FR2784346A1 - Tubular frame for bicycle has triangulated frame constructed of three tube cross- section types - Google Patents
Tubular frame for bicycle has triangulated frame constructed of three tube cross- section types Download PDFInfo
- Publication number
- FR2784346A1 FR2784346A1 FR9812842A FR9812842A FR2784346A1 FR 2784346 A1 FR2784346 A1 FR 2784346A1 FR 9812842 A FR9812842 A FR 9812842A FR 9812842 A FR9812842 A FR 9812842A FR 2784346 A1 FR2784346 A1 FR 2784346A1
- Authority
- FR
- France
- Prior art keywords
- frame
- tube
- bicycle
- section
- tubular
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
- B62K19/02—Cycle frames characterised by material or cross-section of frame members
- B62K19/04—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity
- B62K19/06—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity tubular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K3/00—Bicycles
- B62K3/02—Frames
- B62K3/10—Frames of single-beam type, i.e. connecting steering head to rear axle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Description
La présente invention concerne un cadre de vélo de type poutre, réalisé à partir de tubes de trois sections différentes. Il permet par sa conception l'usage de la mme bicyclette par des cyclistes de tailles très différentes. The present invention relates to a beam type bicycle frame, produced from tubes of three different sections. By design, it allows the same bicycle to be used by cyclists of very different sizes.
Les contraintes techniques selon le mode de fabrication antérieur sont de trois : a) la réalisation des cadres de type poutre (cadre dont la partie avant de direction est reliée à la partie arrière-roue motrice par l'intermédiaire d'une pièce maîtresse continue) est préférable dans son application aux cadres tubulaires traditionnels en raison d'un meilleur rendement dynamique. Or, les cadres de type poutre réalisés antérieurement sont des modèles monobloc interdits pour l'usage en compétition par la réglementation actuelle de l'Union cycliste internationale qui impose la double triangulation du cadre. b) la fabrication de cadres de vélos tubulaires requiert traditionnellement l'emploi de tubes de six sections différentes (douille, tube diagonal, tube de selle et supérieur, bases, haubans, fourreaux). c) traditionnellement et pour des raisons morphologiques, à chaque taille de cycliste correspond une taille de cadre bien précise. Ceci implique la fabrication et le stockage de vingt cadres de taille différente pour couvrir une gamme allant de 46 à 65 cm. The technical constraints according to the previous manufacturing method are three: a) the production of beam-type frames (frame whose front steering part is connected to the rear wheel drive part via a continuous centerpiece) is preferable in its application to traditional tubular frames because of better dynamic performance. However, the beam type frames produced previously are monobloc models prohibited for use in competition by the current regulations of the International Cycling Union which requires the double triangulation of the frame. b) the manufacture of tubular bicycle frames traditionally requires the use of tubes of six different sections (socket, down tube, seat and upper tube, bases, seat stays, sheaths). c) traditionally and for morphological reasons, each size of cyclist corresponds to a specific frame size. This involves the manufacture and storage of twenty frames of different sizes to cover a range from 46 to 65 cm.
La présente invention résout à elle seule ces trois contraintes techniques. De par sa conception, le cadre selon l'invention, entre dans la classification des cadres poutres tout en restant conforme à la réglementation actuelle de l'Union cycliste internationale. Il comporte en effet une géométrie tubulaire à deux triangles. Le triangle avant est formé par le tube diagonal, le tube supérieur et le tube de selle. Le triangle arrière est formé par le tube de selle, les bases et les haubans. Par ailleurs, la présente invention, en n'utilisant que trois sections de tube différentes, permettra une application industrielle de coût réduit. La forme de ce cadre permet l'emploi de tubes plus courts et entraine donc un gain de poids important. Enfin, 1'invention supprime la notion de gamme par la création d'un modèle de taille unique. En effet, le mme cadre, grâce à l'emploi d'une longue tige de selle et d'une potence réglable, assure le positionnement parfait de tous les cyclistes. The present invention alone solves these three technical constraints. By design, the frame according to the invention is included in the classification of beam frames while remaining in accordance with the current regulations of the International Cycling Union. It indeed has a tubular geometry with two triangles. The front triangle is formed by the down tube, the upper tube and the seat tube. The rear triangle is formed by the seat tube, the bases and the seat stays. Furthermore, the present invention, by using only three different tube sections, will allow industrial application at reduced cost. The shape of this frame allows the use of shorter tubes and therefore results in a significant weight gain. Finally, the invention removes the notion of range by creating a one-size-fits-all model. Indeed, the same frame, thanks to the use of a long seatpost and an adjustable stem, ensures the perfect positioning of all cyclists.
L'image annexée illustre l'invention. II s'agit de la vue latérale d'un vélo monté à partir du cadre objet de l'invention. The attached image illustrates the invention. This is the side view of a bicycle mounted from the frame which is the subject of the invention.
En référence à cette image, le cadre du vélo est constitué de deux triangles qui, par leur configuration et leur positionnement réduisent considérablement, et aussi efficacement qu'un cadre poutre traditionnel, le couple de torsion résultant de moments induits par la force de pédalage. With reference to this image, the frame of the bicycle is made up of two triangles which, by their configuration and their positioning considerably, and as effectively as a traditional beam frame, reduce the torsional torque resulting from moments induced by the pedaling force.
Le triangle de la partie antérieure de la poutre comporte deux tubes identiques (3 et 8), cintrés permettant d'assurer sur une quinzaine de centimètres (4), l'assemblage entre le tube supérieur (3), le tube diagonal (8) et la douille (5), pour rigidifier le corps avant. The triangle of the front part of the beam has two identical tubes (3 and 8), curved allowing to ensure over fifteen centimeters (4), the assembly between the upper tube (3), the diagonal tube (8) and the sleeve (5), to stiffen the front body.
Le triangle de la partie postérieure de la poutre comporte deux tubes identiques cintrés formant les bases (6) et les haubans (1). The triangle of the posterior part of the beam comprises two identical bent tubes forming the bases (6) and the shrouds (1).
Le tube de selle (7) forme le troisième côté des triangles avant et arrière. II est réalisé dans un tube identique à celui de la douille (5). The seat tube (7) forms the third side of the front and rear triangles. It is produced in a tube identical to that of the socket (5).
Le tube diagonal (8), le tube de selle (7) et les bases (6) convergent et se fixent sur une boîte de pédalier. The down tube (8), the seat tube (7) and the bases (6) converge and are fixed on a bottom bracket.
Une longue tige de selle (2), réalisée en matériau composite complète l'invention pour permettre une utilisation universelle. A long seatpost (2), made of composite material completes the invention to allow universal use.
La fourche (9) est réalisée avec des tubes identiques à ceux utilisés pour les haubans (1) et les bases (6). The fork (9) is made with tubes identical to those used for the shrouds (1) and the bases (6).
L'usinage des tubes peut tre réalisé en série puisqu'ils sont toujours façonnés selon un seul modèle pour plusieurs éléments. Il en va de mme pour la fabrication des cadres qui nécessite l'emploi d'un gabarit unique. Selon les matériaux utilisés, l'assemblage du cadre peut tre réalisé par brasure, soudage ou collage. The tubes can be machined in series since they are always shaped according to a single model for several elements. The same goes for the manufacture of frames which requires the use of a single template. Depending on the materials used, the frame can be assembled by soldering, welding or gluing.
Dans son application industrielle, l'intért majeur de l'invention, concerne d'une part, la réduction importe du stockage des matières premières et des produits finis et d'autre part la réduction des temps et des coûts de production. In its industrial application, the main interest of the invention relates on the one hand, to the significant reduction in the storage of raw materials and finished products and on the other hand to the reduction of production times and costs.
Le cadre, selon l'invention est destiné à la fabrication de vélos de taille unique pour une utilisation universelle. The frame according to the invention is intended for the manufacture of one size bikes for universal use.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9812842A FR2784346A1 (en) | 1998-10-09 | 1998-10-09 | Tubular frame for bicycle has triangulated frame constructed of three tube cross- section types |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9812842A FR2784346A1 (en) | 1998-10-09 | 1998-10-09 | Tubular frame for bicycle has triangulated frame constructed of three tube cross- section types |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2784346A1 true FR2784346A1 (en) | 2000-04-14 |
Family
ID=9531520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9812842A Withdrawn FR2784346A1 (en) | 1998-10-09 | 1998-10-09 | Tubular frame for bicycle has triangulated frame constructed of three tube cross- section types |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2784346A1 (en) |
-
1998
- 1998-10-09 FR FR9812842A patent/FR2784346A1/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |