit, l'invention consiste à équiper le bâton d'une poignée creuse, dont le volume central est évidé. Le tube est solidaire de la poignée par des moyens d'articulation qui sont disposés à l'intérieur de ce volume interne, entre le milieu et la partie haute de la poignée. De la sorte, lorsque la pointe du bâton est plantée dans le sol, et que l'utilisateur continue son déplacement, la poignée peut rester à une inclinaison constante par rapport au sol et le tube du bâton pivote par rapport à la poignée.In other words, the invention consists in equipping the stick with a hollow handle, the central volume of which is hollowed out. The tube is secured to the handle by hinge means which are disposed within this internal volume, between the middle and the upper part of the handle. In this way, when the tip of the stick is planted in the ground, and the user continues its movement, the handle can remain at a constant inclination relative to the ground and the stick tube pivots relative to the handle.

En d'autres termes, le bâton conforme à l'invention présente une poignée qui présente non seulement un degré de liberté en translation par rapport au tube, mais également au moins un degré de liberté supplémentaire en rotation par rapport à un axe qui est perpendiculaire au tube.In other words, the stick according to the invention has a handle which has not only a degree of freedom in translation relative to the tube, but also at least one additional degree of freedom in rotation with respect to an axis which is perpendicular to the tube.

De la sorte, l'utilisateur peut conserver son poignet et son avant-bras dans la même inclinaison pendant qu'il se déplace par rapport au point de contact du bâton par rapport au sol.In this way, the user can keep his wrist and forearm in the same inclination as he moves with respect to the contact point of the stick relative to the ground.

Différentes configurations de l'articulation entre le tube et la poignée sont possibles, en fonction des exigences d'ergonomie souhaitées.Different configurations of the articulation between the tube and the handle are possible, depending on the desired ergonomic requirements.

Ainsi, dans une configuration particulière, la poignée peut être orientée de telle sorte qu'elle présente une face qualifiée « de face avant », déterminée comme la face orientée vers l'avant pour un utilisateur qui tient la poignée avec l'avant-bras à l'horizontale.Thus, in a particular configuration, the handle can be oriented so that it has a qualified face "front face", determined as the face facing forward for a user who holds the handle with the forearm horizontally.

Dans ce cas, il peut être avantageux que l'axe de pivotement du tube soit parallèle à cette face avant.In this case, it may be advantageous for the pivot axis of the tube to be parallel to this front face.

Autrement dit, parmi les degrés de liberté de la poignée par rapport au tube, on prévoira que le tube puisse se mouvoir selon la direction de déplacement de l'utilisateur par rapport au point de contact du bâton par rapport au sol.In other words, among the degrees of freedom of the handle relative to the tube, it will be provided that the tube can move in the direction of movement of the user relative to the contact point of the stick relative to the ground.

Bien entendu, la poignée peut comporter des degrés de liberté supplémentaires de déplacement par rapport au tube.Of course, the handle may include additional degrees of freedom of movement relative to the tube.

En pratique, l'ouverture de la cavité ménagée dans la poignée peut être obturée par une pièce compressible située en bas de la poignée. Autrement dit, l'entrée de la cavité à l'intérieur de laquelle le tube peut se déplacer peut être fermée par une paroi déformable qui protège l'intérieur de la cavité de la pénétration de neige et toutes autres impuretés.In practice, the opening of the cavity in the handle can be closed by a compressible part located at the bottom of the handle. In other words, the inlet of the cavity within which the tube can move can be closed by a deformable wall which protects the interior of the cavity from the penetration of snow and other impurities.

Dans certains cas, cette paroi déformable peut présenter une portion de forme complémentaire au tube, c'est-à-dire en pratique une région cylindrique traversée par le tube.In some cases, this deformable wall may have a portion of complementary shape to the tube, that is to say in practice a cylindrical region through which the tube.

Ainsi, la cavité interne définit donc un espace vide entre la paroi externe du tube et la paroi interne de la poignée. Cette cavité s'étend depuis l'axe de pivotement du tube par rapport à la poignée jusqu'à la surface supérieure de cette pièce compressible obturant l'ouverture. Le volume interne de la cavité est défini pour permettre le pivotement du tube, et peut donc présenter une forme générale sensiblement conique, ou une forme plus élargie englobant le cône à l'intérieur duquel le tube peut se déplacer.Thus, the internal cavity thus defines a void space between the outer wall of the tube and the inner wall of the handle. This cavity extends from the axis of pivoting of the tube relative to the handle to the upper surface of this compressible piece closing the opening. The internal volume of the cavity is defined to allow the pivoting of the tube, and may therefore have a generally conical general shape, or a wider shape encompassing the cone within which the tube can move.

En pratique, l'ouverture de la cavité peut présenter une asymétrie limitant le débattement en pivotement du tube de manière différente selon deux directions perpendiculaires. Autrement dit, la forme de l'ouverture de la cavité peut être prévue pour que le pivotement du tube soit de plus grande amplitude dans une direction avant/arrière, par rapport à un débattement latéral.In practice, the opening of the cavity may have an asymmetry limiting the deflection in pivoting of the tube differently in two perpendicular directions. In other words, the shape of the opening of the cavity can be provided so that the pivoting of the tube is of greater amplitude in a forward / backward direction, with respect to a lateral deflection.

Un résultat analogue peut être obtenu non pas en définissant la forme de l'ouverture, mais en utilisant une pièce compressible obturant la cavité, qui présente des propriétés de compressibilité différentes selon. la direction de déplacement du tube par rapport à la poignée. Ainsi, on peut prévoir que la pièce compressible se déforme plus lorsque le tube se déplace vers l'avant de la poignée, que lorsque lorsqu'il se déplace vers l'arrière. Dans certains cas, en fonction de la pratique et de l'ergonomie recherchée, la configuration opposée peut être retenue.A similar result can be obtained not by defining the shape of the opening, but by using a compressible piece closing the cavity, which has different compressibility properties according to. the direction of movement of the tube relative to the handle. Thus, it can be expected that the compressible piece deforms more when the tube moves towards the front of the handle, than when it moves backwards. In some cases, depending on the practice and ergonomics sought, the opposite configuration can be retained.

Différentes géométries peuvent être adoptées pour combiner à la fois une translation du tube par rapport à la poignée avec des mouvements de pivotement selon un ou plusieurs axes.Different geometries can be adopted to combine both a translation of the tube relative to the handle with pivoting movements along one or more axes.

Ainsi, dans une première réalisation, les moyens d'articulation entre la poignée et le tube peuvent être formés par une goupille traversant la poignée et le tube en étant perpendiculaire au tube. Cette configuration permet à l'axe de pivotement de se translater dans la direction parallèle au tube.Thus, in a first embodiment, the hinge means between the handle and the tube may be formed by a pin passing through the handle and the tube being perpendicular to the tube. This configuration allows the pivot axis to translate in the direction parallel to the tube.

De cette manière, le mouvement de pivotement du tube est réalisé par une rotation autour de l'axe formé par la goupille. Cette goupille est agencée pour pouvoir se déplacer dans des lumières allongées, orientées selon l'axe longitudinal global du bâton pour autoriser la translation de la poignée par rapport au tube.In this way, the pivoting movement of the tube is achieved by a rotation about the axis formed by the pin. This pin is arranged to be able to move in elongate slots, oriented along the overall longitudinal axis of the stick to allow the translation of the handle relative to the tube.

Dans une première forme de réalisation, la goupille peut être solidaire de la poignée et être apte à se déplacer dans des lumières allongées réalisées dans le tube. La configuration inverse peut également être adoptée dans laquelle la goupille est solidarisée au tube, et apte à se déplacer dans des lumières formées dans la poignée.In a first embodiment, the pin may be integral with the handle and be able to move in elongate slots made in the tube. The reverse configuration can also be adopted in which the pin is secured to the tube, and able to move in the lights formed in the handle.

Dans ces différentes configurations, le bâton peut avantageusement comporter un élément amortisseur interposé entre l'extrémité supérieure du tube et le fond de la cavité formée dans la poignée, de manière à absorber une partie de l'énergie des chocs générés lors de l'impact du bâton avec le sol.In these different configurations, the stick may advantageously comprise a damping element interposed between the upper end of the tube and the bottom of the cavity formed in the handle, so as to absorb a portion of the energy of the shocks generated during the impact. stick with the ground.

Dans une autre forme de réalisation, les moyens d'articulation peuvent être formés par une pièce de liaison, dont la portion centrale est solidaire de l'extrémité supérieure du tube, et qui présente un ensemble d'au moins deux bras déformables s'étendant radialement, les extrémités de ces bras étant solidaires de la poignée.In another embodiment, the hinge means may be formed by a connecting piece, whose central portion is integral with the upper end of the tube, and which has an assembly of at least two deformable arms extending radially, the ends of these arms being integral with the handle.

Autrement dit, la liaison entre la poignée et le tube est réalisée par une structure à rayons, conférant ainsi au tube une capacité de mouvements en rotation selon trois axes, combinés à une capacité en déplacement perpendiculairement au plan des rayons.In other words, the connection between the handle and the tube is made by a spoke structure, thus giving the tube a capacity for rotational movements along three axes, combined with a displacement capacity perpendicular to the plane of the spokes.

En pratique, la forme et le nombre de pièces des bras de liaisons peut être adaptés en fonction de l'amplitude du mouvement souhaité et des contraintes à supporter. Un nombre d'au moins six ou huit bras déformables répartis équiangulairement permet d'obtenir un bon compromis entre solidité de la liaison et capacité de déplacement.In practice, the shape and the number of parts of the connecting arms can be adapted according to the amplitude of the desired movement and the constraints to bear. A number of at least six or eight deformable arms distributed equiangularly allows to obtain a good compromise between solidity of the connection and capacity of displacement.

Dans une forme particulière de réalisation, les bras déformables peuvent être noyés dans un matériau compressible qui présente une rigidité et/ou une dureté plus faibles que celles du matériau composant les bras déformables. De cette manière, les bras déformables sont protégés de mouvements d'amplitude extrême, et un certain amortissement peut ainsi être généré lors de la déformation du matériau les entourant.In a particular embodiment, the deformable arms may be embedded in a compressible material which has a stiffness and / or hardness lower than those of the material making up the deformable arms. In this way, the deformable arms are protected from movements of extreme amplitude, and a certain damping can thus be generated during the deformation of the material surrounding them.

Selon une forme particulière de réalisation, la pièce centrale peut déboucher sur le haut de la poignée, de manière à ce que sa déformation soit visible en particulier lors d'une translation de la poignée le long de l'axe principal du tube.According to a particular embodiment, the central piece can lead to the top of the handle, so that its deformation is visible particularly during a translation of the handle along the main axis of the tube.

Description sommaire des figuresBrief description of the figures

La manière de réaliser l'invention, ainsi que les avantages qui en découlent ressortiront bien de la description des modes de réalisation qui suivent, à l'appui des figures annexées dans lesquelles :

  • La figure 1 est une vue de côté de la partie haute d'un bâton, sur laquelle sont définis les plans A-A' et B-B' correspondant respectivement aux plans avant-arrière et gauche-droite pour un utilisateur ayant en main le bâton.
  • La figure 2 est une vue en coupe longitudinale avant-arrière de la partie haute d'un bâton selon un premier mode de réalisation de l'invention.
  • La figure 3 est une vue en coupe longitudinale gauche-droite du bâton de la figure 2.
  • La figure 4 est une vue en coupe longitudinale avant-arrière du bâton de la figure 2 dans lequel le tube a suivi un déplacement de translation longitudinal.
  • La figure 5 est une vue en coupe avant-arrière du bâton de la figure 2 dans laquelle le tube a subi un mouvement de pivotement, vers l'arrière.
  • La figure 6 est une vue en coupe longitudinale avant-arrière d'un bâton selon un deuxième mode de réalisation de l'invention.
  • La figure 7 est une vue en coupe longitudinale gauche-droite du bâton de la figure 6.
  • La figure 8 est une vue en coupe longitudinale avant-arrière du bâton de la figure 6, dans lequel le tube a subi un mouvement de translation longitudinal.
  • La figure 9 est une vue en coupe longitudinale avant-arrière du bâton de la figure 6, dans lequel le tube a subi un mouvement de pivotement vers l'arrière.
  • La figure 10 est une vue en perspective sommaire d'une partie de la pièce située en partie haute du bâton de la figure 6.
  • La figure 11 est une vue en coupe longitudinale avant-arrière de la partie haute d'un bâton selon un troisième mode de réalisation.
The manner of carrying out the invention, as well as the advantages which result therefrom, will emerge from the description of the embodiments which follow, in support of the appended figures in which:
  • The figure 1 is a side view of the upper part of a stick, on which are defined the planes AA 'and BB' respectively corresponding to the front-back and left-right planes for a user having the stick in hand.
  • The figure 2 is a longitudinal sectional front-back view of the upper part of a stick according to a first embodiment of the invention.
  • The figure 3 is a left-right longitudinal sectional view of the staff of the figure 2 .
  • The figure 4 is a longitudinal sectional front-back view of the stick of the figure 2 wherein the tube has followed a longitudinal translational movement.
  • The figure 5 is a front-back sectional view of the stick of the figure 2 wherein the tube has been pivoted rearwardly.
  • The figure 6 is a longitudinal sectional front-back view of a stick according to a second embodiment of the invention.
  • The figure 7 is a left-right longitudinal sectional view of the staff of the figure 6 .
  • The figure 8 is a longitudinal sectional front-back view of the stick of the figure 6 wherein the tube has been longitudinally translated.
  • The figure 9 is a longitudinal sectional front-back view of the stick of the figure 6 wherein the tube has been pivoted backwards.
  • The figure 10 is a brief perspective view of a part of the room at the top of the stick of the figure 6 .
  • The figure 11 is a longitudinal sectional front-back view of the upper part of a stick according to a third embodiment.

Description détailléedetailed description

La figure 1 illustre la partie haute d'un bâton 1 conforme à l'invention, qui comporte principalement un tube 2, à l'extrémité supérieure duquel une poignée de préhension 3 est solidarisée. La forme de cette poignée 3, en particulier son contour extérieur peut être défini dans un but d'ergonomie. Dans la forme illustrée, cette poignée 3 comporte deux zones en creux 4, 5 destinées à recevoir respectivement l'index et le groupe constitué du majeur, de l'annulaire et de l'auriculaire de la main de l'utilisateur qui sert la poignée avec sa main. Ces zones en creux 4, 5 sont situées selon la face qui est orientée vers l'avant (Av) de l'utilisateur lorsque celui-ci tient la poignée alors qu'il a l'avant-bras orienté devant lui à l'horizontale.The figure 1 illustrates the upper part of a stick 1 according to the invention, which mainly comprises a tube 2, at the upper end of which a handle 3 is secured. The shape of this handle 3, in particular its outer contour can be defined for the sake of ergonomics. In the form shown, this handle 3 comprises two recessed areas 4, 5 intended to receive respectively the index and the group consisting of the middle finger, the annular and the little finger of the hand of the user who serves the handle with his hand. These recessed areas 4, 5 are located according to the face which is oriented towards the front (Av) of the user when the latter holds the handle while he has the forearm oriented in front of him horizontally .

La poignée 3 comporte également une zone renflée 6, située sur sa face arrière, et destinée à venir au contact du creux de la paume de la main.The handle 3 also has a bulge area 6, located on its rear face, and intended to come into contact with the palm of the palm of the hand.

Dans la forme de réalisation illustrée aux figures 2 à 5, le tube 2 possède par rapport à la poignée 3 un degré de liberté en translation par rapport à son axe longitudinal, ainsi qu'un degré de liberté en pivotement autour d'un axe perpendiculaire au tube et à la direction avant/arrière telle que définie précédemment.In the embodiment illustrated at Figures 2 to 5 , the tube 2 has relative to the handle 3 a degree of freedom in translation relative to its longitudinal axis, and a degree of freedom in pivoting about an axis perpendicular to the tube and to the front / rear direction such that previously defined.

Plus précisément, comme illustré à la figure 2, la poignée 3 comporte un corps principal 20 possédant une cavité interne 32 délimitée par la face interne 33 de la paroi 31. Cette cavité interne 32 définit un espace vide entre la paroi externe du tube 2 et la face interne 33 de la paroi 31 poignée 3.Cette cavité 32 débouche vers le bas par une ouverture 35 qui est obturée par une pièce 36, qui elle-même est traversée par le tube 2. More specifically, as illustrated in figure 2 , the handle 3 comprises a main body 20 having an internal cavity 32 delimited by the inner face 33 of the wall 31. This internal cavity 32 defines a void space between the outer wall of the tube 2 and the inner face 33 of the wall 31 handle 3 .This cavity 32 opens downwards through an opening 35 which is closed by a part 36, which itself passes through the tube 2.

En partie haute, la poignée comporte une pièce supérieure 39 formant le capuchon de poignée. Ce capuchon 39 présente une cavité 40 réalisée sur sa face inférieure. Cette cavité 40 accueille un plot compressible 42, réalisé en un matériau du type élastique ou viscoélastique tel que le caoutchouc ou le SEBS. Le choix du matériau de ce plot 42 permet de régler l'amplitude du déplacement du tube ainsi que son amortissement. Le capuchon 39 peut être solidarisé à la poignée par collage, encliquetage ou tout autre moyen. La face inférieure du plot 42 reçoit le contact d'une pièce 45, sensiblement cylindrique, et dont la partie inférieure 46 est emmanchée dans le haut du tube 2. In the upper part, the handle has an upper part 39 forming the handle cap. This cap 39 has a cavity 40 made on its underside. This cavity 40 accommodates a compressible pad 42, made of a material of the elastic or viscoelastic type such as rubber or SEBS. The choice of the material of this stud 42 makes it possible to adjust the amplitude of the displacement of the tube as well as its damping. The cap 39 can be secured to the handle by gluing, latching or any other means. The lower face of the stud 42 receives contact with a substantially cylindrical piece 45 and whose lower part 46 is fitted into the top of the tube 2.

Plus précisément, cette pièce 45 présente sur ses deux faces latérales des lumières allongées 48, dont le grand axe est orienté parallèlement à l'axe longitudinal du tube.More precisely, this part 45 has on its two lateral faces elongate slots 48, whose major axis is oriented parallel to the longitudinal axis of the tube.

Les deux lumières 48 sont toutes deux traversées par une goupille 50 qui traverse le corps 20 de la poignée au niveau de deux perçages 51, 52. La poignée est donc articulée dans sa partie supérieure par rapport au tube autour de cette goupille 50. On peut également prévoir que le plot amortissant vienne directement au contact du tube, dans lequel sont réalisées les lumières allongées.Both lumens 48 are traversed by a pin 50 which passes through the body 20 of the handle at two bores 51, 52. The handle is articulated in its upper part relative to the tube around the pin 50. It is possible to also provide that the damping pad comes directly in contact with the tube, in which are formed the elongated lights.

La cavité interne 32, et en particulier son ouverture 35 orientée vers le bas présentent une géométrie telle qu'elle permet le pivotement du tube 2 autour de l'axe de la goupille 50 entre deux positions extrêmes pour lesquelles le tube vient quasiment au contact de la paroi 31 de la poignée. La cavité interne définit un espace libre entre la paroi externe du tube 2 et la face interne 33 de la paroi 31 de la poignée 3 d'une dimension de l'ordre de quelques millimètres, typiquement de 2 à 10 millimètres, préférentiellement entre 3 et 6 mm et en pratique voisine de 5 mm.The internal cavity 32, and in particular its opening 35 facing downwards, has a geometry such that it allows the tube 2 to pivot about the axis of the pin 50 between two extreme positions for which the tube comes into contact almost the wall 31 of the handle. The internal cavity defines a free space between the outer wall of the tube 2 and the inner face 33 of the wall 31 of the handle 3 of a size of the order of a few millimeters, typically 2 to 10 millimeters, preferably between 3 and 6 mm and in practice close to 5 mm.

Dans le cas particulier illustré où l'ouverture 35 est obturée par une pièce compressible 36, le mouvement du tube est possible dans les limites de la compressibilité du matériau de la pièce 36. Cette pièce 36 peut aussi permettre d'assurer l'étanchéité de la cavité.In the particular case illustrated where the opening 35 is closed by a compressible part 36, the movement of the tube is possible within the limits of the compressibility of the material of the piece 36. This piece 36 can also make it possible to ensure the tightness of the cavity.

Ainsi, dans la forme illustrée à la figure 2, cette pièce 36 présente une ouverture traversante 37, de forme sensiblement cylindrique qui est traversée par le tube 2. So, in the form illustrated in the figure 2 this piece 36 has a through opening 37 of substantially cylindrical shape which is traversed by the tube 2.

En fonctionnement, le bâton réalisé correspondant à ce premier mode de réalisation présente le comportement illustré aux figures 4 et 5.In operation, the rod produced corresponding to this first embodiment has the behavior illustrated in FIGS. Figures 4 and 5 .

Plus précisément, comme illustré à la figure 4, dans le cas d'un choc exercé parallèlement à l'axe du bâton, la poignée 3 se déplace en se translatant le long du tube 2 par écrasement de la pièce compressible 42. Bien entendu, le même comportement peut être obtenu en remplaçant la pièce 42 par un ressort hélicoïdal ou analogue, présentant une raideur et un coefficient d'amortissement souhaité.More specifically, as illustrated in figure 4 in the case of a shock exerted parallel to the axis of the stick, the handle 3 moves by translating along the tube 2 by crushing the compressible part 42. Of course, the same behavior can be obtained by replacing the piece 42 by a coil spring or the like, having a stiffness and a desired damping coefficient.

Lors du déplacement de la poignée 3 le long du tube 2, la goupille 50 solidaire du corps de la poignée 3 se déplace à l'intérieur des lumières allongées 48. When moving the handle 3 along the tube 2, the pin 50 integral with the body of the handle 3 moves inside the elongate lumens 48.

Dans le cas où l'extrémité inférieure du bâton est plantée dans le sol, et que la main de l'utilisateur continue à se déplacer, le tube et la poignée pivotent selon un mouvement relatif illustré à la figure 5 dans une position d'angulation donnée. Plus précisément, le tube 2 pivote par rapport à la goupille 50 vers l'arrière de la poignée, de telle sorte que sa génératrice arrière 55 se rapproche de la paroi arrière 34 du corps de la poignée 3. Ainsi, l'axe 7' du tube 2 forme un angle non nul avec l'axe 7 qu'il occupait dans la position de repos. Le tube peut donc osciller autour de sa position de repos, vers l'avant et l'arrière.In the case where the lower end of the stick is planted in the ground, and the hand of the user continues to move, the tube and the handle rotate in a relative movement illustrated in FIG. figure 5 in a given angulation position. More specifically, the tube 2 pivots with respect to the pin 50 towards the rear of the handle, so that its rear generatrix 55 is close to the rear wall 34 of the body of the handle 3. Thus, the axis 7 ' of the tube 2 forms a non-zero angle with the axis 7 that it occupied in the rest position. The tube can thus oscillate around its rest position, towards the front and the back.

Dans la forme illustrée à la figure 5, ce déplacement se fait par déformation de la pièce 36, qui obture l'ouverture 35 du bas de la poignée. Toutefois, cette pièce 35 étant optionnelle, il est possible qu'en son absence, le tube 2 vienne au contact direct de la paroi 34 du corps de la poignée.In the form illustrated in figure 5 this displacement is done by deformation of the piece 36, which closes the opening 35 of the bottom of the handle. However, this piece 35 being optional, it is possible that in its absence, the tube 2 comes into direct contact with the wall 34 of the body of the handle.

De même, les propriétés mécaniques de cette pièce 35, peuvent être définies pour assurer une compressibilité progressive de la pièce au fur et à mesure du mouvement du tube 2, avec ainsi un phénomène d'amortissement des vibrations. Les matériaux employés peuvent être élastiques voire viscoélastiques, à base par exemple de mousses compressibles. Cette pièce 36 peut être symétrique par rapport au tube, ou asymétrique comme dans la forme illustrée aux figures. Dans ce cas, la pièce 36 présente une ouverture 38 qui facilite sa déformation lorsque le tube se déplace vers l'arrière de la poignée. A l'inverse, la pièce 36 est pleine, mais compressible, dans la zone 39 qui est interposée entre l'avant du tube et la poignée. Dans certains cas, il peut être utile de positionner la pièce compressible non pas à l'extrémité basse de la poignée, mais à un niveau intermédiaire à l'intérieur de la cavité.Similarly, the mechanical properties of this part 35 can be defined to ensure progressive compressibility of the part as the movement of the tube 2, with a phenomenon of vibration damping. The materials used can be elastic or even viscoelastic, based for example on compressible foams. This piece 36 may be symmetrical with respect to the tube, or asymmetrical as in the form illustrated in the figures. In this case, the piece 36 has an opening 38 which facilitates its deformation when the tube moves towards the rear of the handle. Conversely, the piece 36 is solid, but compressible, in the zone 39 which is interposed between the front of the tube and the handle. In some cases, it may be useful to position the compressible part not at the lower end of the handle, but at an intermediate level within the cavity.

Parmi les variantes envisagées, il est bien entendu possible d'intervertir les positions relatives de la goupille et des lumières allongées. Ainsi, la goupille peut être solidaire de l'extrémité haute du tube, et coulisser dans des lumières réalisées dans le corps de la poignée.Among the variants envisaged, it is of course possible to invert the relative positions of the pin and elongated lights. Thus, the pin can be secured to the upper end of the tube, and slide in the slots in the body of the handle.

Un mode de réalisation alternatif est illustré aux figures 6 à 10. Dans ce cas, et comme illustré à la figure 6, la liaison entre le tube 2 et la poignée est réalisée par une pièce de liaison 100, qui coopère à la fois avec le tube 2 et le corps 20 de la poignée. Plus précisément, cette pièce 100 comprend une portion centrale 101 de forme globalement cylindrique, qui possède une partie haute 102 affleurant sur le dessus de la poignée. Cette partie haute 102 pourrait être recouverte d'un capuchon (non représenté), tout en laissant l'espace nécessaire au déplacement de la pièce de liaison 100. An alternative embodiment is illustrated in Figures 6 to 10 . In this case, and as shown in figure 6 , the connection between the tube 2 and the handle is formed by a connecting piece 100, which cooperates with both the tube 2 and the body 20 of the handle. More specifically, this piece 100 comprises a central portion 101 of generally cylindrical shape, which has a top portion 102 flush with the top of the handle. This upper portion 102 could be covered with a cap (not shown), while leaving the space necessary for the displacement of the connecting piece 100.

La partie basse 103 de la portion 101 est emmanchée dans l'extrémité haute du tube 2. Dans la forme illustrée à la figure 6, cette portion 103 est noyée dans une portion 104 de diamètre supérieur, qui vient au contact de la paroi interne du tube 2. The lower part 103 of the portion 101 is fitted into the upper end of the tube 2. In the form illustrated in FIG. figure 6 this portion 103 is embedded in a portion 104 of greater diameter, which comes into contact with the inner wall of the tube 2.

La pièce 100 comporte une portion périphérique 107 qui est solidarisée à la poignée par collage, encliquetage ou par tout moyen mécanique. Cette portion périphérique 107 est reliée à la portion centrale 101 par un ensemble de bras radiaux 110, qui sont répartis équiangulairement. Chacun de ces bras 110 présentent une forme ondulée, permettant sa déformation, et en particulier son allongement ou son raccourcissement en fonction du mouvement relatif de la partie centrale 101 par rapport à la portion périphérique. La forme de ces bras 110 autorise également leur déformation en torsion, ces bras se comportant comme des lames élastiquesThe piece 100 comprises a peripheral portion 107 which is secured to the handle by gluing, latching or by any mechanical means. This peripheral portion 107 is connected to the central portion 101 by a set of radial arms 110, which are distributed equiangularly. Each of these arms 110 have a corrugated shape, allowing its deformation, and in particular its elongation or shortening according to the relative movement of the central portion 101 relative to the peripheral portion. The shape of these arms 110 also allows their deformation in torsion, these arms behaving like elastic blades

Comme illustré à la figure 10, chaque bras présente un premier segment 112 directement relié à la portion centrale 101. Ce premier segment se prolonge par un second segment intermédiaire 113 orienté vers l'extérieur et vers le bas. Ce deuxième segment 113 se prolonge par un troisième segment 114 orienté vers l'extérieur et vers le haut qui est lui, connecté à la portion périphérique 107 de la pièce 100. L'ensemble de ses bras 110 est noyé dans un matériau 109 relativement compressible (non représenté à la figure 10), et de rigidité nettement inférieure à celle du matériau composant les bras 110 pour permettre la mobilité des bras 110, ce matériau 109 étant caractérisé par sa dureté choisie à titre d'exemple entre 20 et 60 Shore A.As illustrated in figure 10 each arm has a first segment 112 directly connected to the central portion 101. This first segment is extended by a second intermediate segment 113 facing outwardly and downwardly. This second segment 113 is extended by a third segment 114 facing outwards and upwards which is connected to the peripheral portion 107 of the part 100. The set of its arms 110 is embedded in a relatively compressible material 109 (not shown in figure 10 ), and rigidity significantly lower than that of the material making up the arms 110 to allow the mobility of the arms 110, this material 109 being characterized by its hardness chosen as an example between 20 and 60 Shore A.

A titre d'exemple, la partie centrale 101 et les bras 110 peuvent être réalisés en un matériau caractérisé par un module d'Young supérieur à 800 MPa, du type ABS (acrylobutylène styrène), polyamide, polyoxyméthylène ou polyuréthanne, alors que le matériau 109 recouvrant les bras, et formant la portion entourant la partie basse de la portion centrale 103 de la pièce de liaison peut être réalisée en un matériau caractérisé par un module d'Young inférieur à 500 MPa du type caoutchouc naturel ou synthétique, thermoplastique élastomérisé ou SEBS.By way of example, the central portion 101 and the arms 110 may be made of a material characterized by a Young's modulus greater than 800 MPa, of the ABS (acrylobutylene styrene), polyamide, polyoxymethylene or polyurethane type, while the material 109 covering the arms, and forming the portion surrounding the lower portion of the central portion 103 of the connecting piece may be made of a material characterized by a Young's modulus of less than 500 MPa of the natural or synthetic rubber, elastomerized thermoplastic type or SEBS.

Ainsi, cette pièce centrale présente une capacité de déformation qui confère plusieurs degrés de liberté au tube par rapport au corps de la poignée. L'espace vide dans lequel le tube peut évoluer est limité vers le haut par la pièce de liaison 100 noyée dans le matériau compressible 109 et vers le bas par la pièce compressible 136. Thus, this central piece has a deformation capacity which gives several degrees of freedom to the tube relative to the body of the handle. The empty space in which the tube can evolve is limited upwards by the connecting piece 100 embedded in the compressible material 109 and downwards by the compressible part 136.

Ainsi, et comme illustré à la figure 8, lorsque le bâton subit un choc vertical, c'est-à-dire parallèlement à l'axe principal du tube, les bras 110 se déforment de telle sorte que la poignée 3 coulisse vers le bas du tube 2, faisant ressortir la partie haute 102 de la pièce de liaison, au-dessus du niveau qu'elle occupe lorsque le bâton est au repos. La raideur et l'amortissement de cette liaison sont définis par la géométrie et les propriétés des matériaux des bras 110 et de l'élément compressible 109. So, and as illustrated in figure 8 when the stick is shocked vertically, that is to say parallel to the main axis of the tube, the arms 110 deform so that the handle 3 slides down the tube 2, bringing out the upper part 102 of the connecting piece, above the level it occupies when the stick is at rest. The stiffness and the damping of this connection are defined by the geometry and the properties of the materials of the arms 110 and of the compressible element 109.

Ainsi, les bras 110 se déforment de manière similaire de telle sorte que les différents segments qui les composent s'orientent pour donner une configuration dans laquelle la portion centrale 101 s'est déplacée vers le haut par rapport à la portion périphérique 107 de la pièce de liaison 100. Thus, the arms 110 deform similarly so that the different segments that compose them are oriented to give a configuration in which the central portion 101 has moved upwards relative to the peripheral portion 107 of the piece link 100.

Dans le cas d'une déformation en pivotement vers l'arrière, tel qu'illustré à la figure 9, les bras 110 de la pièce de liaison se déforment de manière différente selon leur position par rapport à l'axe du tube 2. De cette manière, le tube 2 peut ainsi pivoter de telle sorte que sa génératrice arrière se rapproche de la paroi interne de la cavité 32 de la poignée, provoquant également la déformation de la pièce 136 obturant la cavité.In the case of rearward pivoting deformation, as illustrated in figure 9 , the arms 110 of the connecting piece are deformed differently according to their position relative to the axis of the tube 2. In this way, the tube 2 can and rotate so that its rear generator is close to the inner wall of the cavity 32 of the handle, also causing the deformation of the piece 136 closing the cavity.

Bien entendu, grâce à la configuration symétrique de la pièce de liaison 100, le tube 2 peut pivoter non seulement dans un plan avant/arrière, à l'instar de ce qui est représenté à la figure 5 pour le premier mode de réalisation, mais également dans un plan transversal correspondant pour l'utilisateur à un déplacement de la poignée vers la droite et la gauche par rapport au point de contact du bâton sur le sol.Of course, thanks to the symmetrical configuration of the connecting piece 100, the tube 2 can pivot not only in a front / rear plane, as is shown in FIG. figure 5 for the first embodiment, but also in a corresponding transverse plane for the user to a movement of the handle to the right and left relative to the point of contact of the stick on the ground.

La configuration de cette pièce de liaison 100 permet également une rotation du tube 2 autour de son propre axe, de sorte que le tube et la poignée présentent l'un par rapport à l'autre trois degrés de liberté en rotation et un degré de liberté en translation. La poignée est donc reliée au tube par une liaison rotule à glissière.The configuration of this connecting piece 100 also allows a rotation of the tube 2 around its own axis, so that the tube and the handle have relative to each other three degrees of freedom in rotation and a degree of freedom in translation. The handle is connected to the tube by a ball joint connection.

La capacité et l'amplitude de mouvements de pivotement du tube par rapport à la poignée peut être réglées par la forme de l'ouverture du bas du corps de la poignée, qui peut ne pas être circulaire, mais elliptique ou ovoïde.The ability and magnitude of pivotal movement of the tube relative to the handle can be adjusted by the shape of the opening in the lower body of the handle, which may be non-circular, but elliptical or ovoid.

Il est également possible dans le cas d'une ouverture circulaire d'utiliser une pièce d'obturation de l'ouverture qui présente des propriétés de compressibilité différente d'une direction à l'autre, favorisant ainsi les mouvements dans une direction privilégiée.It is also possible in the case of a circular opening to use a closure part of the opening which has compressibility properties different from one direction to another, thus favoring movements in a preferred direction.

Il est également possible d'ajuster la position du point d'articulation de la poignée sur le tube à un niveau intermédiaire, à savoir dans la partie supérieure de la poignée, c'est-à-dire sensiblement entre le milieu de la poignée et l'extrémité supérieure de celle-ci, par exemple pour optimiser le débattement du tube.It is also possible to adjust the position of the articulation point of the handle on the tube at an intermediate level, namely in the upper part of the handle, that is to say substantially between the middle of the handle and the upper end thereof, for example to optimize the movement of the tube.

Il est également possible dans une forme alternative illustrée à la figure 11 d'obtenir un comportement analogue en utilisant une pièce de liaison 200, qui comporte une portion supérieure montée coulissante dans un logement 203 formé à l'intérieur du capuchon 204 supérieur de la poignée.It is also possible in an alternative form illustrated in the figure 11 to obtain a similar behavior by using a connecting piece 200, which comprises an upper portion slidably mounted in a housing 203 formed inside the top cap 204 of the handle.

Cette portion supérieure 201 présente un logement 207 accueillant une rotule 208 solidaire de la partie basse 210 de la pièce de liaison. Cette partie basse 210 est quant à elle emmanchée dans le tube 2, permettant ainsi un déplacement du tube en pivotement dans toutes les directions par rapport à la poignée.This upper portion 201 has a housing 207 accommodating a ball joint 208 integral with the lower part 210 of the connecting piece. This lower part 210 is in turn fitted into the tube 2, thus allowing the tube to pivot in all directions relative to the handle.

Il ressort de ce qui précède que le bâton conforme à l'invention présente de multiples avantages, en particulier celui de présenter au moins un degré de liberté autorisant l'inclinaison de la poignée par rapport au tube, en plus d'une capacité de translation de la poignée par rapport au tube. De ce fait, il permet à l'utilisateur de conserver une inclinaison de son poignet ou de son avant-bras pendant sa progression. Un tel bâton permet également à l'utilisateur, lorsqu'il s'équilibre avec ses bâtons, de bénéficier d'un certain confort procuré par la liberté de mouvement du tube par rapport à la poignée et l'amortissement correspondant. L'emploi d'une poignée évidée en son centre permet également un certain allègement du bâton. Cet allègement peut être accentué en évidant la paroi de la poignée.It follows from the above that the stick according to the invention has multiple advantages, in particular that of having at least one degree of freedom allowing the inclination of the handle relative to the tube, in addition to a translational capacity of the handle relative to the tube. As a result, it allows the user to maintain an inclination of his wrist or forearm during his progression. Such a stick also allows the user, when equilibrium with his sticks, to enjoy a certain comfort provided by the freedom of movement of the tube relative to the handle and the corresponding damping. The use of a handle hollowed in its center also allows some lightening of the stick. This lightening can be accentuated by evacuating the wall of the handle.

Claims (15)

Bâton (1) pour la pratique d'un sport de glisse ou de la marche, comportant un tube (2) à l'extrémité supérieure duquel est solidarisée une poignée de préhension (3), ladite poignée (3) présentant une capacité de déplacement par rapport audit tube (2) selon une translation de direction parallèle à l'axe longitudinal du tube (2), caractérisé en ce que la poignée (3) présente une cavité interne (32), à l'intérieur de laquelle le tube (2) est apte à pivoter selon au moins un axe sensiblement perpendiculaire audit tube, grâce à des moyens (50, 110) d'articulation situés en partie supérieure de la poignée (3).Stick (1) for practicing a sport of gliding or walking, comprising a tube (2) at the upper end of which is secured a handle (3), said handle (3) having a displacement capacity with respect to said tube (2) in a directional translation parallel to the longitudinal axis of the tube (2), characterized in that the handle (3) has an internal cavity (32), inside which the tube ( 2) is pivotable along at least one axis substantially perpendicular to said tube, by means (50, 110) of articulation located in the upper part of the handle (3). Bâton selon la revendication 1 dans lequel la poignée présente une face avant déterminée comme la face orientée vers l'avant pour un utilisateur qui tient la poignée avec l'avant-bras plié à l'horizontale, caractérisé en ce que au moins l'axe de pivotement (50) du tube est parallèle à ladite face avant.The stick of claim 1 wherein the handle has a front face determined as the forward facing side for a user holding the handle with the forearm bent horizontally, characterized in that at least the axis pivoting (50) of the tube is parallel to said front face. Bâton selon la revendication 1, caractérisé en ce que l'ouverture (35) de la cavité (32) contient une pièce compressible (36) située en dessous des moyens d'articulation.Stick according to claim 1, characterized in that the opening (35) of the cavity (32) contains a compressible piece (36) located below the hinge means. Bâton selon la revendication 3, caractérisé en ce que l'ouverture (35) de la cavité (32) est obturée par la pièce compressible (36) située en bas de la poignée (3).Stick according to claim 3, characterized in that the opening (35) of the cavity (32) is closed by the compressible part (36) located at the bottom of the handle (3). Bâton selon la revendication 3, caractérisé en ce que la cavité interne (32) définit un espace vide (2) entre la paroi externe du tube (2) et la face interne (33) de la paroi (31) de la poignée (3) et s'étend depuis l'axe de pivotement du tube (50) par rapport à la poignée, jusqu'à l'ouverture de la cavité.Stick according to claim 3, characterized in that the internal cavity (32) defines a void space (2) between the outer wall of the tube (2) and the inner face (33) of the wall (31) of the handle (3). and extends from the axis of pivoting of the tube (50) relative to the handle, until the opening of the cavity. Bâton selon la revendication 3, caractérisé en ce que la pièce compressible (36) présente une portion (37) de forme complémentaire au tube.Stick according to claim 3, characterized in that the compressible part (36) has a portion (37) of complementary shape to the tube. Bâton selon la revendication 1, caractérisé en ce que l'ouverture (35) de la cavité présente une asymétrie limitant le débattement en pivotement du tube de manière différente radialement selon deux directions perpendiculaires.Stick according to claim 1, characterized in that the opening (35) of the cavity has an asymmetry limiting the deflection in pivoting of the tube differently radially in two perpendicular directions. Bâton selon la revendication 3, caractérisé en ce que la pièce compressible (36) contenue dans la cavité de la poignée présente des propriétés de compressibilité différentes selon la direction de déplacement du tube par rapport à la poignée.Stick according to claim 3, characterized in that the compressible part (36) contained in the cavity of the handle has different compressibility properties in the direction of movement of the tube relative to the handle. Bâton selon la revendication 1, caractérisé en ce que les moyens d'articulation sont formés par une goupille (50) traversant la poignée (3) et le tube (2) en étant perpendiculaire audit tube.Stick according to claim 1, characterized in that the hinge means are formed by a pin (50) passing through the handle (3) and the tube (2) being perpendicular to said tube. Bâton selon la revendication 9, caractérisé en ce que la goupille (50) est solidaire de la poignée et est apte à se déplacer dans des lumières allongées (48) réalisées dans le tube (2), et orientées parallèlement à l'axe longitudinal dudit tube.Stick according to claim 9, characterized in that the pin (50) is integral with the handle and is able to move in elongated slots (48) formed in the tube (2), and oriented parallel to the longitudinal axis of said tube. Bâton selon la revendication 8, caractérisé en ce que ladite goupille est solidarisée au tube, et elle est apte à se déplacer dans des lumières latérales orientées sensiblement parallèlement au tube, et ménagées dans la poignée.Stick according to claim 8, characterized in that said pin is secured to the tube, and it is able to move in side lights oriented substantially parallel to the tube, and formed in the handle. Bâton selon la revendication 8, caractérisé en ce qu'il comporte un élément amortisseur (42) interposé entre l'extrémité supérieure du tube (2) et la partie supérieure de la poignée.Stick according to claim 8, characterized in that it comprises a damping element (42) interposed between the upper end of the tube (2) and the upper part of the handle. Bâton selon la revendication 1, caractérisé en ce que les moyens d'articulation sont formés par une pièce de liaison (100) dont la portion centrale (101) est solidaire par sa zone inférieure (103) de l'extrémité du tube (2), et qui présente un ensemble d'au moins deux bras déformables (110) s'étendant radialement, les extrémités desdits bras (114) étant solidaires de la poignée (3).Stick according to claim 1, characterized in that the hinge means are formed by a connecting piece (100) whose central portion (101) is secured by its lower zone (103) of the end of the tube (2). , and which has an assembly of at least two deformable arms (110) extending radially, the ends of said arms (114) being integral with the handle (3). Bâton selon la revendication 13, caractérisé en ce que les bras déformables (110) sont noyés dans un matériau compressible (109) présentant une rigidité et/ou une dureté plus faibles que celles du matériau composant les bras déformables (110).Stick according to claim 13, characterized in that the deformable arms (110) are embedded in a compressible material (109) having a stiffness and / or hardness lower than those of the material forming the deformable arms (110). Bâton selon la revendication 1, caractérisé en ce que la partie centrale (102) de pièce de liaison (100) débouche sur le haut de la poignée.Stick according to claim 1, characterized in that the central portion (102) of the connecting piece (100) opens on the top of the handle.
EP14188361.1A 2013-11-05 2014-10-09 Stick for practising a sliding or walking sport Active EP2868223B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1360833A FR3012727B1 (en) 2013-11-05 2013-11-05 BATON FOR THE PRACTICE OF SLIDING SPORT OR THE MARKET

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EP2868223A1 true EP2868223A1 (en) 2015-05-06
EP2868223B1 EP2868223B1 (en) 2016-07-13

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FR (1) FR3012727B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3032333A1 (en) * 2015-02-09 2016-08-12 Frederic Dubois SWIVEL STICK HANDLE
ITUB20152135A1 (en) * 2015-07-13 2017-01-13 Atk Race Srl ASSISTIVE TOOL FOR MOTOR ACTIVITIES

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2185424A1 (en) 1972-05-20 1974-01-04 Siot Taillefer Aul
DE3247161A1 (en) 1982-12-21 1984-06-28 Leki-Sport Lenhart GmbH & Co KG, 7312 Kirchheim Ski stick having a shock-absorbing arrangement
US4597589A (en) * 1984-03-16 1986-07-01 Fujii Ray K Pivoted grip ski pole
WO1988003429A1 (en) * 1986-11-14 1988-05-19 Daleboot Usa Ski pole
US5295715A (en) 1993-04-09 1994-03-22 Blaricom Terry M Van Shock absorbing ski pole handle
US6254134B1 (en) 1997-09-29 2001-07-03 Gabel Srl Shock absorbing device for ski poles, walking sticks, crutches and similar articles
US6460891B1 (en) * 1998-10-17 2002-10-08 Gregory Glenn Jones Ski pole
US20120012141A1 (en) 2010-07-13 2012-01-19 Easton Technical Products, Inc. Shock absorbing system for trekking poles

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2185424A1 (en) 1972-05-20 1974-01-04 Siot Taillefer Aul
DE3247161A1 (en) 1982-12-21 1984-06-28 Leki-Sport Lenhart GmbH & Co KG, 7312 Kirchheim Ski stick having a shock-absorbing arrangement
US4597589A (en) * 1984-03-16 1986-07-01 Fujii Ray K Pivoted grip ski pole
WO1988003429A1 (en) * 1986-11-14 1988-05-19 Daleboot Usa Ski pole
US5295715A (en) 1993-04-09 1994-03-22 Blaricom Terry M Van Shock absorbing ski pole handle
US6254134B1 (en) 1997-09-29 2001-07-03 Gabel Srl Shock absorbing device for ski poles, walking sticks, crutches and similar articles
US6460891B1 (en) * 1998-10-17 2002-10-08 Gregory Glenn Jones Ski pole
US20120012141A1 (en) 2010-07-13 2012-01-19 Easton Technical Products, Inc. Shock absorbing system for trekking poles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3032333A1 (en) * 2015-02-09 2016-08-12 Frederic Dubois SWIVEL STICK HANDLE
WO2016128628A1 (en) 2015-02-09 2016-08-18 Frederic Dubois Pivoting grip for a pole
ITUB20152135A1 (en) * 2015-07-13 2017-01-13 Atk Race Srl ASSISTIVE TOOL FOR MOTOR ACTIVITIES

Also Published As

Publication number Publication date
EP2868223B1 (en) 2016-07-13
FR3012727A1 (en) 2015-05-08
FR3012727B1 (en) 2017-02-24

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