FR2640577A1

FR2640577A1 - Device for recovering energy, particularly for a bicycle

Info

Publication number: FR2640577A1
Application number: FR8908341A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-12-16
Filing date: 1989-06-22
Publication date: 1990-06-22
Also published as: IT1234399B; IT8967495A0; ES1008549U; ES1008549Y

Abstract

Device for recovering energy, for a bicycle. It includes a spring 6 arranged to the rear of the bicycle 2, the frame 3 of which is articulated at a point 4 close to the axis 5 of the crank gear. The spring 6 stretches under the effect of the weight of the cyclist and as a function of the unevenesses in the surface of the road. When the spring 6 stretches, a lever 14 rotates in the direction for actuating the transmission via a chain 17 and ratchet wheel 18, making the latter rotate, which transmits the rotation to the rear wheel 20, the speed of which increases by virtue of the energy of the spring 6. Application to vehicles of the bicycle type.

Description

La présente invention concerne un dispositif de récupération d'énergie par mouvement applicable notamment aux bicyclettes. The present invention relates to a device for recovering energy by movement applicable in particular to bicycles.

Les dispositifs utilisés pour la transformation d'énergie sont nombreux et ils se différencient évidemment tous de par leur constitution et leur application. The devices used for energy transformation are numerous and they obviously all differ in their constitution and their application.

Cependant, il est tout aussi vrai que ces dispositifs sont, en règle générale, difficiles à construire et à monter et de ce fait tombent rapidement en désuétude. However, it is equally true that these devices are, as a rule, difficult to construct and assemble and therefore quickly fall into disuse.

Le dispositif de l'invention est extrêmement simple à construire et à utiliser, mais en outre on peut le monter, par exemple, sur une bicyclette et il permet de tirer parti des modifications d'énergie potentielle lorsque la roue de la bicyclette franchit des ornières ou autres irrégularités de terrain, le tout avec le poids, l'action des pédales et le mouvement du cycliste impliquant unaccroissement de l'énergie cinétique de la bicyclette. The device of the invention is extremely simple to build and use, but furthermore it can be mounted, for example, on a bicycle and it makes it possible to take advantage of the modifications of potential energy when the wheel of the bicycle crosses ruts or other ground irregularities, all with the weight, the action of the pedals and the movement of the cyclist involving an increase in the kinetic energy of the bicycle.

Selon l'invention, le dispositif que l'on monte à l'arrière de la bicyclette est constitué par un ressort monté sur des parties extrêmes élargies d'un axe. According to the invention, the device which is mounted at the rear of the bicycle is constituted by a spring mounted on end portions widened by an axis.

Ces parties extrêmes de l'axe sont respectivement fixées à deux supports ou paliers, l'un fixe et l'autre mobile ou déplaçable le long de deux guides ou glissières parallèles par l'intermédiaire d'une vis disposée entre les deux guides et d'un dispositif de commande. These end parts of the axis are respectively fixed to two supports or bearings, one fixed and the other mobile or movable along two parallel guides or slides by means of a screw disposed between the two guides and d 'a control device.

A l'extrémité supérieure desdits guides est fixée une fourchette qui est montée par son extrémité libre. At the upper end of said guides is fixed a fork which is mounted by its free end.

L'extrémite respective d'une tige rigide accouplée à son extrémité à l'axe d'un plateau ou roue dentee faisant partie dlune transmission par chaine, avec une roue à rochet disposée sur l'essieu de la roue arrière. The respective end of a rigid rod coupled at its end to the axis of a chainring or toothed wheel forming part of a chain transmission, with a ratchet wheel disposed on the axle of the rear wheel.

De même, le cadre de la bicyclette est articulé à la zone de l'axe des pédales. Likewise, the frame of the bicycle is articulated to the area of the axis of the pedals.

Pour permettre de comprendre plus facilement la constitution et l'utilisation du dispositif de l'invention, on décrit ci-après un exemple pratique de réalisation ou exécution, et ce à titre purement illustratif et non limitatif de l'invention, le tout tel qu'on peut le voir d'après les dessins annexés sur lesquels
- La figure 1 montre une vue de côté du dispositif monté à l'arrière d'une bicyclette.To make it easier to understand the constitution and the use of the device of the invention, a practical example of embodiment or execution is described below, and this is purely illustrative and not limiting of the invention, the whole as '' can be seen from the accompanying drawings on which
- Figure 1 shows a side view of the device mounted on the rear of a bicycle.

- La figure 2 est une vue de détail du dispositif relâché ou détendu. - Figure 2 is a detail view of the relaxed or relaxed device.

- La figure 3 est une vue montrant le dispositif bandé ou comprimé. - Figure 3 is a view showing the bandaged or compressed device.

Le dispositif 1 montré sur les figures est monté à l'arrière d'une bicyclette 2 dont le cadre 3 est relié à une articulation 4 proche de l'axe 5 du pédalier. The device 1 shown in the figures is mounted on the rear of a bicycle 2, the frame 3 of which is connected to a hinge 4 close to the axis 5 of the crankset.

Le dispositif est constitué par un ressort 6 monté entre deux supports 7 et 8 dont l'un est fixe tandis que l'autre peut se déplacer sur deux guides parallèles 9 en actionnant une vis 10 à son extrémité 11. The device consists of a spring 6 mounted between two supports 7 and 8, one of which is fixed while the other can move on two parallel guides 9 by actuating a screw 10 at its end 11.

Les guides et la vis sont fixes et, en outre, à l'extrémité des guides émerge une fourchette 12 qui présente à son extrémité accouplée la zone correspondante d'une tige rigide 13 reliée à un levier giratoire 14 monté sur l'axe 15 d'une roue dentée 16 faisant partie d'une transmission à chaîne 17 et d'une roue à rochet ou roue libre 18 montée sur l'essieu 19 de la roue arrière 20, de sorte que lorsqu'est actionné le dispositif, le levier 14 tourne en faisant tourner la roue à rochet 18 de telle sorte que celle-ci transmette à l'essieu de la roue arrière 20 l'énergie cinétique qui entraîne une augmentation de vitesse sur ladite roue. The guides and the screw are fixed and, moreover, at the end of the guides emerges a fork 12 which has at its coupled end the corresponding zone of a rigid rod 13 connected to a gyratory lever 14 mounted on the axis 15 d a toothed wheel 16 forming part of a chain transmission 17 and of a ratchet wheel or free wheel 18 mounted on the axle 19 of the rear wheel 20, so that when the device is actuated, the lever 14 rotates by rotating the ratchet wheel 18 so that it transmits to the axle of the rear wheel 20 the kinetic energy which causes an increase in speed on said wheel.

L'actionnement de la vis 10 permet d'obtenir un positionnement optimal du ressort pour le bander facilement. The actuation of the screw 10 makes it possible to obtain an optimal positioning of the spring for easily wrapping it.

Une fois suffisamment décrite la nature de l'invention ainsi que son mode pratique d'exécution, signalons que les dispositions ou agencements précédemment indiqués sont susceptibles de modifications de détail pour autant que ne sen trouve pas altéré le principe fondamental. Once sufficiently described the nature of the invention as well as its practical mode of execution, let us note that the provisions or arrangements previously indicated are susceptible of modifications of detail in so far as is not altered the fundamental principle.

Claims

1. - Device for recovering energy by movement, of the type of those comprising a spring (6) disposed at the rear of a bicycle (2) whose frame (3) is articulated in the vicinity (4) of the axis (5) of the crankset, said spring (6) being tightened not only under the effect of the weight, the pedaling and the movement imparted by the cyclist but also under the effect of the irregularities which the surface of the ground presents such as ruts and others characterized in that the spring (6) is disposed between two end supports (7,8), one fixed and the other movable under the action of a screw (10) along two parallel guides ( 9) extending into a fork (12) at its upper end coupled to a rigid rod (13) whose free end is connected to a lever (14) itself connected to the axis (15) of a toothed wheel ( 16) forming part of a chain transmission (17) and of a ratchet wheel (18) mounted on the rear axle of the bicycle, so that when said spring (6) is banded between said end supports (7,8), said lever (14) rotates in the direction of actuation of said chain transmission (17), by rotating the ratchet wheel (18) so that it transmits the rotation to the rear wheel (20) whose speed increases thanks to the energy of said spring (6).

2. - Device according to claim 1, characterized in that during its actuation said screw (10) moves that of said extreme supports (7,8) associated therewith to move the movable end of said spring (6) in order to obtaining the maximum compression or bandage of said spring (6) with the same force.