WO2017089627A1 - Tandem assembly for bicycles - Google Patents

Tandem assembly for bicycles Download PDF

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Publication number
WO2017089627A1
WO2017089627A1 PCT/ES2015/070861 ES2015070861W WO2017089627A1 WO 2017089627 A1 WO2017089627 A1 WO 2017089627A1 ES 2015070861 W ES2015070861 W ES 2015070861W WO 2017089627 A1 WO2017089627 A1 WO 2017089627A1
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WO
WIPO (PCT)
Prior art keywords
bicycle
structural part
rotation
axis
wheel
Prior art date
Application number
PCT/ES2015/070861
Other languages
Spanish (es)
French (fr)
Inventor
Julian DAVILA HUERTAS
Original Assignee
Dhg Investigación Y Desarrollo 007, S. L.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dhg Investigación Y Desarrollo 007, S. L. filed Critical Dhg Investigación Y Desarrollo 007, S. L.
Priority to PCT/ES2015/070861 priority Critical patent/WO2017089627A1/en
Publication of WO2017089627A1 publication Critical patent/WO2017089627A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K13/00Cycles convertible to, or transformable into, other types of cycles or land vehicle
    • B62K13/02Cycles convertible to, or transformable into, other types of cycles or land vehicle to a tandem
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00Bicycles
    • B62K3/12Tandems
    • B62K3/14Frames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M13/00Transmissions characterised by use of friction rollers engaging the periphery of the ground wheel
    • B62M13/04Transmissions characterised by use of friction rollers engaging the periphery of the ground wheel with means for moving roller into driving contact with ground wheel

Definitions

  • the present invention falls within the technical field of bicycle supplements that allows two people to travel on the same bicycle.
  • tandem bicycle equipment that allows the passenger, that is, the second person riding the bicycle, to also pedal.
  • tandem type bicycles that are specially designed for use by two people at the same time are known from the state of the art, pedaling both.
  • these bicycles have very large sizes, which in most cases mean they cannot be stored in users' homes or storage rooms.
  • a person wants to have a bicycle for individual use and only wants to be accompanied on specific occasions they would have to buy a standard and a tandem bicycle to meet their needs.
  • the present invention proposes a tandem equipment intended to be installed on a standard bicycle and which allows a passenger to be transported, that is, a second person, and who also pedals.
  • the great advantage of the tandem equipment described is that it allows the passenger to collaborate in the movement of the bicycle so that the driver does not have to make all the effort of the trip.
  • the tandem equipment comprises an additional saddle so that the passenger feels and is mounted on a frame formed by a piece of vertical structure, which joins the bicycle chassis and an additional vertical structure piece that is on which The pedals for the passenger are mounted.
  • the joining of the vertical structure piece to the bicycle chassis is done in the portions of the chassis intended for the placement of fenders or saddlebags.
  • the tandem team also includes a piece of horizontal structure configured to join the bicycle chassis in the frame of the bicycle or in the seatpost that starts from the frame and that supports the saddle of the bicycle.
  • the pedals for the passenger are mounted on axles that do not match that of the rear wheel. This, on the one hand, prevents interference between the movement that the passenger prints and the movement that the driver prints, and on the other hand, allows the passenger's pedals to be moved away from those of the driver. The distance between pedals prevents crashes during the pedaling of the driver and the passenger.
  • the movement of the passenger's pedals is transmitted to the rear wheel of the bicycle through a transmission chain (attached to a sprocket that moves the pedals) and through an attack wheel.
  • Said attack wheel is linked to a second axis of rotation that is driven by the movement of the pedals (transmitted by the chain) and is in contact with the rear wheel.
  • the movement between the two is transmitted by friction when the attack wheel turns on the rear wheel.
  • Figure 1. Shows a perspective view of the tandem equipment arranged on the rear wheel of a bicycle.
  • Figure 2 Shows an elevation view of the tandem equipment shown in Figure 1.
  • Figure 3. Shows a zoom view of the tandem equipment gear.
  • Figure 4. Shows a perspective view from a different angle of the tandem equipment shown in Figure 1.
  • Figure 5. Shows a perspective view of a tandem equipment installed on a bicycle and a bicycle driver and a passenger have been represented.
  • Figure 6. It shows a zoom view of the rear part of the bicycle with the tandem equipment and the two people represented in figure 5 using said bicycle and tandem equipment.
  • the tandem bicycle equipment comprises at least one bicycle supplement that allows them to use the same bike two people at the same time.
  • the bicycle supplement is of the type that includes a vertical structural part (1) with an inverted "U" configuration, a horizontal structural part (2) and an additional saddle (3).
  • the vertical structural part (1) has an upper section, and a lower section with first coupling means for attachment to the bicycle chassis that supports the rear wheel.
  • the horizontal structural part (2) is configured to join the vertical structural part (1) in the upper section and to join the bicycle chassis. That is, both the vertical structural part (1) and the horizontal part (2) are configured to connect the tandem equipment to the bicycle chassis. The fact that there is more than one junction point between the two allows the stresses that are supported at the junction points to be distributed.
  • the additional saddle (3) is attached to the vertical structural part (1) in the upper section. In the additional saddle (3) is where the second person who gets on the bicycle sits.
  • the tandem equipment comprises an additional vertical structural part (4) with an inverted "U" configuration, with an upper section attached to the upper section of the vertical structural part (1) and with a lower section.
  • the vertical structural part (1) and the additional vertical structural part (4) form a frame inside which the stress and movement transmission elements are arranged. This frame guarantees the rigidity and safety of the use of the assembly.
  • the components of the Frame are tubular profiles of alloy steels that allow a balance between lightness and strength.
  • the tandem equipment comprises pedals (5) attached to a first axis of rotation (6) disposed at each end of the lower section of the additional vertical structural part
  • It also comprises an attack wheel (7) arranged in contact with the rear wheel of the bicycle and a transmission mechanism that links the rotating movement of the pedals (5) to the attack wheel (7) to cause the movement of the latter on The rear wheel of the bicycle.
  • the axis of rotation of the pedals which is the first axis of rotation (6) does not coincide with the axis of rotation of the rear wheel of the bicycle. This allows the pedals
  • the transmission mechanism comprises at least one pinion (8) on each first axis of rotation (6), a second axis of rotation (12) linked to the attack wheel (7). ) and a transmission chain (13) in correspondence with each pinion (8) that transmits the movement of each pinion (8) to the second axis of rotation (12).
  • the drive chain (13) can also be a toothed belt.
  • the tandem equipment as designed guarantees the synchronism of the pedals (5) of the passenger. Also, preferably, the condition that the speed of rotation of the attack wheel (7) (which as previously seen transmits movement to the rear wheel of the bicycle by friction) must coincide with the tangential speed of The main wheel of the bicycle to improve transmission efficiency.
  • the tandem equipment additionally comprises a reduction mechanism with a first gear (9) that is linked to the second axis of rotation (12), and with a second gear (10) that meshes with the first gear (9). At the same time said second gear (10) rotates on a third axis of rotation (14) on which the attack wheel (7) is also mounted.
  • This mechanism can be seen in detail in Figure 2. This mechanism allows the operation of the tandem equipment to be optimal when the bicycle is traveling at speeds between 9km / h and 25km / h.
  • the tandem equipment additionally a spring (1 1) or equivalent element to ensure sufficient contact and pressure between the attack wheel (7) and the rear wheel of the bicycle to prevent a slip from to the other.
  • This spring (1 1) allows the equipment to adapt to different tires and inflation pressures.
  • the spring (1 1) extends between the vertical structural part (1) or the additional vertical structural part (4) to the axis of rotation of the attack wheel (7) or a joined piece to said axis of rotation of the attack wheel (7).
  • the piece attached to the axis of rotation of the attack wheel (7) is a connecting piece (15) that is also attached to the spring (1 1) with the possibility of swinging movement. This tilting movement of the connecting piece (15) combined with the effect of the spring (1 1) makes it possible to ensure contact between the attack wheel (7) and the rear wheel of the bicycle even when the rear wheel has imperfections and even for Different sizes of rear wheels depending on the bicycle model.
  • Figure 5 shows a bicycle driver and a passenger mounted on a bicycle that has the described tandem equipment installed.
  • Figure 6 shows a zoom of the embodiment shown in Figure 5 where the arrangement of the transmission mechanism of the tandem equipment and the pedals of the bicycle and the tandem equipment can be seen.
  • the tandem equipment comprises an anti-recoil system in the attack wheel (7), pulling on the wheel when it is turned in the forward direction and being free when it is turned in the opposite direction.
  • the movement is transmitted in a single direction of rotation, leaving the attack wheel (7) released in case of turning in the opposite direction. That is, the movement of the rear wheel of the bicycle is not going to force the rotation of the pedals (5) at any time, nor can they rotate the rear wheel of the bicycle in the opposite direction of the ride.
  • the anti-recoil system has been arranged on the attack wheel (7) to ensure that the maximum number of tandem equipment elements remain still if it is not pedaling. In this way, the drive chain (13), the sprockets (8) and the second axis of rotation (12) remain still if you do not pedal, even though the bicycle is moving forward.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

The invention relates to a tandem assembly for bicycles, comprising an attachment for bicycles and an additional vertical structural part (4) having an inverted U-shaped configuration, having an upper section joined to the upper section of the vertical structural part (1) of the attachment for bicycles, and having a lower section. The tandem assembly also comprises pedals (5) joined to a first rotation shaft (6) disposed at each end of the lower section of the additional vertical structural part (4), and a working wheel (7) disposed in contact with the rear wheel of the bicycle. The rotational movement of the pedals (5) towards the working wheel (7), in order to bring about the movement thereof on the rear wheel of the bicycle, is carried out by means of a transmission mechanism.

Description

EQUIPO DE TÁNDEM PARA BICICLETAS  BIKE TANDEM EQUIPMENT
OBJETO DE LA INVENCIÓN La presente invención se enmarca dentro del campo técnico de los suplementos para bicicletas que permite a dos personas desplazarse en la misma bicicleta. OBJECT OF THE INVENTION The present invention falls within the technical field of bicycle supplements that allows two people to travel on the same bicycle.
Más concretamente se describe un equipo de tándem para bicicletas que permite que el acompañante, es decir, la segunda persona que se monta en la bicicleta, también pedalee. More specifically, a tandem bicycle equipment is described that allows the passenger, that is, the second person riding the bicycle, to also pedal.
ANTECEDENTES DE LA INVENCIÓN Del estado de la técnica se conocen algunas soluciones para llevar en una bicicleta estándar a más de una persona. En la mayoría de los casos se trata de pequeños soportes o asientos, generalmente para niños pequeños hasta un peso determinado. A partir de cierto peso estos soportes no aguantan a la persona que se sienta en ellos. BACKGROUND OF THE INVENTION Some prior art solutions are known for carrying more than one person on a standard bicycle. In most cases they are small stands or seats, usually for small children up to a certain weight. From a certain weight these supports do not support the person sitting on them.
Se conocen también algunas soluciones que permiten a una segunda persona adulta montarse en la bicicleta para que el conductor de la bicicleta le lleve. La mayor desventaja de este tipo de soluciones es que el conductor tiene que pedalear el doble que cuando va solo para poder desplazar la bicicleta. Esto puede provocar que por ejemplo, las personas que no tienen suficiente fuerza para desplazar su propio peso más el de otra persona, no quieran utilizar estas soluciones. Some solutions are also known that allow a second adult person to ride the bicycle for the bicycle driver to take him. The biggest disadvantage of this type of solution is that the driver has to pedal twice as much when he goes alone to be able to move the bicycle. This may cause, for example, people who do not have enough strength to move their own weight more than another person, do not want to use these solutions.
Otra situación que puede ocurrir es que las personas que van a utilizar la bicicleta vayan a hacer desplazamientos largos o a subir calles o carreteras inclinadas. En estos casos, a pesar de que el conductor tenga fuerza suficiente para desplazar por un tiempo a otra persona, en la mayoría de los casos no aguanta desplazamientos largos o con cambios de inclinación. Another situation that may occur is that people who are going to use the bicycle will make long journeys or climb steep streets or roads. In these cases, even though the driver has strength enough to move another person for a while, in most cases it does not withstand long trips or with changes in inclination.
Por otra parte, se conocen del estado de la técnica las bicicletas de tipo tándem que están especialmente diseñadas para que las utilicen dos personas al mismo tiempo, pedaleando ambas. Sin embargo estas bicicletas tienen tamaños muy grandes, que en la mayoría de los casos hacen que no puedan guardarse en las casas o trasteros de los usuarios. Asimismo en caso de que una persona quiera tener una bicicleta de uso individual y solo quiera ir acompañado en ocasiones puntuales tendría que comprarse una bicicleta estándar y una de tándem para poder cubrir sus necesidades. On the other hand, tandem type bicycles that are specially designed for use by two people at the same time are known from the state of the art, pedaling both. However, these bicycles have very large sizes, which in most cases mean they cannot be stored in users' homes or storage rooms. Also, in the event that a person wants to have a bicycle for individual use and only wants to be accompanied on specific occasions, they would have to buy a standard and a tandem bicycle to meet their needs.
DESCRIPCIÓN DE LA INVENCIÓN La presente invención propone un equipo de tándem destinado a ser instalado en una bicicleta estándar y que permite transportar a un acompañante, es decir, a una segunda persona, y que éste también pedalee. La gran ventaja que aporta el equipo de tándem que se describe es que permite que el acompañante colabore en el movimiento de la bicicleta para que el conductor no tenga que hacer todo el esfuerzo del desplazamiento. DESCRIPTION OF THE INVENTION The present invention proposes a tandem equipment intended to be installed on a standard bicycle and which allows a passenger to be transported, that is, a second person, and who also pedals. The great advantage of the tandem equipment described is that it allows the passenger to collaborate in the movement of the bicycle so that the driver does not have to make all the effort of the trip.
El equipo de tándem comprende un sillín adicional para que se siente el acompañante y que está montado sobre un bastidor conformado por una pieza de estructura vertical, que se une al chasis de la bicicleta y una pieza de estructura vertical adicional que es sobre que la que están montados los pedales para el acompañante. La unión de la pieza de estructura vertical al chasis de la bicicleta se realiza en las porciones del chasis destinadas a la colocación de guardabarros o alforjas. Asimismo el equipo de tándem comprende una pieza de estructura horizontal configurada para unirse al chasis de la bicicleta en el cuadro de ésta o en la tija que parte del cuadro y que soporta el sillín de la bicicleta. The tandem equipment comprises an additional saddle so that the passenger feels and is mounted on a frame formed by a piece of vertical structure, which joins the bicycle chassis and an additional vertical structure piece that is on which The pedals for the passenger are mounted. The joining of the vertical structure piece to the bicycle chassis is done in the portions of the chassis intended for the placement of fenders or saddlebags. The tandem team also includes a piece of horizontal structure configured to join the bicycle chassis in the frame of the bicycle or in the seatpost that starts from the frame and that supports the saddle of the bicycle.
Los pedales para el acompañante están montados sobre unos ejes que no coinciden con el de giro de la rueda trasera. Esto, por una parte, evita que haya interferencias entre el movimiento que imprime el acompañante y el movimiento que imprime el conductor, y por otra parte, permite alejar los pedales del acompañante de los del conductor. La distancia que hay entre pedales evita que haya choques durante el pedaleo del conductor y el acompañante. The pedals for the passenger are mounted on axles that do not match that of the rear wheel. This, on the one hand, prevents interference between the movement that the passenger prints and the movement that the driver prints, and on the other hand, allows the passenger's pedals to be moved away from those of the driver. The distance between pedals prevents crashes during the pedaling of the driver and the passenger.
El movimiento de los pedales del acompañante se transmite hasta la rueda trasera de la bicicleta a través de una cadena de transmisión (unida a un piñón que mueven los pedales) y mediante una rueda de ataque. Dicha rueda de ataque está vinculada a un segundo eje de giro que se acciona con el movimiento de los pedales (transmitido por la cadena) y está en contacto con la rueda trasera. El movimiento entre ambas se transmite por rozamiento cuando la rueda de ataque gira sobre la rueda trasera. Esta solución permite a los usuarios de bicicletas estándar poder llevar cómodamente a un acompañante en cualquier momento que deseen. Simplemente hay que montar el equipo de tándem en la propia bicicleta para que un acompañante pueda subirse a ella y colaborar en el movimiento mediante pedaleo. Cuando el usuario quiere usar su bicicleta individualmente puede dejar el equipo de tándem puesto o simplemente desmontarlo de la bicicleta si desea ir más cómodo. Para evitar movimientos indeseados de los elementos del equipo de tándem cuando la bicicleta se está usando de forma individual y el equipo de tándem sigue montado, éste comprende un sistema de anti-retroceso. The movement of the passenger's pedals is transmitted to the rear wheel of the bicycle through a transmission chain (attached to a sprocket that moves the pedals) and through an attack wheel. Said attack wheel is linked to a second axis of rotation that is driven by the movement of the pedals (transmitted by the chain) and is in contact with the rear wheel. The movement between the two is transmitted by friction when the attack wheel turns on the rear wheel. This solution allows users of standard bicycles to comfortably carry a companion at any time they wish. Simply assemble the tandem equipment on the bike itself so that a companion can get on it and assist in the movement by pedaling. When the user wants to use their bicycle individually, they can leave the tandem equipment on or simply remove it from the bicycle if they want to go more comfortable. To avoid unwanted movements of the elements of the tandem equipment when the bicycle is being used individually and the tandem equipment is still mounted, it comprises an anti-recoil system.
DESCRIPCIÓN DE LOS DIBUJOS Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, de acuerdo con un ejemplo preferente de realización práctica de la misma, 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: DESCRIPTION OF THE DRAWINGS To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented:
Figura 1.- Muestra una vista en perspectiva del equipo de tándem dispuesto en la rueda trasera de una bicicleta. Figura 2 - Muestra una vista en alzado del equipo de tándem representado en la figura 1 . Figure 1.- Shows a perspective view of the tandem equipment arranged on the rear wheel of a bicycle. Figure 2 - Shows an elevation view of the tandem equipment shown in Figure 1.
Figura 3.- Muestra una vista de zoom del engranaje del equipo de tándem. Figura 4.- Muestra una vista en perspectiva desde un ángulo diferente del equipo de tándem representado en la figura 1. Figure 3.- Shows a zoom view of the tandem equipment gear. Figure 4.- Shows a perspective view from a different angle of the tandem equipment shown in Figure 1.
Figura 5.- Muestra una vista en perspectiva de un equipo de tándem instalado en una bicicleta y se han representado un conductor de la bicicleta y un acompañante. Figure 5.- Shows a perspective view of a tandem equipment installed on a bicycle and a bicycle driver and a passenger have been represented.
Figura 6.- Muestra una vista de zoom de la parte trasera de la bicicleta con el equipo de tándem y las dos personas representadas en la figura 5 utilizando dichos bicicleta y equipo de tándem. Figure 6.- It shows a zoom view of the rear part of the bicycle with the tandem equipment and the two people represented in figure 5 using said bicycle and tandem equipment.
REALIZACIÓN PREFERENTE DE LA INVENCIÓN PREFERRED EMBODIMENT OF THE INVENTION
A continuación se describe, con ayuda de las figuras 1 a 6, un ejemplo de realización de la presente invención. An example of embodiment of the present invention is described below with the aid of Figures 1 to 6.
Como se observa en la figura 1 , el equipo de tándem para bicicletas comprende al menos un suplemento para bicicletas que permite que puedan utilizar una misma bicicleta dos personas al mismo tiempo. El suplemento para bicicletas es del tipo de los que comprenden una pieza estructural vertical (1 ) con una configuración en "U" invertida, un pieza estructural horizontal (2) y un sillín adicional (3). As seen in Figure 1, the tandem bicycle equipment comprises at least one bicycle supplement that allows them to use the same bike two people at the same time. The bicycle supplement is of the type that includes a vertical structural part (1) with an inverted "U" configuration, a horizontal structural part (2) and an additional saddle (3).
La pieza estructural vertical (1 ) tiene una sección superior, y una sección inferior con primeros medios de acoplamiento para unión al chasis de la bicicleta que soporta la rueda trasera. La pieza estructural horizontal (2)está configurada para unirse a la pieza estructural vertical (1 ) en la sección superior y para unirse al chasis de la bicicleta. Es decir, tanto la pieza estructural vertical (1 ) como la horizontal (2) están configuradas para realizar la unión del equipo de tándem al chasis de la bicicleta. El hecho de que haya más de un punto de unión entre ambos permite distribuir los esfuerzos que se soportan en los puntos de unión. The vertical structural part (1) has an upper section, and a lower section with first coupling means for attachment to the bicycle chassis that supports the rear wheel. The horizontal structural part (2) is configured to join the vertical structural part (1) in the upper section and to join the bicycle chassis. That is, both the vertical structural part (1) and the horizontal part (2) are configured to connect the tandem equipment to the bicycle chassis. The fact that there is more than one junction point between the two allows the stresses that are supported at the junction points to be distributed.
El sillín adicional (3) está unido a la pieza estructural vertical (1 ) en la sección superior. En el sillín adicional (3) es donde se sienta la segunda persona que sube a la bicicleta. The additional saddle (3) is attached to the vertical structural part (1) in the upper section. In the additional saddle (3) is where the second person who gets on the bicycle sits.
La clave del equipo de tándem de la presente invención es que permite que la segunda persona que se sienta en la bicicleta, es decir, el acompañante, pedalee también. El equipo de tándem comprende una pieza estructural vertical adicional (4) con una configuración en "U" invertida, con una sección superior unida a la sección superior de la pieza estructural vertical (1 ) y con una sección inferior. La pieza estructural vertical (1 ) y la pieza estructural vertical adicional (4) conforman un bastidor en el interior del que se disponen los elementos de transmisión de esfuerzos y movimientos. Este bastidor garantiza la rigidez y la segundad del uso del conjunto. Preferentemente los componentes del bastidor son perfiles tubulares de aceros aleados que permiten obtener un equilibrio entre ligereza y resistencia. The key to the tandem team of the present invention is that it allows the second person sitting on the bicycle, that is, the passenger, to pedal as well. The tandem equipment comprises an additional vertical structural part (4) with an inverted "U" configuration, with an upper section attached to the upper section of the vertical structural part (1) and with a lower section. The vertical structural part (1) and the additional vertical structural part (4) form a frame inside which the stress and movement transmission elements are arranged. This frame guarantees the rigidity and safety of the use of the assembly. Preferably the components of the Frame are tubular profiles of alloy steels that allow a balance between lightness and strength.
Para permitir que el acompañante también pedalee, el equipo de tándem comprende unos pedales (5) unidos a un primer eje de giro (6) dispuesto en cada extremo de la sección inferior de la pieza estructural vertical adicionalTo allow the passenger to also pedal, the tandem equipment comprises pedals (5) attached to a first axis of rotation (6) disposed at each end of the lower section of the additional vertical structural part
(4) . Asimismo comprende una rueda de ataque (7) dispuesta en contacto con la rueda trasera de la bicicleta y un mecanismo de transmisión que vincula el movimiento giratorio de los pedales (5) a la rueda de ataque (7) para provocar el movimiento de ésta sobre la rueda trasera de la bicicleta. (4) . It also comprises an attack wheel (7) arranged in contact with the rear wheel of the bicycle and a transmission mechanism that links the rotating movement of the pedals (5) to the attack wheel (7) to cause the movement of the latter on The rear wheel of the bicycle.
De esta forma, cuando el acompañante pedalea, el movimiento que realiza se transmite hasta la rueda de ataque (7). Ésta gira sobre la rueda trasera de la bicicleta, colaborando con el movimiento de ésta y por tanto del conjunto de la bicicleta. In this way, when the passenger pedals, the movement he makes is transmitted to the attack wheel (7). It rotates on the rear wheel of the bicycle, collaborating with the movement of the bicycle and therefore the bicycle assembly.
El eje de giro de los pedales, que es el primer eje de giro (6) no coincide con el eje de giro de la rueda trasera de la bicicleta. Esto permite que los pedalesThe axis of rotation of the pedals, which is the first axis of rotation (6) does not coincide with the axis of rotation of the rear wheel of the bicycle. This allows the pedals
(5) estén más alejados de los pedales de la bicicleta para evitar que durante el pedaleo haya coincidencia entre los pedales del acompañante y los del conductor de la bicicleta. Además se ha abierto el espacio entre los pedales, también para evitar interferencias con los pedales del conductor. De esta forma se consigue una doble separación ya que están más alejados y más separados. (5) are further away from the pedals of the bicycle to avoid that during the pedaling there is a coincidence between the pedals of the passenger and those of the bicycle driver. In addition, the space between the pedals has been opened, also to avoid interference with the driver's pedals. In this way a double separation is achieved since they are further away and more separated.
Preferentemente, tal y como se aprecia en la figura 3, el mecanismo de transmisión comprende al menos un piñón (8) en cada primer eje de giro (6), un segundo eje de giro (12) vinculado a la rueda de ataque (7) y una cadena de transmisión (13) en correspondencia con cada piñón (8) que transmite el movimiento de cada piñón (8) al segundo eje de giro (12). La cadena de transmisión (13) puede ser también una correa dentada. El equipo de tándem tal y como está diseñado garantiza el sincronismo de los pedales(5) del acompañante. Asimismo, preferentemente, se debe cumplir la condición de que la velocidad de giro de la rueda de ataque (7) (que como se ha visto previamente transmite movimiento a la rueda trasera de la bicicleta por rozamiento) tiene que coincidir con la velocidad tangencial de la rueda principal de la bicicleta para mejorar la eficiencia de la transmisión. Preferably, as seen in Figure 3, the transmission mechanism comprises at least one pinion (8) on each first axis of rotation (6), a second axis of rotation (12) linked to the attack wheel (7). ) and a transmission chain (13) in correspondence with each pinion (8) that transmits the movement of each pinion (8) to the second axis of rotation (12). The drive chain (13) can also be a toothed belt. The tandem equipment as designed guarantees the synchronism of the pedals (5) of the passenger. Also, preferably, the condition that the speed of rotation of the attack wheel (7) (which as previously seen transmits movement to the rear wheel of the bicycle by friction) must coincide with the tangential speed of The main wheel of the bicycle to improve transmission efficiency.
Para conseguir esto, en un ejemplo de realización preferente el equipo de tándem comprende adicionalmente un mecanismo de reducción con un primer engranaje (9) que está vinculado al segundo eje de giro (12), y con un segundo engranaje (10)que engrana con el primer engranaje (9). Al mismo tiempo dicho segundo engranaje (10) gira sobre un tercer eje de giro (14) sobre el que también está montada la rueda de ataque (7). Este mecanismo se puede observar en detalle en la figura 2. Este mecanismo permite que el funcionamiento del equipo de tándem sea óptimo cuando la bicicleta se está desplazando a velocidades comprendidas entre los 9km/h y los 25 km/h.  To achieve this, in a preferred embodiment, the tandem equipment additionally comprises a reduction mechanism with a first gear (9) that is linked to the second axis of rotation (12), and with a second gear (10) that meshes with the first gear (9). At the same time said second gear (10) rotates on a third axis of rotation (14) on which the attack wheel (7) is also mounted. This mechanism can be seen in detail in Figure 2. This mechanism allows the operation of the tandem equipment to be optimal when the bicycle is traveling at speeds between 9km / h and 25km / h.
En otro ejemplo de realización preferente, el equipo de tándem adicionalmente un resorte (1 1 ) o elemento equivalente para garantizar el contacto y la presión suficiente entre la rueda de ataque (7) y la rueda trasera de la bicicleta para evitar que una resbale respecto a la otra. Este resorte (1 1 )permite al equipo adaptarse a diferentes neumáticos y presiones de hinchado. Como se aprecia en la figura 4, el resorte (1 1 ) se extiende entre la pieza estructural vertical (1 ) o la pieza estructural vertical adicional (4) hasta el eje de giro de la rueda de ataque (7) o una pieza unida a dicho eje de giro de la rueda de ataque (7). En la figura 3 se ha representado una realización en la que la pieza unida al eje de giro de la rueda de ataque (7) es una pieza de unión (15) que por otra parte está unida al muelle (1 1 ) con posibilidad de movimiento basculante. Este movimiento basculante de la pieza de unión (15) combinado con el efecto del resorte (1 1 ) permite garantizar el contacto entre la rueda de ataque (7) y la rueda trasera de la bicicleta incluso cuando la rueda trasera presenta imperfecciones e incluso para diferentes tamaños de ruedas traseras en función del modelo de bicicleta. In another preferred embodiment, the tandem equipment additionally a spring (1 1) or equivalent element to ensure sufficient contact and pressure between the attack wheel (7) and the rear wheel of the bicycle to prevent a slip from to the other. This spring (1 1) allows the equipment to adapt to different tires and inflation pressures. As can be seen in Figure 4, the spring (1 1) extends between the vertical structural part (1) or the additional vertical structural part (4) to the axis of rotation of the attack wheel (7) or a joined piece to said axis of rotation of the attack wheel (7). In figure 3 an embodiment is shown in which the piece attached to the axis of rotation of the attack wheel (7) is a connecting piece (15) that is also attached to the spring (1 1) with the possibility of swinging movement. This tilting movement of the connecting piece (15) combined with the effect of the spring (1 1) makes it possible to ensure contact between the attack wheel (7) and the rear wheel of the bicycle even when the rear wheel has imperfections and even for Different sizes of rear wheels depending on the bicycle model.
En la figura 5 se han representado un conductor de bicicleta y un acompañante montados en una bicicleta que lleva instalado el equipo de tándem descrito. En la figura 6 se muestra un zoom de la realización mostrada en la figura 5 donde se puede apreciar la disposición del mecanismo de transmisión del equipo de tándem y de los pedales de la bicicleta y del equipo de tándem. Figure 5 shows a bicycle driver and a passenger mounted on a bicycle that has the described tandem equipment installed. Figure 6 shows a zoom of the embodiment shown in Figure 5 where the arrangement of the transmission mechanism of the tandem equipment and the pedals of the bicycle and the tandem equipment can be seen.
En otro ejemplo de realización preferente, el equipo de tándem comprende un sistema anti-retroceso en la rueda de ataque (7), traccionandosobre la rueda cuando se gira en la dirección de avance y quedando libre cuando se gira en la dirección opuesta. Así pues se transmite el movimiento en un único sentido de giro, quedando la rueda de ataque (7) liberada en caso de girar en sentido contrario. Es decir, el movimiento de la rueda trasera de la bicicleta no va a forzar en ningún momento el giro de los pedales (5), ni éstos podrán hacer girar la rueda trasera de la bicicleta en el sentido contrario al de la marcha. In another preferred embodiment, the tandem equipment comprises an anti-recoil system in the attack wheel (7), pulling on the wheel when it is turned in the forward direction and being free when it is turned in the opposite direction. Thus, the movement is transmitted in a single direction of rotation, leaving the attack wheel (7) released in case of turning in the opposite direction. That is, the movement of the rear wheel of the bicycle is not going to force the rotation of the pedals (5) at any time, nor can they rotate the rear wheel of the bicycle in the opposite direction of the ride.
El sistema anti-retroceso se ha dispuesto en la rueda de ataque (7) para conseguir que el máximo número de elementos del equipo de tándem permanezcan quietos si no se está pedaleando. De este modo, la cadena de transmisión (13), los piñones (8) y el segundo eje de giro (12) permanecen quietos si no se pedalea, a pesar de que la bicicleta esté avanzando. The anti-recoil system has been arranged on the attack wheel (7) to ensure that the maximum number of tandem equipment elements remain still if it is not pedaling. In this way, the drive chain (13), the sprockets (8) and the second axis of rotation (12) remain still if you do not pedal, even though the bicycle is moving forward.

Claims

R E I V I N D I C A C I O N E S
1 .- Equipo de tándem para bicicletas que comprende al menos un suplemento para bicicletas del tipo de los que comprenden: 1 .- Tandem bicycle equipment comprising at least one supplement for bicycles of the type that include:
-una pieza estructural vertical (1 ) con una configuración en "U" invertida con una sección superior y una sección inferior con primeros medios de acoplamiento para unión al chasis de la bicicleta que soporta la rueda trasera, -a vertical structural part (1) with an inverted "U" configuration with an upper section and a lower section with first coupling means for attachment to the bicycle chassis that supports the rear wheel,
-una pieza estructural horizontal (2) configurada para unirse a la pieza estructural vertical (1 ) en la sección superior y al chasis de la bicicleta, -a horizontal structural part (2) configured to join the vertical structural part (1) in the upper section and the bicycle chassis,
-un sillín adicional (3) unido a la pieza estructural vertical (1 ) en la sección superior, - an additional saddle (3) attached to the vertical structural part (1) in the upper section,
caracterizadopor que adicionalmente comprende: characterized by additionally comprising:
-una pieza estructural vertical adicional (4) con una configuración en "U" invertida, con una sección superior unida a la sección superior de la pieza estructural vertical (1 ) y con una sección inferior,  - an additional vertical structural part (4) with an inverted "U" configuration, with an upper section attached to the upper section of the vertical structural part (1) and with a lower section,
-unos pedales (5) unidos a un primer eje de giro (6) dispuesto en cada extremo de la sección inferior de la pieza estructural vertical adicional (4), -una rueda de ataque (7) dispuesta en contacto con la rueda trasera de la bicicleta,  -a few pedals (5) attached to a first axis of rotation (6) disposed at each end of the lower section of the additional vertical structural part (4), -a attack wheel (7) arranged in contact with the rear wheel of the bike,
-un mecanismo de transmisión que vincula el movimiento giratorio de los pedales (5) a la rueda de ataque (7) para provocar el movimiento de ésta sobre la rueda trasera de la bicicleta.  -a transmission mechanism that links the rotating movement of the pedals (5) to the attack wheel (7) to cause it to move on the rear wheel of the bicycle.
2.- Equipo de tándem para bicicletas según la reivindicación 1 caracterizado por que el mecanismo de transmisión comprende al menos un piñón (8) en cada primer eje de giro (6), un segundo eje de giro (12) vinculado a la rueda de ataque (7) y una cadena de transmisión (13) en correspondencia con cada piñón (8) que transmite el movimiento de cada piñón (8) al segundo eje de giro (12). 2. Tandem bicycle equipment according to claim 1 characterized in that the transmission mechanism comprises at least one pinion (8) in each first axis of rotation (6), a second axis of rotation (12) linked to the wheel of attack (7) and a transmission chain (13) in correspondence with each pinion (8) that transmits the movement of each pinion (8) to the second axis of rotation (12).
3. - Equipo de tándem para bicicletas según la reivindicación 2 caracterizado por que comprende adicionalmente un mecanismo de reducción con un primer engranaje (9) que está vinculado al segundo eje de giro (12), y con un segundo engranaje (10)que engrana con el primer engranaje (9) y que a su vez gira sobre un tercer eje de giro (14) sobre el que también está montada la rueda de ataque (7). 3. - Tandem equipment for bicycles according to claim 2 characterized in that it additionally comprises a reduction mechanism with a first gear (9) that is linked to the second axis of rotation (12), and with a second gear (10) that engages with the first gear (9) and which in turn rotates on a third axis of rotation (14) on which the attack wheel (7) is also mounted.
4. - Equipo de tándem para bicicletas según la reivindicación 1 caracterizado por que comprende adicionalmente un resorte (1 1 ) que se extiende entre la pieza estructural vertical (1 ) o la pieza estructural vertical adicional (4) y el eje de giro de la rueda de ataque (7) o una pieza unida a dicho eje de giro de la rueda de ataque (7). 4. - Tandem bicycle equipment according to claim 1 characterized in that it additionally comprises a spring (1 1) extending between the vertical structural part (1) or the additional vertical structural part (4) and the axis of rotation of the attack wheel (7) or a piece attached to said axis of rotation of the attack wheel (7).
5.- Equipo de tándem para bicicletas según la reivindicación 4 caracterizado por que comprende una pieza de unión (15) que está unida al muelle (1 1 ) con posibilidad de movimiento basculante y que está unida al eje de giro de la rueda de ataque (7). 5. Tandem bicycle equipment according to claim 4 characterized in that it comprises a connecting piece (15) that is attached to the spring (1 1) with the possibility of tilting movement and that is attached to the axis of rotation of the attack wheel (7).
PCT/ES2015/070861 2015-11-27 2015-11-27 Tandem assembly for bicycles WO2017089627A1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189625213A (en) * 1896-11-10 1897-11-06 Anton Schmidthauer Improvements in Bicycles.
BE431447A (en) * 1900-01-01
BE442039A (en) * 1900-01-01
FR562571A (en) * 1922-05-29 1923-11-14 Bicycle
GB626485A (en) * 1946-08-28 1949-07-15 William Duggan Improvements in or relating to bicycles
IT1190654B (en) * 1982-01-08 1988-02-24 Arnaldo Pandolfi TAMDEM, NORMAL, FOLDABLE, OR CROSS TRANSFORMABLE BY BIKE
JPH01247291A (en) * 1988-03-28 1989-10-03 Masao Nagatsuka Bicycle with friction wheel for power transmission
KR200446864Y1 (en) * 2009-05-20 2009-12-04 이일형 bicycle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE431447A (en) * 1900-01-01
BE442039A (en) * 1900-01-01
GB189625213A (en) * 1896-11-10 1897-11-06 Anton Schmidthauer Improvements in Bicycles.
FR562571A (en) * 1922-05-29 1923-11-14 Bicycle
GB626485A (en) * 1946-08-28 1949-07-15 William Duggan Improvements in or relating to bicycles
IT1190654B (en) * 1982-01-08 1988-02-24 Arnaldo Pandolfi TAMDEM, NORMAL, FOLDABLE, OR CROSS TRANSFORMABLE BY BIKE
JPH01247291A (en) * 1988-03-28 1989-10-03 Masao Nagatsuka Bicycle with friction wheel for power transmission
KR200446864Y1 (en) * 2009-05-20 2009-12-04 이일형 bicycle

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