EP2097656A2 - Elastic articulation with a selectively functional, direct force-transmission structure - Google Patents

Elastic articulation with a selectively functional, direct force-transmission structure

Info

Publication number
EP2097656A2
EP2097656A2 EP07870361A EP07870361A EP2097656A2 EP 2097656 A2 EP2097656 A2 EP 2097656A2 EP 07870361 A EP07870361 A EP 07870361A EP 07870361 A EP07870361 A EP 07870361A EP 2097656 A2 EP2097656 A2 EP 2097656A2
Authority
EP
European Patent Office
Prior art keywords
reliefs
outer sleeve
intermediate frame
rigid
elastic
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP07870361A
Other languages
German (de)
French (fr)
Inventor
Christophe Criaud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
Original Assignee
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
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 Michelin Recherche et Technique SA Switzerland, Michelin Recherche et Technique SA France, Societe de Technologie Michelin SAS filed Critical Michelin Recherche et Technique SA Switzerland
Publication of EP2097656A2 publication Critical patent/EP2097656A2/en
Withdrawn legal-status Critical Current

Links

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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • F16F13/1409—Units of the bushing type, i.e. loaded predominantly radially characterised by buffering features or stoppers
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3807—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by adaptations for particular modes of stressing
    • F16F1/3821—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by adaptations for particular modes of stressing characterised by adaptations to counter torsional forces
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3863—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by the rigid sleeves or pin, e.g. of non-circular cross-section
    • 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
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/387—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type comprising means for modifying the rigidity in particular directions

Definitions

  • the invention relates, in general, to vibration control techniques, and in particular to an elastic articulation designed to assemble two parts of a force transmission structure, in particular of a motor vehicle, and to dampen the vibrations. transmitted from one of these rooms to another.
  • the invention relates to an elastic hinge having first and second axial ends spaced apart from one another along a longitudinal axis, and comprising at least, at increasing radial distance from this axis, an internal reinforcement, an intermediate reinforcement and an outer sleeve, this articulation further comprising elastic and / or hydro-elastic damping means interposed on the one hand between the internal reinforcement and the intermediate reinforcement, and on the other hand between this intermediate reinforcement and the outer sleeve, these damping means being designed to oppose a static and / or dynamic resistance force to any relative displacement, perpendicular to the longitudinal axis, of the inner armature relative to the outer sleeve.
  • the damping means consist exclusively of a lining of elastomeric material, the deformations of which generate a force of elastic resistance to radial relative displacement of the inner armature relative to the outer sleeve.
  • the damping means comprise, in addition to an elastomeric lining, chambers filled with a liquid, the circulation of which inside the hinge opposes a force of dynamic resistance to the radial relative displacement of the inner armature relative to the outer sleeve.
  • the invention which is indifferently applicable to one and the other of these two types of joints, is intended to provide a hinge usable under extreme conditions with minimal risk of damage and irreversible damage.
  • the articulation of the invention is essentially characterized in that the intermediate reinforcement has a generally cylindrical shape supplemented by a plurality of reliefs rigid shaped and arranged to transmit a bearing force of the inner armature on the outer sleeve in case of relative radial displacement, greater than a functional limit, of the inner armature and the outer sleeve.
  • the rigid reliefs of the intermediate reinforcement comprise substantially radial internal reliefs, pointing towards the internal reinforcement.
  • the rigid reliefs of the intermediate reinforcement also comprise substantially radial external projections, pointing towards the outer sleeve.
  • Each of the rigid reliefs of the intermediate frame is for example disposed substantially symmetrically on either side of a transverse median plane, located midway between the first and second axial ends of the joint.
  • the rigid reliefs of the intermediate frame are preferably regularly arranged around the longitudinal axis of the joint.
  • the rigid reliefs of the intermediate frame may for example be divided into two groups whose respective reliefs are diametrically opposed to one another with respect to the longitudinal axis of the joint.
  • the rigid inner and outer reliefs of the intermediate frame form pairs of radial reliefs occupying the same angular position about the longitudinal axis of the joint.
  • the rigid reliefs of the intermediate armature may advantageously extend, along the longitudinal axis, over a length of less than half the distance between the first and second axial ends of
  • FIG. 1 is an axial sectional view of a hinge according to a first possible embodiment of the invention
  • FIG. 2 is a cross-sectional view of the articulation illustrated in FIG. 1, this section being taken along the plane indicated by the arrows II-II of FIG. 1
  • FIG. 3 is a view in axial section of the articulation illustrated in FIG. 1, this section being carried out according to the plane indicated by the arrows III-III of FIG. 2;
  • FIG. 4 is an axial sectional view of a hinge according to a second possible embodiment of the invention.
  • FIG. 5 is a cross-sectional view of the articulation illustrated in FIG. 4, this section being taken along the plane indicated by the arrows VV of FIG. 4.
  • the invention relates to an elastic articulation having axial ends B and H spaced apart from each other along a longitudinal axis Y and by convention respectively designated as lower and upper.
  • this articulation comprises at least, at increasing radial distance from this axis Y, an internal reinforcement 1, an intermediate reinforcement 2, and an outer sleeve 4.
  • joint concerned may include one or more other parts radially more internal than the inner armature, or radially more external than the outer sleeve.
  • This articulation also comprises damping means at least formed of an elastomer lining, a part 5A of which is interposed between the inner frame 1 and the intermediate frame 2, and of which another part 5B is interposed between this intermediate reinforcement 2 and the outer sleeve 4.
  • damping means may be of a nature not only elastic, but hydro-elastic, and comprise at least two chambers of hydraulic fluid communicating with each other by the intermediate of one or more channels.
  • damping means are designed to oppose a static and / or dynamic resistant force to any relative displacement, perpendicular to the longitudinal axis Y, of the inner armature 1 with respect to the outer sleeve 4.
  • the intermediate frame 2 has a generally cylindrical shape, supplemented by a plurality of rigid reliefs such as 3A and 3B.
  • the rigid reliefs of the intermediate reinforcement 2 which are shaped and arranged to fulfill this function, comprise for example (FIGS. 2 and 5) internal reliefs 3A, which are substantially radial and which point towards the internal reinforcement 1, and external reliefs 3B, which are themselves substantially radial but which point towards the outer sleeve 4.
  • each of the rigid reliefs 3A and 3B is disposed substantially symmetrically on either side of the median transverse plane P of the joint, that is to say the plane which crosses transversely the longitudinal axis Y to mid-distance between the axial ends B and H of this joint.
  • the internal reliefs 3A form a first group of reliefs regularly arranged around the longitudinal axis Y of the articulation, this group comprising for example two reliefs diametrically opposite one another with respect to this axis Y.
  • the external reliefs 3B form a second group of reliefs regularly arranged around the longitudinal axis Y of the joint, this group comprising for example two reliefs diametrically opposite one another with respect to this axis Y.
  • each internal relief 3A advantageously forms, with a corresponding external relief 3B, a pair of radial reliefs occupying the same angular position around the longitudinal axis Y of
  • the relative movements of the inner armature 1 and the outer sleeve 4 may include a relative pivot about the X axis of FIG. 2, this axis being perpendicular to the longitudinal axis Y and belonging to the median plane P of the articulation. .
  • the rigid reliefs 3A and 3B extend, along the longitudinal axis Y, on a length equal to or greater than half the distance between the axial ends B and H of the joint ( Figure 1), this distance being taken on the shortest of the elements that constitute the inner armature 1 and the outer sleeve 4.
  • the rigid reliefs 3A and 3B extend along the longitudinal axis. Y, over a length equal to or less than half the distance between the axial ends B and H of the hinge (not shown).
  • the reliefs 3A and 3B may be formed in one piece with the intermediate reinforcement 2, for example by molding a polymer material, an alloy, or a metal such as aluminum. This single piece can then be introduced as an insert into a mold inside which the elastomer packing 5A, 5B is then overmolded.
  • Figures 4 and 5 illustrate a possible embodiment of a hydro-elastic joint of the type known from the international patent application WO 2207/118994, but also according to the invention.
  • the hydro-elastic joint illustrated in Figures 4 and 5 also comprises a cage 6, for example formed integrally with the outer sleeve 4, and a distributor 7 threaded into a supply of axial molding of the elastomeric seal which constitutes the means of 5A and 5B damping.
  • the internal face of the distributor 7 is locally spaced from the reliefs 3B and the lining 5B so as to define hydraulic chambers, such as 9A and 9B, which communicate with each other through the channels 8A and
  • the dispenser 7 is for example made of rigid plastic, so as to retransmitting the outer sleeve 4 any bearing force that it is likely to receive the inner armature 1 through the rigid reliefs 3A and 3B.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Combined Devices Of Dampers And Springs (AREA)

Abstract

The invention relates to a hydro-elastic articulation comprising at least an inner frame (1), an intermediate frame (2), an outer sleeve (4) and damping means (5A, 5B) for applying a resistance force against any relative radial displacement of the inner frame (1) relative to the outer sleeve. According to the invention, the intermediate frame (2) has a generally cylindrical shape with a plurality of rigid protrusions (3A, 3B) shaped and arranged for transmitting a frank pushing force of the inner frame (1) onto the outer sleeve (4) in case of a relative radial displacement exceeding a functional limit of said inner frame (1) and said outer sleeve (4).

Description

ARTICULATION ELASTIQUE DOTEE D'UNE STRUCTURE DE ELASTIC JOINT HAVING A STRUCTURE OF
TRANSMISSION DIRECTE D'EFFORT SELECTIVEMENTDIRECT TRANSMISSION OF EFFORT SELECTIVELY
OPERATIONNELLE.OPERATIONAL.
L'invention concerne, de façon générale, les techniques de maîtrise des vibrations, et en particulier une articulation élastique conçue pour assembler deux pièces d'une structure de transmission d'efforts, notamment d'un véhicule à moteur, et pour amortir les vibrations transmises de l'une de ces pièces à l'autre.The invention relates, in general, to vibration control techniques, and in particular to an elastic articulation designed to assemble two parts of a force transmission structure, in particular of a motor vehicle, and to dampen the vibrations. transmitted from one of these rooms to another.
Plus précisément, l'invention concerne une articulation élastique présentant des première et seconde extrémités axiales espacées l'une de l'autre le long d'un axe longitudinal, et comprenant au moins, à distance radiale croissante de cet axe, une armature interne, une armature intermédiaire et un manchon externe, cette articulation comprenant en outre des moyens d'amortissement élastique et / ou hydro-élastique interposés d'une part entre l'armature interne et l'armature intermédiaire, et d'autre part entre cette armature intermédiaire et le manchon externe, ces moyens d'amortissement étant conçus pour opposer une force résistante statique et / ou dynamique à tout déplacement relatif, perpendiculairement à l'axe longitudinal, de l'armature interne par rapport au manchon externe.More specifically, the invention relates to an elastic hinge having first and second axial ends spaced apart from one another along a longitudinal axis, and comprising at least, at increasing radial distance from this axis, an internal reinforcement, an intermediate reinforcement and an outer sleeve, this articulation further comprising elastic and / or hydro-elastic damping means interposed on the one hand between the internal reinforcement and the intermediate reinforcement, and on the other hand between this intermediate reinforcement and the outer sleeve, these damping means being designed to oppose a static and / or dynamic resistance force to any relative displacement, perpendicular to the longitudinal axis, of the inner armature relative to the outer sleeve.
Des articulations de ce type sont notamment décrites dans les documents de brevet FR 2 853 379 et FR 2 830 911. Dans certaines applications, les moyens d'amortissement sont exclusivement constitués d'une garniture de matériau élastomère, dont les déformations engendrent une force de résistance élastique au déplacement relatif radial de l'armature interne par rapport au manchon externe. Dans d'autres applications, et comme le montrent les documents antérieurs précités, les moyens d'amortissement comprennent, en plus d'une garniture élastomère, des chambres remplies d'un liquide, dont la circulation à l'intérieur de l'articulation oppose une force de résistance dynamique au déplacement relatif radial de l'armature interne par rapport au manchon externe.Articulations of this type are described in particular in patent documents FR 2 853 379 and FR 2 830 911. In certain applications, the damping means consist exclusively of a lining of elastomeric material, the deformations of which generate a force of elastic resistance to radial relative displacement of the inner armature relative to the outer sleeve. In other applications, and as shown by the above-mentioned prior art documents, the damping means comprise, in addition to an elastomeric lining, chambers filled with a liquid, the circulation of which inside the hinge opposes a force of dynamic resistance to the radial relative displacement of the inner armature relative to the outer sleeve.
L'invention, qui est indifféremment applicable à l'un et à l'autre de ces deux types d'articulations, a pour but de proposer une articulation utilisable dans des conditions extrêmes avec un risque minimal de détérioration et de dommage irréversible.The invention, which is indifferently applicable to one and the other of these two types of joints, is intended to provide a hinge usable under extreme conditions with minimal risk of damage and irreversible damage.
A cette fin, l'articulation de l'invention, par ailleurs conforme à la définition générique qu'en donne le préambule ci-dessus, est essentiellement caractérisée en ce que l'armature intermédiaire présente une forme générale cylindrique complétée par une pluralité de reliefs rigides conformés et disposés pour transmettre une force d'appui de l'armature interne sur le manchon externe en cas de déplacement relatif radial, supérieur à une limite fonctionnelle, de cette armature interne et de ce manchon externe.To this end, the articulation of the invention, moreover in accordance with the generic definition given in the preamble above, is essentially characterized in that the intermediate reinforcement has a generally cylindrical shape supplemented by a plurality of reliefs rigid shaped and arranged to transmit a bearing force of the inner armature on the outer sleeve in case of relative radial displacement, greater than a functional limit, of the inner armature and the outer sleeve.
De préférence, les reliefs rigides de l'armature intermédiaire comprennent des reliefs internes sensiblement radiaux, pointant vers l'armature interne.Preferably, the rigid reliefs of the intermediate reinforcement comprise substantially radial internal reliefs, pointing towards the internal reinforcement.
De manière également avantageuse, les reliefs rigides de l'armature intermédiaire comprennent aussi des reliefs externes sensiblement radiaux, pointant vers le manchon externe. Chacun des reliefs rigides de l'armature intermédiaire est par exemple disposé de façon sensiblement symétrique de part et d'autre d'un plan médian transversal, situé à mi-distance entre les première et seconde extrémités axiales de l'articulation. Par ailleurs, les reliefs rigides de l'armature intermédiaire sont de préférence régulièrement disposés autour de l'axe longitudinal de l'articulation.Also advantageously, the rigid reliefs of the intermediate reinforcement also comprise substantially radial external projections, pointing towards the outer sleeve. Each of the rigid reliefs of the intermediate frame is for example disposed substantially symmetrically on either side of a transverse median plane, located midway between the first and second axial ends of the joint. Furthermore, the rigid reliefs of the intermediate frame are preferably regularly arranged around the longitudinal axis of the joint.
Les reliefs rigides de l'armature intermédiaire peuvent par exemple être répartis en deux groupes dont les reliefs respectifs sont diamétralement opposés 1 ' un à l'autre par rapport à l'axe longitudinal de l ' articulation.The rigid reliefs of the intermediate frame may for example be divided into two groups whose respective reliefs are diametrically opposed to one another with respect to the longitudinal axis of the joint.
Il est également judicieux de prévoir que les reliefs rigides internes et externes de l'armature intermédiaire forment des couples de reliefs radiaux occupant la même position angulaire autour de l'axe longitudinal de l'articulation.It is also wise to provide that the rigid inner and outer reliefs of the intermediate frame form pairs of radial reliefs occupying the same angular position about the longitudinal axis of the joint.
Dans le cas où 1 ' armature interne et le manchon externe doivent disposer d'une liberté de pivotement relatif relativement limitée, les reliefs rigides de l'armature intermédiaire peuvent avantageusement s'étendre, le long de l'axe longitudinal, sur une longueur au moins égale à la moitié de la distance séparant les première et seconde extrémités axiales deIn the case where the inner armature and the outer sleeve must have relatively limited relative pivoting freedom, the rigid reliefs of the intermediate armature may advantageously extend, along the longitudinal axis, over a length of less than half the distance between the first and second axial ends of
1 ' articulation.1 articulation.
D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
- la figure 1 est une vue en coupe axiale d'une articulation conforme à un premier mode de réalisation possible de l'invention; - la figure 2 est une vue en coupe transversale de l'articulation illustrée à la figure 1, cette coupe étant réalisée suivant le plan repéré par les flèches II-II de la figure 1; la figure 3 est une vue en coupe axiale de l'articulation illustrée à la figure 1, cette coupe étant réalisée suivant le plan repéré par les flèches III-III de la figure 2;- Figure 1 is an axial sectional view of a hinge according to a first possible embodiment of the invention; FIG. 2 is a cross-sectional view of the articulation illustrated in FIG. 1, this section being taken along the plane indicated by the arrows II-II of FIG. 1; FIG. 3 is a view in axial section of the articulation illustrated in FIG. 1, this section being carried out according to the plane indicated by the arrows III-III of FIG. 2;
- la figure 4 est une vue en coupe axiale d'une articulation conforme à un deuxième mode de réalisation possible de l'invention; et- Figure 4 is an axial sectional view of a hinge according to a second possible embodiment of the invention; and
- la figure 5 est une vue en coupe transversale de l'articulation illustrée à la figure 4, cette coupe étant réalisée suivant le plan repéré par les flèches V-V de la figure 4. Comme annoncé précédemment, l'invention concerne une articulation élastique présentant des extrémités axiales B et H espacées l'une de l'autre le long d'un axe longitudinal Y et par convention respectivement désignées comme inférieure et supérieure. Comme le montrent les figures 1 et 4, cette articulation comprend au moins, à distance radiale croissante de cet axe Y, une armature interne 1, une armature intermédiaire 2, et un manchon externe 4.FIG. 5 is a cross-sectional view of the articulation illustrated in FIG. 4, this section being taken along the plane indicated by the arrows VV of FIG. 4. As previously announced, the invention relates to an elastic articulation having axial ends B and H spaced apart from each other along a longitudinal axis Y and by convention respectively designated as lower and upper. As shown in FIGS. 1 and 4, this articulation comprises at least, at increasing radial distance from this axis Y, an internal reinforcement 1, an intermediate reinforcement 2, and an outer sleeve 4.
Les dénominations "armature interne", "armature intermédiaire", et "manchon externe" utilisées dans la présente description doivent être interprétées non pas de manière absolue, mais de manière seulement relative, en comprenant que l'armature interne est radialement plus interne que l'armature intermédiaire, cette dernière étant elle-même radialement plus interne que le manchon externe .The names "internal reinforcement", "intermediate reinforcement" and "outer sleeve" used in the present description must be interpreted not in an absolute manner, but only in a relative manner, by understanding that the internal reinforcement is radially more internal than the internal one. intermediate frame, the latter itself being radially more internal than the outer sleeve.
En revanche, ces dénominations n'excluent nullement le fait que l'articulation concernée puisse comprendre une ou plusieurs autres pièces radialement plus internes que l'armature interne, ou radialement plus externes que le manchon externe.However, these names do not exclude the fact that the joint concerned may include one or more other parts radially more internal than the inner armature, or radially more external than the outer sleeve.
Cette articulation comprend par ailleurs des moyens d'amortissement au moins formés d'une garniture élastomère dont une partie 5A est interposée entre l'armature interne 1 et l'armature intermédiaire 2, et dont une autre partie 5B est interposée entre cette armature intermédiaire 2 et le manchon externe 4.This articulation also comprises damping means at least formed of an elastomer lining, a part 5A of which is interposed between the inner frame 1 and the intermediate frame 2, and of which another part 5B is interposed between this intermediate reinforcement 2 and the outer sleeve 4.
Comme décrit dans les documents d'art antérieur précités, ces moyens d'amortissement peuvent être de nature non pas seulement élastique, mais hydro-élastique, et comprendre au moins deux chambres de fluide hydraulique communiquant l'une avec l'autre par l'intermédiaire d'un canal ou de plusieurs canaux.As described in the aforementioned prior art documents, these damping means may be of a nature not only elastic, but hydro-elastic, and comprise at least two chambers of hydraulic fluid communicating with each other by the intermediate of one or more channels.
Dans tous les cas, ces moyens d'amortissement sont conçus pour opposer une force résistante statique et / ou dynamique à tout déplacement relatif, perpendiculairement à l'axe longitudinal Y, de l'armature interne 1 par rapport au manchon externe 4.In all cases, these damping means are designed to oppose a static and / or dynamic resistant force to any relative displacement, perpendicular to the longitudinal axis Y, of the inner armature 1 with respect to the outer sleeve 4.
Dans une articulation conforme à l'invention, l'armature intermédiaire 2 présente une forme générale cylindrique, complétée par une pluralité de reliefs rigides tels que 3A et 3B.In a hinge according to the invention, the intermediate frame 2 has a generally cylindrical shape, supplemented by a plurality of rigid reliefs such as 3A and 3B.
Ces reliefs ont pour fonction de transmettre une force d'appui de l'armature interne 1 sur le manchon externe 4, lorsque cette armature 1 et ce manchon 4 subissent, suivant une direction radiale par rapport à l'axe Y, un déplacement relatif d'une amplitude supérieure à une limite fonctionnelle déterminée.These reliefs have the function of transmitting a bearing force of the inner armature 1 on the outer sleeve 4, when this armature 1 and this sleeve 4 undergo, in a direction radial relative to the axis Y, a relative displacement of an amplitude greater than a determined functional limit.
Les reliefs rigides de l'armature intermédiaire 2, qui sont conformés et disposés pour remplir cette fonction, comprennent par exemple (figures 2 et 5) des reliefs internes 3A, qui sont sensiblement radiaux et qui pointent vers l'armature interne 1, et des reliefs externes 3B, qui sont eux-mêmes sensiblement radiaux mais qui pointent vers le manchon externe 4.The rigid reliefs of the intermediate reinforcement 2, which are shaped and arranged to fulfill this function, comprise for example (FIGS. 2 and 5) internal reliefs 3A, which are substantially radial and which point towards the internal reinforcement 1, and external reliefs 3B, which are themselves substantially radial but which point towards the outer sleeve 4.
Comme le montrent les figures 1 et 4, chacun des reliefs rigides 3A et 3B est disposé de façon sensiblement symétrique de part et d'autre du plan transversal médian P de l'articulation, c'est-à-dire du plan qui coupe transversalement l'axe longitudinal Y à mi-distance entre les extrémités axiales B et H de cette articulation.As shown in Figures 1 and 4, each of the rigid reliefs 3A and 3B is disposed substantially symmetrically on either side of the median transverse plane P of the joint, that is to say the plane which crosses transversely the longitudinal axis Y to mid-distance between the axial ends B and H of this joint.
Les reliefs internes 3A forment un premier groupe de reliefs régulièrement disposés autour de l'axe longitudinal Y de l'articulation, ce groupe comprenant par exemple deux reliefs diamétralement opposés l'un à l'autre par rapport à cet axe Y.The internal reliefs 3A form a first group of reliefs regularly arranged around the longitudinal axis Y of the articulation, this group comprising for example two reliefs diametrically opposite one another with respect to this axis Y.
De même, les reliefs externes 3B forment un deuxième groupe de reliefs régulièrement disposés autour de l'axe longitudinal Y de l'articulation, ce groupe comprenant par exemple deux reliefs diamétralement opposés l'un à l'autre par rapport à cet axe Y.Similarly, the external reliefs 3B form a second group of reliefs regularly arranged around the longitudinal axis Y of the joint, this group comprising for example two reliefs diametrically opposite one another with respect to this axis Y.
De plus (figures 2 et 5), chaque relief interne 3A forme avantageusement, avec un relief externe 3B correspondant, un couple de reliefs radiaux occupant la même position angulaire autour de l'axe longitudinal Y deIn addition (FIGS. 2 and 5), each internal relief 3A advantageously forms, with a corresponding external relief 3B, a pair of radial reliefs occupying the same angular position around the longitudinal axis Y of
1 ' articulation.1 articulation.
En d'autres termes, il peut être préférable de faire en sorte que les reliefs 3A et 3B se correspondent, au lieu d'être décalés angulairement les uns par rapport aux autres .In other words, it may be preferable to make the reliefs 3A and 3B correspond, instead of being offset angularly with respect to each other.
Les mouvements relatifs de l'armature interne 1 et du manchon externe 4 peuvent inclure un pivotement relatif autour de l'axe X de la figure 2, cet axe étant perpendiculaire à l'axe longitudinal Y et appartenant au plan médian P de l'articulation.The relative movements of the inner armature 1 and the outer sleeve 4 may include a relative pivot about the X axis of FIG. 2, this axis being perpendicular to the longitudinal axis Y and belonging to the median plane P of the articulation. .
Néanmoins, il peut être souhaitable de réduire ou au contraire d'augmenter la valeur de l'amplitude autorisée de ce mouvement de pivotement. Dans le cas où une valeur faible de débattement angulaire de l'armature interne 1 et du manchon externe 4 est souhaitée, il est possible de prévoir que les reliefs rigides 3A et 3B s'étendent, le long de l'axe longitudinal Y, sur une longueur égale ou supérieure à la moitié de la distance qui sépare les extrémités axiales B et H de l'articulation (figure 1), cette distance étant prise sur le plus court des éléments que constituent 1 ' armature interne 1 et le manchon externe 4.Nevertheless, it may be desirable to reduce or on the contrary increase the value of the authorized amplitude of this pivoting movement. In the case where a low value of angular displacement of the internal reinforcement 1 and the outer sleeve 4 is desired, it is possible to provide that the rigid reliefs 3A and 3B extend, along the longitudinal axis Y, on a length equal to or greater than half the distance between the axial ends B and H of the joint (Figure 1), this distance being taken on the shortest of the elements that constitute the inner armature 1 and the outer sleeve 4.
En revanche, dans le cas où une valeur importante de débattement angulaire de l'armature interne 1 et du manchon externe 4 est souhaitée, il est possible de prévoir que les reliefs rigides 3A et 3B s'étendent, le long de l'axe longitudinal Y, sur une longueur égale ou inférieure à la moitié de la distance qui sépare les extrémités axiales B et H de l'articulation (non représenté) .On the other hand, in the case where a large value of angular displacement of the internal reinforcement 1 and the outer sleeve 4 is desired, it is possible to provide that the rigid reliefs 3A and 3B extend along the longitudinal axis. Y, over a length equal to or less than half the distance between the axial ends B and H of the hinge (not shown).
Dans un mode de réalisation optimisé au plan industriel, les reliefs 3A et 3B peuvent être formés d'une seule pièce avec l'armature intermédiaire 2, par exemple par moulage d'un matériau polymère, d'un alliage, ou d'un métal tel que l'aluminium. Cette- pièce unique peut ensuite être introduite en tant qu' insert dans un moule à l'intérieur duquel est alors surmoulée la garniture élastomère 5A, 5B.In an industrially optimized embodiment, the reliefs 3A and 3B may be formed in one piece with the intermediate reinforcement 2, for example by molding a polymer material, an alloy, or a metal such as aluminum. This single piece can then be introduced as an insert into a mold inside which the elastomer packing 5A, 5B is then overmolded.
Les figures 4 et 5 illustrent un mode de réalisation possible d'une articulation hydro-élastique du type connu par la demande internationale de brevet WO 2207/118994, mais par ailleurs conforme à l'invention.Figures 4 and 5 illustrate a possible embodiment of a hydro-elastic joint of the type known from the international patent application WO 2207/118994, but also according to the invention.
En plus des éléments déjà décrits en référence aux figures précédentes, à savoir l'armature interne 1, l'armature intermédiaire 2, les reliefs rigides 3A et 3B, le manchon externe 4, et les moyens d'amortissement 5A et 5B, l'articulation hydro-élastique illustrée aux figures 4 et 5 comprend également une cage 6, par exemple formée d'une seule pièce avec le manchon externe 4, et un distributeur 7 enfilé dans une réserve de moulage axiale de la garniture élastomère qui constitue les moyens d'amortissement 5A et 5B.In addition to the elements already described with reference to the preceding figures, namely the inner armature 1, the intermediate armature 2, the rigid reliefs 3A and 3B, the outer sleeve 4, and the damping means 5A and 5B, the hydro-elastic joint illustrated in Figures 4 and 5 also comprises a cage 6, for example formed integrally with the outer sleeve 4, and a distributor 7 threaded into a supply of axial molding of the elastomeric seal which constitutes the means of 5A and 5B damping.
Le distributeur 7, qui coopère avec l'extrémité inférieure 60 de la cage 6 et avec l'extrémité inférieure 40 du manchon externe 4 pour obturer axialement la réserve de moulage axiale, est par exemple percé de canaux tels que 8A et 8B.The distributor 7, which cooperates with the lower end 60 of the cage 6 and with the lower end 40 of the outer sleeve 4 to axially seal the axial molding reserve, for example is pierced with channels such as 8A and 8B.
La face interne du distributeur 7 est localement espacée des reliefs 3B et de la garniture 5B de manière à définir des chambres hydrauliques, telles que 9A et 9B, qui communiquent entre elles à travers les canaux 8A etThe internal face of the distributor 7 is locally spaced from the reliefs 3B and the lining 5B so as to define hydraulic chambers, such as 9A and 9B, which communicate with each other through the channels 8A and
8B.8B.
Le distributeur 7 est par exemple réalisé en matière plastique rigide, de manière à pouvoir retransmettre au manchon externe 4 toute force d'appui qu'il est susceptible de recevoir de l'armature interne 1 à travers les reliefs rigides 3A et 3B. The dispenser 7 is for example made of rigid plastic, so as to retransmitting the outer sleeve 4 any bearing force that it is likely to receive the inner armature 1 through the rigid reliefs 3A and 3B.

Claims

REVENDICATIONS. CLAIMS.
1. Articulation élastique présentant des première et seconde extrémités axiales (B, H) espacées l'une de l'autre le long d'un axe longitudinal (Y), et comprenant au moins, à distance radiale croissante de cet axe, une armature interne (1), une armature intermédiaire (2) et un manchon externe (4), cette articulation comprenant en outre des moyens d'amortissement élastique et / ou hydroélastique (5A, 5B) interposés d'une part entre l'armature interne (1) et l'armature intermédiaire (2), et d'autre part entre cette armature intermédiaire (2) et le manchon externe (4), ces moyens d'amortissement étant conçus pour opposer une force résistante statique et / ou dynamique à tout déplacement relatif, perpendiculairement à l'axe longitudinal, de l'armature interne (1) par rapport au manchon externe, caractérisée en ce que l'armature intermédiaire (2) présente une forme générale cylindrique complétée par une pluralité de reliefs rigides (3A, 3B) conformés et disposés pour transmettre une force d'appui de l'armature interne (1) sur le manchon externe (4) en cas de déplacement relatif radial, supérieur à une limite fonctionnelle, de cette armature interne (1) et de ce manchon externe (4), les reliefs rigides (3A, 3B) et l'armature intermédiaire (2) formant une seule pièce.1. Elastic articulation having first and second axial ends (B, H) spaced apart from one another along a longitudinal axis (Y), and comprising at least, at increasing radial distance from this axis, an armature internal member (1), an intermediate reinforcement (2) and an outer sleeve (4), this articulation further comprising elastic and / or hydroelastic damping means (5A, 5B) interposed on the one hand between the internal reinforcement ( 1) and the intermediate frame (2), and secondly between the intermediate frame (2) and the outer sleeve (4), these damping means being designed to oppose a static and / or dynamic resistance force to any relative displacement, perpendicular to the longitudinal axis, of the inner armature (1) relative to the outer sleeve, characterized in that the intermediate armature (2) has a generally cylindrical shape supplemented by a plurality of rigid reliefs (3A, 3B) consistent and arranged for transmitting a bearing force of the inner armature (1) on the outer sleeve (4) in the case of radial relative displacement, greater than a functional limit, of this inner armature (1) and of this outer sleeve (4) , the rigid reliefs (3A, 3B) and the intermediate frame (2) forming a single piece.
2. Articulation élastique suivant la revendication 1, caractérisée en ce que les reliefs rigides de l'armature intermédiaire (2) comprennent des reliefs internes sensiblement radiaux (3A) , pointant vers l'armature interne (1).2. Elastic joint according to claim 1, characterized in that the rigid reliefs of the intermediate frame (2) comprise substantially radial internal reliefs (3A), pointing to the inner frame (1).
3. Articulation élastique suivant l'une quelconque des revendications précédentes, caractérisée en ce que les reliefs rigides de l'armature intermédiaire (2) comprennent des reliefs externes sensiblement radiaux (3B), pointant vers le manchon externe (4). 3. Elastic joint according to any one of the preceding claims, characterized in that the rigid reliefs of the intermediate frame (2) comprise substantially radial external reliefs (3B), pointing to the outer sleeve (4).
4. Articulation élastique suivant l'une quelconque des revendications précédentes, caractérisée en ce que chacun des reliefs riqides (3A, 3B) de l'armature intermédiaire (2) est disposé de façon sensiblement symétrique de part et d'autre d'un plan médian transversal, situé à mi-distance entre les première et seconde extrémités axiales (B, H) de l'articulation.4. Elastic joint according to any one of the preceding claims, characterized in that each of the reliefs riqides (3A, 3B) of the intermediate frame (2) is disposed substantially symmetrically on either side of a plane medial transverse, located midway between the first and second axial ends (B, H) of the joint.
5. Articulation élastique suivant l'une quelconque des revendications précédentes, caractérisée en ce que les reliefs rigides (3A, 3B) de l'armature intermédiaire (2) sont régulièrement disposés autour de l'axe longitudinal (Y) de l'articulation.5. Elastic joint according to any one of the preceding claims, characterized in that the rigid reliefs (3A, 3B) of the intermediate frame (2) are regularly arranged around the longitudinal axis (Y) of the joint.
6. Articulation élastique suivant l'une quelconque des revendications précédentes, caractérisée en ce que les reliefs rigides (3A, 3B) de l'armature intermédiaire (2) sont répartis en deux groupes dont les reliefs respectifs sont diamétralement opposés l'un à l'autre par rapport à l'axe longitudinal (Y) de l'articulation.6. Elastic joint according to any one of the preceding claims, characterized in that the rigid reliefs (3A, 3B) of the intermediate frame (2) are divided into two groups whose respective reliefs are diametrically opposed to each other. other in relation to the longitudinal axis (Y) of the joint.
7. Articulation élastique suivant l'une quelconque des revendications précédentes combinée aux revendications 2 et 3, caractérisée en ce que les reliefs rigides internes et externes (3A, 3B) de l'armature intermédiaire (2) forment des couples de reliefs radiaux occupant la même position angulaire autour de l'axe longitudinal (Y) de l'articulation.7. Elastic joint according to any one of the preceding claims combined with claims 2 and 3, characterized in that the inner and outer rigid reliefs (3A, 3B) of the intermediate armature (2) form pairs of radial reliefs occupying the same angular position around the longitudinal axis (Y) of the joint.
8. Articulation élastique suivant l'une quelconque des revendications précédentes, caractérisée en ce que les reliefs rigides (3A, 3B) de l'armature intermédiaire (2) s'étendent, le long de l'axe longitudinal (Y), sur une longueur au moins égale à la moitié de la distance séparant les première et seconde extrémités axiales (B, H) de l'articulation.8. Elastic articulation according to any one of the preceding claims, characterized in that the rigid reliefs (3A, 3B) of the intermediate reinforcement (2) extend, along the longitudinal axis (Y), on a length at least equal to half the distance between the first and second axial ends (B, H) of the joint.
9. Articulation élastique suivant l'une quelconque des revendications précédentes, caractérisée en ce que les reliefs rigides (3A, 3B) et l'armature intermédiaire (2) sont réalisés d'une seule pièce par moulage. 9. Elastic joint according to any one of the preceding claims, characterized in that the rigid reliefs (3A, 3B) and the intermediate frame (2) are made in one piece by molding.
10. Articulation élastique suivant l'une quelconque des revendications précédentes, caractérisée en ce que les moyens d'amortissement comprennent une garniture élastomère (5a, 5b) surmoulée sur l'armature intermédiaire (2). 10. Elastic joint according to any one of the preceding claims, characterized in that the damping means comprises an elastomeric seal (5a, 5b) overmolded on the intermediate frame (2).
EP07870361A 2006-12-01 2007-11-29 Elastic articulation with a selectively functional, direct force-transmission structure Withdrawn EP2097656A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0610542A FR2909428A1 (en) 2006-12-01 2006-12-01 Elastic hinge for force transmission structure of motor vehicle, has intermediate armature with reliefs for transmitting force to support internal armature on sleeve when displacement of internal armature and sleeve is greater than limit
PCT/FR2007/001966 WO2008071885A2 (en) 2006-12-01 2007-11-29 Elastic articulation with a selectively functional, direct force-transmission structure

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US9909642B2 (en) * 2015-04-08 2018-03-06 Vibracoustic Gmbh Damper for a drive train
FR3066001B1 (en) 2017-05-04 2020-06-19 Sumiriko Industry France S.A.S. HYDROELASTIC DEVICE HAVING A LOCKING SYSTEM
FR3066002A1 (en) 2017-05-04 2018-11-09 Sumiriko Industry France S.A.S. HYDROELASTIC DEVICE HAVING A DEPLACABLE RIGID BLOCKING PIECE

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WO2008071885A3 (en) 2008-07-31
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