FR2829991A1 - Improved bicycle propulsion mechanism comprises three gears, top and bottom gears placed on central rod and central gear set back on rear rod - Google Patents

Improved bicycle propulsion mechanism comprises three gears, top and bottom gears placed on central rod and central gear set back on rear rod Download PDF

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Publication number
FR2829991A1
FR2829991A1 FR0112298A FR0112298A FR2829991A1 FR 2829991 A1 FR2829991 A1 FR 2829991A1 FR 0112298 A FR0112298 A FR 0112298A FR 0112298 A FR0112298 A FR 0112298A FR 2829991 A1 FR2829991 A1 FR 2829991A1
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rod
gears
plates
central
mechanism comprises
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FR0112298A
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FR2829991B1 (en
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Carrere Willy Dantin
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    • 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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
    • 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/02—Transmissions characterised by use of an endless chain, belt, or the like of unchangeable ratio

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Transmission Devices (AREA)

Abstract

The bicycle propulsion mechanism comprises three gears (3,4,5) located along two axes. The top and bottom gears are placed on a central rod (6) whilst the central gear is set back on the rear rod (2). The transmission chain (1) passes between the three gears.

Description

<Desc/Clms Page number 1> <Desc / Clms Page number 1>

La présente invention concerne un procédé de propulsion des bicyclettes non motorisées.  The present invention relates to a method of propelling non-motorized bicycles.

La propulsion des bicyclettes est traditionnellement réaliséé à l'aide d'un seul plateau de pédalier, ce qui rend difficile l'avancement de la bicyclette pour l'utilisateur.  The propulsion of bicycles is traditionally carried out using a single bottom bracket, which makes it difficult for the user to advance the bicycle.

Le procédé de l'invention permet de diminuer l'effort de l'utilisateur et d'accélérer la vitesse de propulsion de l'engin. Il comporte selon une première caractéristique, 3 plateaux qui permettent de réduire l'effort.  The method of the invention makes it possible to reduce the effort of the user and to accelerate the speed of propulsion of the machine. According to a first characteristic, it has 3 trays which reduce the effort.

Les plateaux sont placés l'un au dessus de l'autre, selon des axes différents par rapport à la verticale, tout en laissant un espace pour laisser passer la chaîne de transmission entre les différents plateaux. Deux plateaux sont fixés à la tige centrale, selon le mode de fixation traditionnelle des plateaux, tandis que le troisième plateau est en retrait et est fixé à la tige qui porte la selle. The plates are placed one above the other, along different axes with respect to the vertical, while leaving a space for the transmission chain to pass between the different plates. Two plates are fixed to the central rod, according to the traditional method of fixing the plates, while the third plate is recessed and is fixed to the rod carrying the saddle.

Selon des modes particuliers de réalisation : le nombre de plateaux peut être plus important que le nombre 3. les plateaux ne sont pas forcément fixés selon 2 axes. Ils peuvent être disposés de manière différente.  According to particular embodiments: the number of plates can be greater than the number 3. the plates are not necessarily fixed along 2 axes. They can be arranged differently.

- la dimension des plateaux peut-être variable.  - the size of the trays can be variable.

Le dessin annexé illustre l'invention : La figure 1 représente le dispositif de l'invention.  The accompanying drawing illustrates the invention: Figure 1 shows the device of the invention.

En référence à ce dessin, le dispositif comporte une tige centrale (6) au niveau du cadre qui porte le plateau du haut (3) et le plateau du bas (5). La tige centrale (6) est placée suivant un axe vertical. Le plateau du centre (4) est lui fixé sur la tige arrière (2). La chaîne de transmission (1) passe entre les différents plateaux ce qui permet de réduire l'effort. L'espacement entre les trois plateaux doit permettre le passage de la chaîne de transmission (1) sans difficulté. La matière de la tige centrale (6) et de la tige arrière (2) doit être suffisamment solide pour supporter la force qui s'exerce sur deux plateaux. De plus l'épaisseur des deux tiges doit être assez importante pour la même raison que précédemment.  With reference to this drawing, the device comprises a central rod (6) at the level of the frame which carries the top plate (3) and the bottom plate (5). The central rod (6) is placed along a vertical axis. The center plate (4) is attached to the rear rod (2). The transmission chain (1) passes between the various plates which reduces the effort. The spacing between the three plates must allow passage of the transmission chain (1) without difficulty. The material of the central rod (6) and the rear rod (2) must be strong enough to support the force exerted on two plates. In addition, the thickness of the two rods must be large enough for the same reason as above.

La tige centrale peut dans un autre dispositif, qui n'est pas représenté ici, être placée autrement qu'à la verticale. The central rod may in another device, which is not shown here, be placed other than vertically.

L'invention utilise le système des poulies connu en physique et est appliqué à la bicyclette. The invention uses the pulley system known in physics and is applied to the bicycle.

La chaîne de transmission dans le sens de la marche avant, passe d'abord par le plateau du haut (3), puis par le plateau du centre (4), et enfin par le plateau du bas (5) qui supporte les pédales. La chaîne de transmission est horizontale quand elle passe entre les plateaux (3), (4) et (5). The transmission chain in the forward direction, passes first through the top plate (3), then through the center plate (4), and finally through the bottom plate (5) which supports the pedals. The transmission chain is horizontal when it passes between the plates (3), (4) and (5).

<Desc/Clms Page number 2> <Desc / Clms Page number 2>

Figure img00020001
Figure img00020001

1 Le mode de fixation des plateaux est celui utilisé habituellement pour le plateau (5), la résistance de la tige centrale (6) et de la tige arrière (2) devant être renforcée par rapport au reste du cadre.1 The method of fixing the plates is that usually used for the plate (5), the resistance of the central rod (6) and the rear rod (2) having to be reinforced with respect to the rest of the frame.

Claims (4)

REVENDICATIONS 1) Dispositif de propulsion pour bicyclettes caractérisé en ce qu'il comporte 3 plateaux (3), (4) et (5) qui sont disposés selon deux axes, une tige centrale portant deux plateaux (3) et (5) la tige arrière portant quant à elle le plateau (4) qui est dans un axe en retrait, la chaîne de transmission (1) passant successivement sur les 3 plateaux. 1) propulsion device for bicycles characterized in that it comprises 3 plates (3), (4) and (5) which are arranged along two axes, a central rod carrying two plates (3) and (5) the rear rod carrying the plate (4) which is in a recessed axis, the transmission chain (1) passing successively over the 3 plates. 2) Dispositif selon la revendication 1 caractérisé en ce que la chaîne de transmission dans le sens de la marche avant, passe d'abord par le plateau du haut (3), puis par le plateau du centre (4), et enfin par le plateau du bas (5) qui supporte le pédales.  2) Device according to claim 1 characterized in that the transmission chain in the forward direction, passes first through the top plate (3), then through the center plate (4), and finally through the bottom plate (5) which supports the pedals. 3) Dispositif selon la revendication 1 ou la revendication 2 caractérisé en ce que la chaîne de transmission doit être horizontale quand elle passe entre les plateaux (3), (4) et (5).  3) Device according to claim 1 or claim 2 characterized in that the transmission chain must be horizontal when it passes between the plates (3), (4) and (5). 4) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que le mode de fixation des plateaux est celui utilisé habituellement pour le plateau du bas supportant les pédales (5), la résistance de la tige centrale (6) et de la tige arrière (2) devant être renforcée par rapport au reste. du cadre, pour la fixation des plateaux du haut (3) et du centre (4) 4) Device according to any one of the preceding claims, characterized in that the method of fixing the plates is that usually used for the bottom plate supporting the pedals (5), the resistance of the central rod (6) and of the rod rear (2) to be reinforced compared to the rest. frame, for fixing the top (3) and center (4) shelves
FR0112298A 2001-09-25 2001-09-25 DEVICE FOR IMPROVING THE PROPULSION SPEED OF BICYCLES Expired - Fee Related FR2829991B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0112298A FR2829991B1 (en) 2001-09-25 2001-09-25 DEVICE FOR IMPROVING THE PROPULSION SPEED OF BICYCLES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0112298A FR2829991B1 (en) 2001-09-25 2001-09-25 DEVICE FOR IMPROVING THE PROPULSION SPEED OF BICYCLES

Publications (2)

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FR2829991A1 true FR2829991A1 (en) 2003-03-28
FR2829991B1 FR2829991B1 (en) 2003-12-26

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FR0112298A Expired - Fee Related FR2829991B1 (en) 2001-09-25 2001-09-25 DEVICE FOR IMPROVING THE PROPULSION SPEED OF BICYCLES

Country Status (1)

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FR (1) FR2829991B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR535184A (en) * 1921-05-09 1922-04-11 Improvements to motor bicycles
FR2605697A1 (en) * 1986-10-28 1988-04-29 Vaivre Jean De Drive method using several free gears for transmitting a drive force, with or without a chain
US5577749A (en) * 1994-07-11 1996-11-26 Ross; Thomas Twin gear drive assembly for a bicycle
US5913741A (en) * 1997-09-15 1999-06-22 Balajadia; Jose P. Bicycle with three bottom bracket shells and gearing system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR535184A (en) * 1921-05-09 1922-04-11 Improvements to motor bicycles
FR2605697A1 (en) * 1986-10-28 1988-04-29 Vaivre Jean De Drive method using several free gears for transmitting a drive force, with or without a chain
US5577749A (en) * 1994-07-11 1996-11-26 Ross; Thomas Twin gear drive assembly for a bicycle
US5913741A (en) * 1997-09-15 1999-06-22 Balajadia; Jose P. Bicycle with three bottom bracket shells and gearing system

Also Published As

Publication number Publication date
FR2829991B1 (en) 2003-12-26

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Effective date: 20060531