FR2636386A1 - Elongate component of high mechanical strength, and its method of manufacture - Google Patents
Elongate component of high mechanical strength, and its method of manufacture Download PDFInfo
- Publication number
- FR2636386A1 FR2636386A1 FR8811920A FR8811920A FR2636386A1 FR 2636386 A1 FR2636386 A1 FR 2636386A1 FR 8811920 A FR8811920 A FR 8811920A FR 8811920 A FR8811920 A FR 8811920A FR 2636386 A1 FR2636386 A1 FR 2636386A1
- Authority
- FR
- France
- Prior art keywords
- inserts
- wound
- braid
- wires
- resin
- 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.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 10
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 10
- 239000000057 synthetic resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 12
- 238000006116 polymerization reaction Methods 0.000 claims description 10
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- 239000004760 aramid Substances 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000012943 hotmelt Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
- F16C7/026—Constructions of connecting-rods with constant length made of fibre reinforced resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/347—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation combined with compressing after the winding of lay-ups having a non-circular cross-section, e.g. flat spiral windings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/542—Placing or positioning the reinforcement in a covering or packaging element before or during moulding, e.g. drawing in a sleeve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/20—Land vehicles
- F16C2326/28—Bicycle propulsion, e.g. crankshaft and its support
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Moulding By Coating Moulds (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Pièce allongez résistance mécanique élevée,
et son procédé de fabrication
La présente invention concerne une pièce allon gée résistance mécanique élevée, et son procédé de fabrication.Piece lengthen high mechanical resistance,
and its manufacturing process
The present invention relates to an elongated piece with high mechanical strength, and to its manufacturing process.
La présente invention concerne particulièrement, parmi les pièces en question, les manivelles pour péda- liers de cycles. The present invention particularly relates, among the parts in question, to the cranks for bicycle pedals.
On connait actuellement les manivelles en acier forgé, lesquelles présentent une excellente rigidité, une bonne tenue la fatigue et un bon facteur de sécu- rite, mais avec l'inconvénient d'avoir une masse élevée. Currently known forged steel cranks, which have excellent rigidity, good fatigue resistance and a good safety factor, but with the disadvantage of having a high mass.
Pour y pallier, on a utilisé par suite un alliage d'aluminium à hautes performances mécaniques moule en coquille ou moulé sous pression, ou moulé et estampé chaud. On obtient alors des modules de flexion et de torsion très élevés et un gain de masse important, mais avec une perte notable de la tenue en fatigue et une forte sensibilité aux défauts de fonderie. Les manivelles de cycles étant soumises des efforts alternés très importants, il en résulte un risque considérable de cassure et donc des risques d'accidents graves pour les utilisateurs. To alleviate this, an aluminum alloy with high mechanical performance was therefore used, molded in a shell or die-cast, or molded and hot stamped. Very high bending and torsion modules are thus obtained and a significant gain in mass, but with a notable loss of the fatigue strength and a high sensitivity to foundry defects. As the cycle cranks are subjected to very large alternating forces, this results in a considerable risk of breakage and therefore risks of serious accidents for the users.
Le but de la présente invention est de remédier a ces inconvénients de la technique antérieure, et de réaliser des manivelles pour pédaliers de cycles, ou toute pièce mécanique allongée et soumise au même genre de contraintes, et permettant d'obtenir
- une rigidité élevée, égale ou supérieure celle des meilleures réalisations en alliage d'aluminium
- une masse plus faible ;
- une excellente tenue en fatigue sous efforts alternés ; et
- une excellente sécurité. The object of the present invention is to remedy these drawbacks of the prior art, and to produce cranks for pedal cranks, or any elongated mechanical part subjected to the same kind of constraints, and making it possible to obtain
- high rigidity, equal to or greater than that of the best aluminum alloy constructions
- a lower mass;
- excellent fatigue resistance under alternating forces; and
- excellent security.
Bien entendu, la structure de cette pièce conforme a l'invention devra permettre d'assurer la liaison mécanique avec d'autres organes. Of course, the structure of this part in accordance with the invention should make it possible to provide mechanical connection with other organs.
Dans le cas d'une manivelle pour pédalier de cycle, il s'agira d'assurer à une extrémité la liaison par carré sur l'axe du pédalier, et a l'autre extrémité la liaison par filetage sur l'axe de la pédale. In the case of a crank for cycle pedals, it will be a question of ensuring at one end the connection by square on the axis of the pedal, and at the other end the connection by threading on the axis of the pedal .
Dans ce type d'application, il conviendra tout particulièrement d'obtenir une excellente rigidité en traction, en compression et en flexion suivant les deux axes principaux de la pièce, et une excellente rigidité en torsion. In this type of application, it will very particularly be necessary to obtain excellent rigidity in traction, compression and bending along the two main axes of the part, and excellent torsional rigidity.
En effet, les efforts de torsion sur une manivelle de'pédalier de cycle sont très importants, du fait de l'application d'un effort en porte-a-faux de la pédale sur la manivelle. Indeed, the torsional forces on a crank de'pédalier cycle are very important, due to the application of a force overhanging the pedal on the crank.
L'ensemble de ces conditions a conduit à penser utiliser la technique connue des matériaux composites, mettant en oeuvre des fils d'un matériau à haut module d'élasticité, tels que des fils de carbone, verre, kevlar et analogues, bobinés entre deux inserts, métalli- ques ou non, permettant d'assurer les liaisons mécaniques précitées, ces fils étant noyés dans une résine synthétique polymérisée. All of these conditions have led to the idea of using the known technique of composite materials, using threads of a material with a high modulus of elasticity, such as threads of carbon, glass, kevlar and the like, wound between two inserts, metallic or not, making it possible to ensure the above-mentioned mechanical connections, these wires being embedded in a polymerized synthetic resin.
L'invention consiste plus particulièrement a adapter cette technique connue å la fabrication des pièces allongées dont il a été parle plus haut, et plus spécialement des manivelles pour pédaliers de cycles. The invention consists more particularly in adapting this known technique to the manufacture of the elongated parts of which it has been spoken above, and more especially of the cranks for cycle pedals.
Pour ce faire, une pièce allongée du type cons titubé de fils d'un matériau a haut module d'élasticité bobinés entre deux inserts extrêmes, ces fils étant noyés dans une résine synthétique polymérisée, conforme à l'invention, sera essentiellement caractérisée en ce que lesdits inserts comportent chacun deux flasques latéraux définissant d'une part des gorges pour le guidage des fils lors de leur bobinage, et d'autre part des surfaces d'appui et d'adhérence latérales pour les extrémités respectives de la nappe bobinée. To do this, an elongated piece of the type cons staggered with wires of a material with high modulus of elasticity wound between two extreme inserts, these wires being embedded in a polymerized synthetic resin, in accordance with the invention, will be essentially characterized in that that said inserts each comprise two lateral flanges defining on the one hand grooves for guiding the wires during their winding, and on the other hand lateral support and adhesion surfaces for the respective ends of the wound ply.
On obtiendra ainsi l'excellente résistance mécanique souhaitée, et notamment une excellente résistance a la torsion, se traduisant, aux extrémités de la pièce, par l'élimination de tout risque de fissure ou de décollement ; latéralement, les flasques maintiendront parfaitement les nappes de fils bobinés b l'encontre des efforts de torsion, et fourniront une surface d'adhésion aussi importante que souhaitable. Ces flasques permettront également d'obtenir une excellente reprise des efforts de flexion, en particulier dans le plan de plus faible inertie de la pièce. This will give the excellent mechanical resistance desired, and in particular excellent resistance to torsion, resulting, at the ends of the part, by the elimination of any risk of cracking or delamination; laterally, the flanges will perfectly maintain the plies of wound wires against torsional forces, and will provide as large an adhesion surface as is desirable. These flanges will also make it possible to obtain an excellent recovery of the bending forces, in particular in the plane of lower inertia of the part.
Les fils ou fibres, une fois la résine polyméri suée, formeront une liaison continue entre les deux in sert s et réaliseront un ensemble composite monobloc et continu présentant directement les rigidités voulues en traction, compression et flexion suivant les deux axes, ces rigidités étant conférées à la pièce par les modules en traction et en compression des fibres utilisées. The yarns or fibers, once the polymerized resin has sweated, will form a continuous connection between the two inserts and will produce a one-piece and continuous composite assembly directly presenting the desired rigidities in tension, compression and bending along the two axes, these rigidities being imparted to the piece by the tensile and compression modules of the fibers used.
Pour garantir au maximum l'obtention de l'effet recherché, il est encore avantageux de prévoir que, sur au moins une face latérale, le flasque, b une ou aux deux extrémités, s'étend sur toute la longueur de l'insert. To guarantee as much as possible the desired effect, it is also advantageous to provide that, on at least one lateral face, the flange, b at one or both ends, extends over the entire length of the insert.
Avantageusement aussi, la pièce est revêtue d'au moins une tresse en un matériau à haut module d'élasti- cité, imprégnée d'une résine synthétique polymérisée, cette tresse se présentant commodément sous la forme d'une gaine enfilée sur la nappe bobinée et recouvrant les inserts. Advantageously also, the part is coated with at least one braid made of a material with a high modulus of elasticity, impregnated with a polymerized synthetic resin, this braid being conveniently in the form of a sheath threaded on the wound web. and covering the inserts.
De préférence, les fils de la tresse une fois en place font entre eux des angles compris entre f 25 et + 45", par rapport å l'axe de la pièce. Preferably, the braid wires once in place form angles between them f 25 and + 45 ", relative to the axis of the part.
Cette tresse, en une ou plusieurs couches, contribue encore à l'obtention d'une excellente résistance en torsion et confère å la pièce un aspect et une finition parfaits. This braid, in one or more layers, further contributes to obtaining excellent torsional strength and gives the piece a perfect appearance and finish.
Selon encore une autre caractéristique de l'invention, ledit matériau å haut module d'elasticite est réalisé à partir de fibres de carbone ou de fibres aramides ou analogues, et la résine synthétique est du type thermofusible ou thermodurcissable à hautes performances, du genre epoxy ou analogue. According to yet another characteristic of the invention, said material with high elasticity modulus is produced from carbon fibers or aramid fibers or the like, and the synthetic resin is of the high performance hot-melt or thermosetting type, of the epoxy type. or the like.
On peut prévoir de plus, à l'intérieur de ladite nappe de fils bobinés, un remplissage en mousse, ceci pour augmenter l'inertie à la flexion de la pièce, dont la partie résistante a alors une forme tubulaire. One can also provide, inside said ply of wound wires, a foam filling, this to increase the inertia to bending of the part, the resistant part of which then has a tubular shape.
Lorsqu'une pièce conforme à l'invention est con çue pour constituer une manivelle de pédalier de cycle, elle peut encore se caractériser en ce qu'elle comporte des inserts en alliage d'aluminium à hautes performances, l'un présentant, pour sa fixation sur le plateau du pédalier, un col fileté en saillie sur une face de la pièce et étant traversé d'un trou a section carrée pour sa fixation sur l'axe du pédalier, et l'autre étant traversé d'un trou taraudé pour la fixation de la pédale. When a part according to the invention is designed to constitute a cycle crank crank, it can also be characterized in that it includes inserts made of high-performance aluminum alloy, one having, for its attachment to the bottom bracket, one threaded neck projecting from one side of the part and being traversed by a square section hole for attachment to the bottom bracket axle, and the other being traversed by a tapped hole for fixing the pedal.
L'invention concerne encore un procédé de fabrication d'une pièce allongée et plus spécifiquement d'une manivelle pour pédalier de cycle comportant une ou plusieurs des caractéristiques qui viennent d'être defi- nies. The invention also relates to a method of manufacturing an elongated part and more specifically a crank for a cycle crankset comprising one or more of the characteristics which have just been defined.
D'une façon générale, ce procédé se caractérise en ce que l'on positionne précisément les deux inserts l'un par rapport a l'autre, en ce que l'on bobine dessus lesdits fils du matériau a haut module d'élasticité, ces fils étant imprégnés d'une résine synthétique polymérisée, et en ce que l'on polymérise cette résine. In general, this process is characterized in that the two inserts are positioned precisely one relative to the other, in that said strands of material with high elasticity are wound on them, these wires being impregnated with a polymerized synthetic resin, and in that this resin is polymerized.
L'opération de bobinage peut être réalisée par enroulement de plusieurs tours de fils sur les inserts ou par enroulement sur les inserts, en un ou plusieurs tours, d'une nappe ou ruban constitué d'un certain nombre de fils parallèles, ce ruban ayant une largeur égale à l'espacement entre les deux flasques de chaque insert. The winding operation can be carried out by winding several turns of son on the inserts or by winding on the inserts, in one or more turns, of a sheet or ribbon made up of a certain number of parallel wires, this ribbon having a width equal to the spacing between the two flanges of each insert.
Les fils, quel que soit leur mode d'enroulement, peuvent être préimprégnés ou enduits de résine par une opération effectuée avant le bobinage. The threads, whatever their winding mode, can be prepreg or coated with resin by an operation carried out before the winding.
Avantageusement, la polymérisation de la résine imprégnant les fils bobinés est assurée dans un outillage maintenant le positionnement relatif correct des deux inserts et assurant l'application d'une pression parallèlement aux nappes pendant ladite polymérisation, ce qui permettra d'obtenir une pièce de cotes précises. Advantageously, the polymerization of the resin impregnating the wound wires is ensured in a tool maintaining the correct relative positioning of the two inserts and ensuring the application of pressure parallel to the layers during said polymerization, which will make it possible to obtain a piece of dimensions. precise.
Après polymérisation des nappes de fils, on revêt la pièce d'une ou de plusieurs tresses de fil à haut module d'élasticité, on imprègne la tresse de résine, et l'on effectue la polymérisation finale dans un moule métallique pourvu de moyens de chauffage et de refroidissement, assurant ainsi l'aspect et la géométrie externe de la pièce. After polymerization of the plies of son, the part is coated with one or more braids of wire with a high elasticity modulus, the braid is impregnated with resin, and the final polymerization is carried out in a metal mold provided with means of heating and cooling, thus ensuring the appearance and external geometry of the room.
On peut prévoir que la résine thermodurcissable est injectée dans un moule fermé contenant la pièce revêtue de sa tresse ou, à titre de variante, que la résine thermodurcissable est mise en place dans un moule ouvert, avant et après mise en place de la pièce revêtue de sa tresse, le moule étant ensuite fermé et mis en pression, ensuite de quoi on procède å la polymérisation. It can be provided that the thermosetting resin is injected into a closed mold containing the part coated with its braid or, as a variant, that the thermosetting resin is placed in an open mold, before and after placing the coated part. of its braid, the mold then being closed and pressurized, after which the polymerization is carried out.
Une manivelle pour pédalier de cycle réalisée conformément a l'invention est représentée à titre d'exemple sur le dessin annexé dans lequel
- la figure 1 représente la manivelle de profil ; et
- la figure 2 représente la manivelle en plan avec vue en coupe de sa partie centrale. A crank for cycle pedals produced in accordance with the invention is shown by way of example in the accompanying drawing in which
- Figure 1 shows the profile crank; and
- Figure 2 shows the crank in plan with sectional view of its central part.
Sur les figures, on a référencé 1 l'insert destiné à la fixation à l'axe du pédalier, et 2 celui destiné à la fixation de la pédale. Leurs flasques latéraux respectifs ont été référencés la, lb et 2a, 2b. In the figures, reference has been made to 1 the insert intended for fixing to the axle of the crankset, and 2 that intended for fixing the pedal. Their respective lateral flanges have been referenced la, lb and 2a, 2b.
L'insert 1 est pourvu d'un col 3 fileté en 4 et est traversé d'un trou carré 5 propre a le caler en rotation sur l'axe du pédalier. Un écrou vissé sur la partie filetée 4 permettra de fixer la manivelle sur le plateau denté du pédalier, lequel pourra également être réalisé en fibres de carbone. Cette fixation pourra être complétée dans ce cas par un collage de l'extrémité de manivelle sur le plateau. The insert 1 is provided with a neck 3 threaded at 4 and is traversed by a square hole 5 suitable for wedging it in rotation on the axis of the crankset. A nut screwed onto the threaded part 4 will fix the crank to the chainring of the crankset, which may also be made of carbon fibers. This fixing can be completed in this case by gluing the crank end to the plate.
Le calage sur en rotation pourra être assuré entre ces deux pièces par une goupille excentrée traversant la manivelle parallèlement à son axe de rotation et fixée dans le plateau. The setting on rotation can be ensured between these two parts by an eccentric pin passing through the crank parallel to its axis of rotation and fixed in the plate.
Quant à la pédale, elle sera fixée par vissage dans un trou taraudé 6 de l'insert 2. As for the pedal, it will be fixed by screwing in a tapped hole 6 of the insert 2.
Enfin, on a référencé 7 les nappes de fibres bobinées unidirectionnelles (au nombre d'une vingtaine), 8 les tresses de revêtement (par exemple au nombre de trois), et 9 un remplissage en mousse de polvuréthane. Finally, reference has been made to 7 the unidirectional wound plies of fibers (twenty in number), 8 the covering braids (for example three in number), and 9 a filling of polyurethane foam.
Il est à noter que pour mieux montrer les inserts, qui de préférence sont complètement entourés par la tresse, on n'a représenté celle-ci que partiellement, au niveau de la partie centrale coupée de la figure 2. It should be noted that in order to better show the inserts, which are preferably completely surrounded by the braid, the latter has only been shown partially, at the level of the cut central part of FIG. 2.
Claims (19)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8811920A FR2636386A1 (en) | 1988-09-13 | 1988-09-13 | Elongate component of high mechanical strength, and its method of manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8811920A FR2636386A1 (en) | 1988-09-13 | 1988-09-13 | Elongate component of high mechanical strength, and its method of manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2636386A1 true FR2636386A1 (en) | 1990-03-16 |
Family
ID=9369939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8811920A Withdrawn FR2636386A1 (en) | 1988-09-13 | 1988-09-13 | Elongate component of high mechanical strength, and its method of manufacture |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2636386A1 (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994006619A1 (en) * | 1992-09-14 | 1994-03-31 | John Kenton Britten | Structural and other components, method of manufacture |
| WO1996012898A1 (en) * | 1994-10-24 | 1996-05-02 | SGF SüDDEUTSCHE GELENKSCHEIBENFABRIK GMBH & CO. KG | Process for manufacturing joint disks |
| DE19601125A1 (en) * | 1996-01-13 | 1997-07-17 | Thun Alfred & Co Gmbh | Pedal crank for a bicycle |
| WO1997043167A1 (en) * | 1996-05-14 | 1997-11-20 | Markus Storck | Bicycle crank |
| EP0988216A4 (en) * | 1997-06-18 | 2000-12-06 | Raphael Schlanger | Bicycle crankshaft assembly |
| EP1270393A1 (en) * | 2001-06-27 | 2003-01-02 | Campagnolo S.R.L. | Bicycle crank and method for manufacturing said crank |
| EP1270394A1 (en) * | 2001-06-27 | 2003-01-02 | Campagnolo Srl | Bicycle crank and method for manufacturing said crank |
| WO2003000543A1 (en) * | 2001-06-25 | 2003-01-03 | Stefano Segato | Method for manufacturing a crank structure for bicycles and similar vehicles as well as crank structure obtained with this method |
| US6564675B1 (en) * | 2002-07-23 | 2003-05-20 | Cheng-Xun Jiang | Crank arm for bicycles |
| EP1281609A3 (en) * | 2001-08-03 | 2003-10-15 | Campagnolo S.R.L. | Process for the production of a crank lever for a bicycle |
| EP1350147A4 (en) * | 2000-10-19 | 2005-12-07 | Bruno Mombrinie | Bicycle crank set |
| EP1798428A1 (en) * | 2005-12-13 | 2007-06-20 | EADS Deutschland GmbH | Braided composite part |
| EP1818251A1 (en) * | 2006-02-14 | 2007-08-15 | CAMPAGNOLO S.r.l. | Bicycle pedal crank, intermediate product and method for manufacturing such a pedal crank |
| CN100335347C (en) * | 2001-06-27 | 2007-09-05 | 坎培诺洛有限公司 | Bicycle crank and method for producing same |
| EP1486413B1 (en) * | 2003-06-11 | 2010-04-28 | Campagnolo S.R.L. | Method for manufacturing a bicycle component |
| WO2013085723A1 (en) * | 2011-12-07 | 2013-06-13 | E. I. Du Pont De Nemours And Company | Composite article made with unidirectional fiber reinforced tape |
| US8707823B2 (en) | 2003-06-10 | 2014-04-29 | Campagnolo S.R.L. | Bicycle component and method for making such a component |
| US8863616B2 (en) | 2006-02-14 | 2014-10-21 | Campagnolo S.R.L. | Bicycle pedal crank, intermediate product and method for manufacturing such a pedal crank |
| CN105364500A (en) * | 2015-11-19 | 2016-03-02 | 胡发贤 | Automatic crank machining machine |
| WO2024099916A1 (en) | 2022-11-10 | 2024-05-16 | Miranda & Irmão Lda. | Crank arm and crank arm assembly for a bicycle as well as production process for said crank arm |
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| US4183261A (en) * | 1976-12-21 | 1980-01-15 | Messerschmitt-Bolkow-Blohm Gmbh | Shackle |
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| US2602766A (en) * | 1948-04-10 | 1952-07-08 | Richard J Francis | Reinforced plastic rods and methods of making same |
| US3056167A (en) * | 1958-07-16 | 1962-10-02 | Proman Inc | Mold for high strength members |
| FR1320747A (en) * | 1960-11-15 | 1963-03-15 | Plast Anstalt | Method and device for manufacturing articles in reinforced synthetic material having recessed parts as well as the article conforming or similar to those obtained |
| US3553978A (en) * | 1969-10-06 | 1971-01-12 | Gen Motors Corp | Composite propeller shaft construction and method of making |
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| DE3317046A1 (en) * | 1983-05-10 | 1984-11-15 | Robert Bosch Gmbh, 7000 Stuttgart | Connecting rod and process for the manufacture thereof |
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Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5578154A (en) * | 1992-09-14 | 1996-11-26 | Britten; John K. | Method of manufacturing a spoked wheel |
| WO1994006619A1 (en) * | 1992-09-14 | 1994-03-31 | John Kenton Britten | Structural and other components, method of manufacture |
| WO1996012898A1 (en) * | 1994-10-24 | 1996-05-02 | SGF SüDDEUTSCHE GELENKSCHEIBENFABRIK GMBH & CO. KG | Process for manufacturing joint disks |
| US5766675A (en) * | 1994-10-24 | 1998-06-16 | Sgf Suddeutsche Gelenkscheibenfabrik Gmbh & Co. Kg | Method for manufacturing flexible disks |
| CN1063535C (en) * | 1994-10-24 | 2001-03-21 | 南德盘形接轴节工厂股份有限公司 | Spring joint disk mfg. method |
| DE19601125A1 (en) * | 1996-01-13 | 1997-07-17 | Thun Alfred & Co Gmbh | Pedal crank for a bicycle |
| DE19601125C2 (en) * | 1996-01-13 | 1999-01-28 | Thun Alfred & Co Gmbh | Pedal crank for a bike |
| WO1997043167A1 (en) * | 1996-05-14 | 1997-11-20 | Markus Storck | Bicycle crank |
| US6202506B1 (en) | 1996-05-14 | 2001-03-20 | Storck Bicycle Gmbh | Bicycle crank |
| EP0988216A4 (en) * | 1997-06-18 | 2000-12-06 | Raphael Schlanger | Bicycle crankshaft assembly |
| EP1350147A4 (en) * | 2000-10-19 | 2005-12-07 | Bruno Mombrinie | Bicycle crank set |
| WO2003000543A1 (en) * | 2001-06-25 | 2003-01-03 | Stefano Segato | Method for manufacturing a crank structure for bicycles and similar vehicles as well as crank structure obtained with this method |
| US7000499B2 (en) | 2001-06-27 | 2006-02-21 | Campagnolo, S.R.L. | Bicycle crank and method for manufacturing said crank |
| EP1270394A1 (en) * | 2001-06-27 | 2003-01-02 | Campagnolo Srl | Bicycle crank and method for manufacturing said crank |
| EP1270393A1 (en) * | 2001-06-27 | 2003-01-02 | Campagnolo S.R.L. | Bicycle crank and method for manufacturing said crank |
| US7013753B2 (en) | 2001-06-27 | 2006-03-21 | Campagnolo S.R.L. | Bicycle crank and method for manufacturing said crank |
| CN100335347C (en) * | 2001-06-27 | 2007-09-05 | 坎培诺洛有限公司 | Bicycle crank and method for producing same |
| EP1669285A3 (en) * | 2001-06-27 | 2009-02-18 | CAMPAGNOLO S.r.l. | Bicycle crank and method for manufacturing said crank |
| EP1281609A3 (en) * | 2001-08-03 | 2003-10-15 | Campagnolo S.R.L. | Process for the production of a crank lever for a bicycle |
| EP1864904A3 (en) * | 2001-08-03 | 2011-11-16 | Campagnolo S.r.l. | Crank lever for a bicycle |
| US6564675B1 (en) * | 2002-07-23 | 2003-05-20 | Cheng-Xun Jiang | Crank arm for bicycles |
| US8707823B2 (en) | 2003-06-10 | 2014-04-29 | Campagnolo S.R.L. | Bicycle component and method for making such a component |
| US8024993B2 (en) | 2003-06-11 | 2011-09-27 | Campagnolo, S.R.L. | Bicycle component and method for manufacturing such a component |
| US10105916B2 (en) | 2003-06-11 | 2018-10-23 | Campagnolo S.R.L. | Bicycle component and method for manufacturing such a component |
| EP1486413B1 (en) * | 2003-06-11 | 2010-04-28 | Campagnolo S.R.L. | Method for manufacturing a bicycle component |
| EP1798428A1 (en) * | 2005-12-13 | 2007-06-20 | EADS Deutschland GmbH | Braided composite part |
| US7691300B2 (en) | 2005-12-13 | 2010-04-06 | Eads Deutschland Gmbh | Composite fiber component produced by braiding |
| US7597953B2 (en) | 2005-12-13 | 2009-10-06 | Eads Deutschland Gmbh | Composite fiber component produced by braiding |
| US8863616B2 (en) | 2006-02-14 | 2014-10-21 | Campagnolo S.R.L. | Bicycle pedal crank, intermediate product and method for manufacturing such a pedal crank |
| EP1818251A1 (en) * | 2006-02-14 | 2007-08-15 | CAMPAGNOLO S.r.l. | Bicycle pedal crank, intermediate product and method for manufacturing such a pedal crank |
| WO2013085723A1 (en) * | 2011-12-07 | 2013-06-13 | E. I. Du Pont De Nemours And Company | Composite article made with unidirectional fiber reinforced tape |
| CN105364500A (en) * | 2015-11-19 | 2016-03-02 | 胡发贤 | Automatic crank machining machine |
| WO2024099916A1 (en) | 2022-11-10 | 2024-05-16 | Miranda & Irmão Lda. | Crank arm and crank arm assembly for a bicycle as well as production process for said crank arm |
| DE102022129801A1 (en) * | 2022-11-10 | 2024-05-16 | MIRANDA & IRMÃO, LDª | Crank arm and crank arm assembly for a bicycle |
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