WO2014064303A1 - Compact differential - Google Patents

Compact differential Download PDF

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Publication number
WO2014064303A1
WO2014064303A1 PCT/ES2013/000221 ES2013000221W WO2014064303A1 WO 2014064303 A1 WO2014064303 A1 WO 2014064303A1 ES 2013000221 W ES2013000221 W ES 2013000221W WO 2014064303 A1 WO2014064303 A1 WO 2014064303A1
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Prior art keywords
teeth
pinion
satellite
differential
pinions
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PCT/ES2013/000221
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Spanish (es)
French (fr)
Inventor
Eduardo García Sánchez
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Eduardo García Sánchez
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Publication of WO2014064303A1 publication Critical patent/WO2014064303A1/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
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
    • 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
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H2048/106—Differential gearings with gears having orbital motion with orbital spur gears characterised by two sun gears
    • 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
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H2048/385—Constructional details of the ring or crown gear

Definitions

  • the present invention relates to a differential oriented rear or front-wheel drive vehicles.
  • automotive under normal conditions, it is required to send the same torque to the right wheel and to the left. This is usually achieved with satellites that use conical pinions.
  • This solution implies a larger set dimension than the design to be exposed and, consequently, more weight.
  • the teeth of the pinions of the satellites produce axial forces that make tapered roller bearings, expensive and with greater friction than those of balls, necessary. This requirement is not needed in this design.
  • the present invention uses standard gears with lowered dentures, experienced and usual elements, which guarantee a reliable design while maintaining a reasonable cost.
  • the objective is to achieve the differential "plane” using two planes of mechanisms instead of three. This is achieved as follows: (Fig. 5 and Fig. 6)
  • the first plane of mechanisms consists only of a pinion (2) attached to the first output shaft (6), which meshes with a pinion (l) that makes of satellite, whose axis (7) describes a circle for being housed in a hole (19) of the satellite carrier (8).
  • the second plane of mechanisms consists of a second satellite (3) that forms a single piece with the previous satellite ( l) and that it has fewer teeth than this. Said satellite (3) does not make contact with a pinion (4) integral with the second output shaft (9), but is connected to it by an intermediate pinion (5) that meshes with both.
  • This intermediate pinion rotates with respect to an axis (10) moved by the satellite carrier.
  • the number of teeth of the first satellite (1) divided by the number of teeth of the pinion (2) of the first output shaft is equal to the number of teeth of the second satellite (3) divided by the number of teeth of the pinion (4) of the second output shaft
  • the pinion (5) that connects the second satellite with the pinion of the second output shaft restores the direction of rotation.
  • FIG. 5 A satellite carrier (8) that receives the movement to be transmitted and whose mission is to produce two-axis circular paths (10 and (7)) for each group of satellites.
  • extension (l 1) that enters a cavity of the other (12) in order to make the assembly support a felting moment.
  • FIG. 6 A double satellite, formed by two pifions (1) and (3) being the number of teeth Zl greater than Z3, not having, said pinions, relative movement with each other.
  • the pinion with the largest number of teeth Zl meshes with the pinion (2) belonging to the first output shaft.
  • FIG. 6 Another satellite consisting of a single pinion (5), which meshes with the pinion (3) of the double satellite and with the pinion (4) integral to the second output shaft.
  • the Z 1 / Z2 ratio is equal to the Z3 / Z4 ratio.
  • the bearings (14) or friction surfaces of the satellite carrier (8) can rest exclusively on the differential output shafts, (Fig. 4) in this case said shafts (6) and (9) will rest on the bed by means of bearings (16).
  • the other possibility (Fig. 3) consists of supporting the satellite carrier on the bench using bearings (17), the differential output shafts will use bearings or friction surfaces resting on the satellite carrier.
  • the movement can reach the satellite carrier by means of conical pinions, hypoid pinions (Fig. 4) (23), straight pinions or by means of a crown of inner teeth and pinion, these gears can be, of teeth with straight teeth or (Fig. 3 ) helical (21).
  • the pinions (2) and (4) integral to the output shafts are integral to the pinions (2) and (4) integral to the output shafts.
  • LaFig. (3) represents the complete differential without its bench with an outer crown of helical teeth (21).
  • the differential support with respect to its bench is made through the satellite carrier by means of the bearing (17).
  • Fig. (4) represents the complete differential without its bed with a hypoid gear.
  • the differential support with respect to its bench is made through the output shafts by means of the bearing (16) .E1 axis (22) of the hypoid pinion (23) that goes to the motor is sectioned, the other extension serves to support the bearing base (24)
  • Fig. (5) represents the expanded differential. Only one group of satellites has been represented.
  • Fig. (6) represents, enlarged, the gearing of a group of satellites with the pinions integral to the output shafts.
  • FIG. 5 represents a differential in which the movement reaches the satellite carrier by means of a hypoid gear system.
  • the satellite carrier produces circular paths to the axes of the satellites.
  • the use of three groups of satellites has been chosen. Only one has been represented. The group is formed by a satellite composed of two pifions without relative movement, of different number of teeth Zl and Z3. The largest, of Zl teeth, meshes directly with the Z2 pinion integral to the first output shaft. The minor, of Z3 teeth, communicates the movement to the pipion Z4, integral to the second output axis, by means of an intermediate pipion (5).

Abstract

The invention relates to a differential that is more compact and lightweight than conventional differentials of conical planetary gears, producing the same torque in the output shafts, allowing the elimination or a reduction in the size of the bearings intended to combat axial forces, reducing friction and lowering costs. The increase in the size of the differential shafts improves the performance of the suspensions. In rigid-axle vehicles, the reduction in the sprung mass is beneficial. In general, ground clearance is improved. The invention uses a group of planetary gears, comprising a pinion Z1 that meshes directly with pinion Z2 of the output shaft of the differential, and a pinion Z3 solidly connected to pinion Z1 and with less teeth, which is connected to pinion Z4 of the second output shaft by means of pinion Z5. The relationship: Z1/ Z2 = Z3/Z4 ensures equal torque values on the shafts. In order to reduce the size of the output shafts, the invention uses friction surfaces or bearings coupled to the projection (11) of one of same and to the cavity in the other, such that the assembly is not sensitive to bending moments.

Description

Diferencial compacto  Compact differential
CAMPO DE LA INVENCIÓN FIELD OF THE INVENTION
La presente invención se refiere a un diferencial orientado a vehículos de tracción trasera o delantera. En automoción, en condiciones normales, se requiere enviar el mismo par a la rueda derecha y a la izquierda. Esto se consigue habitualmente con satélites que utilizan piñones cónicos. Esta solución implica un dimensionamiento del conjunto más grande que el diseño que se va a exponer y, consecuentemente, más peso. Los dientes de los piñones de los satélites producen esfuerzos axiales que hacen necesarios rodamientos de rodillos cónicos, caros y con mayor rozamiento que los de bolas. Este requerimiento no se necesita en el presente diseño. Estas consideraciones hacen atractivo el proyecto, en particular para el diseño de los coches que pretenden un gran ahorro de energía y se actúa minimizando el peso de todos los componentes e intentando optimizar todos los componentes susceptibles de rozamiento. The present invention relates to a differential oriented rear or front-wheel drive vehicles. In automotive, under normal conditions, it is required to send the same torque to the right wheel and to the left. This is usually achieved with satellites that use conical pinions. This solution implies a larger set dimension than the design to be exposed and, consequently, more weight. The teeth of the pinions of the satellites produce axial forces that make tapered roller bearings, expensive and with greater friction than those of balls, necessary. This requirement is not needed in this design. These considerations make the project attractive, in particular for the design of cars that claim a great energy saving and it acts by minimizing the weight of all the components and trying to optimize all the components susceptible to friction.
DESCRIPCION DE LA TECNICA RELACIONADA DESCRIPTION OF THE RELATED TECHNIQUE
Con el fin de evitar los piñones cónicosde los diferenciales, se ha ideado utilizar dos satélites que engranan entre sí con el fin de invertir el movimiento, y, en sus zonas extremas engranan con las coronas solidarias a los ejes de salida. El inconveniente de dicha disposición es que el conjunto utiliza engranajes en tres planos paralelos con la consecuente anchura. Una reducción de dicha anchura, además de disminuir el volumen, permite ahorrar material en el diseño del pórtasatélites que se hace más rígido. Un diseño que consigue utilizar solamente dos planos de engranajes es lapatente n°US 2011/0245012 Al. Se observa que para conseguir mantener la igualdad de pares en los ejes de salida recurre a engranajes no normalizados que necesitan utilizar dientes más frágiles y con menor rendimiento por tener mayor deslizamiento ya que engranan en un entorno más alejado de sus ruletas. Además de esta dificultad y el encarecimiento de dichos engranajes, la necesidad de sobredimensionar el engranaje debilitado, disminuye, en cierta medida, el objetivo buscado que consiste en conseguir un diferencial compacto. In order to avoid the conical pinions of the differentials, it has been devised to use two satellites that mesh with each other in order to reverse the movement, and, in their extreme areas, mesh with the crowns in solidarity with the output shafts. The drawback of said arrangement is that the assembly uses gears in three parallel planes with the consequent width. A reduction of said width, in addition to decreasing the volume, saves material in the design of the satellite gate that becomes more rigid. A design that manages to use only two gear planes is patent No. US 2011/0245012 Al. It is observed that in order to maintain equal pairs in the output shafts, it uses non-standard gears that need to use more fragile and less efficient teeth. for having greater slippage as they engage in an environment further away from their roulettes. In addition to this difficulty and the increase in cost of said gears, the need to oversize the weakened gear decreases, to some extent, the objective sought to achieve a compact differential.
La presente invención utiliza engranajes normalizados con dentadura rebajada, elementos experimentados y habituales, que garantizan un diseño fíablemanteniendo un coste razonable.  The present invention uses standard gears with lowered dentures, experienced and usual elements, which guarantee a reliable design while maintaining a reasonable cost.
Las principales ventajas respecto a un diferencial tradicional son:  The main advantages over a traditional differential are:
1) Disminución del volumen.  1) Volume decrease.
2) Disminución del peso.  2) Weight reduction.
3) Eliminación de esfuerzos axiales que permite sub-dimensionar rodamientos y eliminar los rozamientos provenientes de los rodillos cónicos.  3) Elimination of axial stresses that allows sub-dimensioning bearings and eliminating friction from tapered rollers.
4) Reducción del coste de producción.  4) Reduction of production cost.
5) Disminución en anchura que permite aumentar el largo de los palieres, haciendo más constante el ángulo de las ruedas cuando están sometidas a oscilaciones.  5) Decrease in width that allows to increase the length of the bearings, making the angle of the wheels more constant when they are subject to oscillations.
6) En el caso de vehículos de tracción trasera con suspensiones no-independientes, disminución notable de las masas no suspendidas del eje rígido.  6) In the case of rear-wheel-drive vehicles with non-independent suspensions, there is a significant decrease in the unrestrained mass of the rigid axle.
7) Aumento de la altura libre diferencial-carretera EXPLICACIÓN 7) Increase in differential height-road height EXPLANATION
Introducción: Introduction:
El objetivo que se quiere lograr es conseguir hacer el diferencial "plano" utilizando dos planos de mecanismos en vez de tres. Esto se consigue de la siguiente forma: (Fig.5 y Fig.6)El primer plano de mecanismos consta solamente de un piñón (2)unido al primer eje de salida(6), que engrana con un piñón(l) que hace de satélite, cuyo eje(7) describe un círculo por estar alojado en un taladro (19) del porta satélite(8).El segundo plano de mecanismos consta de un segundo satélite(3) que forma una sola pieza con el satélite anterior (l)y que tiene menos dientes que este.Dicho satélite (3) no hace contacto con un piñón(4) solidario al segundo eje de salida(9), sino que está conectado con él mediante un piñón intermedio(5) que engrana con los dos. Este piñón intermedio gira respecto a un eje( 10) movido por el porta-satélites. El número de dientes del primer satélite( 1 ) dividido por el número de dientes del piñón(2)del primer eje de salida es igual alnúmero de dientes del segundo satélite(3) dividido por el número de dientes del piñón(4) del segundo eje de salida.El piñón(5) que conectael segundosatélite con el piñón del segundo eje de salida restablece el sentido de giro.  The objective is to achieve the differential "plane" using two planes of mechanisms instead of three. This is achieved as follows: (Fig. 5 and Fig. 6) The first plane of mechanisms consists only of a pinion (2) attached to the first output shaft (6), which meshes with a pinion (l) that makes of satellite, whose axis (7) describes a circle for being housed in a hole (19) of the satellite carrier (8). The second plane of mechanisms consists of a second satellite (3) that forms a single piece with the previous satellite ( l) and that it has fewer teeth than this. Said satellite (3) does not make contact with a pinion (4) integral with the second output shaft (9), but is connected to it by an intermediate pinion (5) that meshes with both. This intermediate pinion rotates with respect to an axis (10) moved by the satellite carrier. The number of teeth of the first satellite (1) divided by the number of teeth of the pinion (2) of the first output shaft is equal to the number of teeth of the second satellite (3) divided by the number of teeth of the pinion (4) of the second output shaft The pinion (5) that connects the second satellite with the pinion of the second output shaft restores the direction of rotation.
Elementos del que consta: Elements of which it consists:
- (Fig.5): Un porta satélite(8) que recibe el movimiento que se quiere transmitir y cuya misión es producir unas trayectorias circulares a dos ejes(10 y (7), por cada grupo de satélites. - (Fig. 5): A satellite carrier (8) that receives the movement to be transmitted and whose mission is to produce two-axis circular paths (10 and (7)) for each group of satellites.
- (Fig.6): Dos ejes(10) y (7), que son eje de giro de los tres piñones que constituyen un grupo de satélites. Dichos ejes son paralelos entre sí y paralelos con el eje del porta satélites.  - (Fig. 6): Two axes (10) and (7), which are the axis of rotation of the three pinions that constitute a group of satellites. These axes are parallel to each other and parallel with the axis of the satellite carrier.
- (Fig.l y Fig.6):Dos ejes de salida (6) y (9) que comunican el movimiento a los palieres del vehículo. Uno de estos ejes puede constar de una  - (Fig. 1 and Fig. 6): Two output shafts (6) and (9) that communicate the movement to the bearings of the vehicle. One of these axes may consist of a
prolongación(l 1) que entra en una cavidad del otro(12) con el fin de hacer que el conjunto soporte un momento fiector. Se puede utilizar dos rodamientos(13) situados al principio y final de la prolongación, o bien una o varias superficies de fricción(14) y(15). Dependiendo del tipo de diferencial que se pretenda realizar, dichas superficies estarán muy lubrificada o poco, pudiendo utilizarse sustancias con diversos grados de viscosidad. extension (l 1) that enters a cavity of the other (12) in order to make the assembly support a felting moment. You can use two bearings (13) located at the beginning and end of the extension, or one or more surfaces of friction (14) and (15). Depending on the type of differential that is intended to be made, said surfaces will be very lubricated or poorly, substances with varying degrees of viscosity can be used.
- (Fig.1 y Fig.6):Unpiñón (2) con numero de dientes Z2 solidario al primer eje de salida y otro piñón (4)con un numero de dientes Z4 menor que Z2, y solidario al segundo eje de salida.  - (Fig. 1 and Fig. 6): A pinion (2) with number of teeth Z2 integral to the first output shaft and another pinion (4) with a number of teeth Z4 smaller than Z2, and integral to the second output shaft.
- (Fig.6):Un satélite doble, formado por dos pifiones (1) y(3)siendo elnúmero de dientes Zl mayor que Z3, no teniendo, dichos piñones, movimiento relativo entre sí. El piñón con mayor número de dientes Zl engrana con el piñón (2) perteneciente al primer eje de salida.  - (Fig. 6): A double satellite, formed by two pifions (1) and (3) being the number of teeth Zl greater than Z3, not having, said pinions, relative movement with each other. The pinion with the largest number of teeth Zl meshes with the pinion (2) belonging to the first output shaft.
- (Fig.6):Otro satélite constituido por un únicopiñón(5), que engrana con el piñón (3) del satélite dobley con el pifión(4) solidario al segundo eje de salida.  - (Fig. 6): Another satellite consisting of a single pinion (5), which meshes with the pinion (3) of the double satellite and with the pinion (4) integral to the second output shaft.
Para conseguir el mismo par en los ejes de salida, se cumple que la relación Z 1 / Z2sea igual a la relación Z3 / Z4.  To achieve the same torque on the output shafts, it is true that the Z 1 / Z2 ratio is equal to the Z3 / Z4 ratio.
Los rodamientos (14) o superficies de fricción del porta-satélites(8) pueden apoyar exclusivamente sobre los ejes de salida del diferencial, (Fig.4) en este caso dichos ejes(6) y (9) apoyaran sobre la bancada mediante rodamientos(16). La otra posibilidad (Fig.3)consiste en apoyarel porta satélites en la bancada utilizando rodamientos(17), los ejes de salida del diferencial utilizaran rodamientos o superficies de fricción apoyados sobre el porta satélites.  The bearings (14) or friction surfaces of the satellite carrier (8) can rest exclusively on the differential output shafts, (Fig. 4) in this case said shafts (6) and (9) will rest on the bed by means of bearings (16). The other possibility (Fig. 3) consists of supporting the satellite carrier on the bench using bearings (17), the differential output shafts will use bearings or friction surfaces resting on the satellite carrier.
Funcionamiento: Functioning:
El movimiento puede llegar al porta satélites mediante piñones cónicos, piñones hipoides (Fig. 4) (23), piñones rectos o mediante una corona de dientes interiores y piñón, pudiendo ser, estos engranajes, de dientes con dentadura recta o (Fig. 3) helicoidal (21). The movement can reach the satellite carrier by means of conical pinions, hypoid pinions (Fig. 4) (23), straight pinions or by means of a crown of inner teeth and pinion, these gears can be, of teeth with straight teeth or (Fig. 3 ) helical (21).
Al ser Z3 y Z4 menores que Zl y Z2 respectivamente, y al compartir los mismos ejes geométricos, no llegan a establecer contacto, por lo queno engranan entre sí(Fig.6) (18),pero están conectados entre sícon el piñón (5) que restablece la dirección de giro. El número de dientes de dicho piñón es indiferente. BREVE DESCRIPCIÓN DE LOS DIBUJOS As Z3 and Z4 are smaller than Zl and Z2 respectively, and when sharing the same geometric axes, they do not reach contact, so they do not engage each other (Fig. 6) (18), but are connected to each other with the pinion (5 ) which resets the direction of rotation. The number of teeth of said pinion is indifferent. BRIEF DESCRIPTION OF THE DRAWINGS
En las Fig.(l) están representados: In Fig. (L) are represented:
Los dos ejes de salida del diferencial(6) y(9) que se conectaran a los palieres del vehículo.  The two output axles of the differential (6) and (9) that will be connected to the bearings of the vehicle.
La prolongación de uno de los eje(l 1) y la cavidad (12) del otro.  The extension of one of the axes (l 1) and the cavity (12) of the other.
En la Fig.(2) están representados: In Fig. (2) are represented:
Parte del porta-satélites(8) que conduce los ejes (10) y (7)  Part of the satellite carrier (8) that drives the shafts (10) and (7)
Un grupo completo de satélites.  A complete group of satellites.
Los piñones (2) y (4) solidarios a los ejes de salida .  The pinions (2) and (4) integral to the output shafts.
Un cojinete(14) que apoya la parte izquierda del porta-satélites (no dibujada) con uno de los ejes de salida.  A bearing (14) that supports the left side of the satellite carrier (not drawn) with one of the output shafts.
LaFig. (3) representa el diferencial completo sin su bancada con una corona exterior de dientes helicoidales (21). El apoyo del diferencial respecto a su bancada se hace a través del porta-satélites mediante el rodamiento(17).  LaFig. (3) represents the complete differential without its bench with an outer crown of helical teeth (21). The differential support with respect to its bench is made through the satellite carrier by means of the bearing (17).
La Fig. (4) representa el diferencial completo sin su bancada con un engranaje hipoide. El apoyo del diferencial respecto a su bancada se hace a través de los ejes de salida mediante el rodamiento (16).E1 eje(22) del piñónhipoide ( 23) que va hacia el motor esta seccionado, la otra prolongación sirve para apoyar en la bancada mediante el rodamiento (24)  Fig. (4) represents the complete differential without its bed with a hypoid gear. The differential support with respect to its bench is made through the output shafts by means of the bearing (16) .E1 axis (22) of the hypoid pinion (23) that goes to the motor is sectioned, the other extension serves to support the bearing base (24)
La Fig. (5) representa el diferencial expansionado. Solo se ha representado un grupo de satélites.  Fig. (5) represents the expanded differential. Only one group of satellites has been represented.
La Fig. (6) representa, ampliada, el engrane deun grupo de satélites con los piñones solidarios a los ejes de salida. DESCRIPCIÓN DE LA REALIZACIÓN REFERIDA Fig. (6) represents, enlarged, the gearing of a group of satellites with the pinions integral to the output shafts. DESCRIPTION OF THE REFERRED EMBODIMENT
La (Fig.5) representa un diferencial en el que el movimiento llega al porta-satélites mediante un sistema de engranajes hipoide. El porta-satélitesproduce unas trayectorias circulares a los ejes de los satélites. En esta realización se ha optado por la utilización de tres grupos de satélites. Solo se ha representado uno. El grupo está formado por un satélite compuesto por dos pifiones sin movimiento relativo, de diferente número de dientes Zl y Z3. El mayor, de Zl dientes, engrana directamente con el piñón Z2 solidario al primer eje de salida. El menor, de Z3dientes,comunica el movimiento al pifión Z4, solidario al segundo eje de salida, mediante un pifión intermedio (5). Se cumple la relación Z1/Z2 = Z3/ Z4. (Fig. 5) represents a differential in which the movement reaches the satellite carrier by means of a hypoid gear system. The satellite carrier produces circular paths to the axes of the satellites. In this embodiment, the use of three groups of satellites has been chosen. Only one has been represented. The group is formed by a satellite composed of two pifions without relative movement, of different number of teeth Zl and Z3. The largest, of Zl teeth, meshes directly with the Z2 pinion integral to the first output shaft. The minor, of Z3 teeth, communicates the movement to the pipion Z4, integral to the second output axis, by means of an intermediate pipion (5). The relation Z1 / Z2 = Z3 / Z4 is fulfilled.
Con el fin de reducir el ancho del conjunto y eliminar la necesidad de utilizar dos zonas de rodamientos en cada eje de salida se recurre a utilizar una prolongación de uno de los ejes de salida que se acopla mediante dos rodamientos separados en la cavidad del otro eje.  In order to reduce the width of the assembly and eliminate the need to use two bearing zones on each output shaft, an extension of one of the output shafts that is coupled by two separate bearings in the cavity of the other shaft is used .

Claims

REIVINDICACIONES
1) Diferencial compacto de piñones con dientes rectos o helicoidales que proporciona pares iguales en los ejes de salida,caracterizado por utilizar una combinación de elementos mecánicos constituidos por: 1) Compact differential of pinions with straight or helical teeth that provides equal pairs in the output shafts, characterized by using a combination of mechanical elements consisting of:
- un porta-satélites(Fig.5), (8) que produce trayectorias circulares a los ejes (10) y (7) de sus satélites, estando dichos satélites agrupados en conjuntos formados por tres piñones y estos ejes.  - a satellite carrier (Fig. 5), (8) that produces circular paths to the axes (10) and (7) of its satellites, said satellites being grouped into sets formed by three pinions and these axes.
- al menos un conjunto de satélitesque se compone de dos piñones (1) y (3) solidarios entre sí, siendo Zl el numero de dientes del primero, mayor que Z3, numero de dientes del segundo, y girando los dos sobre un primer eje (7), y se completa con otro satélite, con numero de dientes Z5, (5) que gira sobre un segundo eje (10) y que engrana con el pifión de numero de dientes Z3, (3)  - at least one set of satellites consisting of two pinions (1) and (3) integral with each other, Zl being the number of teeth of the first, greater than Z3, number of teeth of the second, and turning the two on a first axis (7), and is completed with another satellite, with number of teeth Z5, (5) that rotates on a second axis (10) and that meshes with the number of teeth number Z3, (3)
- un primer eje de salidadel movimiento(ó), coaxial con el eje de giro del porta-satélites,que consta de un piñón (2), solidario a él, con numero de dientes Z2, y que engrana con el satélite (1) de numero de dientes Zl.  - a first output shaft of the movement (or), coaxial with the axis of rotation of the satellite carrier, consisting of a pinion (2), integral with it, with number of teeth Z2, and which meshes with the satellite (1) of number of teeth Zl.
- un segundo eje de salidadel movimiento(9), coaxial con el eje de giro del porta-satélites,que consta de un piñón (4), solidarioa él, con numero de dientes Z4, en el mismo plano que el satélite (3) de numero de dientes Z3, sin establecer contacto con él, y que engrana con el satélite (5) con numero de dientes Z5, cumpliéndose que  - a second output shaft of the movement (9), coaxial with the axis of rotation of the satellite carrier, consisting of a pinion (4), integral with it, with number of teeth Z4, in the same plane as the satellite (3) of number of teeth Z3, without establishing contact with it, and that meshes with the satellite (5) with number of teeth Z5, fulfilling that
Zl / Z2 = Z3 / Z4  Zl / Z2 = Z3 / Z4
- rodamientos y superficies de fricción dispuestas de forma que soporten los momentos axiales y Héctores de los diversos elementos.  - bearings and friction surfaces arranged so as to withstand the axial and Hector moments of the various elements.
2) Diferencial compacto de piñones con dientes rectos o helicoidales que proporciona pares iguales en los ejes de salidaxaracte rizado por presentar en uno de los ejes de salida del diferencial un saliente (Figl), (11) que penetra en una cavidad (12) del otro eje, apoyándose, (Fig.6), al menos,en las coronas del principio (15) y el final (14) del saliente y cavidad.  2) Compact differential of pinions with straight or helical teeth that provides equal pairs in the axes of axially curved output by presenting in one of the output axes of the differential a projection (Figl), (11) that penetrates into a cavity (12) of the another axis, supported, (Fig. 6), at least, on the crowns of the beginning (15) and the end (14) of the projection and cavity.
3) Diferencial compacto de piñones con dientes rectos o helicoidales que proporciona pares iguales en los ejes de salida, caracterizado por utilizar un eje (Fig4) que traspasa con una prolongación (22)el piñón hipoide, que engrana con la corona exterior, estando unida, dichaprolongación, a la bancada, mediante un rodamiento, o cojinete (24).  3) Compact differential of pinions with straight or helical teeth that provides equal pairs in the output shafts, characterized by using an axle (Fig4) that passes the hypoid pinion, which engages with the outer crown, being connected with an extension (22). , said extension, to the bed, by means of a bearing, or bearing (24).
PCT/ES2013/000221 2012-10-26 2013-10-07 Compact differential WO2014064303A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3181950A1 (en) * 2015-12-16 2017-06-21 Atieva, Inc. Parallel axis epicyclic gear differential

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142575A (en) * 1936-09-29 1939-01-03 Gen Motors Corp Differential gearing
DE811650C (en) * 1948-12-28 1951-08-23 Arthur Gaunitz Spur gear differential gear for motor vehicles
FR1269716A (en) * 1960-07-05 1961-08-18 Boites De Vitesses Ind Differential mechanism device
GB888263A (en) * 1959-08-20 1962-01-31 Ford Motor Co Improvements in or relating to vehicle differentials
DE102004015278A1 (en) * 2004-03-29 2005-10-20 Josef Gail Differential transmission for go-kart has each spur gear path with at least one central spur gear and at least one radially offset spur gear
FR2944081A1 (en) * 2009-04-03 2010-10-08 Roger Laumain Self-locking cylindrical axial gear differential for use in motor vehicles, has planet gear engaging with sun gear with speed ratio of output shafts that depend on number of teeth of gears rotating in bores realized on friction ring

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142575A (en) * 1936-09-29 1939-01-03 Gen Motors Corp Differential gearing
DE811650C (en) * 1948-12-28 1951-08-23 Arthur Gaunitz Spur gear differential gear for motor vehicles
GB888263A (en) * 1959-08-20 1962-01-31 Ford Motor Co Improvements in or relating to vehicle differentials
FR1269716A (en) * 1960-07-05 1961-08-18 Boites De Vitesses Ind Differential mechanism device
DE102004015278A1 (en) * 2004-03-29 2005-10-20 Josef Gail Differential transmission for go-kart has each spur gear path with at least one central spur gear and at least one radially offset spur gear
FR2944081A1 (en) * 2009-04-03 2010-10-08 Roger Laumain Self-locking cylindrical axial gear differential for use in motor vehicles, has planet gear engaging with sun gear with speed ratio of output shafts that depend on number of teeth of gears rotating in bores realized on friction ring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3181950A1 (en) * 2015-12-16 2017-06-21 Atieva, Inc. Parallel axis epicyclic gear differential

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