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FR2573012A1 - Bicycle rim with high mechanical strength and low weight - Google Patents

Bicycle rim with high mechanical strength and low weight Download PDF

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Publication number
FR2573012A1
FR2573012A1 FR8413024A FR8413024A FR2573012A1 FR 2573012 A1 FR2573012 A1 FR 2573012A1 FR 8413024 A FR8413024 A FR 8413024A FR 8413024 A FR8413024 A FR 8413024A FR 2573012 A1 FR2573012 A1 FR 2573012A1
Authority
FR
France
Prior art keywords
rim
metal
spoke
mechanical strength
high mechanical
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
FR8413024A
Other languages
French (fr)
Other versions
FR2573012B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR8413024A priority Critical patent/FR2573012B1/en
Priority to PCT/FR1985/000225 priority patent/WO1986001463A1/en
Priority to AT85904006T priority patent/ATE50736T1/en
Priority to EP85904006A priority patent/EP0191811B1/en
Priority to DE8585904006T priority patent/DE3576310D1/en
Priority to US06/862,352 priority patent/US4741578A/en
Priority to JP60503571A priority patent/JPS61503023A/en
Publication of FR2573012A1 publication Critical patent/FR2573012A1/en
Application granted granted Critical
Publication of FR2573012B1 publication Critical patent/FR2573012B1/en
Expired 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
    • B60B5/00—Wheels, spokes, disc bodies, rims, hubs, wholly or predominantly made of non-metallic material
    • B60B5/02—Wheels, spokes, disc bodies, rims, hubs, wholly or predominantly made of non-metallic material made of synthetic material
    • 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
    • B60B1/003—Spoked wheels; Spokes thereof specially adapted for bicycles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to devices enabling carbon fibres 1 combined with resins forming a composite whose lightness is noteworthy to be used in the manufacture of bicycle wheel rims. In order to avoid the risk of the fibres splintering and giving rise to the collapse of the wheel in the event of impact, a circular metal plate 3 increases the cohesion of the fibre-metal-spoke 6 and spoke nut 5 introduced by the circular drilling 4. In order to overcome the poor tear resistance of the carbon fibres during the friction of the brake blocks, rings 2 made from metal or other materials are fixed to the lateral walls of the rim.

Description

Jante de bicyclette à grande résistance
mécanique et de faible poids
I1 est clair que plus une bicyclette est légère, meilleures seront les performances du cycliste. Pour alléger l'ensemble de la bicyclette, il faut en alléger les éléments constitutifs mais il ne faut pas rendre l'ensemble fragile.High resistance bicycle rim
mechanical and light weight
It is clear that the lighter a bicycle, the better the performance of the cyclist. To lighten the whole of the bicycle, it is necessary to lighten the constituent elements but it is not necessary to make the whole fragile.

Ainsi, on peut alléger successivement cadre, guidon, roue. Thus, we can successively lighten the frame, handlebars, wheel.

L'allégement des roues d'une bicyclette présente pour l'utilisateur des avantages importants non seulement pour une raison de moindre poids à entraîner mais aussi pour une raison de maintien de l'équilibre pour le cycliste : plus la roue avant est légère, meilleure est l'équilibre. The lightening of the wheels of a bicycle has significant advantages for the user not only for a reason of less weight to train but also for a reason of maintaining balance for the cyclist: the lighter the front wheel, the better is balance.

Pour alléger la jante, on peut envisager d'utiliser les fibres de carbone associés à des résines, mais celles-ci présentent deux défauts : lorsqu'elles se brisent, elles entraient la destruction brutale et presque complète de la jante, pouvant provoquer la chute du cycliste ; enfin les fibres de carbone s'usent rapidement au frottement des patins de freinage. To lighten the rim, we can consider using carbon fibers associated with resins, but these have two defects: when they break, they enter the brutal and almost complete destruction of the rim, which can cause the fall cyclist; finally the carbon fibers wear out quickly with friction of the brake pads.

Les dispositifs selon l'invention remédient à ces inconvénients en permettant l'utilisation des fibres de carbone pour alléger la jante en associant un support métallique en couronne assurant une bonne cohésion fibres-métal-rayons de roue et un rev8tement sur les faces latérales gauche et droite périphériques composé soit de métal, soit de produits présentant une bonne tenue aux frottements des patins de freinage. The devices according to the invention remedy these drawbacks by allowing the use of carbon fibers to lighten the rim by combining a metal support in a crown ensuring good fiber-metal-wheel spoke cohesion and a coating on the left side faces and peripheral right composed either of metal or of products having good resistance to friction of the brake pads.

Pour bien faire comprendre l'invention, on en décrira ci-après brièvement un exemple d'exécution sans caractère limitatif, en référence aux dessins schématiques annexés dans lesquels - la figure 1 est une coupe en tranche de la jante. Sur cette figure, on a indiqué en 1 les fibres de carbone associées à des résines, en 2 les plaques métalliques, ou d'une autre matière (vernis, peinture, plastique), posées sur les faces extérieures droite et gauche, latérales, de la jante et destinées à recevoir le frottement des patins de freinage.  In order to make the invention clear, we will briefly describe below an exemplary embodiment thereof without limitation, with reference to the appended schematic drawings in which - Figure 1 is a section in slice of the rim. In this figure, we have indicated in 1 the carbon fibers associated with resins, in 2 the metal plates, or of another material (varnish, paint, plastic), placed on the external right and left sides, of the rim and intended to receive the friction of the brake pads.

- en 3, la face supérieure de la jante sur laquelle viendra s'appliquer le boyau.- In 3, the upper face of the rim on which the tire will be applied.

- en 4, le creux, vide interne de la jante.- in 4, the hollow, internal void of the rim.

- en 5, la plaque métallique, ici représentée plane mais pouvant avoir toute autre espèce de profil, lui assurant une meilleure rigidité et une meilleure tenue aux efforts de torsion ou de cisaillement.- In 5, the metal plate, shown here flat but may have any other kind of profile, ensuring better rigidity and better resistance to torsional or shear forces.

La figure 2 montre en 1 le trou circulaire par lequel viendra passer la valve de gonflage du boyau. Figure 2 shows in 1 the circular hole through which will pass the hose inflation valve.

Le figure 3 présente la réalisation d'un montage d'un rayon, montrant en 1 le trou par lequel est introduit l'écrou de serrage du rayon. On observe que l'axe de ce perçage fait un angle o( degré avec l'axe de la jante. En 2, l'écrou de serrage du rayon dont la face d'appui fait elle aussi un angle w degrés avec l'axe de la plaque métallique. Les rayons sont montrés alternativement à droite et à gauche de l'axe de la jante sleon une disposition couramment utilisée. En 3, une coupe de l'extrémité filetée du rayon engagé dans l'écrou de serrage. L'angle t est fonction du rayon de la jante et de la largeur de l'axe de la roue.  Figure 3 shows the realization of a spoke assembly, showing in 1 the hole through which the spoke clamping nut is introduced. It is observed that the axis of this bore makes an angle o (degree with the axis of the rim. In 2, the tightening nut of the spoke whose bearing face also makes an angle w degrees with the axis of the metal plate. The spokes are shown alternately to the right and to the left of the rim axis according to a commonly used arrangement. In 3, a section of the threaded end of the spoke engaged in the tightening nut. angle t is a function of the radius of the rim and the width of the wheel axis.

Claims (3)

REVENDICATIONS 1. Ensemble de matieres composites constituant une jante de roue de bicyclette caractérisé en ce qu'il comprend des fibres de carbonne-lSl) dia poses autour d'une couronne métallique (5) assurant la cohésion de Pensem- ble. 1. Set of composite materials constituting a bicycle wheel rim, characterized in that it comprises carbon fibers (lSl) dia posed around a metal crown (5) ensuring the cohesion of thought. 2. Ensemble de matériaux selon la revendication 1 caractévisé en ce que la couronne métallique (5) peut avoir une forme plane ou un autre profil lui assurant une meilleure rigidité ou une meilleure tenue aux efforts de torsion ou cisaillement.2. Set of materials according to claim 1 characterized in that the metal crown (5) may have a flat shape or another profile ensuring better rigidity or better resistance to torsional or shear forces. 3. Ensemble composite selon la revendication 1 caractérisée en ce que les périphéries extérieures droite et gauche (2) de la jante supportent une surface métallique ou un vernis, une peinture, un pIastique resistant bien au frottement des patins de freinage. 3. Composite assembly according to claim 1 characterized in that the right and left outer peripheries (2) of the rim support a metal surface or a varnish, a paint, a plastic resistant to friction of the brake pads.
FR8413024A 1984-08-21 1984-08-21 BICYCLE WHEEL WITH HIGH MECHANICAL STRENGTH AND LOW WEIGHT Expired FR2573012B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR8413024A FR2573012B1 (en) 1984-08-21 1984-08-21 BICYCLE WHEEL WITH HIGH MECHANICAL STRENGTH AND LOW WEIGHT
PCT/FR1985/000225 WO1986001463A1 (en) 1984-08-21 1985-08-19 Assembly of composite materials forming a spoke wheel rim
AT85904006T ATE50736T1 (en) 1984-08-21 1985-08-19 FIBER COMPOSITE MATERIAL FOR WHEEL RIM.
EP85904006A EP0191811B1 (en) 1984-08-21 1985-08-19 Assembly of composite materials forming a spoke wheel rim
DE8585904006T DE3576310D1 (en) 1984-08-21 1985-08-19 FIBER COMPOSITE FOR SPOKE WHEEL RIM.
US06/862,352 US4741578A (en) 1984-08-21 1985-08-19 Assembly of composite materials forming a spoke wheel rim
JP60503571A JPS61503023A (en) 1984-08-21 1985-08-19 wheel rim with spokes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8413024A FR2573012B1 (en) 1984-08-21 1984-08-21 BICYCLE WHEEL WITH HIGH MECHANICAL STRENGTH AND LOW WEIGHT

Publications (2)

Publication Number Publication Date
FR2573012A1 true FR2573012A1 (en) 1986-05-16
FR2573012B1 FR2573012B1 (en) 1989-04-07

Family

ID=9307137

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8413024A Expired FR2573012B1 (en) 1984-08-21 1984-08-21 BICYCLE WHEEL WITH HIGH MECHANICAL STRENGTH AND LOW WEIGHT

Country Status (2)

Country Link
JP (1) JPS61503023A (en)
FR (1) FR2573012B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6991300B2 (en) 2002-07-31 2006-01-31 James Colegrove Optimum compaction low void composite bicycle wheel rim
US8002362B2 (en) 2004-02-17 2011-08-23 Trek Bicycle Corporation Optimal thermal properties in light weight and high performance braking composite clincher or tubular tire bicycle wheel rim

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR806474A (en) * 1936-03-14 1936-12-17 Improvement of rims for cycles
FR993303A (en) * 1949-06-17 1951-10-30 Rim for cycles or similar vehicles
FR994459A (en) * 1949-07-02 1951-11-16 Solid rim for cycles or similar vehicles
FR1289921A (en) * 1960-07-21 1962-04-06 Fichtel & Sachs Ag Metal spoked wheel for tubeless tires
FR1332603A (en) * 1962-05-24 1963-07-19 Michelin & Cie Improvement to non-metallic cast rims for spoked wheels
US4030754A (en) * 1976-01-21 1977-06-21 Hercules Incorporated Composite lightweight wheel rim
NL7906928A (en) * 1979-09-18 1981-03-20 Schothorst Bv Bicycle wheel rim of polyamide bonded glass fibre - of two half mouldings clipped and ultrasonically welded

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR806474A (en) * 1936-03-14 1936-12-17 Improvement of rims for cycles
FR993303A (en) * 1949-06-17 1951-10-30 Rim for cycles or similar vehicles
FR994459A (en) * 1949-07-02 1951-11-16 Solid rim for cycles or similar vehicles
FR1289921A (en) * 1960-07-21 1962-04-06 Fichtel & Sachs Ag Metal spoked wheel for tubeless tires
FR1332603A (en) * 1962-05-24 1963-07-19 Michelin & Cie Improvement to non-metallic cast rims for spoked wheels
US4030754A (en) * 1976-01-21 1977-06-21 Hercules Incorporated Composite lightweight wheel rim
NL7906928A (en) * 1979-09-18 1981-03-20 Schothorst Bv Bicycle wheel rim of polyamide bonded glass fibre - of two half mouldings clipped and ultrasonically welded

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6991300B2 (en) 2002-07-31 2006-01-31 James Colegrove Optimum compaction low void composite bicycle wheel rim
US8002362B2 (en) 2004-02-17 2011-08-23 Trek Bicycle Corporation Optimal thermal properties in light weight and high performance braking composite clincher or tubular tire bicycle wheel rim

Also Published As

Publication number Publication date
FR2573012B1 (en) 1989-04-07
JPS61503023A (en) 1986-12-25

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