WO2011148007A1 - Vibration attenuator for motor vehicles - Google Patents

Vibration attenuator for motor vehicles Download PDF

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Publication number
WO2011148007A1
WO2011148007A1 PCT/ES2010/070740 ES2010070740W WO2011148007A1 WO 2011148007 A1 WO2011148007 A1 WO 2011148007A1 ES 2010070740 W ES2010070740 W ES 2010070740W WO 2011148007 A1 WO2011148007 A1 WO 2011148007A1
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WO
WIPO (PCT)
Prior art keywords
rubber body
section
sectors
damper
different
Prior art date
Application number
PCT/ES2010/070740
Other languages
Spanish (es)
French (fr)
Inventor
Alfredo Sanz Ortega
Original Assignee
Arteca Caucho Metal, S.A.
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 Arteca Caucho Metal, S.A. filed Critical Arteca Caucho Metal, S.A.
Publication of WO2011148007A1 publication Critical patent/WO2011148007A1/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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/1414—Masses driven by elastic elements
    • F16F15/1435—Elastomeric springs, i.e. made of plastic or rubber
    • F16F15/1442—Elastomeric springs, i.e. made of plastic or rubber with a single mass

Definitions

  • the present invention relates to a device that attenuates the vibrations that occur in the transmission shaft of a vehicle, vibrations generated by the engine of the vehicle and that are transmitted to the wheels through the gearbox and transmission.
  • the object of the invention is to achieve a device capable of attenuating vibrations of different frequencies in the transmission shaft of the vehicle.
  • Motor vehicles have a construction in which the force of the engine is transmitted through the gearbox and the transmission to the wheels.
  • the vibrations generated by the engine vibrations due to torque change and vibrations from other sources, are propagated through the transmission shaft, which can enter into resonance.
  • vibration frequency of the drive shaft is within the range of engine vibrations, amplification of these vibrations may cause vibrations of annoying sounds for the occupants of the vehicle.
  • attenuators are used which, tuned by the transmission shaft at the correct frequency, unfold the resonance peak in two peaks of lower intensity, thus eliminating, or at least attenuating, the perception of vibration or noise by part of the vehicle user.
  • vibrations and / or noises coexist that can be noticed inside the vehicle at more than one frequency, so that traditional attenuating devices do not completely solve the problem.
  • dampers are materialized in a rubber tubular sleeve or body, provided with inner teeth for attaching the damper itself to the drive shaft, and said rubber piece incorporates a metal ring, so that the combination of These two elements determine the attenuation.
  • dampers in which the rubber body is extended by one of the ends in a neck provided for the coupling thereon of a clamp, which improves the mechanical fixation of the damper on the transmission shaft.
  • the damper or vibration attenuator device that the invention
  • the proposed solution resolves the aforementioned problem fully satisfactorily, so that it is capable of damping vibrations at various frequencies, such as the double mass dampers mentioned above, but with a considerably simpler structure and consequently more economical.
  • the damper that is recommended based on the basic structuring of a conventional simple type damper, such as those mentioned above, that is, those constituted by a rubber body in which a metal part is integrated , rubber body with internal ribs for fixing to the shaft or transmission shaft, and optionally with a neck for additional fixation with the contest of a clamp, focuses its characteristics on the fact of presenting a geometry of discontinuous section, so that the section of the metal and / or the rubber section vary along the contour of the bushing configured by the damper as a whole.
  • the section of the metal When the section of the metal is variable, it must also be the section of the rubber, for an intimate adaptation between both elements, while when the section of the metal is constant, the variations of section at the level of the rubber can be carried out by different diameters for its inner nerves, different thicknesses thereof, and both in one and another case with inner teeth, facing the metal part, or with axially offset outer teeth with respect to said metal part.
  • the said section discontinuity is such that in the damper as a whole different sections are defined, which create the different resonance frequencies, determining four quadrants, two of them with a certain geometry, alternated with the other two, of geometry different.
  • Figure 1 Shows an axial view, a diametral section and a cross section of a vibration attenuation device for a motor vehicle made in accordance with the present invention, according to a practical embodiment in which section discontinuity is obtained simultaneously in the rubber body and in the metal part inserted in it.
  • Figure 2 shows a representation similar to Figure 1, but in which the discontinuity of section is obtained by using teeth of different diameters in the rubber body.
  • Figure 3. Shows, according to a representation similar to that of the two previous figures, a variant embodiment of the device in which the discontinuity of section is achieved by teeth of different widths.
  • Figures 4, 5 and 6. They show similar solutions respectively to those of Figures 1, 2 and 3, but according to variants of embodiment in which the damper also incorporates a neck for the corresponding fixing clamp.
  • Figures 7 and 8. They show dampers respectively similar to those of figures 5 and 6, but with the proviso that in this case the teeth are displaced outwards with respect to the metal part and in opposition to the neck of clamp coupling.
  • Figure 9. In turn shows the four views of a damper similar to those of Figures 7 and 8, but with the exception that in this case instead of the teeth the damper incorporates a continuous collar that allows to increase the force fixing the damper to the shaft.
  • Figures 10 and 1 1 In this case instead of the teeth the damper incorporates a continuous collar that allows to increase the force fixing the damper to the shaft.
  • the common denominator of the different practical embodiments of the damper that is recommended, it consists in the participation of a rubber body (1), as a cap, in which a metal part (2), also annular, defining a wide central hole (3) in which the axle belonging to the transmission shaft of the vehicle is attachable.
  • the damper section is discontinuous or variable, as will be detailed below.
  • a damper has been shown in which the metal part (2) has a different thickness along its perimeter, with two sectors (4) of greater thickness, arranged alternately with two other sectors ( 4 ') of considerably narrower section, and all of them of the same angular amplitude, corresponding to a quarter of a circle.
  • This difference in thickness is extended in the opposite direction to the rubber body (1), from whose inner surface the teeth (5) emerge radially and internally through which the damper as a whole is fixed to the shaft, equiangularly distributed teeth and with the same diameter and width.
  • the metal part (2) has a constant width, in the same way that the width of the rubber body (1 is also constant) ) in what refers to the sector of the same delimited between its internal face and its external face, achieving here the discontinuity of section through different diameters for its nerves or teeth (5), so that there are two groups of teeth (5) of larger diameter, alternated with two other groups of teeth (5 ') of smaller diameter, affecting these groups of nerves (5, 5') to quadrants of the damper as a whole.
  • these teeth (5, 5 ') of different widths all have the same radial or diametral dimension.
  • Figure 6 shows an embodiment of the damper basically coinciding with that of Figure 3, but provided with a neck (6) axial extension of the body (1), as in the cases of Figures 4 and 5.
  • the embodiment of Figure 7 is equivalent to that of Figure 6, with the sole exception that the teeth (5, 5 ') are located at the end of the rubber body (1) opposite its neck (6), specifically outside the area facing the metal part (2), these teeth being of different diameter in the case of figure 7 and of different width in the case of figure 8.
  • half of the damper attenuates the vibrations of a certain frequency, while the other half attenuates those of a different frequency.

Abstract

Designed in particular to attenuate vibration of different frequencies in the driveshaft of the vehicle, the device of the invention comprises a rubber body (1), in the form of a bushing, in which is inserted an annular metal part (2). Said rubber body (1) has internal ribs (5) for fitting it to the shaft of the driveshaft, and may optionally be extended by an axial neck (6) for the coupling of a bracket to facilitate fitting to said shaft. The invention is based on the fact that the bushing made up of the combination of the rubber body (1) and the metal part (2) has a cross-section that is discontinuous around the perimeter thereof, defining therein four sectors of equal angular width, alternate sectors having the same cross-section, which define different cross-sections that create the different resonance frequencies.

Description

DISPOSITIVO ATENUADOR DE VIBRACIONES EN UN VEHÍCULO DE  VIBRATION ATTENTION DEVICE IN A VEHICLE OF
MOTOR  ENGINE
D E S C R I P C I Ó N D E S C R I P C I Ó N
OBJETO DE LA INVENCIÓN OBJECT OF THE INVENTION
La presente invención se refiere a un dispositivo atenuador de las vibraciones que se producen en el árbol de transmisión de un vehículo, vibraciones generadas por el motor del mismo y que se transmiten a las ruedas a través de la caja de cambios y de la transmisión. The present invention relates to a device that attenuates the vibrations that occur in the transmission shaft of a vehicle, vibrations generated by the engine of the vehicle and that are transmitted to the wheels through the gearbox and transmission.
El objeto de la invención es conseguir un dispositivo capaz de atenuar vibraciones de diferentes frecuencias en el árbol de transmisión del vehículo. The object of the invention is to achieve a device capable of attenuating vibrations of different frequencies in the transmission shaft of the vehicle.
La invención se sitúa pues en el ámbito de la industria del automóvil. The invention thus falls within the scope of the automobile industry.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Los vehículos a motor presentan una construcción en la cual la fuerza del motor se transmite a través de la caja de cambios y la transmisión a las ruedas. En algunos diseños las vibraciones generadas por el motor, vibraciones debidas a cambio de par y vibraciones de otros orígenes, se propagan a través del árbol de transmisión, pudiendo éste entrar en resonancia. Motor vehicles have a construction in which the force of the engine is transmitted through the gearbox and the transmission to the wheels. In some designs the vibrations generated by the engine, vibrations due to torque change and vibrations from other sources, are propagated through the transmission shaft, which can enter into resonance.
Si la frecuencia de vibraciones del árbol de transmisión se encuentra dentro del rango de vibraciones del motor, la amplificación de estas vibraciones puede originar vibraciones de sonidos molestos para los ocupantes del vehículo. Para evitar o atenuar estas vibraciones, se utilizan atenuadores que, sintonizados por el árbol de transmisión a la frecuencia correcta, desdoblan el pico de resonancia en dos picos de menor intensidad, eliminándose así, o al menos atenuándose, la percepción de vibración o ruido por parte del usuario del vehículo. If the vibration frequency of the drive shaft is within the range of engine vibrations, amplification of these vibrations may cause vibrations of annoying sounds for the occupants of the vehicle. To avoid or attenuate these vibrations, attenuators are used which, tuned by the transmission shaft at the correct frequency, unfold the resonance peak in two peaks of lower intensity, thus eliminating, or at least attenuating, the perception of vibration or noise by part of the vehicle user.
En algunos casos coexisten vibraciones y/o ruidos que pueden ser notados en el interior del vehículo a mas de una frecuencia, por lo que los dispositivos atenuadores tradicionales no solucionan completamente el problema. In some cases, vibrations and / or noises coexist that can be noticed inside the vehicle at more than one frequency, so that traditional attenuating devices do not completely solve the problem.
Estos atenuadores, comúnmente denominados "dampers" se materializan en un casquillo o cuerpo tubular de caucho, provisto de dientes interiores para la fijación del propio damper al eje de transmisión, y dicha pieza de caucho incorpora un anillo metálico, de manera que la combinación de estos dos elementos es la que determina la atenuación. Existen también dampers en los que el cuerpo de caucho se prolonga por uno de los extremos en un cuello previsto para el acoplamiento sobre el mismo de una abrazadera, que mejora la fijación mecánica del damper sobre el eje de transmisión. These dimmers, commonly referred to as "dampers" are materialized in a rubber tubular sleeve or body, provided with inner teeth for attaching the damper itself to the drive shaft, and said rubber piece incorporates a metal ring, so that the combination of These two elements determine the attenuation. There are also dampers in which the rubber body is extended by one of the ends in a neck provided for the coupling thereon of a clamp, which improves the mechanical fixation of the damper on the transmission shaft.
Este tipo de dampers están previstos para atenuar una determinada frecuencia de vibración, pero son insuficientes cuando, como sucede con relativa frecuencia, confluyen en el mismo vibraciones a mas frecuencias. En estos casos se procede al montaje de dos dampers distintos, con la negativa repercusión que ello trae a nivel de costos. This type of dampers are intended to attenuate a certain vibration frequency, but they are insufficient when, as happens with relative frequency, they converge on the same vibrations at more frequencies. In these cases, two different dampers are assembled, with the negative impact that this brings at the cost level.
Si bien existen también dampers de doble masa, una para cada frecuencia, estos dampers resultan considerablemente mas caros que los anteriormente citados. Although there are also double mass dampers, one for each frequency, these dampers are considerably more expensive than those mentioned above.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
El damper o dispositivo atenuador de vibraciones que la invención propone resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta, de manera que es capaz de amortiguar vibraciones a varias frecuencias, como los dampers de doble masa anteriormente citados, pero con una estructura considerablemente mas simple y consecuentemente mas económica. The damper or vibration attenuator device that the invention The proposed solution resolves the aforementioned problem fully satisfactorily, so that it is capable of damping vibrations at various frequencies, such as the double mass dampers mentioned above, but with a considerably simpler structure and consequently more economical.
Para ello y de forma mas concreta, el damper que se preconiza, partiendo de la estructuración básica de un damper convencional de tipo simple, como los anteriormente citados, es decir de los constituidos mediante un cuerpo de caucho en el que queda integrada una pieza metálica, cuerpo de caucho con nervios interiores de fijación al árbol o eje de transmisión, y opcionalmente con un cuello para fijación complementaria con el concurso de una abrazadera, centra sus características en el hecho de presentar una geometría de sección discontinua, de manera que la sección del metal y/o la sección del caucho varían a lo largo del contorno del casquillo configurado por el damper en su conjunto. To do this and more specifically, the damper that is recommended, based on the basic structuring of a conventional simple type damper, such as those mentioned above, that is, those constituted by a rubber body in which a metal part is integrated , rubber body with internal ribs for fixing to the shaft or transmission shaft, and optionally with a neck for additional fixation with the contest of a clamp, focuses its characteristics on the fact of presenting a geometry of discontinuous section, so that the section of the metal and / or the rubber section vary along the contour of the bushing configured by the damper as a whole.
Cuando la sección del metal es variable, ha de serlo también la sección del caucho, para una intima adaptación entre ambos elementos, mientras que cuando la sección del metal es constante, las variaciones de sección a nivel del caucho pueden llevarse a cabo mediante diferentes diámetros para sus nervios interiores, diferentes espesores de los mismos, y tanto en uno como en otro caso con dientes interiores, enfrentados a la pieza metálica, o con dientes exteriores desfasados axialmente con respecto a dicha pieza metálica. When the section of the metal is variable, it must also be the section of the rubber, for an intimate adaptation between both elements, while when the section of the metal is constant, the variations of section at the level of the rubber can be carried out by different diameters for its inner nerves, different thicknesses thereof, and both in one and another case with inner teeth, facing the metal part, or with axially offset outer teeth with respect to said metal part.
En cualquier caso la citada discontinuidad de sección es tal que en el damper en su conjunto se definen diferentes secciones, que crean las diferentes frecuencias de resonancia, determinando cuatro cuadrantes, dos de ellos con una determinada geometría, alternados con los otros dos, de geometría diferente. In any case, the said section discontinuity is such that in the damper as a whole different sections are defined, which create the different resonance frequencies, determining four quadrants, two of them with a certain geometry, alternated with the other two, of geometry different.
DESCRIPCIÓN DE LOS DIBUJOS DESCRIPTION OF THE DRAWINGS
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: To complement the description that is being made and with In order to help a better understanding of the features of the invention, in accordance with a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description, where it is shown in an illustrative and non-limiting manner. the next:
La figura 1 .- Muestra una vista axial, una sección diametral y una sección transversal de un dispositivo atenuador de vibraciones para un vehículo de motor realizado de acuerdo con la presente invención, según una realización práctica en la que la discontinuidad de sección se obtiene simultáneamente en el cuerpo de caucho y en la pieza metálica inserta en el mismo. Figure 1 .- Shows an axial view, a diametral section and a cross section of a vibration attenuation device for a motor vehicle made in accordance with the present invention, according to a practical embodiment in which section discontinuity is obtained simultaneously in the rubber body and in the metal part inserted in it.
La figura 2.- Muestra una representación similar a la figura 1 , pero en la que la discontinuidad de sección se obtiene mediante la utilización de dientes de diferentes diámetros en el cuerpo de caucho. Figure 2 shows a representation similar to Figure 1, but in which the discontinuity of section is obtained by using teeth of different diameters in the rubber body.
La figura 3.- Muestra, según una representación similar a la de las dos figuras anteriores, una variante de realización del dispositivo en la que la discontinuidad de sección se consigue mediante dientes de anchuras diferentes. Figure 3.- Shows, according to a representation similar to that of the two previous figures, a variant embodiment of the device in which the discontinuity of section is achieved by teeth of different widths.
Las figuras 4, 5 y 6.- Muestran soluciones similares respectivamente a las de las figuras 1 , 2 y 3, pero según variantes de realización en las que el damper incorpora además un cuello para la correspondiente abrazadera de fijación. Figures 4, 5 and 6. - They show similar solutions respectively to those of Figures 1, 2 and 3, but according to variants of embodiment in which the damper also incorporates a neck for the corresponding fixing clamp.
Las figuras 7 y 8.- Muestran a su vez dampers respectivamente semejantes a los de las figuras 5 y 6, pero con la salvedad de que en este caso los dientes quedan desplazados hacia fuera con respecto a la pieza metálica y en oposición al cuello de acoplamiento de la abrazadera. Figures 7 and 8.- They show dampers respectively similar to those of figures 5 and 6, but with the proviso that in this case the teeth are displaced outwards with respect to the metal part and in opposition to the neck of clamp coupling.
La figura 9.- Muestra a su vez las cuatro vistas de un damper semejante a los de las figuras 7 y 8, pero con la salvedad de que en este caso en lugar de los dientes el damper incorpora un collarín continuo que permite aumentar la fuerza de fijación del damper al eje. Las figuras 10 y 1 1 .- Muestran, finalmente, una vista axial y una sección diametral de otra variante de realización del damper REALIZACIÓN PREFERENTE DE LA INVENCIÓN Figure 9.- In turn shows the four views of a damper similar to those of Figures 7 and 8, but with the exception that in this case instead of the teeth the damper incorporates a continuous collar that allows to increase the force fixing the damper to the shaft. Figures 10 and 1 1 .- Finally show an axial view and a diametral section of another variant of the damper embodiment PREFERRED EMBODIMENT OF THE INVENTION
A la vista de las figuras reseñadas puede observarse como el denominador común a las diferentes realizaciones prácticas del damper que se preconiza, consiste en que en el mismo participa un cuerpo (1 ) de caucho, a modo de casquillo, en cuyo seno queda embebida una pieza metálica (2), también anular, definiendo un amplio orificio central (3) en el que resulta acoplable el eje perteneciente al árbol de transmisión del vehículo. De acuerdo ya con la invención y también constituyendo una característica común a los diferentes ejemplos de realización práctica, la sección del damper es discontinua o variable, como se va a detallar seguidamente. In view of the figures outlined, it can be seen as the common denominator of the different practical embodiments of the damper that is recommended, it consists in the participation of a rubber body (1), as a cap, in which a metal part (2), also annular, defining a wide central hole (3) in which the axle belonging to the transmission shaft of the vehicle is attachable. In accordance with the invention and also constituting a characteristic common to the different examples of practical embodiment, the damper section is discontinuous or variable, as will be detailed below.
Haciendo referencia a la figura 1 , en ella se ha representado un damper en el que la pieza metálica (2) presenta diferente espesor a los largo de su perímetro, con dos sectores (4) de mayor grosor, dispuestos alternadamente con otros dos sectores (4') de sección considerablemente mas estrecha, y todos ellos de la misma amplitud angular, correspondiente a un cuarto de circunferencia. Esa diferencia de espesor se hacen extensivas en sentido contrario al cuerpo de goma (1 ), de cuya superficie interna emergen radial e interiormente los dientes (5) a través de los que el damper en su conjunto se fija al eje, dientes equiangularmente distribuidos y con el mismo diámetro y anchura. Referring to Figure 1, a damper has been shown in which the metal part (2) has a different thickness along its perimeter, with two sectors (4) of greater thickness, arranged alternately with two other sectors ( 4 ') of considerably narrower section, and all of them of the same angular amplitude, corresponding to a quarter of a circle. This difference in thickness is extended in the opposite direction to the rubber body (1), from whose inner surface the teeth (5) emerge radially and internally through which the damper as a whole is fixed to the shaft, equiangularly distributed teeth and with the same diameter and width.
La estructuración descrita se repite esencialmente en el ejemplo de realización práctica de la figura 4, donde el damper incorpora además un cuello (6) prolongación axial de uno de sus extremos y destinado a recibir a una abrazadera, no representada, de apriete del damper contra el eje de transmisión. Tomando ahora en consideración la realización de la figura 2, en ella y como se observa preferentemente en su sección transversal, la pieza metálica (2) presenta una anchura constante, de la misma manera que también es constante la anchura del cuerpo de caucho (1 ) en lo que se refiere al sector del mismo delimitado entre su cara interna y su cara externa, consiguiéndose aquí la discontinuidad de sección mediante diferentes diámetros para sus nervios o dientes (5), de manera que existen dos agrupaciones de dientes (5) de mayor diámetro, alternados con otras dos agrupaciones de dientes (5') de menor diámetro, afectando estas agrupaciones de nervios (5, 5') a cuadrantes del damper en su conjunto. The structuring described is essentially repeated in the example of practical embodiment of Figure 4, where the damper also incorporates an axial extension neck (6) of one of its ends and intended to receive a clamp, not shown, of tightening of the damper against The drive shaft. Taking now into consideration the embodiment of Figure 2, therein and as preferably seen in its cross section, the metal part (2) has a constant width, in the same way that the width of the rubber body (1 is also constant) ) in what refers to the sector of the same delimited between its internal face and its external face, achieving here the discontinuity of section through different diameters for its nerves or teeth (5), so that there are two groups of teeth (5) of larger diameter, alternated with two other groups of teeth (5 ') of smaller diameter, affecting these groups of nerves (5, 5') to quadrants of the damper as a whole.
Como en el caso de la figura 1 , en la figura 5 se ha representado un damper que mantiene las características estructurales del de la figura 2 que acaba de describirse, pero con la salvedad de que incorpora un cuello axial (6) con la misma finalidad anteriormente expuesta. As in the case of figure 1, in figure 5 a damper has been represented that maintains the structural characteristics of that of figure 2 just described, but with the proviso that it incorporates an axial neck (6) with the same purpose previously exposed.
Pasando ahora al damper que muestra la figura 3, éste reproduce fundamentalmente la estructura del damper de la figura 2, pero con la salvedad de que la discontinuidad en la sección del mismo viene determinada no por diferente cota diametral de los nervios (5, 5'), como en el caso de la citada figura 2, sino por diferencias en su anchura, existiendo cuatro agrupaciones de dientes, dos de ellos en la que los dientes (5) son mas anchos, y otras dos en la que los dientes (5') son mas estrechos, agrupaciones que se disponen alternadamente y afectando cada una de ellas a un cuadrante de circunferencia. Turning now to the damper shown in Figure 3, it essentially reproduces the structure of the damper in Figure 2, but with the proviso that the discontinuity in the section thereof is determined not by different diametral dimension of the nerves (5, 5 ' ), as in the case of the aforementioned figure 2, but by differences in its width, there are four groups of teeth, two of them in which the teeth (5) are wider, and two in which the teeth (5 ') are narrower, clusters that are arranged alternately and affecting each of them to a circle of circumference.
Como también se observa en la figura 3, estos dientes (5, 5') de diferente anchura presentan todos ellos la misma cota radial o diametral. As can also be seen in figure 3, these teeth (5, 5 ') of different widths all have the same radial or diametral dimension.
En la figura 6 se ha representado una realización del damper básicamente coincidente con la de la figura 3, pero provisto de un cuello (6) prolongación axial del cuerpo (1 ), como en los casos de las figuras 4 y 5. La realización de la figura 7 es equivalente a la de la figura 6, con la única salvedad de que los dientes (5, 5') se sitúan en el extremo del cuerpo de caucho (1 ) opuesto a su cuello (6), concretamente por fuera de la zona de enfrentamiento a la pieza metálica (2), siendo estos dientes de diferente diámetro en el caso de la figura 7 y de diferente anchura en el caso de la figura 8. Figure 6 shows an embodiment of the damper basically coinciding with that of Figure 3, but provided with a neck (6) axial extension of the body (1), as in the cases of Figures 4 and 5. The embodiment of Figure 7 is equivalent to that of Figure 6, with the sole exception that the teeth (5, 5 ') are located at the end of the rubber body (1) opposite its neck (6), specifically outside the area facing the metal part (2), these teeth being of different diameter in the case of figure 7 and of different width in the case of figure 8.
En la realización de la figura 9 se ha representado un ejemplo de dampers semejantes a los de las figuras 7 y 8, con la única salvedad en el presente caso de que en lugar de los dientes (5-5') se ha previsto que el damper incorpore un collarín continuo (6) que permite aumentar la fuerza de fijación del damper al eje. In the embodiment of figure 9 an example of dampers similar to those of figures 7 and 8 has been represented, with the only caveat in the present case that instead of the teeth (5-5 ') it is provided that the Damper incorporates a continuous collar (6) that increases the clamping force of the damper to the shaft.
Finalmente, en las figuras 10 y 1 1 se observa como puede conseguirse el mismo efecto determinando en el cuerpo (1 ) de caucho dos sectores coaxiales (7 y 8), el primero envolvente del segundo y relacionados entre sí mediante medios (9, 9') de diferente espesor, que crean diferentes frecuencias. Finally, in Figures 10 and 1 1 it is observed how the same effect can be achieved by determining in the body (1) of rubber two coaxial sectors (7 and 8), the first envelope of the second and related to each other by means (9, 9 ') of different thickness, which create different frequencies.
En cualquier caso, la mitad del damper atenúa las vibraciones de una determinada frecuencia, mientras que la otra mitad atenúa las de una frecuencia distinta. In any case, half of the damper attenuates the vibrations of a certain frequency, while the other half attenuates those of a different frequency.

Claims

R E I V I N D I C A C I O N E S R E I V I N D I C A C I O N E S
1 a.- Dispositivo atenuador de vibraciones en un vehículo de motor, de los comúnmente denominados "damper", constituidos mediante un cuerpo de caucho (1 ), a modo de casquillo, en el que queda inserta una pieza metálica anular (2), estando el citado cuerpo de caucho (1 ) dotado de nervios interiores (5) para su acoplamiento al eje del árbol de transmisión, y estando opcionalmente dicho cuerpo de caucho (1 ) prolongado en un cuello axial (6) para acoplamiento de una abrazadera que complementa la fijación al citado eje, caracterizado porque el casquillo constituido por la combinación del cuerpo de caucho (1 ) y la pieza metálica (2) presenta una sección discontinua a lo largo de su perímetro, definiéndose en la misma cuatro sectores de idéntica amplitud angular, de igual sección dos a dos y dispuestas alternadamente. 1 .- vibration attenuating device in a motor vehicle, of the commonly termed "damper", constituted by a rubber body (1), as a cap, in which is inserted a metal annular member (2), said rubber body (1) being provided with inner ribs (5) for coupling to the shaft of the drive shaft, and said rubber body (1) being optionally extended on an axial neck (6) for coupling a clamp that complements the fixation to the aforementioned axis, characterized in that the bushing constituted by the combination of the rubber body (1) and the metal part (2) has a discontinuous section along its perimeter, defining four sectors of identical angular width in the same , of equal section two to two and arranged alternately.
2a.- Dispositivo atenuador de vibraciones en un vehículo de motor, según reivindicación 1 , caracterizado porque la citada discontinuidad en la sección del damper viene determinada por la existencia en la pieza metálica (2) de dos sectores (4) de mayor diámetro alternados con dos sectores (4') de menor diámetro, que se conjugan con otros tantos sectores del cuerpo de caucho (1 ) en los que las variaciones de diámetro son en sentido contrario para los respectivos sectores. 2 .- attenuating device vibrations in a motor vehicle according to claim 1, characterized in that said discontinuity in the section of the damper is determined by the existence in the metal part (2) of two sectors (4) higher alternating diameter with two sectors (4 ') of smaller diameter, which are combined with as many sectors of the rubber body (1) in which the diameter variations are in the opposite direction for the respective sectors.
3a.- Dispositivo atenuador de vibraciones en un vehículo de motor, según reivindicación 1 , caracterizado porque la sección discontinua del mismo viene determinada por la existencia en el cuerpo de caucho de dientes (5, 5') de diferente diámetro. 3 .- vibration attenuating device in a motor vehicle according to claim 1, wherein the discontinuous section thereof is determined by the existence in the tooth rubber body (5, 5 ') of different diameter.
4a.- Dispositivo atenuador de vibraciones en un vehículo de motor, según reivindicación 1 , caracterizado porque la sección discontinua del mismo viene determinada por la existencia en el cuerpo de caucho de dientes (5, 5') de diferente anchura. 4 .- vibration attenuating device in a motor vehicle according to claim 1, wherein the discontinuous section thereof is determined by the existence in the tooth rubber body (5, 5 ') of different width.
PCT/ES2010/070740 2010-05-25 2010-11-18 Vibration attenuator for motor vehicles WO2011148007A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESU201030515 2010-05-25
ES201030515U ES1072574Y (en) 2010-05-25 2010-05-25 VIBRATION ATTENUATOR DEVICE IN A MOTOR VEHICLE

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WO2011148007A1 true WO2011148007A1 (en) 2011-12-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170136314A (en) 2016-06-01 2017-12-11 현대자동차주식회사 Dynamic damper
KR20180064886A (en) 2016-12-06 2018-06-15 현대자동차주식회사 Dual mass dynamic damper
US11137046B2 (en) 2018-01-11 2021-10-05 Steering Solutions Ip Holding Corporation Tuned absorber assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5036726A (en) * 1988-07-22 1991-08-06 Woco Franz-Josef Wolf & Co. Torsional-vibration damper
US5660256A (en) * 1995-09-22 1997-08-26 Gkn Automotive, Inc. Dynamic damper
DE19957774C1 (en) * 1999-12-01 2001-04-12 Draebing Kg Wegu Structure mounting for passive oscillation damping has spring with spaced radial spring arms used for coupling fixing element to oscillation damping mass
JP2004257486A (en) * 2003-02-26 2004-09-16 Toyo Tire & Rubber Co Ltd Method for manufacturing dynamic damper and dynamic damper
JP2005024011A (en) * 2003-07-02 2005-01-27 Toyo Tire & Rubber Co Ltd Dynamic damper
JP2005030466A (en) * 2003-07-10 2005-02-03 Toyo Tire & Rubber Co Ltd Dynamic damper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5036726A (en) * 1988-07-22 1991-08-06 Woco Franz-Josef Wolf & Co. Torsional-vibration damper
US5660256A (en) * 1995-09-22 1997-08-26 Gkn Automotive, Inc. Dynamic damper
DE19957774C1 (en) * 1999-12-01 2001-04-12 Draebing Kg Wegu Structure mounting for passive oscillation damping has spring with spaced radial spring arms used for coupling fixing element to oscillation damping mass
JP2004257486A (en) * 2003-02-26 2004-09-16 Toyo Tire & Rubber Co Ltd Method for manufacturing dynamic damper and dynamic damper
JP2005024011A (en) * 2003-07-02 2005-01-27 Toyo Tire & Rubber Co Ltd Dynamic damper
JP2005030466A (en) * 2003-07-10 2005-02-03 Toyo Tire & Rubber Co Ltd Dynamic damper

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170136314A (en) 2016-06-01 2017-12-11 현대자동차주식회사 Dynamic damper
KR20180064886A (en) 2016-12-06 2018-06-15 현대자동차주식회사 Dual mass dynamic damper
US11137046B2 (en) 2018-01-11 2021-10-05 Steering Solutions Ip Holding Corporation Tuned absorber assembly

Also Published As

Publication number Publication date
ES1072574Y (en) 2010-10-27
ES1072574U (en) 2010-07-30

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