FR2914902A1

FR2914902A1 - Pedal device for bicycle, has ratchet wheel system having ratchets, ratchet wheel and terminal pinion to maintain ratchets, and generator and electronic card assembly mounted on bicycle by axle mounted on pedal

Info

Publication number: FR2914902A1
Application number: FR0702752A
Authority: FR
Inventors: Kevin Arnoult; Thomas Payet; Arnaud Brichon; Gall Julien Le
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-16
Filing date: 2007-04-16
Publication date: 2008-10-17

Abstract

The device has a pedal constituting of a gear train with toothed wheels. A ratchet wheel system has two ratchets, ratchet wheel and terminal pinion to maintain the ratchets in position. Generator and an electronic card fix an LED, where the card and generator assembly are positioned in a casing for optimal visualization of a cyclist. Flanges are incorporated around the pedal for permitting diffusion of light emitted by the LED. The assembly is mounted on the bicycle by an axle mounted on the pedal which is in pivot connection with the axle by ball bearings.

Description

-1- Cette invention concerne la transformation d'énergie mécanique enThis invention relates to the transformation of mechanical energy into

énergie électrique par le biais de la force de pédalage. Il faut savoir que les cyclistes sont la cible de nombreux accidents de la route, car ils ne sont pas toujours très bien vue par les automobilistes dans l'obscurité, dans le brouillard etc... Les LED sont de plus en plus utilisé dans le domaine de l'automobile ou de la domotique, car elles remplacent les ampoules qui sont moins économiques et qui ont une durée de vie moins importante. C'est pourquoi nous avons dotée cette pédale de 7 LED haute luminescence capable d'être vue a plus de 100 mètres, et cela par tout temps. Pour un maximum de sécurité de l'utilisateur, de plus la consommation de celle-ci est minime. Nous les avons placées de façon à être vue dans tout angle de vue, celle-ci clignote sous forme de chenillard (ou autre) pour un avoir un impacte visuelle important. Le chenillard est alimenté par un dispositif électronique commandé par un microcontrôleur. electrical energy through the pedaling force. You should know that cyclists are the target of many road accidents, because they are not always very well seen by motorists in the dark, in the fog etc ... LEDs are increasingly used in the automotive or home automation because they replace bulbs that are less economical and have a shorter life span. That's why we have equipped this pedal of 7 LEDs high luminescence able to be seen at more than 100 meters, and that in any weather. For maximum safety of the user, more consumption of it is minimal. We have placed them so as to be seen in any angle of view, it flashes as a chase (or other) to have a significant visual impact. The chaser is powered by an electronic device controlled by a microcontroller.

La pédale est constituée d'un train d'engrenage constitué de cinq roues dentées (2, 3, 4, 5, 21) avec lequel nous obtenons un rapport de multiplication de 90. D'un système de roue à cliquet, constitué de deux cliquets (20), d'une roue à cliquet (19) et du pignon de sortie (5) qui fait aussi office de maintient en position des cliquets. D'une génératrice (18), de cartes électroniques (13) ou viennent ce fixer les LED (15). Cette ensemble vient se mettre en position dans deux carter (8, 17), pour une visualisation optimale nous avons incorporés des flasques (14) tout au tour de la pédale pour pouvoir avoir une bonne diffusion de la lumière émise par les LED. Pour une étanchéité maximum nous avons conçus des joints en croix (6, 7). Tout le mécanisme est enfermé entre les deux carters qui sont maintenue entre eux par 8 vis de fixations (16). L'ensemble est montée sur le vélo par le biais de l'axe (10) qui se monte sur un pédalier standard, la pédale est en liaison pivot sur l'axe par l'intermédiaire de deux roulement à - bille (11, 12). The pedal consists of a gear train consisting of five toothed wheels (2, 3, 4, 5, 21) with which we obtain a multiplication ratio of 90. A ratchet wheel system consisting of two pawls (20), a ratchet wheel (19) and the output gear (5) which also serves to maintain the ratchets in position. From a generator (18), electronic boards (13) or just fix the LEDs (15). This set comes into position in two casings (8, 17), for optimal viewing we have incorporated flanges (14) around the pedal to be able to have a good diffusion of the light emitted by the LEDs. For maximum sealing we have designed cross joints (6, 7). The entire mechanism is enclosed between the two housings which are held together by 8 fastening screws (16). The assembly is mounted on the bicycle by means of the shaft (10) which is mounted on a standard pedal, the pedal is in pivot connection on the axis by means of two ball bearings (11, 12 ).

Principe de fonctionnement : L'énergie mécanique fournie par le cycliste va entrainer le train multiplicateur (train d'engrenage), composé de 5 roues dentées. Il va à son tour transmettre à la génératrice l'énergie mécanique de l'utilisateur. Nous s avons incorporé une roue à cliquet : Si le cycliste décidait de s'arrêter soudainement, la génératrice passerait de 3600 tr/min à 0 tr/min ce qui provoquerait une décélération brutale du réducteur. Un risque important d'usure (casse) prématurée apparaitrai au niveau de la denture du train d'engrenage et autres axes. Le système à cliquet évite ce défaut, permet lo un arrêt progressif des trains d'engrenage, de plus la génératrice par son inertie poursuivra sa production d'énergie sans aucun effort du cycliste. Nous récupérons l'énergie mécanique fournie par le cycliste pour la transformer en énergie électrique à la sortie, par le biais d'une carte électronique qui va partager l'énergie entre 7 LED haute luminescence. Le 15 fonctionnement des LED sera contrôlé par un microcontrôleur. Et elles fonctionneront en chenillard (ou autre), une diode restera fixe pour rappeler un catadioptre. Toujours dans un souci d'augmenter le temps d'allumage des LED, après l'arrêt du pédalage, un condensateur à été intégré sur la carte électronique. La pédale flash fonctionnera encore 15 secondes. -2- Principle of operation: The mechanical energy provided by the cyclist will drive the gear train (gear train), consisting of 5 toothed wheels. It will in turn transmit to the generator the mechanical energy of the user. We incorporated a ratchet wheel: If the rider decided to stop suddenly, the generator would go from 3600 rpm to 0 rpm which would cause a sudden deceleration of the gearbox. A significant risk of premature wear (breakage) will occur in the toothed gear and other axes. The ratchet system avoids this defect, allows a progressive stop of the gear trains, moreover the generator by its inertia will continue its production of energy without any effort of the cyclist. We recover the mechanical energy provided by the cyclist to transform it into electrical energy at the exit, through an electronic card that will share energy between 7 high luminescence LEDs. The operation of the LEDs will be controlled by a microcontroller. And they will run in a chase (or other), a diode will remain fixed to recall a reflex reflector. Always in order to increase the lighting time of the LEDs, after stopping the pedaling, a capacitor has been integrated on the electronic card. The flash pedal will operate for another 15 seconds. -2-

Claims

This invention relates to a lighting pedal device, which by the effort of the cyclist on the pedal, will transmit a torque to the gear (2, 3, 4, 5, 21). Our gear train is then rotated and drives at the same time the axis of the generator (18). The purpose of incorporating the ratchet system (20, 19, 5) is to increase the life of the gear train initially, but above all to be able to minimize the forces in the event of a sudden stop of the cyclist. At the output of the generator we get an electric current of about 5Volts. Running and pointing to the main electronic board. Who will reduce it to 3Volts. The microcontroller has been programmed in such a way that we get a chase, for a better visualization of the cyclist. The visualization is done using 7 LEDs high luminescence (15). This set comes into position in two housings (8, 17), for optimal viewing 15 we incorporated flanges (14) around the pedal to be able to have a good diffusion of the light emitted by the LEDs. For maximum sealing we have designed cross joints (6, 7). The entire mechanism is enclosed between the two housings which are held together by 8 fastening screws (16). The assembly is mounted on the bicycle by means of the axle (10) which is mounted on a standard pedal, the pedal is pivotally connected to the axle by means of two ball bearings (11, 12). ).

2) Device according to claim 1 characterized in that the ratchet system (20, 19, 5), increases the life of the gear train. But especially: When the cyclist pedal ratchets (20), by centrifugal force are plated on the inner walls of the wheel (19) and meshes. This wheel is fixed on the axis of the generator and then takes it in rotation. When the rider does not pedal the ratchets fold down, and so there is no more movement transmission between the generator and the gear train. Example: if the cyclist decided to stop suddenly, the generator would go from 3600 rpm to 0 rpm which would cause a sudden deceleration of the gearbox. A significant risk of premature wear (breakage) will occur in the gear teeth and other axes. The ratchet system avoids this defect, allows a progressive stop of the gear trains, moreover the generator by its inertia will continue its production of energy without any effort of the cyclist

3) Device according to claim 1 characterized in that the gear train (2, 3, 4, 5, 21) is intended to increase the speed, to bring the generator (18) to its optimum operation.

4) Device according to claim 1 characterized in that there are 7 LEDs (15), placed so that they can see them in all angles of view. 15

5) Device according to claim 1 and 4 characterized in that the LED programming this is done by a microcontroller which is programmed in such a way to obtain a chase (or other).

6) Device according to claim 1 characterized in that the main electronic card, incorporates a capacitor which feeds the card 20 once the cyclist no longer produces energy. We have a range of between 15 and 30 seconds LED power supply. This capacitor recharges when the cyclist is pedaling.

7) Device according to claim 1 characterized in that the housings (8, 17) comprise protection pads in case of shock for optimum protection of the flanges (14). They also have pimples, a slightly larger volume on the ends, and streaks. All this for a better adhesion of the foot on the pedal. This pedal can work in any weather and on any type of terrain.

8) Device according to claim 7 characterized in that the pedal is completely sealed because it incorporates cross joints (6, 7), and a sealed ball bearing (11).

9) Device according to any one of the preceding claims characterized in that the casings are marked with a FLASH PEDAL logo.