WO2000075005A1 - Bottom bracket shell with built-in micro-derailleur for bicycles - Google Patents

Bottom bracket shell with built-in micro-derailleur for bicycles Download PDF

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Publication number
WO2000075005A1
WO2000075005A1 PCT/ES2000/000196 ES0000196W WO0075005A1 WO 2000075005 A1 WO2000075005 A1 WO 2000075005A1 ES 0000196 W ES0000196 W ES 0000196W WO 0075005 A1 WO0075005 A1 WO 0075005A1
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WO
WIPO (PCT)
Prior art keywords
bicycles
rear axle
sprockets
pedalier
box
Prior art date
Application number
PCT/ES2000/000196
Other languages
Spanish (es)
French (fr)
Inventor
José LLIBRER PORCAR
Amparo Laguarda Martinez
Original Assignee
Llibrer Porcar Jose
Amparo Laguarda Martinez
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 Llibrer Porcar Jose, Amparo Laguarda Martinez filed Critical Llibrer Porcar Jose
Publication of WO2000075005A1 publication Critical patent/WO2000075005A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/083—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with radially acting and axially controlled clutching members, e.g. sliding keys
    • 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
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/06—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/24—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using chains or toothed belts, belts in the form of links; Chains or belts specially adapted to such gearing

Definitions

  • the present invention refers to a bottom bracket with built-in microcane for bicycles that basically incorporates in its interior an anterior axis where the pedals are connected and a rear axle provided with a group of sprockets that are linked, directly or through intermediate chains, with other facing sprockets coupled to the pedal axle.
  • an outer plate On the axis of the pedals, an outer plate is coupled, in which a conventional chain is connected, which will transmit the traction to the rear wheel through a single sprocket of said wheel.
  • the rear axle includes at least one other end pinion linked to another pair of the anterior axis that is integral with the outer plate.
  • the changes of gears for bicycles are normally composed of two similar devices, one before for the plates and another one for the sprockets of the driving wheel, integral with the same with the rear axle.
  • 9502063 consists of a bottom bracket that includes a front axle provided with a group of pinions that transmit its movement to a rear axle, with interposition of an intermediate pinion, connecting the pedals at the ends of the anterior axis.
  • the box incorporates a mechanism for transmitting the rotary movement of the rear axle to a conventional plate coupled externally and freely to the axis of the pedals.
  • This new bottom bracket although it solves the problems mentioned above, has the disadvantage that its performance is not all the good that would be expected, mainly because part of the user's power and energy is lost in the friction between the different pinions and gears of the bottom bracket. DESCRIPTION OF THE INVENTION
  • the invention proposes a new bottom bracket with built-in microchange for bicycles that comprises, in principle, a housing fixed on the bottom of the frame of a bicycle in correspondence with the axis of the pedals that fits into the housing.
  • a housing fixed on the bottom of the frame of a bicycle in correspondence with the axis of the pedals that fits into the housing.
  • On the previous axis there is a conventional plate where a chain is connected that will transmit its movement to a single pinion attached to the rear wheel of the bicycle.
  • the axis of the pedals includes a group of sprockets that rotate in solidarity with the aforementioned axle, at the same time that they are linked, either directly or through short intermediate chains, with two sprockets coupled in principle freely in a rear structure tree tubular.
  • the rear axle includes at least one other end pinion that rotates in solidarity with said tree, at the same time as it is associated with a crazy pinion coupled on the anterior axis and which is in solidarity with the conventional plate.
  • a crazy pinion coupled on the anterior axis and which is in solidarity with the conventional plate.
  • the rear tree with a tubular structure includes inside it an advantageous anchoring mechanism to support the tree with one of the gears belonging to the group of pinions coupled to said tree.
  • This has a longitudinal groove through which a latch or retractable lug belonging to the anchoring mechanism is guided, said latch engaging with the corresponding gear.
  • the anchoring mechanism is governed by a cable that is connected to a single conventional or similar joystick.
  • Figure 1. Represents a sectioned plan view of the bottom bracket housing with microchange incorporated for bicycles, object of the invention.
  • Figure 2.- represents a side view of the bottom bracket.
  • Figure 3. Represents a sectional elevation view of a locking or anchoring mechanism of pinions that are part of the invention.
  • Figure 4. Represents a sectioned view of the locking mechanism referred to in the previous figure.
  • Figure 5. Represents a view of the box bottom bracket where a second embodiment is shown.
  • the bottom bracket with built-in microchange for bicycles is constituted from a housing 1 fixed at the bottom of the frame of a bicycle in correspondence with an axle previous 2, at whose outer ends are connected pedals not shown in the figures.
  • a conventional plate 3 is coupled where an elongated chain linked to a single sprocket of the rear wheel of the bicycle will be connected to transmit the rotating movement to said rear wheel or driving wheel of the bicycle.
  • the front axle 2 of the pedals includes a group of front sprockets 4 that rotate in solidarity at all times with the axis 2, at the same time that they are linked, through short intermediate chains 5, with another group of rear sprockets 6 freely coupled in a rear axle 7 of tubular structure, which is coupled to the housing 1 with interposition of some bearings 8.
  • the anterior axis 2 is also coupled to the housing 1 with interposition of other bearings 9.
  • the rear axle 7 includes at least one cogwheel 10 that rotates in solidarity with said shaft 7, at the same time as it is connected, by another short chain 11, with a crazy pinion 12 coupled on the front axle 2.
  • This crazy pinion 12 is in solidarity with the conventional plate 3 by means of a bushing or tubular body 13.
  • Inside the tubular shaft 7 there is an anchoring mechanism 14 designed to independently support each of the sprockets of the rear sprocket group 6 with the shaft 7 itself in order to achieve the different output speeds of the conventional dish 3.
  • the anchoring mechanism 14 comprises a slide 15 provided with a cylindrical cavity 16 where a small piston 17 is fitted with interposition of a spring
  • Each of the gears of the rear pinion group 6 is affected by at least one internal recess or recess 21 established in correspondence with the diameter inside the said pinions 6, such that axially placing the slide 15 in a place along the shaft 7, the nail 19 will be introduced into one of the internal recesses 21 of a gear of the rear pinion group 6, whereby, the shaft 7 will be dragged by the corresponding pinion 6 in its rotational movement that will be transmitted to the conventional plate 3 through the gearwheel 10 of the rear axle 7 and the idler 12 in solidarity with the p can 3.
  • said outer part comprises two inclined planes 22 gently curved and facing each other.
  • the recesses 21 of the pinions 6 of the rear axle 7 are also affected by a curved-concave section 23 which facilitates the axial displacement of the coupling mechanism 14 and therefore, the change of speeds of the bottom bracket of the invention.
  • the anchoring mechanism 14 is governed by a cable 24 that is connected at one end to the slide 15, while at the end opposite is connected with a conventional joystick not shown in the figures.

Abstract

The invention relates to a bottom bracket shell affixed to the lower part of the bicycle frame and essentially comprising a pedal front axle (2) and a rear shaft (7) fitted with a group of idler pinions (6) which are linked to other pinions (4) coupled directly to the front axle (2) or by means of chains (5). The rear shaft (7) comprises a tubular structure and a fixing mechanism to independently connect one of the idler pinions (6) to the rear shaft (7). The rear shaft (7) includes a toothed wheel that transmits its movement to an idler pinion connected to a conventional plate (3) that transmits its movement to a back wheel of the bicycle. Said bottom bracket shell has a simpler shape than other similar bottom bracket shells and provides better transmission output.

Description

CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETASPEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención, tal y como se expresa en el enunciado de esta memoria descriptiva, se refiere a una caja de pedalier con microca bio incorporado para bicicletas que incorpora en su interior básicamente un eje anterior donde se conectan los pedales y un árbol posterior provisto de un grupo de piñones que se vinculan, directamente o mediante unas cadenas intermedias, con otros piñones enfrentados acoplados al eje de los pedales.The present invention, as expressed in the statement of this specification, refers to a bottom bracket with built-in microcane for bicycles that basically incorporates in its interior an anterior axis where the pedals are connected and a rear axle provided with a group of sprockets that are linked, directly or through intermediate chains, with other facing sprockets coupled to the pedal axle.
Sobre el eje de los pedales se acopla a su vez un plato exterior donde se conecta una cadena convencional que transmitirá la tracción a la rueda trasera a través de un único piñón solidario de dicha rueda. El árbol posterior incluye al menos otro piñón extremo vinculado con otro parejo del eje anterior que es solidario del plato exterior.On the axis of the pedals, an outer plate is coupled, in which a conventional chain is connected, which will transmit the traction to the rear wheel through a single sprocket of said wheel. The rear axle includes at least one other end pinion linked to another pair of the anterior axis that is integral with the outer plate.
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
En la actualidad, los cambios de marchas para bicicletas se componen normalmente, de dos dispositivos similares, uno anterior para los platos y otro posterior para los piñones de la rueda motriz, solidarios los mismos con el eje trasero.At present, the changes of gears for bicycles are normally composed of two similar devices, one before for the plates and another one for the sprockets of the driving wheel, integral with the same with the rear axle.
Estos dispositivos actúan sobre la cadena de manera que la hacen saltar de uno a otro piñón, de uno a otro plato, con el fin de hacer variar las relaciones de giro.These devices act on the chain so that they make it jump from one to another pinion, from one to another plate, in order to vary the turning ratios.
Estos cambios son exteriores y están supeditados a golpes, desgastes, oxidaciones, etc.; que favorecen su mal funcionamiento. Además, al actuar directamente sobre la cadena, la deforman y estropean debido a las fuertes tensiones y torsiones a que la someten.These changes are exterior and are subject to shocks, wear, oxidation, etc .; that favor its malfunction. In addition, by acting directly on the chain, they deform and damage it due to the strong tensions and torsions to which it is subjected.
Por otro lado, la patente de invención númeroOn the other hand, the invention patent number
9502063 consiste en una caja de pedalier que incluye un eje anterior provisto de un grupo de piñones que trasmiten su movimiento a un árbol posterior, con interposición de un piñón intermedio, conectándose los pedales en los extremos del eje anterior.9502063 consists of a bottom bracket that includes a front axle provided with a group of pinions that transmit its movement to a rear axle, with interposition of an intermediate pinion, connecting the pedals at the ends of the anterior axis.
La caja incorpora un mecanismo de trasmisión del movimiento giratorio del árbol posterior a un plato convencional acoplado exterior y libremente al eje de los pedales .The box incorporates a mechanism for transmitting the rotary movement of the rear axle to a conventional plate coupled externally and freely to the axis of the pedals.
Esta nueva caja de pedalier, aunque resuelve los problemas citados anteriormente, presenta el inconve- niente de que el rendimiento de la misma no es todo lo bueno que cabría esperar, debido principalmente a que parte de la potencia y energía del usuario se pierde en el rozamiento entre los distintos piñones y engranajes de la caja de pedalier. DESCRIPCIÓN DE LA INVENCIÓNThis new bottom bracket, although it solves the problems mentioned above, has the disadvantage that its performance is not all the good that would be expected, mainly because part of the user's power and energy is lost in the friction between the different pinions and gears of the bottom bracket. DESCRIPTION OF THE INVENTION
Para subsanar los problemas e inconvenientes mencionados en el apartado anterior, la invención propone una nueva caja de pedalier con microcambio incorporado para bicicletas que comprende en principio, una carcasa fijada sobre la parte inferior del bastidor de una bicicleta en correspondencia con el eje de los pedales que se acopla en la carcasa. Sobre el eje anterior existe un plato convencional donde se conecta una cadena que transmitirá su movimiento a un único piñón unido a la rueda trasera de la bicicleta.To remedy the problems and inconveniences mentioned in the previous section, the invention proposes a new bottom bracket with built-in microchange for bicycles that comprises, in principle, a housing fixed on the bottom of the frame of a bicycle in correspondence with the axis of the pedals that fits into the housing. On the previous axis there is a conventional plate where a chain is connected that will transmit its movement to a single pinion attached to the rear wheel of the bicycle.
El eje de los pedales incluye un grupo de piñones que giran solidariamente con el citado eje, a la vez que los mismos se vinculan, bien directamente o a través de unas cortas cadenas intermedias, con sendos piñones acoplados en principio libremente en un árbol posterior de estructura tubular.The axis of the pedals includes a group of sprockets that rotate in solidarity with the aforementioned axle, at the same time that they are linked, either directly or through short intermediate chains, with two sprockets coupled in principle freely in a rear structure tree tubular.
El árbol posterior incluye al menos otro piñón extremo que gira solidariamente con dicho árbol, a la vez que se asocia, a un piñón loco acoplado en el eje anterior y el cual se solidariza con el plato convencional. De todas las cortas cadenas de asociación entre los dos grupos de piñones enfrentados del eje anterior y árbol posterior, solamente una de ellas transmitirá un movimiento giratorio al árbol posterior, el cual transmitirá a su vez el movimiento al plato mediante el piñón extremo del referido árbol posterior.The rear axle includes at least one other end pinion that rotates in solidarity with said tree, at the same time as it is associated with a crazy pinion coupled on the anterior axis and which is in solidarity with the conventional plate. Of all the short association chains between the two groups of sprockets facing the front and rear axle, only one of them will transmit a rotating movement to the rear axle, which will in turn transmit the movement to the plate by means of the end pinion of the aforementioned tree later.
Para ello, el árbol posterior de estructura tubular, incluye en su interior un ventajoso mecanismo de anclaje para solidarizar el árbol con uno de los engránajes perteneciente al grupo de piñones acoplado a dicho árbol. Este cuenta con una ranura longitudinal por donde se guía un pestillo o uñeta retráctil perteneciente al mecanismo de anclaje, enganchándose dicho pestillo con el correspondiente engranaje. El mecanismo de anclaje se gobierna mediante un cable que se encuentra conectado a una sola palanca de mandos convencional o similar.To do this, the rear tree with a tubular structure, includes inside it an advantageous anchoring mechanism to support the tree with one of the gears belonging to the group of pinions coupled to said tree. This has a longitudinal groove through which a latch or retractable lug belonging to the anchoring mechanism is guided, said latch engaging with the corresponding gear. The anchoring mechanism is governed by a cable that is connected to a single conventional or similar joystick.
A continuación para facilitar una mejor comprensión de esta memoria descriptiva y formando parte integrante de la misma se acompañan unas figuras en las que con carácter ilustrativo y no limitativo se ha representado el objeto de la invención.Next, in order to facilitate a better understanding of this descriptive report and forming an integral part thereof, some figures are attached in which the object of the invention has been illustrated and not limited to.
BREVE DESCRIPCIÓN DE LOS DIBUJOSBRIEF DESCRIPTION OF THE DRAWINGS
Figura 1.- Representa una vista en planta seccionada de la caja de pedalier con microcambio incorporado para bicicletas, objeto de la invención.Figure 1.- Represents a sectioned plan view of the bottom bracket housing with microchange incorporated for bicycles, object of the invention.
Figura 2.- Representa una vista lateral de la caja de pedalier.Figure 2.- Represents a side view of the bottom bracket.
Figura 3.- Representa una vista en alzado seccionado de un mecanismo de bloqueo o anclaje de unos piñones que forman parte de la invención.Figure 3.- Represents a sectional elevation view of a locking or anchoring mechanism of pinions that are part of the invention.
Figura 4.- Representa una vista en perfil seccionado del mecanismo de bloqueo referido en la figura anterior. Figura 5.- Representa una vista de la caja de pedalier donde se muestra una segunda realización.Figure 4.- Represents a sectioned view of the locking mechanism referred to in the previous figure. Figure 5.- Represents a view of the box bottom bracket where a second embodiment is shown.
DESCRIPCIÓN DE LA FORMA DE REALIZACIÓN PREFERIDADESCRIPTION OF THE PREFERRED EMBODIMENT
En una primera realización, haciendo referencia a la numeración adoptada en las figuras 1 a 4, la caja de pedalier con microcambio incorporado para bicicletas se constituye a partir de una carcasa 1 fijada en la parte inferior del bastidor de una bicicleta en correspondencia con un eje anterior 2, en cuyos extremos exteriores se conectan unos pedales no representados en las figuras. Sobre el eje de los pedales 2 se acopla un plato convencional 3 donde se conectará una cadena alargada vinculada a un único piñón de la rueda trasera de la bicicleta para transmitir el movimiento giratorio a dicha rueda trasera o rueda motriz de la bicicleta. El eje anterior 2 de los pedales incluye un grupo de piñones delantero 4 que giran solidariamente en todo momento con el eje 2, a la vez que los mismos se vinculan, a través de unas cortas cadenas intermedias 5, con otro grupo de piñones traseros 6 acoplados libremente en un árbol posterior 7 de estructura tubular, el cual se acopla a la carcasa 1 con interposición de unos rodamientos 8. El eje anterior 2 también se acopla a la carcasa 1 con interposición de otros rodamientos 9.In a first embodiment, referring to the numbering adopted in Figures 1 to 4, the bottom bracket with built-in microchange for bicycles is constituted from a housing 1 fixed at the bottom of the frame of a bicycle in correspondence with an axle previous 2, at whose outer ends are connected pedals not shown in the figures. On the axis of the pedals 2 a conventional plate 3 is coupled where an elongated chain linked to a single sprocket of the rear wheel of the bicycle will be connected to transmit the rotating movement to said rear wheel or driving wheel of the bicycle. The front axle 2 of the pedals includes a group of front sprockets 4 that rotate in solidarity at all times with the axis 2, at the same time that they are linked, through short intermediate chains 5, with another group of rear sprockets 6 freely coupled in a rear axle 7 of tubular structure, which is coupled to the housing 1 with interposition of some bearings 8. The anterior axis 2 is also coupled to the housing 1 with interposition of other bearings 9.
El árbol posterior 7 incluye al menos una rueda dentada 10 que gira solidariamente con dicho árbol 7, a la vez que se vincula, mediante otra corta cadena 11, con un piñón loco 12 acoplado en el eje anterior 2. Este piñón loco 12 se solidariza con el plato convencional 3 mediante un casquillo o cuerpo tubular 13. En el interior del árbol tubular 7 existe un mecanismo de anclaje 14 destinado para solidarizar independientemente cada una de las ruedas dentadas del grupo de piñones traseros 6 con el propio árbol 7 a fin de conseguir las distintas velocidades de salida del plato convencional 3. El mecanismo de anclaje 14 comprende una corredera 15 provista de una cavidad cilindrica 16 donde se ajusta un pequeño pistón 17 con interposición de un resorteThe rear axle 7 includes at least one cogwheel 10 that rotates in solidarity with said shaft 7, at the same time as it is connected, by another short chain 11, with a crazy pinion 12 coupled on the front axle 2. This crazy pinion 12 is in solidarity with the conventional plate 3 by means of a bushing or tubular body 13. Inside the tubular shaft 7 there is an anchoring mechanism 14 designed to independently support each of the sprockets of the rear sprocket group 6 with the shaft 7 itself in order to achieve the different output speeds of the conventional dish 3. The anchoring mechanism 14 comprises a slide 15 provided with a cylindrical cavity 16 where a small piston 17 is fitted with interposition of a spring
18 que empuja al citado pistón 17 hacia arriba, el cual incluye una pequeña uñeta 19 encajada y guiada en una ranura longitudinal 20 establecida en el árbol posterior 7 en correspondencia con los engranajes del grupo de piñones traseros 6. La uñeta 19 sobresale al exterior con respecto al diámetro de fuera del árbol posterior 7. Cada uno de los engranajes del grupo de piñones traseros 6 está afectado de al menos un rebaje o entrante interno 21 establecido en correspondencia con el diámetro de dentro de los citados piñones 6, de tal manera que situando axialmente la corredera 15 en un lugar a lo largo del árbol 7, la uñeta 19 se introducirá en uno de los rebajes internos 21 de un engranaje del grupo de piñones traseros 6, con lo cual, el árbol 7 será arrastrado por el correspondiente piñón 6 en su movimiento de rotación que se transmitirá hasta el plato convencional 3 a través de la rueda dentada 10 del árbol posterior 7 y el piñón loco 12 solidarizado con el plato 3.18 which pushes said piston 17 upwards, which includes a small nail 19 fitted and guided in a longitudinal groove 20 established in the rear axle 7 in correspondence with the gears of the rear pinion group 6. The nail 19 protrudes outwardly with with respect to the diameter of outside the rear axle 7. Each of the gears of the rear pinion group 6 is affected by at least one internal recess or recess 21 established in correspondence with the diameter inside the said pinions 6, such that axially placing the slide 15 in a place along the shaft 7, the nail 19 will be introduced into one of the internal recesses 21 of a gear of the rear pinion group 6, whereby, the shaft 7 will be dragged by the corresponding pinion 6 in its rotational movement that will be transmitted to the conventional plate 3 through the gearwheel 10 of the rear axle 7 and the idler 12 in solidarity with the p can 3.
Para facilitar el desplazamiento axial del conjunto del mecanismo de enganche 14, la parte de la uñetaTo facilitate axial displacement of the hitch mechanism assembly 14, the part of the nail
19 que sobresale hacia afuera y que se encaja en el respectivo entrante complementario 21, dicha parte exterior comprende dos planos inclinados 22 suavemente curvados y enfrentados .19 protruding outwardly and which fits into the respective complementary recess 21, said outer part comprises two inclined planes 22 gently curved and facing each other.
Los entrantes 21 de los piñones 6 del árbol posterior 7 también están afectados de un tramo curvo- cóncavo 23 que facilita el desplazamiento axial del mecanismo de enganche 14 y por lo tanto, el cambio de velocidades de la caja de pedalier de la invención.The recesses 21 of the pinions 6 of the rear axle 7 are also affected by a curved-concave section 23 which facilitates the axial displacement of the coupling mechanism 14 and therefore, the change of speeds of the bottom bracket of the invention.
El mecanismo de anclaje 14 se gobierna mediante un cable 24 que se encuentra conectado por un extremo a la corredera 15, mientras que por el extremo opuesto se conecta con una palanca de mandos convencional no representada en las figuras.The anchoring mechanism 14 is governed by a cable 24 that is connected at one end to the slide 15, while at the end opposite is connected with a conventional joystick not shown in the figures.
Por otro lado, en vez de fijar solidariamente la rueda dentada 10 al árbol posterior 7, se ha previsto la posibilidad de incluir un segundo mecanismo de enganche para al menos dos piñones extremos acoplados en principio libremente en el árbol posterior 7, con lo cual, obtendremos el doble de velocidades en la caja de la invención.On the other hand, instead of fixing the cogwheel 10 in solidarity with the rear axle 7, the possibility of including a second engagement mechanism is provided for at least two end sprockets, which are initially freely engaged in the rear axle 7, whereby, We will get twice the speed in the box of the invention.
En una segunda realización de la invención (figura 5), se prescinde de las cadenas de transmisión 5 y 11, de manera que el grupo de piñones del eje anterior 2 referenciados ahora con el número 4 ' engranarán directamente con otro grupo de piñones 6 ' acoplados libremente en el árbol posterior 7. Igualmente, la rueda dentada solidaria del árbol posterior 7 y referenciada con el número 10' engranará directamente con el piñón loco 12' acoplado al eje anterior 2 solidarizado al plato convencional 3. In a second embodiment of the invention (Figure 5), the transmission chains 5 and 11 are dispensed with, so that the pinion group of the front axle 2 now referenced with the number 4 'will directly engage with another group of pinions 6' freely coupled to the rear axle 7. Similarly, the cogwheel integral with the rear axle 7 and referenced with the number 10 'will engage directly with the idler 12' coupled to the front axle 2 in solidarity with the conventional plate 3.

Claims

REIVINDICACIONES 1.- CAJA DE PEDALIER CON MICROCA BIO INCORPORADO PARA BICICLETAS, que incluye una carcasa (1) fijada en la parte inferior de un bastidor de una bicicleta, a la vez que en dicha carcasa (1) se acopla un eje anterior (2) de los pedales y un árbol posterior (7); existiendo un plato convencional (3) de acoplamiento de una cadena principal de trasmisión a un piñón solidario de la rueda trasera o motriz de la bicicleta, estando acoplado libremente dicho plato convencional (3) alrededor del eje anterior (2); incorporando el eje (2) de los pedales un grupo de piñones delanteros (4) solidarios del citado eje (2), a la vez que los mismos trasmiten su movimiento giratorio al árbol posterior (7) mediante unos medios de trasmisión, existien- do además otros medios de transmisión desde el árbol posterior (7) al plato convencional (3); caracterizada porque incluye un grupo de piñones traseros (6, 6') acoplado libremente alrededor del árbol posterior (7), grupo de piñones (6, 6') que se encuentra vinculado y enfrentado con el grupo de piñones delanteros (4, 4') solidario del eje anterior (2); existiendo además, un mecanismo (14) de anclaje selectivo de uno de los piñones traseros (6) con el árbol posterior (7).CLAIMS 1.- PEDALIER BOX WITH BIO MICROCA INCORPORATED FOR BICYCLES, which includes a carcass (1) fixed at the bottom of a bicycle frame, while in said carcass (1) a front axle (2) is attached ) of the pedals and a rear axle (7); there is a conventional plate (3) for coupling a main transmission chain to a sprocket integral to the rear wheel or driving of the bicycle, said conventional plate (3) being freely coupled around the anterior axis (2); incorporating the axle (2) of the pedals a group of front sprockets (4) integral with said axle (2), at the same time that they transmit their rotary movement to the rear axle (7) by means of transmission, existing in addition other means of transmission from the rear axle (7) to the conventional plate (3); characterized in that it includes a group of rear sprockets (6, 6 ') freely coupled around the rear axle (7), group of sprockets (6, 6') that is linked and faced with the group of front sprockets (4, 4 ' ) solidarity of the anterior axis (2); There is also a mechanism (14) for selective anchoring of one of the rear sprockets (6) with the rear axle (7).
2.- CAJA DE PEDALIER CON MICROCAMBIO INCORPO- RADO PARA BICICLETAS, según reivindicación 1, caracterizada porque los medios de transmisión de los piñones delanteros2.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 1, characterized in that the transmission means of the front sprockets
(4) al árbol posterior (7) consisten en unas cortas cadenas(4) to the rear tree (7) consist of short chains
(5) que vinculan dichos piñones delanteros (4) con el grupo de piñones (6) acoplados libremente alrededor del árbol posterior (7) .(5) linking said front sprockets (4) with the group of sprockets (6) freely coupled around the rear axle (7).
3.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación 1, caracterizada porque los medios de transmisión de los piñones delanteros (4') al árbol posterior (7) se realiza directamente al engranar dichos piñones delanteros (4') con los piñones (6') acoplados libremente en el árbol posterior (7).3.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 1, characterized in that the transmission means of the front sprockets (4 ') to the rear axle (7) is carried out directly when engaging said front sprockets (4') with the pinions (6 ') freely coupled to the rear axle (7).
4.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación 1, caracterizada porque el árbol posterior (7) comprende una estructura cilíndrico-tubular y está provisto de al menos una ranura longitudinal (20) que comunica con el interior del citado árbol posterior (7).4.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 1, characterized in that the rear axle (7) comprises a cylindrical-tubular structure and is provided with at least one longitudinal groove (20) that communicates with the interior of said tree posterior (7).
5.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación 1, caracterizada porque los piñones traseros (6, 6') del eje posterior (7) incluyen al menos un rebaje interno (21) en correspondencia con el diámetro de dentro de dichos piñones traseros (6, 6').5.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 1, characterized in that the rear sprockets (6, 6 ') of the rear axle (7) include at least one internal recess (21) corresponding to the diameter of within said rear sprockets (6, 6 ').
6.- CAJA DE PEDALIER CON MICROCAMBIO INCORPO- RADO PARA BICICLETAS, según reivindicaciones anteriores, caracterizada porque el mecanismo de anclaje (14) consiste en una corredera (15) ajustada en el interior del árbol posterior (7), contando la corredera (15) con una cavidad (16) donde se encaja un pistón (17) con interposición de un resorte de empuje (18), incluyendo el citado pistón (17) una uñeta (19) encajada y guiada en la ranura longitudinal (20) del árbol posterior (7), uñeta (19) que sobresale hacia afuera por su parte superior para anclarse en uno de los rebajes internos (21) del respectivo piñón trasero (6, 6'); todo ello en orden a que desplazando axial ente la corredera (15) mediante un cable convencional (24) de una palanca de mandos, la uñeta (19) solidarice uno de los piñones traseros (6, 6') con el árbol (7) arrastrando a éste en su movimiento giratorio. 6.- PEDALIER BOX WITH INCORPORATED MICROCHANGE FOR BICYCLES, according to previous claims, characterized in that the anchoring mechanism (14) consists of a slide (15) adjusted inside the rear axle (7), counting the slide (15 ) with a cavity (16) where a piston (17) is fitted with interposition of a thrust spring (18), said piston (17) including a clamp (19) embedded and guided in the longitudinal groove (20) of the shaft rear (7), fingernail (19) protruding outwardly from its upper part to anchor in one of the internal recesses (21) of the respective rear sprocket (6, 6 '); all this in order to move axially the slider (15) by means of a conventional cable (24) of a control lever, the clamp (19) solidarity one of the rear sprockets (6, 6 ') with the shaft (7) dragging it in its rotating motion.
7.- CAJA DE PEDALIER CON MICROCAMBIO INCORPO¬7.- PEDALIER BOX WITH INCORPO MICROCHANGE
RADO PARA BICICLETAS, según reivindicación 1, caracterizada porque los medios de transmisión del árbol posterior (7) al plato convencional (3), consisten dichos medios en al menos una rueda dentada (10) solidaria del árbol posterior (7), la cual se asocia con un piñón loco (12) acoplado alrededor del eje anterior (2), a la vez que está unido al plato convencional (3) a través de un cuerpo tubular (13). RADO FOR BICYCLES, according to claim 1, characterized in that the transmission means of the rear axle (7) to the conventional plate (3), said means consist of at least one cogwheel (10) integral with the rear axle (7), which is associated with a crazy pinion (12) coupled around the anterior axis (2), while being connected to the conventional plate (3) through a tubular body (13).
8.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación anterior, caracterizada porque la rueda dentada (10) y el piñón loco (12) acoplado en el eje anterior (2), se relacionan mediante una corta cadena intermedia (11).8.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to previous claim, characterized in that the gearwheel (10) and the idler (12) coupled on the front axle (2), are related by a short intermediate chain (11) .
9.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación 7, caracterizada porque la rueda dentada (10') y el piñón loco (12') acoplado en el eje anterior (2) se relacionan directamente engranando entre sí.9.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 7, characterized in that the cogwheel (10 ') and the idler pinion (12') coupled on the front axle (2) are directly related by engaging each other.
10.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación 1, caracterizada porque los medios de transmisión del árbol posterior (7) al plato convencional (3), consisten dichos medios en al menos varias ruedas dentadas locas acopladas en el árbol posterior (7) y las cuales se vinculan con sendos piñones locos acoplados alrededor del eje anterior (2), estando unidos dichos piñones locos al plato convencional (3); incluyéndose un mecanismo de anclaje (14) de una de las ruedas dentadas locas acopladas al árbol posterior (7).10.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 1, characterized in that the transmission means of the rear axle (7) to the conventional plate (3), said means consist of at least several crazy cogwheels coupled in the rear axle. (7) and which are linked with two crazy pinions coupled around the anterior axis (2), said crazy pinions being attached to the conventional plate (3); including an anchoring mechanism (14) of one of the crazy sprockets coupled to the rear axle (7).
11.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación anterior, caracterizada porque las ruedas dentadas locas del árbol posterior (7) y los piñones locos del eje anterior (2) se vinculan mediante unas cortas cadenas .11.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to previous claim, characterized in that the crazy cogwheels of the rear axle (7) and the crazy pinions of the anterior axle (2) are linked by short chains.
12.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación 10, caracteriza- da porque las ruedas dentandas locas del árbol posterior (7) y los piñones locos del eje anterior (2) se vinculan directamente engranando entre sí.12.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 10, characterized in that the crazy cogwheels of the rear axle (7) and the crazy pinions of the anterior axle (2) are linked directly by engaging each other.
13.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación 6, caracterizada porque la uñeta (19) del mecanismo de anclaje (14) compren- de dos planos inclinados (22) enfrentados y suavemente curvados .13.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 6, characterized in that the clamp (19) of the anchoring mechanism (14) comprises of two inclined planes (22) facing and gently curved.
14.- CAJA DE PEDALIER CON MICROCAMBIO INCORPORADO PARA BICICLETAS, según reivindicación 5, caracterizada porque los rebajes internos (21) de los piñones traseros (6, 6') están afectados de un tramo extremo curvo-cóncavo (23). 14.- PEDALIER BOX WITH MICROCHANGE INCORPORATED FOR BICYCLES, according to claim 5, characterized in that the internal recesses (21) of the rear sprockets (6, 6 ') are affected by a curved-concave end section (23).
PCT/ES2000/000196 1999-06-04 2000-06-01 Bottom bracket shell with built-in micro-derailleur for bicycles WO2000075005A1 (en)

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ESP9901233 1999-06-04

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2221512A1 (en) * 2002-01-18 2004-12-16 Norberto Santin Piedrafita Group-throttle gear for bicycle, has set of pine nuts mounted on bottom bracket and set of pinions that are equipped on secondary axis, and secondary axis located parallel to bottom bracket
NL2002788C2 (en) * 2009-04-23 2010-10-26 Teunis Karel Van Ee TRANSMISSION.
BE1018925A3 (en) * 2009-04-24 2011-11-08 Ee Teunis Karel Van TRANSMISSION.
WO2014158120A1 (en) * 2013-03-28 2014-10-02 Donchenko Iurii Viktorovych Stepped mechanical transmission
CN104393214A (en) * 2014-11-13 2015-03-04 镇江奥美机电设备有限公司 Double-face multipoint transmission oil pumping box
EP3028934A1 (en) * 2014-12-03 2016-06-08 Robert Bosch GmbH Drive device for a vehicle driven with the aid of the engine and/or pedal power

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FR795941A (en) * 1934-10-15 1936-03-25 Gear shifting for bicycles
DE688932C (en) * 1936-10-09 1940-03-06 Friedrich Weber Change gears, especially for bicycles
US2505464A (en) * 1943-11-16 1950-04-25 Debuit Louis Bicycle or motorcycle carrying a single steering wheel and transmission gears and connections therefor
US4716777A (en) * 1986-05-08 1988-01-05 Hartmann Dirck T Multiple speed transmission for pedal powered vehicles
ES2002522A6 (en) * 1986-10-08 1988-08-16 Cebriain Mata Juan Transmission system for human traction vehicles (Machine-translation by Google Translate, not legally binding)
ES2092628T3 (en) * 1991-07-22 1996-12-01 Perego Pines Gmbh MECHANICAL GEAR SHIFT FOR TOY CARS.
WO1999006269A1 (en) * 1997-07-30 1999-02-11 Cruz Garmendia Altuna Improved driving flange with pedals

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR795941A (en) * 1934-10-15 1936-03-25 Gear shifting for bicycles
DE688932C (en) * 1936-10-09 1940-03-06 Friedrich Weber Change gears, especially for bicycles
US2505464A (en) * 1943-11-16 1950-04-25 Debuit Louis Bicycle or motorcycle carrying a single steering wheel and transmission gears and connections therefor
US4716777A (en) * 1986-05-08 1988-01-05 Hartmann Dirck T Multiple speed transmission for pedal powered vehicles
ES2002522A6 (en) * 1986-10-08 1988-08-16 Cebriain Mata Juan Transmission system for human traction vehicles (Machine-translation by Google Translate, not legally binding)
ES2092628T3 (en) * 1991-07-22 1996-12-01 Perego Pines Gmbh MECHANICAL GEAR SHIFT FOR TOY CARS.
WO1999006269A1 (en) * 1997-07-30 1999-02-11 Cruz Garmendia Altuna Improved driving flange with pedals

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2221512A1 (en) * 2002-01-18 2004-12-16 Norberto Santin Piedrafita Group-throttle gear for bicycle, has set of pine nuts mounted on bottom bracket and set of pinions that are equipped on secondary axis, and secondary axis located parallel to bottom bracket
NL2002788C2 (en) * 2009-04-23 2010-10-26 Teunis Karel Van Ee TRANSMISSION.
WO2010123363A1 (en) * 2009-04-23 2010-10-28 Teunis Karel Van Ee Transmission
BE1018925A3 (en) * 2009-04-24 2011-11-08 Ee Teunis Karel Van TRANSMISSION.
WO2014158120A1 (en) * 2013-03-28 2014-10-02 Donchenko Iurii Viktorovych Stepped mechanical transmission
CN104393214A (en) * 2014-11-13 2015-03-04 镇江奥美机电设备有限公司 Double-face multipoint transmission oil pumping box
EP3028934A1 (en) * 2014-12-03 2016-06-08 Robert Bosch GmbH Drive device for a vehicle driven with the aid of the engine and/or pedal power

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