ES1058760U

ES1058760U - Bicycle. (Machine-translation by Google Translate, not legally binding)

Info

Publication number: ES1058760U
Application number: ES200402443U
Authority: ES
Inventors: Luis Letosa Marcen
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-27
Filing date: 2004-10-27
Publication date: 2005-02-01
Anticipated expiration: 2014-10-27
Also published as: ES1058760Y

Abstract

Bicycle, of the type that incorporates a frame with forks for coupling the complementary wheels and with a bottom bracket with a single or multiple plate for transmission of movement, by means of the corresponding chain, to the multiple pinion of the rear wheel, characterized in that the connecting rods corresponding to the said bottom bracket lack pedals, and said axis is integral, in addition to the classic plate, a toothed crown that is related, through a second chain or a transmission by pinions, with another toothed wheel, located at upper level, mounted on a second bottom bracket that plays on a support attached to the frame, counting this second bottom bracket with respective cranks also lacking pedals, having provided that each pair of connecting rods corresponding to the side of the bicycle is joined articulately to respective arms, converging towards its free extremity and jointed together, one of which with a prolongation ending in the corresponding pedal, all in such a way that in the half-cycle of descent of said pedal it is distanced from the pedal and main axis of the bicycle by more than twice the length of the corresponding and classic connecting rod, while in the half-cycle of ascent it approaches that pedalier axis. (Machine-translation by Google Translate, not legally binding)

Description

Bicicleta.Bicycle.

Object of the invention

La presente invención se refiere a una bicicleta, es decir, a un velocípedo de dos ruedas, provisto de un cuadro en el que se establece un eje pedalier, con dos pedales de accionamiento.The present invention relates to a bicycle, that is, at a two-wheel velocity, equipped with a frame in which is established a bottom bracket, with two pedals drive

El objeto de la invención es conseguir una bicicleta que requiere de un menor esfuerzo físico por parte del usuario de la misma, para conseguir los mismos efectos de avance bajo cualquier circunstancia.The object of the invention is to achieve a bicycle that requires less physical effort by the user of it, to achieve the same advance effects under any circumstances.

Background of the invention

En una bicicleta convencional participa una estructura resistente, denominada cuadro, del que emergen posteriormente dos horquillas para fijación de la rueda trasera, y anteriormente una tercera horquilla, para la rueda delantera, direccionable a través de una tija y mediante el correspondiente manillar, estableciéndose en el vértice inferior del cuadro un eje pedalier provisto de una pareja de bielas contrapuestas y rematadas en correspondientes pedales, eje pedalier al que es solidario un plato, simple o múltiple, que a través de una cadena transmite el movimiento a un piñón, a su vez simple o múltiple, convenientemente fijado al eje de la rueda trasera. Un movimiento planetario suministrado simultáneamente a ambos pedales, trae consigo el giro del eje pedalier y el consecuente arrastre de la bicicleta a través de la cadena de transmisión.A conventional bicycle participates in a resistant structure, called a frame, from which they emerge subsequently two forks for fixing the rear wheel, and formerly a third fork, for the front wheel, addressable through a seat post and through the corresponding handlebar, establishing an axis in the lower vertex of the frame bottom bracket provided with a pair of opposed and finished rods in corresponding pedals, bottom bracket to which a single or multiple plate that transmits the movement to a pinion, in turn simple or multiple, conveniently fixed to the rear wheel axle. A planetary movement simultaneously supplied to both pedals, it brings with it the turn of the bottom bracket and the consequent drag of the bicycle through of the transmission chain.

Los platos y piñones múltiples, mediante un sistema de "cambio" apropiado, permiten adecuar la relación de transmisión a las necesidades específicas de cada caso, en función de las irregularidades del terreno, de la velocidad y dirección del viento, etc.The plates and multiple pine nuts, by means of a appropriate "change" system, allow the relationship of transmission to the specific needs of each case, depending on of the irregularities of the terrain, of the speed and direction of the wind, etc.

Description of the invention

La bicicleta que la invención propone, partiendo de la estructuración básica de una bicicleta convencional, como la anteriormente citada, ha sido concebida y estructurada en orden a conseguir un mayor rendimiento en el movimiento de avance de la misma, es decir, una mayor potencia eficaz para una misma potencia aplicada por el usuario de la misma.The bicycle that the invention proposes, starting of the basic structuring of a conventional bicycle, such as the previously cited, has been conceived and structured in order to achieve greater performance in the forward movement of the same, that is, greater effective power for the same power applied by the user of it.

Para ello, de forma más concreta y a partir de la estructuración básica de una bicicleta convencional, la invención se centra en disponer sobre el montante posterior del cuadro y por encima del eje pedalier, un soporte para un segundo eje pedalier, alienado verticalmente con el inferior y provisto de las correspondiente bielas y plato o corona dentada, de manera que este segundo plato está relacionado con el primero mediante una cadena o una transmisión por piñones, para conseguir el movimiento sincronizado de los mismos, cadena asistida por un tensor.To do this, more specifically and from the basic structuring of a conventional bicycle, the invention it focuses on arranging on the rear post of the frame and by above the bottom bracket, a support for a second bottom bracket, vertically alienated with the lower one and provided with corresponding connecting rods and toothed plate or crown, so that this second plate is related to the first by a chain or a transmission by pinions, to get the movement synchronized thereof, chain assisted by a tensioner.

Ambas parejas de bielas, que giran sincronizadamente, reciben por su extremidad libre, en sustitución de él a los clásicos pedales, a respectivos brazos unidos articuladamente a las mismas, con la particularidad de que cada pareja lateral de brazos está a su vez unida articuladamente entre sí configurando un triángulo deformable, y contando uno de ellos con una prolongación que es la que se remata en un pedal común para ambos brazos y consecuentemente para ambas bielas del lateral correspondiente de la bicicleta.Both pairs of cranks, which rotate synchronously, they receive for their free limb, instead from him to the classic pedals, to respective united arms articulated to them, with the particularity that each lateral pair of arms is in turn articulated between yes configuring a deformable triangle, and counting one of them with an extension that is the one that ends in a common pedal for both arms and consequently for both side cranks corresponding bicycle.

Se consigue de esta manera un acusado distanciamiento entre el pedal y el eje pedalier inferior de la bicicleta, el que transmite el movimiento a la rueda trasera, cuando la pareja de brazos está extendida hacia delante, es decir, un brazo palanca considerablemente mayor, precisamente en la posición en la que el usuario puede aplicar un mayor esfuerzo al verse ayudado por su propia carga o peso corporal, mientras que en el semiciclo de retorno del mismo, es decir, en la trayectoria ascendente de dicho pedal, éste se aproxima al eje pedalier reduciendo el brazo de palanca, pero haciéndolo precisamente en aquella zona en la que, por el movimiento ascendente de la pierna correspondiente al usuario, prácticamente no se aplica esfuerzo alguno a la transmisión.You get this way a defendant distance between the pedal and the bottom pedal axis of the bicycle, which transmits the movement to the rear wheel, when the pair of arms is extended forward, that is, a considerably larger lever arm, precisely in the position in which the user can apply more effort to the be helped by your own load or body weight while in the return half cycle of the same, that is, in the trajectory ascending of said pedal, it approaches the bottom bracket reducing the lever arm, but doing it precisely in that area in which, by the upward movement of the leg corresponding to the user, practically no effort is applied Some to the transmission.

Esta especial estructuración trae consigo que el imaginario eje de giro sobre el que los pedales describen su trayectoria cíclica se vea sustancialmente desplazado hacia delante, lo que obliga a alargar en la misma medida el cuadro de la bicicleta y a desplazar también hacia delante el sillín de la misma.This special structuring brings with it that the imaginary axis of rotation on which the pedals describe their cyclic path is substantially shifted towards in front, which forces the table to lengthen to the same extent bicycle and also move the saddle of the same.

Description of the drawings

Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

La figura 1.- Muestra una representación parcial en alzado lateral de una bicicleta realizada de acuerdo con el objeto de la presente invención, concretamente del sector de la misma que se ve afectado por dicha invención.Figure 1.- Shows a partial representation in side elevation of a bicycle made in accordance with the object of the present invention, specifically of the sector of the same that is affected by said invention.

La figura 2.- Muestra una representación similar a la figura anterior, en la que los pedales adoptan una disposición contrapuesta a la mostrada en la figura 1.Figure 2.- Shows a similar representation to the previous figure, in which the pedals adopt a provision as opposed to that shown in figure 1.

La figura 3.- Muestra otra vista en alzado lateral de la misma bicicleta, por su lateral opuesto al de las figuras anteriores y con sus pedales en la misma posición que en la figura 2.Figure 3.- Shows another elevation view side of the same bicycle, on its side opposite that of the previous figures and with their pedals in the same position as in the figure 2.

Preferred Embodiment of the Invention

A la vista de las figuras reseñadas puede observarse como la bicicleta que la invención propone, al igual que cualquier bicicleta convencional, está constituida mediante un cuadro (1), de configuración tendente al triángulo, de cuyo vértice postero-superior emerge una horquilla (2) para la rueda trasera (3), con la que colabora una segunda horquilla (4) emergente de su vértice inferior, vértice en el que se sitúa el eje pedalier (5), con sus correspondientes bielas (6-6'), y al que es solidario un plato simple o múltiple (7) para transmisión de movimiento, mediante la cadena (8) y el correspondiente mecanismo de cambio (9), al piñón múltiple (10) de la rueda trasera (3), contando el citado cuadro (1) en su extremidad anterior con una tija para la horquilla de dirección de la rueda delantera (11), tija y horquilla que no han sido representadas en los dibujos, de manera que tampoco lo ha sido el complementario manillar, por ser ajenos al objeto de la invención.In view of the figures outlined you can be observed as the bicycle that the invention proposes, as well as any conventional bicycle, is constituted by a frame (1), with a tendency to the triangle, whose vertex postero-superior emerges a fork (2) for the rear wheel (3), with which a second fork (4) collaborates emerging from its lower vertex, vertex where the axis is located bottom bracket (5), with corresponding cranks (6-6 '), and to which a simple dish or multiple (7) for motion transmission, by chain (8) and the corresponding gear mechanism (9), to the multiple pinion (10) of the rear wheel (3), counting said frame (1) in its forelimb with a seatpost for the steering fork the front wheel (11), seat post and fork that have not been represented in the drawings, so that neither has been the complementary handlebar, for being outside the object of the invention.

Pues bien, de acuerdo ya con la invención al montante posterior (12) del cuadro se fija un soporte (13) para un segundo eje pedalier (14), con sus correspondientes bielas (15-15'), siendo solidario a dicho eje pedalier (14) un plato o corona dentada (16) de la que es complementaria otra corona dentada (17) fijada al eje pedalier inferior (5), siendo dichas correas dentadas (16) y (17) idénticas entre sí y estando relacionadas mediante una cadena (18) que hace que el
movimiento de la misma resulte perfectamente sincronizado.Well, in accordance with the invention, a support (13) for a second bottom bracket (14), with its corresponding connecting rods (15-15 '), is attached to said rear bracket (12) of the frame, being attached to said bottom bracket (14) a plate or toothed crown (16) of which another toothed crown (17) fixed to the bottom bottom bracket (5) is complementary, said toothed belts (16) and (17) being identical to each other and being related by a string (18) that makes the
movement of it is perfectly synchronized.

Los ejes pedalieres (5) y (14) quedan situados en una misma vertical, y la cadena (18) se mantiene perfectamente acoplada a las coronas (16) y (17) mediante un mecanismo tensor (19) especialmente visible en la figura 1.The bottom axles (5) and (14) are located in the same vertical, and the chain (18) is perfectly maintained coupled to crowns (16) and (17) by a tensioning mechanism (19) especially visible in figure 1.

Las coronas dentadas (16) y (17) están relacionadas entre sí de manera que las bielas (6) y (15) resultan permanentemente paralelas, sea cual fuere la posición angular de las mismas.Toothed crowns (16) and (17) are related to each other so that the connecting rods (6) and (15) are permanently parallel, whatever the angular position of the same.

Las bielas inferiores (6-6'), en lugar de rematarse en los clásicos pedales, se unen articuladamente a respectivos brazos (20-20'), a través de uniones articuladas (21), a la vez que las bielas superiores (15-15') se unen también articuladamente a respectivos brazos (22-22') a través de una articulación (23), siendo dichos brazos (20-22), (20'-22'), convergentes por su extremidad libre y uniéndose entre sí mediante otra articulación (24), más allá de la cual uno de dichos brazos (22-22') cuenta con una prolongación (25) rematada en el clásico pedal (26).The lower connecting rods (6-6 '), in instead of finishing off in the classic pedals, they articulate together to respective arms (20-20 '), through unions articulated (21), while the upper connecting rods (15-15 ') are also jointly linked to respective arms (22-22 ') through a joint (23), said arms (20-22) being, (20'-22 '), convergent by its free limb and joining each other through another joint (24), beyond the which one of said arms (22-22 ') has a extension (25) finished off in the classic pedal (26).

De acuerdo con esta estructuración en la maniobra de descenso de cada pedal (26-26') en la que lógicamente el ciclista puede aplicar una mayor potencia, el distanciamiento entre cada pedal (26) y el eje pedalier (5) es bastante mayor que el doble del distanciamiento de una bicicleta convencional, con lo que se consigue un brazo de palanca a su vez considerablemente mayor y consecuentemente un mayor rendimiento, mientras que dichos pedales (26) y (26') se aproximan al eje pedalier (5) en el semiciclo de ascenso de los pedales, en los que la potencia aplicada por el ciclista es mínima, prácticamente nula. Así pues, se consigue un brazo de palanca variable, de amplitud máxima en la situación más favorable para que el ciclista ejerza el esfuerzo sobre los pedales, y mínima cuando no aplica esfuerzo a los mismos, lo que incrementa acusadamente el rendimiento de la bicicleta.According to this structuring in the maneuver of descent of each pedal (26-26 ') in which logically the cyclist can apply greater power, the distance between each pedal (26) and the bottom bracket (5) is quite greater than double the distance of a bicycle conventional, which achieves a lever arm in turn considerably higher and consequently higher performance, while said pedals (26) and (26 ') approach the axis bottom bracket (5) in the half-way up the pedals, in which The power applied by the cyclist is minimal, practically zero. Thus, a variable lever arm of amplitude is achieved maximum in the most favorable situation for the cyclist to exercise the effort on the pedals, and minimum when no effort is applied to the same, which sharply increases the performance of the bicycle.

Sólo resta señalar por último, como ya se ha apuntado con anterioridad y como se desprende de la observación de las figuras, en especial de las figuras (1) y (2), que los pedales (26-26') van a quedar en todo momento situados por delante de la vertical correspondiente al eje pedalier (5), lo que obliga a un alargamiento del chasis (1) de la bicicleta, y a un desplazamiento hacia delante del sillín (27) de la misma para que la posición corporal del ciclista sea la adecuada con respecto al imaginario eje alrededor del cual los pedales (26-26') describen el clásico movimiento planetario o circunferencial.It only remains to point out finally, as already stated noted above and as follows from the observation of the figures, especially figures (1) and (2), that the pedals (26-26 ') will remain at all times located by in front of the vertical corresponding to the bottom bracket (5), which forces an elongation of the chassis (1) of the bicycle, and a forward movement of the saddle (27) thereof so that the Cyclist's body position is appropriate with respect to the imaginary axis around which the pedals (26-26 ') describe the classic planetary movement or circumferential.

Claims

l. Bicycle, of the type that incorporates a frame with forks for coupling of the complementary wheels and with a bottom bracket provided with a single or multiple plate for movement transmission, by means of the corresponding chain, to the multiple sprocket of the rear wheel, characterized in that the connecting rods corresponding to the aforementioned bottom bracket have no pedals, and said shaft is integral, in addition to the classic plate, a toothed crown that is related, through a second chain or a transmission by sprockets, with another cogwheel, located at the upper level , mounted on a second bottom bracket that plays on a support in support of the frame, this second bottom bracket having respective connecting rods also without pedals, each pair of connecting rods corresponding to the side of the bicycle being provided to be articulated jointly to respective arms, converging towards its free limb and jointly linked to each other, one of which counts with a prolongation finished off in the corresponding pedal, all this in such a way that in the half-descent cycle of said pedal it is distanced from the bottom and main axle of the bicycle in a magnitude greater than double the length of the corresponding and classic connecting rod, while that in the ascent half cycle approaches said bottom bracket.

2. Bicycle, according to claim 1, characterized in that the two toothed crowns are related to each other so that the corresponding connecting rods are parallel, counting the chain that relates them to a tensioning mechanism.

3. Bicycle, according to previous claims, characterized in that the pedals are at all times located in front of the main pedal axis of the bicycle, with respect to which the imaginary axis of the planetary movement of said pedals is also substantially moved forward, for which purpose it is provided that the saddle of the bicycle conveniently moves forward, and that the frame of the bicycle is lengthened to absorb the maximum distance between each pedal and the corresponding pair of connecting rods.