WO2004020224A1 - Pre-assembled rim reinforcement and nut - Google Patents

Pre-assembled rim reinforcement and nut Download PDF

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Publication number
WO2004020224A1
WO2004020224A1 PCT/FR2003/002609 FR0302609W WO2004020224A1 WO 2004020224 A1 WO2004020224 A1 WO 2004020224A1 FR 0302609 W FR0302609 W FR 0302609W WO 2004020224 A1 WO2004020224 A1 WO 2004020224A1
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WO
WIPO (PCT)
Prior art keywords
nut
reinforcement
head
spoke
rim
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/FR2003/002609
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French (fr)
Inventor
Philippe Heine
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to AU2003278227A priority Critical patent/AU2003278227A1/en
Publication of WO2004020224A1 publication Critical patent/WO2004020224A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/06—Rims characterised by means for attaching spokes, i.e. spoke seats
    • B60B21/062—Rims characterised by means for attaching spokes, i.e. spoke seats for bicycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B1/00—Spoked wheels; Spokes thereof
    • B60B1/02—Wheels with wire or other tension spokes
    • B60B1/04—Attaching spokes to rim or hub
    • B60B1/041—Attaching spokes to rim or hub of bicycle wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B1/00—Spoked wheels; Spokes thereof
    • B60B1/02—Wheels with wire or other tension spokes
    • B60B1/04—Attaching spokes to rim or hub
    • B60B1/043—Attaching spokes to rim
    • B60B1/048—Attaching spokes to rim by the use of screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/02—Rims characterised by transverse section
    • B60B21/026—Rims characterised by transverse section the shape of rim well

Definitions

  • the present invention relates to a device which acts both as a reinforcement for the holes made in the rims of bicycles in order to leave a passage for the nuts intended to tension the spokes and for the nut for fixing and adjusting the spoke tension on the wheel once mounted.
  • reinforcements used frequently, mention may be made of metal eyelets.
  • the role of these reinforcements is multiple. First, they are responsible for distributing the contact pressure between the head of the nut used to tension the spoke of the wheel and the rim. They also serve to facilitate the swiveling of this nut head so that it can orient itself naturally during tightening to follow the direction imposed by the radius which is not in the plane perpendicular to the axis of rotation of the wheel, cutting the rim and passing through its center. All of these functions serve to reinforce the resistance of the wheels as well as to increase the longevity of the rims.
  • the double metal eyelet made up of two parts: (i) an upper element, of large diameter, the head of which is folded down on the face of the rim situated on the side of the tire and the other end folded down internally; (ii) a lower element, the head of which is folded over the lower end of the preceding element and the lower part of which is folded down by crimping onto the part of the rim oriented towards the hub.
  • the object of the present invention is to provide a simple solution for equipping the rims of their reinforcements, when desired, without having to resort to a particular mounting step during the process of manufacturing a bicycle wheel. More particularly in the case of reinforcements of the metal eyelet type produced on mechanical presses using so-called stamping tools to be followed, one of the objects of the invention is the elimination of the crimping step of these eyelets on the rim.
  • the device according to the invention comprises, according to a first characteristic, two elements.
  • the first called “nut” allows the connection between the rim and the spoke and allows the tension of the latter to be adjusted.
  • the second called “reinforcement” has the function of reinforcing the holes made in the rim.
  • the first element called "nut” must have the following characteristics according to the invention:
  • the body of the "nut” will present a means of connection with the spoke.
  • the body will be provided with an external gripping system by a tool to ensure the adjustment of the tension of the spoke once the wheel is mounted.
  • a zone located on the axis of this body having a section perpendicular to its main axis sufficiently narrowed relative to the same section located in the gripping zone and a sufficient length so that a sheet pierced with a hole which has just been crossed without play by the gripping zone can play and swivel very freely between the head of the nut and this gripping zone.
  • the end of the body, located opposite the head on the main axis of the part will be provided with a surface intended to facilitate the introduction of T'écrou "in a hole.
  • the upper part of the head will be provided with a gripping system allowing the "nut” to rotate around its main axis during assembly with the spoke.
  • the lower surface of the head that which contains the intersection between the head and the body of the "nut” will constitute the bearing surface of the "nut”. It will have a shape such that in contact with a suitable surface, it will allow a swiveling of the nut ". This surface will be called SE.
  • the second element called "reinforcement” must have the following characteristics according to the invention:
  • the “reinforcement” and “nut” elements are assembled in such a way that:
  • FIGS. 1A and 1B show two embodiments of the "reinforcement” (2), in section.
  • Figure 2 shows the "nut” (1).
  • Figure 2A is the view of the "nut” according to section AA.
  • FIG. 3 represents an embodiment of the “reinforcement” - “nut” assembly for a rim J of U-shaped profile shown in FIG. 4 in section after assembly of the assembly according to the invention.
  • FIG. 5 represents an embodiment of the “reinforcement” - “nut” assembly for a rim J of tabular profile shown in FIG. 6 in section after assembly of the assembly according to the invention.
  • the nut may have a shape very close to the general shape that is usually found on the spoke tension adjustment nuts used for mounting the bicycle wheels ( Figure 2).
  • Its head, domed in its upper part, can be split so as to allow a first screwing on the ray using a tool which could be a screwdriver.
  • the lower part of the head defines a surface which contains the intersection of the head and the body.
  • This surface may be spherical in order to allow a swiveling of the "nut” on its support at the moment of tightening (SE).
  • the lower part of the body may be provided 4 outer flats (forming a square in a perpendicular section to the axis of the "nut” whose diagonal has a precise dimension D) (2-4 and Figure 2A) in order to allow later adjustment of the spoke tension using an appropriate wrench.
  • the head and the flat area may be separated by a cylindrical area (2-5) with a diameter DE less than this dimension D and the dimension DP determined on the "reinforcement".
  • This dimension DE as well as the length of this cylindrical part along the main axis of the part must be chosen so that once mounted on the wheel, the swiveling tolerated for the "nut” is sufficient to avoid any stress radius bending.
  • the head of the nut " we can give the body a conical shape (2-6) with an axis equal to the axis of the thread and which will be connected to the lower part of the flat area. .
  • the element called "reinforcement” may take different forms depending on the profile of the rims to be fitted.
  • the reinforcement can take the general form of a bowler hat, the bottom of which has been pierced ( Figure 1A). It can consist of a hollow cylindrical body (1-1) and a flange folded outwards (1-2), in its upper part. This flange can serve as a support for the head of the element called a "nut” and ensure the distribution on the rim of the tensile stresses exerted by the spoke. It can also authorize the swiveling of the nut head.
  • the other end of the "reinforcement" the one that will be closest to the wheel hub once the device according to the invention has been mounted, can be drilled with a particularly precise diameter hole DP.
  • a reinforcement similar to that described in the case of the simple U-shaped profile can be used if the bearing face chosen is the periphery of the rim located closest to the hub. If on the other hand, it is the periphery of the rim located on the side of the tire which is chosen as the bearing face, it may be preferable to design a "reinforcement" as described below (FIG. 1B): it will be constituted a hollow cylinder (1-1) fitted in its upper part with a flap folded outwards (1-2) and which will serve to distribute the traction force on the rim.
  • This cylinder will be located above a second hollow cylinder (1-3) of smaller diameter and closed by a bottom drilled to a precisely calibrated diameter DP.
  • the two cylinders will be connected together by a surface SC which serves as a support for the head of the nut "and is located opposite the flange on the large diameter cylinder and opposite the bottom drilled on the cylinder of small diameter.
  • the set of these surfaces is located on an axis common to the two cylinders. This surface authorizes a swiveling of the head of T "nut when this one is there in support.
  • the assembly of the two elements called respectively “reinforcement” and “nut” can be achieved by fitting ( Figure 3 and Figure 5).
  • the dimensions DP dimension of the hole drilled in the bottom of the "reinforcement”
  • D dimension of the largest diagonal determined in a plane perpendicular to the axis of the part in the area of the flats of T'écrou " are chosen as that D is greater than DP If ⁇ is equal to DP-D, ⁇ is negative and its value is determined according to the materials constituting the elements called “reinforcement” and “nut” as well as the technology chosen to assemble the two elements.
  • the "nut” (3-1 or 5-1) can then be forced through the diameter drilled in the bottom of the reinforcement (3-2 or 5- 2) so that once assembled, the device according to the invention mounted on a bicycle wheel has the head of the nut (3-3 or 5-3) on the side of the tire and that the area of the flats (3-4 or 5-4) of the "nut” is located on the side of the wheel hub.
  • the element called “reinforcement” can play freely around the cylindrical part (3-5 or 5-5) of the nut included between e the area of the flats and the head and the area of the flats of the nut is entirely located outside the “reinforcement”.
  • a mechanism provided with a step-by-step movement actuated by the movement of the press may be responsible for recovering the stamped parts when they are permanently separated from their strip at the last station of the stamping tool to follow.
  • a distribution system for example one or more vibrating bowls
  • the press movement can carry out the fitting.
  • an ejection station will complete the mechanism. The whole of this mechanism could be mounted following the stamping tool to be followed on the press. In this same particular case, the assembly could also be carried out on a specific machine distinct from the stamping press.
  • the main advantage offered by the device according to the invention in addition to maintaining the roles played respectively by the reinforcement of the holes in the rims and the nut for fixing and adjusting the spoke tension, is that it can be assembled in one only operation using equipment little different from that generally required by the sole mounting of the nut.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pulleys (AREA)
  • Tires In General (AREA)

Abstract

The invention concerns a device for assembling into one single element the functions of a rim bore reinforcement and of a spoke tension maintenance and adjustment nut on certain bicycle wheels. It consists of a reinforcement (5-2) and a nut (5-1) assembled such that the reinforcement can swivel freely about the nut. The nut head (5-3) enables the assembly to be mounted on the spoke. The nut comprises a grip system (5-4) which enables the spoke to be adjusted once the wheel is mounted by means of an adapted tool.

Description

RENFORT DEJANTEET ECROUPREALABLEMENT ASSEMBLES REINFORCEMENT ALREADY AND ECROUPREALLY ASSEMBLED

La présente invention concerne un dispositif qui fait office à la fois de renfort pour les perçages réalisés dans les jantes de bicyclettes afin de laisser un passage aux écrous destinés à tendre les rayons et d'écrou de fixation et de réglage de tension du rayon sur la roue une fois montée.The present invention relates to a device which acts both as a reinforcement for the holes made in the rims of bicycles in order to leave a passage for the nuts intended to tension the spokes and for the nut for fixing and adjusting the spoke tension on the wheel once mounted.

Comme type de renforts utilisés fréquemment, on peut citer les oeillets métalliques. Le rôle de ces renforts est multiple. Premièrement, ils sont chargés de répartir la pression de contact entre la tête de l'écrou servant à mettre le rayon de la roue en tension et la jante. Ils servent également à faciliter le rotulage de cette tête d'écrou afin qu'elle puisse s'orienter naturellement lors du serrage pour suivre la direction imposée par le rayon qui ne se trouve pas dans le plan perpendiculaire à l'axe de rotation de la roue, coupant la jante et passant par son centre. L'ensemble de ces fonctions sert à renforcer la résistance des roues ainsi qu'à augmenter la longévité des jantes.As type of reinforcements used frequently, mention may be made of metal eyelets. The role of these reinforcements is multiple. First, they are responsible for distributing the contact pressure between the head of the nut used to tension the spoke of the wheel and the rim. They also serve to facilitate the swiveling of this nut head so that it can orient itself naturally during tightening to follow the direction imposed by the radius which is not in the plane perpendicular to the axis of rotation of the wheel, cutting the rim and passing through its center. All of these functions serve to reinforce the resistance of the wheels as well as to increase the longevity of the rims.

Dans l'état actuel de la technique, on peut trouver sur le marché plusieurs solutions différentes, parmi lesquelles :In the current state of the art, there are several different solutions on the market, including:

- pour une jante simple de section en U, il existe:- for a simple rim with a U-shaped section, there are:

* le renfort de type oeillet simple dont l'une des extrémités est rabattue du côté de la partie de la jante supportant le pneumatique et l'autre partie rabattue par sertissage sur la face de la jante orientée vers le moyeux.* the reinforcement of the simple eyelet type, one end of which is folded down on the side of the part of the rim supporting the tire and the other part folded down by crimping on the face of the rim oriented towards the hub.

* une rondelle dont l'une des faces d'appui est en contact avec la jante, côté pneumatique, et dont l'autre, inclinée perpendiculairement par rapport à l'axe définissant la direction du rayon, sert de face d'appui à l'écrou de serrage. - pour une jante de section tubulaire, il existe:* a washer, one of the bearing faces of which is in contact with the rim, on the pneumatic side, and the other of which, inclined perpendicularly to the axis defining the direction of the spoke, serves as the bearing face for the '' tightening nut. - for a rim of tubular section, there are:

* l'oeillet métallique double constitué de deux parties: (i) un élément supérieur, de gros diamètre, dont la tête est rabattue sur la face de la jante située du côté du pneumatique et l'autre extrémité rabattue intérieurement; (ii)un élément inférieur dont la tête est rabattue sur l'extrémité inférieure de l'élément précédent et dont la partie inférieure est rabattue par sertissage sur la partie de la jante orientée vers le moyeu.* the double metal eyelet made up of two parts: (i) an upper element, of large diameter, the head of which is folded down on the face of the rim situated on the side of the tire and the other end folded down internally; (ii) a lower element, the head of which is folded over the lower end of the preceding element and the lower part of which is folded down by crimping onto the part of the rim oriented towards the hub.

* l'oeillet métallique simple, serti comme les oeillets pour les jantes en U , sur le pourtour de la jante situé du côté du moyeu, le pourtour supérieur de la jante situé du côté du pneumatique étant simplement percé concentriquement d'un trou laissant le passage à l'écrou de tension de rayon et à son outil de montage.* the simple metal eyelet, crimped like the eyelets for the U-shaped rims, on the rim of the rim located on the side of the hub, the upper rim of the rim located on the side of the tire being simply drilled concentrically with a hole leaving the change to the spoke tension nut and its mounting tool.

* une rondelle qui prend place sur la face intérieure du pourtour de la jante situé du côté du moyeux, le pourtour supérieur de la jante situé du côté du pneumatique étant simplement percé concentriquement d'un trou laissant le passage à l'écrou de tension du rayon et à son outil de montage. * d'autres renforts spécifiques utilisés pour renforcer des jantes de forme particulière, par exemple certaines jantes très profilées sur le plan aérodynamique. Dans les cas présentés ci-dessus ainsi que dans d'autres éventuels cas similaires, le procédé de fabrication d'une roue complète nécessite une étape particulière, qui est l'équipement de la jante avec son renfort, le plus souvent à l'aide d'un équipement industriel spécifique. Dans le cas des rondelles, celles-ci ne peuvent être disposées qu'au moment du montage des rayons, ce qui complique énormément l'exécution.* a washer which takes place on the inner face of the rim located on the side of the hub, the upper rim of the rim located on the side of the tire being simply drilled concentrically with a hole allowing passage for the tension nut of the department and its mounting tool. * other specific reinforcements used to reinforce rims of a particular shape, for example certain rims which are very streamlined on the aerodynamic level. In the cases presented above as in other possible similar cases, the process for manufacturing a complete wheel requires a particular step, which is equipping the rim with its reinforcement, most often using specific industrial equipment. In the case of washers, these can only be placed when the spokes are assembled, which greatly complicates execution.

Le but de la présente invention est d'apporter une solution simple pour l'équipement des jantes de leurs renforts, lorsque cela est souhaité, sans avoir recours à une étape particulière de montage au cours du procédé de fabrication d'une roue de bicyclette. Plus particulièrement dans le cas des renforts de type oeillets métalliques fabriqués sur des presses mécaniques à l'aide d'outillages dits d'emboutissage à suivre, l'un des objets de l'invention est la suppression de l'étape de sertissage de ces oeillets sur la jante.The object of the present invention is to provide a simple solution for equipping the rims of their reinforcements, when desired, without having to resort to a particular mounting step during the process of manufacturing a bicycle wheel. More particularly in the case of reinforcements of the metal eyelet type produced on mechanical presses using so-called stamping tools to be followed, one of the objects of the invention is the elimination of the crimping step of these eyelets on the rim.

Le dispositif selon l'invention comporte selon une première caractéristique deux éléments. Le premier appelé "écrou" permet la liaison entre la jante et le rayon et autorise le réglage de la tension de ce dernier. Le second appelé "renfort" a pour fonction de renforcer les perçages pratiqués dans la jante.The device according to the invention comprises, according to a first characteristic, two elements. The first called "nut" allows the connection between the rim and the spoke and allows the tension of the latter to be adjusted. The second called "reinforcement" has the function of reinforcing the holes made in the rim.

Le premier élément appelé "écrou" devra posséder les caractéristiques selon l'invention suivantes:The first element called "nut" must have the following characteristics according to the invention:

- Il sera formé d'un corps et d'une tête, situés sur un même axe, appelé axe principal, de telle sorte que les dimensions de la tête empêchent l'écrou tout entier de passer au travers du trou dans lequel le corps de l'écrou doit être inséré.- It will be formed of a body and a head, located on the same axis, called the main axis, so that the dimensions of the head prevent the whole nut from passing through the hole in which the body of the nut must be inserted.

- Le corps de l'" écrou" présentera un moyen de liaison avec le rayon.- The body of the "nut" will present a means of connection with the spoke.

- A l'opposé de la tête, le corps sera pourvu d'un système de préhension extérieur par un outil afin d'assurer le réglage de la tension du rayon une fois la roue montée. - Entre la tête de l'" écrou" et cette zone de préhension existera une zone située sur l'axe de ce corps présentant une section perpendiculaire à son axe principal suffisamment rétrécie par rapport à une même section située dans la zone de préhension et une longueur suffisante pour qu'une tôle percée d'un trou qui vient d'être traversée sans jeu par la zone de préhension puisse jouer et rotuler très librement entre la tête de l'écrou et cette zone de préhension.- Opposite the head, the body will be provided with an external gripping system by a tool to ensure the adjustment of the tension of the spoke once the wheel is mounted. - Between the head of the "nut" and this gripping zone will exist a zone located on the axis of this body having a section perpendicular to its main axis sufficiently narrowed relative to the same section located in the gripping zone and a sufficient length so that a sheet pierced with a hole which has just been crossed without play by the gripping zone can play and swivel very freely between the head of the nut and this gripping zone.

- L'extrémité du corps, situé à l'opposé de la tête sur l'axe principal de la pièce sera muni d'une surface destinée à faciliter l'introduction de T'écrou" dans un trou. - La partie supérieure de la tête sera munie d'un système de préhension permettant de faire tourner l'"écrou" autour de son axe principal lors de l'assemblage avec le rayon.- The end of the body, located opposite the head on the main axis of the part will be provided with a surface intended to facilitate the introduction of T'écrou "in a hole. - The upper part of the head will be provided with a gripping system allowing the "nut" to rotate around its main axis during assembly with the spoke.

- La surface inférieure de la tête, celle qui contient l'intersection entre la tête et le corps de l'"écrou" constituera la surface d'appui de l'"écrou". Elle aura une forme telle qu'en contact avec une surface adaptée, elle autorisera un rotulage de T'écrou". Cette surface sera dénommée SE.- The lower surface of the head, that which contains the intersection between the head and the body of the "nut" will constitute the bearing surface of the "nut". It will have a shape such that in contact with a suitable surface, it will allow a swiveling of the nut ". This surface will be called SE.

Le second élément appelé "renfort" devra posséder les caractéristiques selon l'invention suivantes:The second element called "reinforcement" must have the following characteristics according to the invention:

- Il devra offrir à l'élément appelé "écrou" une surface d'appui autorisant un certain rotulage. Cette surface d'appui ne sera cependant pas nécessairement une portion de sphère parfaite. Cette surface sera dénommée SC.- It must offer the element called "nut" a support surface allowing a certain swiveling. This bearing surface will not however necessarily be a portion of a perfect sphere. This surface will be called SC.

- Il devra posséder une ou plusieurs surfaces chargées de répartir l'effort de traction exercé par le rayon sur la jante par l'intermédiaire de l'élément selon l'invention.- It must have one or more surfaces responsible for distributing the tensile force exerted by the spoke on the rim through the element according to the invention.

- Il devra être percé d'un trou au diamètre DP calibré précisément. Ce diamètre sera choisi de manière à ce que la pièce appelée "écrou" ne puisse passer entièrement au travers de ce trou. - L'ensemble des surfaces du "renfort" définies ci dessus seront choisies pour qu'une fois la roue assemblée, le corps de l'élément "écrou" ait traversé le trou de diamètre DP en se trouvant du côté du moyeu, la tête de l'élément "écrou" soit en appui sur la surface autorisant un rotulage et se situe du côté du pneumatique et, enfin, les surfaces d'appui chargées de répartir l'effort de traction sur la jante soient telles qu'elles autorisent un alignement parfait entre le corps de l'élément "écrou" et le rayon.- It must be drilled with a DP diameter hole precisely calibrated. This diameter will be chosen so that the part called "nut" cannot pass entirely through this hole. - All of the "reinforcement" surfaces defined above will be chosen so that once the wheel has been assembled, the body of the "nut" element has passed through the hole with diameter DP, being on the side of the hub, the head of the "nut" element is supported on the surface allowing swiveling and is located on the side of the tire and, finally, the bearing surfaces responsible for distributing the tractive effort on the rim are such that they allow a perfect alignment between the body of the "nut" element and the spoke.

Selon une autre caractéristique de l'invention, les éléments "renfort" et "écrou" sont assemblés de manière à ce que:According to another characteristic of the invention, the “reinforcement” and “nut” elements are assembled in such a way that:

-il soit impossible de séparer les deux éléments sans exercer d'effort important. - les surfaces SC et SE appartenant respectivement au "renfort" et à-it is impossible to separate the two elements without exerting significant effort. - the surfaces SC and SE belonging respectively to the "reinforcement" and to

1'" écrou" et autorisant le rotulage entre ces deux éléments puissent être en contact après l'assemblage.1 "nut" and allowing the swiveling between these two elements can be in contact after assembly.

- une fois les deux éléments assemblés, le "renfort" puisse jouer librement autour de l'" écrou". - la zone de T'écrou" munie du système de préhension destiné au réglage de la tension du rayon soit entièrement à l'extérieur du renfort. Les dessins annexés illustrent différents mode de réalisation. Les figures 1 A et 1B représentent deux modes de réalisation du "renfort" (2), en coupe. La figure 2 représente l'"écrou" (1). La figure 2A est la vue de l'"écrou" selon la section AA. La figure 3 représente un mode de réalisation de l'assemblage "renfort"-"écrou" pour une jante J de profil en U représenté à la figure 4 en coupe après montage de l'assemblage selon l'invention. La figure 5 représente un mode de réalisation de l'assemblage "renfort" - "écrou" pour une jante J de profil tabulaire représenté à la figure 6 en coupe après montage de l'assemblage selon l'invention.- once the two elements are assembled, the "reinforcement" can play freely around the "nut". - the T'écrou "zone provided with the gripping system intended for adjusting the spoke tension is entirely outside the reinforcement. The accompanying drawings illustrate various embodiments. Figures 1A and 1B show two embodiments of the "reinforcement" (2), in section. Figure 2 shows the "nut" (1). Figure 2A is the view of the "nut" according to section AA. FIG. 3 represents an embodiment of the “reinforcement” - “nut” assembly for a rim J of U-shaped profile shown in FIG. 4 in section after assembly of the assembly according to the invention. FIG. 5 represents an embodiment of the “reinforcement” - “nut” assembly for a rim J of tabular profile shown in FIG. 6 in section after assembly of the assembly according to the invention.

Selon un mode de réalisation particulier, T'écrou" pourra avoir une forme très voisine de la forme générale que l'on trouve habituellement sur les écrous de réglage de tension de rayon utilisés pour le montage des roues de bicyclette (Figure 2). Il pourra être composé d'un corps (2-1) et d'une tête (2-2) situés sur un même axe, l'ensemble étant percé et taraudé selon l'axe principal de la pièce de manière à pouvoir se visser sur le rayon (2-3). Sa tête, bombée dans sa partie supérieure peut être fendue de manière à permettre un premier vissage sur le rayon à l'aide d'un outil qui pourrait être un tournevis. La partie inférieure de la tête définit une surface qui contient l'intersection de la tête et du corps. Cette surface pourra être sphérique afin d'autoriser un rotulage de 1'" écrou" sur son appui au moment du serrage (SE). La partie inférieure du corps pourra être munie de 4 méplats extérieurs (formant un carré dans une section perpendiculaire à l'axe de l'"écrou" dont la diagonale possède une cote précise D) (2-4 et Figure 2A) afin de permettre ultérieurement le réglage de la tension des rayons à l'aide d'une clé appropriée. La tête et la zone des méplats pourront être séparés par une zone cylindrique (2-5) de diamètre DE inférieur à cette cote D et à la cote DP déterminée sur le "renfort". Cette cote DE ainsi que la longueur de cette partie cylindrique selon l'axe principal de la pièce devront être choisis de manière à ce qu'une fois monté sur la roue, le rotulage toléré pour l'" écrou" soit suffisant pour éviter toute contrainte de flexion au rayon. A l'opposé de la tête de T'écrou", on pourra donner au corps une forme conique (2-6) d'axe égal à l'axe du taraudage et qui viendra se raccorder à la partie inférieure de la zone des méplats.According to a particular embodiment, the nut "may have a shape very close to the general shape that is usually found on the spoke tension adjustment nuts used for mounting the bicycle wheels (Figure 2). may be composed of a body (2-1) and a head (2-2) located on the same axis, the assembly being drilled and tapped along the main axis of the part so as to be able to be screwed onto the spoke (2-3). Its head, domed in its upper part, can be split so as to allow a first screwing on the ray using a tool which could be a screwdriver. The lower part of the head defines a surface which contains the intersection of the head and the body. This surface may be spherical in order to allow a swiveling of the "nut" on its support at the moment of tightening (SE). The lower part of the body may be provided 4 outer flats (forming a square in a perpendicular section to the axis of the "nut" whose diagonal has a precise dimension D) (2-4 and Figure 2A) in order to allow later adjustment of the spoke tension using an appropriate wrench. The head and the flat area may be separated by a cylindrical area (2-5) with a diameter DE less than this dimension D and the dimension DP determined on the "reinforcement". This dimension DE as well as the length of this cylindrical part along the main axis of the part must be chosen so that once mounted on the wheel, the swiveling tolerated for the "nut" is sufficient to avoid any stress radius bending. Opposite the head of the nut ", we can give the body a conical shape (2-6) with an axis equal to the axis of the thread and which will be connected to the lower part of the flat area. .

Selon des modes de réalisation particuliers, l'élément appelé "renfort" pourra prendre des formes différentes suivant le profil des jantes à équiper. Dans le cas d'une jante dont le profil est en U, le renfort peut prendre la forme générale d'un chapeau melon, dont on aurait percé le fond (Figure 1A). Il peut se composer d'un corps cylindrique creux (1-1) et d'une collerette rabattue vers l'extérieure (1-2), dans sa partie supérieure. Cette collerette peut servir d'appui à la tête de l'élément appelé "écrou" et assurer la répartition sur la jante des contraintes de traction exercées par le rayon. Elle peut autoriser aussi le rotulage de la tête d'écrou. L'autre extrémité du "renfort", celle qui sera la plus proche du moyeux de la roue une fois le dispositif selon l'invention monté, peut être percée d'un trou de diamètre DP particulièrement précis .According to particular embodiments, the element called "reinforcement" may take different forms depending on the profile of the rims to be fitted. In the case of a rim with a U-shaped profile, the reinforcement can take the general form of a bowler hat, the bottom of which has been pierced (Figure 1A). It can consist of a hollow cylindrical body (1-1) and a flange folded outwards (1-2), in its upper part. This flange can serve as a support for the head of the element called a "nut" and ensure the distribution on the rim of the tensile stresses exerted by the spoke. It can also authorize the swiveling of the nut head. The other end of the "reinforcement", the one that will be closest to the wheel hub once the device according to the invention has been mounted, can be drilled with a particularly precise diameter hole DP.

Dans le cas d'une jante dite tabulaire, un renfort similaire à celui décrit dans le cas du profil simple en U peut être utilisé si la face d'appui choisie est le pourtour de la jante situé le plus près du moyeux. Si par contre, c'est le pourtour de la jante situé du côté du pneumatique qui est choisi comme face d'appui, il peut être préférable de concevoir un "renfort" tel que décrit ci-après (Figure 1B): il sera constitué d'un cylindre creux (1-1) équipé dans sa partie supérieure d'une collerette rabattue vers l'extérieur (1-2) et qui servira à répartir l'effort de la traction sur la jante. Ce cylindre sera situé au-dessus d'un second cylindre creux (1-3) de diamètre inférieur et fermé par un fond percé à un diamètre DP calibré précisément. Les deux cylindres seront reliés entre eux par une surface SC qui sert d'appui à la tête de T'écrou" et se situe à l'opposé de la collerette sur le cylindre de grand diamètre et à l'opposé du fond percé sur le cylindre de petit diamètre. L'ensemble de ces surfaces est situé sur un axe commun aux deux cylindres. Cette surface autorise un rotulage de la tête de T'écrou" quand celui-ci s'y trouve en appui.In the case of a so-called tabular rim, a reinforcement similar to that described in the case of the simple U-shaped profile can be used if the bearing face chosen is the periphery of the rim located closest to the hub. If on the other hand, it is the periphery of the rim located on the side of the tire which is chosen as the bearing face, it may be preferable to design a "reinforcement" as described below (FIG. 1B): it will be constituted a hollow cylinder (1-1) fitted in its upper part with a flap folded outwards (1-2) and which will serve to distribute the traction force on the rim. This cylinder will be located above a second hollow cylinder (1-3) of smaller diameter and closed by a bottom drilled to a precisely calibrated diameter DP. The two cylinders will be connected together by a surface SC which serves as a support for the head of the nut "and is located opposite the flange on the large diameter cylinder and opposite the bottom drilled on the cylinder of small diameter. The set of these surfaces is located on an axis common to the two cylinders. This surface authorizes a swiveling of the head of T "nut when this one is there in support.

L'assemblage des deux éléments appelés respectivement "renfort" et "écrou" peut être réalisé par emmanchement (Figure 3 et Figure 5). Les cotes DP (cote du trou percé au fonds du "renfort") et D (cote de la plus grande diagonale déterminée dans un plan perpendiculaire à l'axe de la pièce dans la zone des méplats de T'écrou") sont choisies telles que D supérieure à DP. Si Δ est égal à DP-D, Δ est négatif et sa valeur est déterminée en fonction des matériaux constitutifs des éléments dits "renfort" et "écrou" ainsi que de la technologie choisie pour assembler les deux éléments. L"' écrou" (3-1 ou 5-1) peut alors être forcé au travers du diamètre percé dans le fonds du renfort (3-2 ou 5- 2) de manière à ce qu'une fois assemblé, le dispositif selon l'invention monté sur une roue de bicyclette présente la tête de l'écrou (3-3 ou 5-3) du côté du pneumatique et que la zone des méplats (3-4 ou 5-4) de l'" écrou" se situe du côté du moyeu de la roue. Après emmanchement, l'élément dit "renfort" peut jouer librement autour de la partie cylindrique (3-5 ou 5-5) de l'écrou comprise entre la zone des méplats et la tête et la zone des méplats de l'écrou est entièrement située en dehors du "renfort". Les figure 4 et 6 représentent les ensembles "renfort " / "écrou" après emmanchement et montage, respectivement pour une jante J de profil simple en U et pour une jante J tabulaire dont le pourtour situé côté pneumatique a été choisi comme surface d'appui.The assembly of the two elements called respectively "reinforcement" and "nut" can be achieved by fitting (Figure 3 and Figure 5). The dimensions DP (dimension of the hole drilled in the bottom of the "reinforcement") and D (dimension of the largest diagonal determined in a plane perpendicular to the axis of the part in the area of the flats of T'écrou ") are chosen as that D is greater than DP If Δ is equal to DP-D, Δ is negative and its value is determined according to the materials constituting the elements called "reinforcement" and "nut" as well as the technology chosen to assemble the two elements. The "nut" (3-1 or 5-1) can then be forced through the diameter drilled in the bottom of the reinforcement (3-2 or 5- 2) so that once assembled, the device according to the invention mounted on a bicycle wheel has the head of the nut (3-3 or 5-3) on the side of the tire and that the area of the flats (3-4 or 5-4) of the "nut" is located on the side of the wheel hub. After fitting, the element called "reinforcement" can play freely around the cylindrical part (3-5 or 5-5) of the nut included between e the area of the flats and the head and the area of the flats of the nut is entirely located outside the "reinforcement". FIGS. 4 and 6 represent the "reinforcement" / "nut" assemblies after fitting and fitting, respectively for a rim J of simple U-shaped profile and for a tabular rim J whose periphery situated on the pneumatic side has been chosen as a bearing surface .

Dans le cas particulier où l'élément appelé "renfort" est réalisé en métal avec un outil dit "outil d'emboutissage à suivre" sur une presse, l'assemblage entre le "renfort" et T'écrou" pourra être réalisé sur cette même machine en utilisant son énergie et le mouvement de monte et baisse qui la caractérise. Un mécanisme muni d'un mouvement de pas à pas actionné par le mouvement de la presse (par exemple par l'intermédiaire d'un système de roue à cliquet) pourra être chargé de récupérer les pièces embouties au moment où elles sont séparées définitivement de leur bande au dernier poste de l'outil d'emboutissage à suivre. Il les fera ensuite arriver jusqu'à un poste où un système de distribution (par exemple un ou plusieurs bols vibrants) viendra positionner sur chaque pièce un élément de type "écrou" (de la même façon par exemple que l'on alimente une tête de vissage automatique avec un élément à visser). Au poste suivant, le mouvement de la presse pourra réaliser l'emmanchement. Enfin, un poste d'éjection complétera le mécanisme. L'ensemble de ce mécanisme pourra être monté à la suite de l'outil d'emboutissage à suivre sur la presse. Dans ce même cas particulier, l'assemblage pourra également être réalisé sur une machine spécifique distincte de la presse à emboutir.In the particular case where the element called "reinforcement" is made of metal with a tool called "stamping tool to follow" on a press, the assembly between the "reinforcement" and T'écrou "can be carried out on this same machine using its energy and the up and down movement that characterizes it. A mechanism provided with a step-by-step movement actuated by the movement of the press (for example by means of a ratchet wheel system) may be responsible for recovering the stamped parts when they are permanently separated from their strip at the last station of the stamping tool to follow. He will then have them arrive at a station where a distribution system (for example one or more vibrating bowls) will position on each piece an element of the "nut" type (in the same way for example that one feeds a head automatic screwing with a screw element). At the next station, the press movement can carry out the fitting. Finally, an ejection station will complete the mechanism. The whole of this mechanism could be mounted following the stamping tool to be followed on the press. In this same particular case, the assembly could also be carried out on a specific machine distinct from the stamping press.

L'avantage principal offert par le dispositif selon l'invention, outre le maintien des rôles joués respectivement par le renfort des perçages des jantes et d'écrou de fixation et de réglage de tension des rayons, est qu'il peut se monter en une seule opération à l'aide d'un équipement peu différent de celui généralement nécessité par le seul montage de l'écrou. The main advantage offered by the device according to the invention, in addition to maintaining the roles played respectively by the reinforcement of the holes in the rims and the nut for fixing and adjusting the spoke tension, is that it can be assembled in one only operation using equipment little different from that generally required by the sole mounting of the nut.

Claims

REVENDICATIONS 1) Dispositif pour assurer simultanément les fonctions de renfort des zones de perçage sur une jante de bicyclette et d'écrou de maintien et de réglage de tension du rayon sur la roue une fois montée comportant un renfort (2) destiné à répartir sur la jante les efforts résultant de la tension du rayon et un écrou (1) destiné au maintien du rayon et au réglage de sa tension, l'écrou (1) étant formé d'un corps et d'une tête situés sur un même axe, les dimensions de la tête empêchant l'écrou (1) tout entier de passer au travers d'un trou du renfort (2) dans lequel le corps de l'écrou (1) doit être inséré, le corps de l'écrou (1) présentant un moyen de liaison avec le rayon, et à l'opposé de la tête, le corps étant pourvu d'un système de préhension par un outil afin d'assurer le réglage de la tension du rayon une fois la roue montée, la zone de l' écrou (1) munie du système de préhension étant située entièrement à l'extérieur du renfort (2) du côté du moyeu de la roue, le renfort (2) et l' écrou (1) possédant des surfaces SC et SE qui autorisent le rotulage entre ces deux éléments;1) Device for simultaneously ensuring the functions of reinforcing the drilling zones on a bicycle rim and retaining nut and adjusting spoke tension on the wheel once mounted, comprising reinforcement (2) intended to be distributed over the rim the forces resulting from the tension of the spoke and a nut (1) intended for maintaining the spoke and adjusting its tension, the nut (1) being formed of a body and a head located on the same axis, the dimensions of the head preventing the entire nut (1) from passing through a hole in the reinforcement (2) into which the body of the nut (1) is to be inserted, the body of the nut (1) presenting a means of connection with the spoke, and opposite the head, the body being provided with a gripping system using a tool in order to ensure adjustment of the tension of the spoke once the wheel is mounted, the zone of the nut (1) provided with the gripping system being located entirely outside the reinforcement (2) on the side of the wheel hub, the reinforcement (2) and the nut (1) having surfaces SC and SE which allow rotation between these two elements; caractérisé en ce que le renfort (2) et l' écrou (1) sont assemblés de sorte qu'il soit impossible de séparer ces deux éléments sans effort important et en ce qu'une fois assemblés, le renfort (2) puisse jouer librement autour de l' écrou (1).characterized in that the reinforcement (2) and the nut (1) are assembled so that it is impossible to separate these two elements without significant effort and in that once assembled, the reinforcement (2) can play freely around the nut (1). 2) Dispositif selon la revendication 1 caractérisé en ce qu'entre la tête et la zone de préhension de l'écrou (1) existe une zone ( 2-5, 3-5, 5-5 ) située sur l'axe du corps présentant une section perpendiculaire à son axe principal suffisamment rétrécie par rapport à une même section située dans la zone de préhension et une longueur suffisante pour que le renfort (2) percé du trou qui vient d' être traversé sans jeu par la zone de préhension puisse jouer librement.2) Device according to claim 1 characterized in that between the head and the gripping zone of the nut (1) there is a zone (2-5, 3-5, 5-5) located on the axis of the body having a section perpendicular to its main axis sufficiently narrowed in relation to the same section located in the gripping zone and a sufficient length so that the reinforcement (2) pierced with the hole which has just been passed through without play by the gripping zone can play freely. 3) Dispositif selon la revendication 1 ou 2 caractérisé en ce que le renfort3) Device according to claim 1 or 2 characterized in that the reinforcement (2) offre à l' écrou (1) une surface d'appui SC, en ce qu'il possède une ou plusieurs surfaces chargées de répartir l'effort de traction exercé par le rayon sur la jante, en ce que le trou est percé à un diamètre DP calibré précisément de manière à ce que l' écrou (1) ne puisse passer entièrement au travers de ce trou, en ce qu'il présente l'ensemble des surfaces définies ci-dessus de manière à ce que la roue une fois assemblée, le corps de l'écrou (1) ait traversé le trou de diamètre DP en se trouvant du côté du moyeu, la tête de 1' écrou (1) soit en appui sur la surface SC autorisant un certain rotulage et se situe du côté du pneumatique et qu'enfin les surfaces d'appui chargées de répartir l'effort de traction sur la jante autorisent un alignement parfait entre le corps de l' écrou (1) et le rayon. 4) Dispositif selon l'une des revendications précédantes caractérisé en ce que l'extrémité du corps de l' écrou (1) situé à l'opposé de la tête sur son axe principal est muni d'une surface ( 2-6 ) destinée à faciliter l'introduction de l' écrou (1) dans le trou du renfort (2).(2) offers the nut (1) a bearing surface SC, in that it has one or more surfaces responsible for distributing the tensile force exerted by the spoke on the rim, in that the hole is drilled to a diameter DP calibrated precisely so that the nut (1) cannot pass entirely through this hole, in that it presents all of the surfaces defined above so that the wheel once assembled, the body of the nut (1) has passed through the diameter hole DP while being on the side of the hub, the head of the nut (1) is resting on the surface SC allowing a certain rotation and is located on the side of the tire and that finally the bearing surfaces responsible for distributing the traction force on the rim allow perfect alignment between the body of the nut (1) and the spoke. 4) Device according to one of the preceding claims characterized in that the end of the body of the nut (1) located opposite the head on its main axis is provided with a surface (2-6) intended to facilitate the introduction of the nut (1) into the hole in the reinforcement (2). 5) Dispositif suivant l'une des revendications précédantes caractérisé en ce que le renfort (2) se compose d'un corps cylindrique creux ( 1-1) fermé par un fond percé et d'une collerette rabatue vers l'extérieur ( 1-2 ) dans sa partie supérieure, la collerette servant d'appui à la tête de l' écrou (1) et assurant la répartition des efforts de traction sur la jante.5) Device according to one of the preceding claims characterized in that the reinforcement (2) consists of a hollow cylindrical body (1-1) closed by a pierced bottom and a flange turned outwards (1- 2) in its upper part, the collar serving as a support for the head of the nut (1) and ensuring the distribution of the tensile forces on the rim. 6) Dispositif suivant l'une des revendications 1 à 4 caractérisé en ce que le renfort (2) est constitué d'un premier cylindre creux ( 1-1 ) équipé dans sa partie supérieure d'une collerette rabattue vers l' extérieur ( 1-2 ) qui répartit les efforts de traction sur la jante, le premier cylindre étant situé au-dessus d'un second cylindre creux de diamètre inférieur et fermé par un fond percé, les deux cylindres étant reliés entre eux par une surface SC servant d'appui à la tête de l'écrou (1), la surface SC se situant à l'opposé de la collerette sur le cylindre de grand diamètre et à l'opposé du fond percé sur le cylindre de petit diamètre. 6) Device according to one of claims 1 to 4 characterized in that the reinforcement (2) consists of a first hollow cylinder (1-1) equipped in its upper part with a flange folded towards the outside (1 -2) which distributes the traction forces on the rim, the first cylinder being located above a second hollow cylinder of smaller diameter and closed by a pierced bottom, the two cylinders being connected together by a surface SC serving as support at the head of the nut (1), the surface SC being located opposite the collar on the large diameter cylinder and opposite the pierced bottom on the small diameter cylinder.
PCT/FR2003/002609 2002-09-02 2003-08-29 Pre-assembled rim reinforcement and nut Ceased WO2004020224A1 (en)

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FR02/10817 2002-09-02
FR0210817A FR2843915A1 (en) 2002-09-02 2002-09-02 DEVICE FOR SIMULTANEOUSLY PROVIDING THE REINFORCEMENT FUNCTIONS OF RIM DRILLING AND HOLDING NUT AND OF RADIUS TENSION ADJUSTMENT ON CERTAIN BICYCLE WHEELS

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Publication number Priority date Publication date Assignee Title
DE102005049764A1 (en) * 2005-10-18 2007-04-26 Schürmann Fahrradteile GmbH & Co. KG Ring for reinforcing a spoke hole in an external belt on a hollow chamber wheel rim improves spoke nipple seating for a corresponding spoke

Citations (6)

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Publication number Priority date Publication date Assignee Title
BE493842A (en) *
FR1498599A (en) * 1966-09-02 1967-10-20 Metallurg Du Rhone Ets Eyelet for tubular rims of bicycle wheels or the like
EP0860301A1 (en) * 1997-02-21 1998-08-26 "Alesa", "l'Alliage Léger et ses Applications" N.V. Improvements at spoke-rim connections for spoke wheels
US6145937A (en) * 1999-07-13 2000-11-14 Alex Machine Industrial Co., Ltd. Bicycle wheel rim
US6216344B1 (en) * 1996-07-12 2001-04-17 Mavic S.A. Method for boring a spoke rim and for providing an insert for the bored rim
EP1167078A1 (en) * 2000-06-27 2002-01-02 Mavic S.A. Fastening device of a spoke to a rim of a bicycle wheel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE493842A (en) *
FR1498599A (en) * 1966-09-02 1967-10-20 Metallurg Du Rhone Ets Eyelet for tubular rims of bicycle wheels or the like
US6216344B1 (en) * 1996-07-12 2001-04-17 Mavic S.A. Method for boring a spoke rim and for providing an insert for the bored rim
EP0860301A1 (en) * 1997-02-21 1998-08-26 "Alesa", "l'Alliage Léger et ses Applications" N.V. Improvements at spoke-rim connections for spoke wheels
US6145937A (en) * 1999-07-13 2000-11-14 Alex Machine Industrial Co., Ltd. Bicycle wheel rim
EP1167078A1 (en) * 2000-06-27 2002-01-02 Mavic S.A. Fastening device of a spoke to a rim of a bicycle wheel

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