WO2007071858A1 - Torque reaction rod comprising a little insert of oval cross section - Google Patents

Torque reaction rod comprising a little insert of oval cross section Download PDF

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Publication number
WO2007071858A1
WO2007071858A1 PCT/FR2006/051227 FR2006051227W WO2007071858A1 WO 2007071858 A1 WO2007071858 A1 WO 2007071858A1 FR 2006051227 W FR2006051227 W FR 2006051227W WO 2007071858 A1 WO2007071858 A1 WO 2007071858A1
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WO
WIPO (PCT)
Prior art keywords
small
ring
insert
sleeve
section
Prior art date
Application number
PCT/FR2006/051227
Other languages
French (fr)
Inventor
Marc Antoine Sanchez
Original Assignee
Renault S.A.S
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 Renault S.A.S filed Critical Renault S.A.S
Publication of WO2007071858A1 publication Critical patent/WO2007071858A1/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
    • 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
    • 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
    • F16F1/3842—Method of assembly, production or treatment; Mounting thereof
    • F16F1/3849—Mounting brackets therefor, e.g. stamped steel brackets; Restraining links

Definitions

  • the present invention relates to a torque recovery rod. Certain bodies of motor vehicles are connected to the vehicle body by connecting rods whose function is to absorb vibrations.
  • FR 2,722,259 discloses a connecting rod which comprises a metal body connecting two end sleeves, a large sleeve and a smaller sleeve.
  • a metal insert surrounded by a ring of material capable of absorbing vibrations, such as for example, rubber.
  • the large sleeve contains a large ring, thick, while the small sleeve has a small ring, of smaller thickness.
  • the large ring has the function of absorbing acoustic vibrations that is why a thick rubber or similar is used.
  • the small insert and the small sleeve are subjected to heavy mechanical forces that damage the small ring that surrounds it.
  • An object of the present invention is to provide a rod of the aforementioned type which has improved endurance in the large ring thanks to the small ring.
  • an anti-vibratory connecting rod comprising, in known manner, an elongated substantially flat body defining a plane and a longitudinal direction and which connects a large end sleeve and a small end sleeve. which respectively define a large and a small passage, in a direction perpendicular to the plane of the body and in which are inserted, respectively, a large and a small ring, of material capable of absorbing vibrations, each ring having an outer surface in contact with the sleeves and an inner surface in contact with the outer surface, respectively, of a large and a small insert.
  • the small insert and the inner surface of the small ring have, in the plane defined by the body, a substantially oval section whose largest dimension extends in a direction substantially perpendicular to the direction longitudinal.
  • the areas of the small insert and the small ring that work are the areas perpendicular to the longitudinal direction defined by the body.
  • the oval shape maximizes the surfaces of the zones subjected to the efforts and thus to better distribute them; the small insert and the small ring have improved endurance.
  • the outer surface of the small ring and the passage of the small sleeve have, in the plane defined by the body, a substantially oval section whose largest dimension extends in a direction substantially perpendicular to the longitudinal direction.
  • the endurance of the small insert-small ring assembly is further improved.
  • the small insert and the inner surface of the small ring have, in the plane of the body, a substantially elliptical section whose major axis extends in a direction substantially perpendicular to the longitudinal direction.
  • the outer surface of the small ring and the passage of the small sleeve have, in the plane, a substantially elliptical section whose major axis extends in a direction substantially perpendicular to the longitudinal direction.
  • the thickness of at least the portion of the small ring located between the small sleeve and the small insert, on either side of the small dimension of the oval section is constant. The Applicant has indeed found that the small ring and the small insert work essentially in shear in the direction perpendicular to the plane defined by the body. The constant thickness makes it possible to modify the stiffness of the small ring and thus to increase its endurance against forces perpendicular to the plane of the body.
  • the thickness is between 1 mm and 10 mm, which makes it possible to obtain, for Shore hardnesses of commonly used materials, a satisfactory stiffness of the small ring.
  • the section of the small insert has a substantially oval shape cut at at least one of the ends of the largest dimension. This shape saves space at the insert, the rod then remains small in size without reducing the endurance of the small insert and the small ring. The Applicant has indeed found that the ends of the working surfaces are less subject to efforts.
  • the section of the outer surface of the small ring and / or the passage of the small sleeve has a substantially oval shape cut at at least one of the ends of the largest dimension.
  • the outer surface of the large insert and the inner surface of the large ring have, in the plane of the body, a substantially oval section whose largest dimension extends in a direction substantially perpendicular to the longitudinal direction defined by the body.
  • This oval shape prevents the large ring slips around the large insert under the effect of efforts creating mechanical stresses.
  • the assembly formed by the large ring containing the large insert and / or the assembly formed by the partite ring containing the small insert can be fixed in the body by a fastening collar which surrounds the ring. Any other method of attachment including those allowing a certain degree of freedom of the small or large ring in its respective passage and / or the small insert and / or large insert in its respective ring, can also be implemented.
  • FIG. 1 shows a perspective view of a particular embodiment of the invention
  • FIG. 2 shows a cross-sectional view of the small insert molded into the small ring of the embodiment of Figure 1;
  • FIG. 3 represents a perspective view of the small insert disposed in the small ring equipping the embodiment shown in FIG. 1.
  • the connecting rod 1 of the invention comprises a metal body 2, for example , in aluminium.
  • the body 2 defines a plane P containing a longitudinal direction X which corresponds to the length of the body 2 and, in the example shown, to its axis of symmetry.
  • the ends of the body 2 respectively comprise a large sleeve 3 and a small sleeve 4.
  • Each of the sleeves 3 and 4 defines a passage in the direction Z, perpendicular to the plane P of the body 2.
  • the large sleeve 3 defines a passage of circular or oval section while the small sleeve 4 defines a passage of oval section.
  • a large insert 5 which, in cross section in the plane defined by the body 2, an oval section, is mounted in a rubber ring 51.
  • the oval section of the insert 5 extends in the direction Y which is perpendicular
  • the ring 51 thus has an inner surface of oval section adapted to surround the outer surface of the insert 5 and an outer surface of circular section to fit into the circular section passage of the large sleeve 3
  • a fastening collar 52 makes it possible to fix the ring + insert assembly in the passage of the large sleeve 3, without any possible movement for the latter, in particular along the Z axis of the passage of the large sleeve 3.
  • the fastening collar 52 also allows to confine the rubber or other material constituting the large ring 51, which improves the endurance of the rod.
  • the large insert 5 has a non-symmetrical opening 73 which makes it possible to orient the large ring + large insert assembly when they are mounted in the body 2 of the connecting rod 1.
  • the present invention is nevertheless not limited to this type of embodiment. for the large sleeve and the large insert.
  • the rod of the invention may also comprise a large insert and a large ring inserted with clearance in the large sleeve, that is to say without clamping collar.
  • a small insert 6 of substantially oval section is inserted in a small ring 61 disposed in the passage of the small sleeve 4.
  • This ring 61 thus has an inner surface of oval section adapted to come into contact with the outer surface of the small insert 6 and a outer surface of oval section adapted to be inserted into the passage of oval section of the small sleeve 4.
  • the small ring 61 is inserted in force and held by the two lips 71 and 72 (visible in Figure 3) in the passage of the small sleeve 4 but according to another embodiment not shown, the small ring is fixed in the body 2 by means of a fastening collar.
  • the cross sections of the small insert 6 and the ring 61 in the plane P of the body 2 are substantially elliptical.
  • the insert 6 forms an ellipse which has a small axis AB and a major axis CD.
  • the major axis CD is disposed substantially perpendicular to the longitudinal direction X.
  • the ends of the Ellipse along the major axis CD are cut and have notches 64 and 65 which improve the reliability of the connecting rod. The Applicant has indeed found that the ends of the ellipse are less subject to efforts. Cutting them reduces the space occupied by the insert 6 while maximizing the radius of curvature of the working surfaces 62 and 63.
  • the ring 61 forms an ellipse of small axis A'B 'and of major axis CD' which respectively extend the large and the minor axis of the ellipse formed by the insert 6.
  • the formed ellipse by the ring 61 is a homothety of the ellipse formed by the insert 6.
  • the thickness e of the ring 61 at the working surfaces 62 and 63 is constant. This thickness e of rubber or the like is compressed between the insert 6 and the small sleeve 4 which gives it a greater stiffness.
  • the small ring 61 is thus more resistant to the stresses to which it is subjected.
  • the ellipse formed by the outer surface of the ring 61 has cut ends along the major axis CD 'for the same reasons of bulk as explained above, with reference to the small insert 6.
  • the small insert 6 has an opening 70 which allows to orient the assembly small ring 61+ small insert 6 during their assembly in the body 2 of the connecting rod 1.
  • the small sleeve 4 has it, a passage of elliptical cross-section in the plane of the body 2.
  • the section of the passage of the small sleeve 4 is an ellipse which is a homothety of the ellipses formed by the external surface of the insert 6 and the outer surface of the ring 61.
  • the invention is however not limited to this embodiment and the ellipse formed by the outer surface of the ring and the passage of the small sleeve 4 may not be homothetic.
  • the section of the outer surface of the small ring 61 may be circular as well as the passage defined by the small sleeve 4.
  • 3 shows a perspective view of a particular embodiment of the small ring 61.
  • the small ring 61 is substantially cylindrical. Its outer surface which cooperates with the small sleeve 4 comprises two lips 71 and 72.
  • the lower lip 72 is deformed so as to let the small ring 61, containing the small insert 6.
  • the small insert 6 and the small ring 61 are mounted in the body 2.
  • the lips 71 and 72 serve as a stop and prevent the movement of the small ring 61 and the small insert 6 along the Z axis of the passage of the small sleeve 4 while allowing a certain clearance of the small ring 61.
  • the sections of the small insert 6 and the small ring 61 are elliptical but any other section having a large dimension oriented in a direction perpendicular to the longitudinal direction of the body can also be used.

Abstract

The present invention relates to an antivibration rod comprising an elongate body (2) which connects together a big end sleeve (3) and a little end sleeve (4) in which a respective big (51) and little (61) ring of vibration-absorbing material are inserted. Inserted into each ring are a big insert and a little insert (5; 6 respectively). According to the invention, the little insert (6) and the interior surface of the little ring (61) have, in the plane defined by the body, a more or less oval cross section, the longest dimension (CD) of which runs in a direction (Y) more or less perpendicular to the longitudinal direction (X).

Description

BIELLE DE REPRISE DE COUPLE COMPORTANT UN PETIT INSERT DE SECTION OVALE TORQUE RETURN ROD COMPRISING A SMALL OVAL SECTION INSERT
La présente invention concerne une bielle de reprise de couple. Certains organes des véhicules automobiles sont reliés à la caisse du véhicule par des bielles dont la fonction est d'absorber les vibrations.The present invention relates to a torque recovery rod. Certain bodies of motor vehicles are connected to the vehicle body by connecting rods whose function is to absorb vibrations.
Le document FR 2 722 259 décrit une bielle qui comporte un corps métallique reliant deux manchons d'extrémités, un grand manchon et un manchon plus petit. Dans chaque manchon est monté un insert métallique entouré d'une bague en matériau capable d'absorber les vibrations, tel que par exemple, le caoutchouc. Le grand manchon contient une grande bague, de forte épaisseur, tandis que le petit manchon comporte une petite bague, de plus faible épaisseur. La grande bague a pour fonction d'absorber les vibrations acoustiques c'est pourquoi une forte épaisseur de caoutchouc ou similaire est utilisée. Le petit insert et le petit manchon sont soumis à de gros efforts mécaniques qui endommagent la petite bague qui l'enserre. Un but de la présente invention est de proposer une bielle du type précité qui présente une endurance améliorée au niveau de la grande bague grâce à la petite bague.FR 2,722,259 discloses a connecting rod which comprises a metal body connecting two end sleeves, a large sleeve and a smaller sleeve. In each sleeve is mounted a metal insert surrounded by a ring of material capable of absorbing vibrations, such as for example, rubber. The large sleeve contains a large ring, thick, while the small sleeve has a small ring, of smaller thickness. The large ring has the function of absorbing acoustic vibrations that is why a thick rubber or similar is used. The small insert and the small sleeve are subjected to heavy mechanical forces that damage the small ring that surrounds it. An object of the present invention is to provide a rod of the aforementioned type which has improved endurance in the large ring thanks to the small ring.
Ce but est atteint au moyen d'une bielle anti vibratoire comprenant, de manière connue, un corps allongé, sensiblement plat, définissant un plan et une direction longitudinale et qui relie entre eux un grand manchon d'extrémité et un petit manchon d'extrémité qui définissent respectivement un grand et un petit passage, selon une direction perpendiculaire au plan du corps et dans lesquels sont insérées, respectivement, une grande et une petite bague, en matériau capable d'absorber les vibrations, chaque bague présentant une surface externe en contact avec les manchons et une surface intérieure en contact avec la surface externe, respectivement, d'un grand et d'un petit insert. De manière caractéristique, selon l'invention, le petit insert et la surface intérieure de la petite bague ont, dans le plan défini par le corps, une section sensiblement ovale dont la plus grande dimension s'étend dans une direction sensiblement perpendiculaire à la direction longitudinale.This object is achieved by means of an anti-vibratory connecting rod comprising, in known manner, an elongated substantially flat body defining a plane and a longitudinal direction and which connects a large end sleeve and a small end sleeve. which respectively define a large and a small passage, in a direction perpendicular to the plane of the body and in which are inserted, respectively, a large and a small ring, of material capable of absorbing vibrations, each ring having an outer surface in contact with the sleeves and an inner surface in contact with the outer surface, respectively, of a large and a small insert. Typically, according to the invention, the small insert and the inner surface of the small ring have, in the plane defined by the body, a substantially oval section whose largest dimension extends in a direction substantially perpendicular to the direction longitudinal.
En effet, c'est le mérite de la Demanderesse que d'avoir constaté que les zones du petit insert et de la petite bague qui travaillent sont les zones perpendiculaires à la direction longitudinale définie par le corps. Ainsi, la forme ovale permet de maximiser les surfaces des zones soumises aux efforts et donc de mieux repartir ces derniers ; le petit insert et la petite bague ont donc une endurance améliorée.Indeed, it is the merit of the Claimant to have found that the areas of the small insert and the small ring that work are the areas perpendicular to the longitudinal direction defined by the body. Thus, the oval shape maximizes the surfaces of the zones subjected to the efforts and thus to better distribute them; the small insert and the small ring have improved endurance.
Avantageusement, la surface externe de la petite bague et le passage du petit manchon ont, dans le plan défini par le corps, une section sensiblement ovale dont la plus grande dimension s'étend dans une direction sensiblement perpendiculaire à la direction longitudinale. Dans ce cas, l'endurance de l'ensemble petit insert-petite bague est encore améliorée.Advantageously, the outer surface of the small ring and the passage of the small sleeve have, in the plane defined by the body, a substantially oval section whose largest dimension extends in a direction substantially perpendicular to the longitudinal direction. In this case, the endurance of the small insert-small ring assembly is further improved.
Avantageusement, le petit insert et la surface intérieure de la petite bague ont, dans le plan du corps, une section sensiblement en forme d'ellipse dont le grand axe s'étend dans une direction sensiblement perpendiculaire à la direction longitudinale.Advantageously, the small insert and the inner surface of the small ring have, in the plane of the body, a substantially elliptical section whose major axis extends in a direction substantially perpendicular to the longitudinal direction.
Avantageusement, la surface externe de la petite bague et le passage du petit manchon ont, dans le plan, une section sensiblement en forme d'ellipse dont le grand axe s'étend dans une direction sensiblement perpendiculaire à la direction longitudinale. Avantageusement, l'épaisseur d'au moins la portion de la petite bague située entre le petit manchon et le petit insert, de part et d'autre de la petite dimension de la section ovale, est constante. La Demanderesse a en effet constaté que la petite bague et le petit insert travaillent essentiellement en cisaillement selon la direction perpendiculaire au plan défini par le corps. L'épaisseur constante permet de modifier la raideur de la petite bague et donc d'accroître son endurance face à des efforts perpendiculaires au plan du corps.Advantageously, the outer surface of the small ring and the passage of the small sleeve have, in the plane, a substantially elliptical section whose major axis extends in a direction substantially perpendicular to the longitudinal direction. Advantageously, the thickness of at least the portion of the small ring located between the small sleeve and the small insert, on either side of the small dimension of the oval section, is constant. The Applicant has indeed found that the small ring and the small insert work essentially in shear in the direction perpendicular to the plane defined by the body. The constant thickness makes it possible to modify the stiffness of the small ring and thus to increase its endurance against forces perpendicular to the plane of the body.
Avantageusement, l'épaisseur est comprise entre lmm et 10mm, ce qui permet d'obtenir, pour des duretés Shore de matériaux couramment utilisés, une raideur satisfaisante de la petite bague. Avantageusement, la section du petit insert a une forme sensiblement ovale coupée au niveau d'au moins une des extrémités de la plus grande dimension. Cette forme permet de gagner de la place au niveau de l' insert, la bielle reste alors de taille modique sans pour autant diminuer l'endurance du petit insert et de la petite bague. La Demanderesse a en effet constaté que les extrémités des surfaces qui travaillent sont moins soumises aux efforts. Avantageusement, la section de la surface externe de la petite bague et/ou du passage du petit manchon a une forme sensiblement ovale coupée au niveau d'au moins une des extrémités de la plus grande dimension.Advantageously, the thickness is between 1 mm and 10 mm, which makes it possible to obtain, for Shore hardnesses of commonly used materials, a satisfactory stiffness of the small ring. Advantageously, the section of the small insert has a substantially oval shape cut at at least one of the ends of the largest dimension. This shape saves space at the insert, the rod then remains small in size without reducing the endurance of the small insert and the small ring. The Applicant has indeed found that the ends of the working surfaces are less subject to efforts. Advantageously, the section of the outer surface of the small ring and / or the passage of the small sleeve has a substantially oval shape cut at at least one of the ends of the largest dimension.
Avantageusement, au moins la surface externe du grand insert et la surface intérieure de la grande bague ont, dans le plan du corps, une section sensiblement ovale dont la plus grande dimension s'étend dans une direction sensiblement perpendiculaire à la direction longitudinale définie par le corps. Cette forme ovale permet d'éviter que la grande bague ne glisse autour du grand insert sous l'effet des efforts créant des contraintes mécaniques. Selon l'invention, l'ensemble formé par la grande bague contenant le grand insert et/ou l'ensemble formé par la partite bague contenant le petit insert peut être fixé dans le corps par un collier de fixation qui entoure la bague. Tout autre mode de fixation y compris ceux permettant un certain degré de liberté de la petite ou grande bague dans son passage respectif et/ou du petit insert et/ou du grand insert dans sa bague respective, peuvent aussi être mis en oeuvre.Advantageously, at least the outer surface of the large insert and the inner surface of the large ring have, in the plane of the body, a substantially oval section whose largest dimension extends in a direction substantially perpendicular to the longitudinal direction defined by the body. This oval shape prevents the large ring slips around the large insert under the effect of efforts creating mechanical stresses. According to the invention, the assembly formed by the large ring containing the large insert and / or the assembly formed by the partite ring containing the small insert can be fixed in the body by a fastening collar which surrounds the ring. Any other method of attachment including those allowing a certain degree of freedom of the small or large ring in its respective passage and / or the small insert and / or large insert in its respective ring, can also be implemented.
La présente invention, ses caractéristiques et les divers avantages qu'elle procure apparaîtront mieux à la lecture de la description qui suit d'un mode de réalisation particulier qui fait référence aux dessins annexés et sur lesquels :The present invention, its characteristics and the various advantages that it affords will appear better on reading the following description of a particular embodiment which refers to the appended drawings and in which:
- la figure 1 représente une vue en perspective d'un mode de réalisation particulier de l'invention ;- Figure 1 shows a perspective view of a particular embodiment of the invention;
- la figure 2 représente une vue en coupe transversale du petit insert moulé dans la petite bague du mode de réalisation de la figure 1 ; et- Figure 2 shows a cross-sectional view of the small insert molded into the small ring of the embodiment of Figure 1; and
- la figure 3 représente une vue en perspective du petit insert disposé dans la petite bague équipant le mode de réalisation représenté sur la figure 1. En référence à la figure 1, la bielle 1 de l'invention comporte un corps métallique 2, par exemple, en aluminium. Le corps 2 définit un plan P contenant une direction longitudinale X qui correspond à la longueur du corps 2 et, dans l'exemple représenté, à son axe de symétrie. Les extrémités du corps 2 comportent respectivement un grand manchon 3 et un petit manchon 4. Chacun des manchons 3 et 4 définit un passage selon la direction Z, perpendiculaire au plan P du corps 2. Le grand manchon 3 définit un passage de section circulaire ou ovale tandis que le petit manchon 4 définit un passage de section ovale.FIG. 3 represents a perspective view of the small insert disposed in the small ring equipping the embodiment shown in FIG. 1. With reference to FIG. 1, the connecting rod 1 of the invention comprises a metal body 2, for example , in aluminium. The body 2 defines a plane P containing a longitudinal direction X which corresponds to the length of the body 2 and, in the example shown, to its axis of symmetry. The ends of the body 2 respectively comprise a large sleeve 3 and a small sleeve 4. Each of the sleeves 3 and 4 defines a passage in the direction Z, perpendicular to the plane P of the body 2. The large sleeve 3 defines a passage of circular or oval section while the small sleeve 4 defines a passage of oval section.
Un grand insert 5 qui présente, en coupe transversale dans le plan définit par le corps 2, une section ovale, est monté dans une bague en caoutchouc 51. La section ovale de l'insert 5 s'étend selon la direction Y qui est perpendiculaire aux directions X et Z. La bague 51 présente donc une surface intérieure de section ovale adaptée pour entourer la surface externe de l'insert 5 et une surface externe de section circulaire afin de s'emboîter dans le passage de section circulaire du grand manchon 3. Un collier de fixation 52 permet de fixer l'ensemble bague+insert dans le passage du grand manchon 3, sans mouvement possible pour ce dernier, notamment selon l'axe Z du passage du grand manchon 3. Le collier de fixation 52 permet aussi de confiner le caoutchouc ou autre matériau constituant la grande bague 51, ce qui améliore l'endurance de la bielle. Le grand insert 5 comporte une ouverture non symétrique 73 qui permet d'orienter l'ensemble grande bague+grand insert lors de leur montage dans le corps 2 de la bielle 1. La présente invention n'est néanmoins pas limitée à ce type de réalisation pour le grand manchon et le grand insert. La bielle de l'invention peut également comprendre un grand insert et une grande bague insérés avec jeu dans le grand manchon, c'est-à-dire sans collier de fixation.A large insert 5 which, in cross section in the plane defined by the body 2, an oval section, is mounted in a rubber ring 51. The oval section of the insert 5 extends in the direction Y which is perpendicular The ring 51 thus has an inner surface of oval section adapted to surround the outer surface of the insert 5 and an outer surface of circular section to fit into the circular section passage of the large sleeve 3 A fastening collar 52 makes it possible to fix the ring + insert assembly in the passage of the large sleeve 3, without any possible movement for the latter, in particular along the Z axis of the passage of the large sleeve 3. The fastening collar 52 also allows to confine the rubber or other material constituting the large ring 51, which improves the endurance of the rod. The large insert 5 has a non-symmetrical opening 73 which makes it possible to orient the large ring + large insert assembly when they are mounted in the body 2 of the connecting rod 1. The present invention is nevertheless not limited to this type of embodiment. for the large sleeve and the large insert. The rod of the invention may also comprise a large insert and a large ring inserted with clearance in the large sleeve, that is to say without clamping collar.
Un petit insert 6 de section sensiblement ovale est inséré dans une petite bague 61 disposée dans le passage du petit manchon 4. Cette bague 61 présente donc une surface intérieure de section ovale adaptée pour venir en contact avec la surface externe du petit insert 6 et une surface externe de section ovale adaptée pour être insérée dans le passage de section ovale du petit manchon 4. Dans l'exemple représenté, la petite bague 61 est insérée en force et maintenue par les deux lèvres 71 et 72 (visibles sur la figure 3), dans le passage du petit manchon 4 mais selon un autre mode de réalisation non représenté, la petite bague est fixée dans le corps 2 au moyen d'un collier de fixation.A small insert 6 of substantially oval section is inserted in a small ring 61 disposed in the passage of the small sleeve 4. This ring 61 thus has an inner surface of oval section adapted to come into contact with the outer surface of the small insert 6 and a outer surface of oval section adapted to be inserted into the passage of oval section of the small sleeve 4. In the example shown, the small ring 61 is inserted in force and held by the two lips 71 and 72 (visible in Figure 3) in the passage of the small sleeve 4 but according to another embodiment not shown, the small ring is fixed in the body 2 by means of a fastening collar.
En référence à la figure 2, le petit insert 6, la petite bague 61 et le petit manchon 4 vont maintenant être décrits plus en détails. Les sections transversales du petit insert 6 et de la bague 61 dans le plan P du corps 2 sont sensiblement elliptiques. L'insert 6 forme une ellipse qui présente un petit axe AB et un grand axe CD. Comme représenté sur la figure 2, le grand axe CD est disposé sensiblement perpendiculairement à la direction longitudinale X. Ce sont les surfaces 62 et 63 en arc de cercle, situées de part et d'autre du petit axe AB, qui sont soumises aux efforts selon la direction Z. Ainsi, plus le rayon de courbure des surfaces en arc de cercle 62 et 63 est grand, plus ces surfaces sont grandes et plus les efforts sont repartis ce qui améliore l'endurance de la petite bague 61. Les extrémités de l'ellipse selon le grand axe CD sont coupées et comportent des échancrures 64 et 65 qui améliorent la fiabilité de la bielle. La Demanderesse a en effet constaté que les extrémités de l'ellipse sont moins soumises aux efforts. Le fait de les couper permet de réduire l'espace occupé par l' insert 6 tout en maximisant le rayon de courbure des surfaces qui travaillent 62 et 63.Referring to Figure 2, the small insert 6, the small ring 61 and the small sleeve 4 will now be described in more detail. The cross sections of the small insert 6 and the ring 61 in the plane P of the body 2 are substantially elliptical. The insert 6 forms an ellipse which has a small axis AB and a major axis CD. As shown in Figure 2, the major axis CD is disposed substantially perpendicular to the longitudinal direction X. These are the surfaces 62 and 63 in an arc, located on either side of the small axis AB, which are subjected to the forces according to the Z direction. Thus, the greater the radius of curvature of the arcuate surfaces 62 and 63, the larger these surfaces are and the more the forces are distributed which improves the endurance of the small ring 61. The ends of the Ellipse along the major axis CD are cut and have notches 64 and 65 which improve the reliability of the connecting rod. The Applicant has indeed found that the ends of the ellipse are less subject to efforts. Cutting them reduces the space occupied by the insert 6 while maximizing the radius of curvature of the working surfaces 62 and 63.
Toujours en référence à la figure 2, la bague 61 forme une ellipse de petit axe A'B' et de grand axe CD' qui prolongent respectivement le grand et petit axe de l'ellipse formée par l'insert 6. L'ellipse formée par la bague 61 est donc une homothétie de l'ellipse formée par l'insert 6. De ce fait, l'épaisseur e de la bague 61 au niveau des surfaces qui travaillent 62 et 63 est constante. Cette épaisseur e de caoutchouc ou similaire est comprimée entre l'insert 6 et le petit manchon 4 ce qui lui confère une plus grande raideur. La petite bague 61 résiste ainsi mieux aux contraintes auxquelles elle est soumise. L'ellipse formée par la surface externe de la bague 61 présente des extrémités coupées selon le grand axe CD' pour les mêmes raisons d'encombrement qu'expliquées précédemment, en référence au petit insert 6. Le petit insert 6 comporte une ouverture 70 qui permet d'orienter l'ensemble petite bague 61+ petit insert 6 lors de leur montage dans le corps 2 de la bielle 1.Still with reference to FIG. 2, the ring 61 forms an ellipse of small axis A'B 'and of major axis CD' which respectively extend the large and the minor axis of the ellipse formed by the insert 6. The formed ellipse by the ring 61 is a homothety of the ellipse formed by the insert 6. As a result, the thickness e of the ring 61 at the working surfaces 62 and 63 is constant. This thickness e of rubber or the like is compressed between the insert 6 and the small sleeve 4 which gives it a greater stiffness. The small ring 61 is thus more resistant to the stresses to which it is subjected. The ellipse formed by the outer surface of the ring 61 has cut ends along the major axis CD 'for the same reasons of bulk as explained above, with reference to the small insert 6. The small insert 6 has an opening 70 which allows to orient the assembly small ring 61+ small insert 6 during their assembly in the body 2 of the connecting rod 1.
Sur la figure 2, le petit manchon 4 comporte lui, un passage de section elliptique dans le plan du corps 2. Dans le cas présent la section du passage du petit manchon 4 est une ellipse qui est une homothétie des ellipses formées par la surface externe de l'insert 6 et la surface externe de la bague 61. L'invention ne se limite néanmoins pas à ce mode de réalisation et l'ellipse formée par la surface externe de la bague et le passage du petit manchon 4 peuvent ne pas être homothétiques. De même, la section de la surface externe de la petite bague 61 peut être circulaire ainsi que le passage défini par le petit manchon 4. La figure 3 représente une vue en perspective d'un mode particulier de réalisation de la petite bague 61. Sur la figure 3, la petite bague 61 est sensiblement cylindrique. Sa surface externe qui vient coopérer avec le petit manchon 4 comporte deux lèvres 71 et 72. Lors de l'insertion de l'ensemble bague+insert dans le passage du petit manchon 4, la lèvre inférieure 72 se déforment de manière à laisser passer la petite bague 61, contenant le petit insert 6. Lorsque le petit manchon 4 vient se loger dans l'espace située entre les lèvres 71 et 72, le petit insert 6 et la petite bague 61 sont montés dans le corps 2. Les lèvres 71 et 72 font office de butée et empêchent le déplacement de la petite bague 61 et du petit insert 6 selon l'axe Z du passage du petit manchon 4 tout en permettant un certain jeu de la petite bague 61.In FIG. 2, the small sleeve 4 has it, a passage of elliptical cross-section in the plane of the body 2. In this case the section of the passage of the small sleeve 4 is an ellipse which is a homothety of the ellipses formed by the external surface of the insert 6 and the outer surface of the ring 61. The invention is however not limited to this embodiment and the ellipse formed by the outer surface of the ring and the passage of the small sleeve 4 may not be homothetic. Similarly, the section of the outer surface of the small ring 61 may be circular as well as the passage defined by the small sleeve 4. 3 shows a perspective view of a particular embodiment of the small ring 61. In Figure 3, the small ring 61 is substantially cylindrical. Its outer surface which cooperates with the small sleeve 4 comprises two lips 71 and 72. When inserting the ring + insert assembly in the passage of the small sleeve 4, the lower lip 72 is deformed so as to let the small ring 61, containing the small insert 6. When the small sleeve 4 is housed in the space between the lips 71 and 72, the small insert 6 and the small ring 61 are mounted in the body 2. The lips 71 and 72 serve as a stop and prevent the movement of the small ring 61 and the small insert 6 along the Z axis of the passage of the small sleeve 4 while allowing a certain clearance of the small ring 61.
Dans l'exemple représenté, les sections du petit insert 6 et de la petite bague 61 sont elliptiques mais toute autre section présentant une grande dimension orientée selon une direction perpendiculaire à la direction longitudinale du corps peut également être utilisée. In the example shown, the sections of the small insert 6 and the small ring 61 are elliptical but any other section having a large dimension oriented in a direction perpendicular to the longitudinal direction of the body can also be used.

Claims

REVENDICATIONS
1. Bielle antivibratoire comprenant un corps allongé (2), sensiblement plat, définissant un plan (P) et une direction longitudinale (X) et qui relie entre eux un grand manchon d'extrémité (3) et un petit manchon d'extrémité (4) qui définissent respectivement un grand et un petit passage, selon une direction (Z) perpendiculaire audit plan et dans lesquels sont insérées respectivement une grande (51) et une petite bague (61) en matériau capable d'absorber les vibrations, chaque bague (51 ; 61) présentant une surface externe en contact avec lesdits manchons (3 ; 4) et une surface intérieure en contact avec la surface externe, respectivement, d'un grand et d'un petit insert (5 ; 6), caractérisée en ce que l'ensemble petite bague (61) - petit insert (6) est monté avec jeu dans ledit petit passage ou fixé par un collier de fixation entourant ladite petite bague (61) et en ce que ledit petit insert (6) et ladite surface intérieure de ladite petite bague (61) ont, dans ledit plan (P), une section sensiblement ovale dont la plus grande dimension (CD) s'étend dans une direction (Y) sensiblement perpendiculaire à ladite direction longitudinale (X).Antivibratory connecting rod comprising an elongate body (2), substantially flat, defining a plane (P) and a longitudinal direction (X) and which connects a large end sleeve (3) and a small end sleeve ( 4) which respectively define a large and a small passage, in a direction (Z) perpendicular to said plane and in which are respectively inserted a large (51) and a small ring (61) of material capable of absorbing vibrations, each ring (51; 61) having an outer surface in contact with said sleeves (3; 4) and an inner surface in contact with the outer surface, respectively, of a large and a small insert (5; 6), characterized in that that the small ring assembly (61) - small insert (6) is mounted with play in said small passage or fixed by a clamping collar surrounding said small ring (61) and in that said small insert (6) and said inner surface of said small ring (61) have, in said p lan (P), a substantially oval section whose largest dimension (CD) extends in a direction (Y) substantially perpendicular to said longitudinal direction (X).
2. Bielle antivibratoire selon la revendication 1, caractérisée en ce que ladite surface externe de ladite petite bague (61) et ledit passage dudit petit manchon (4) ont, dans ledit plan (P), une section sensiblement ovale dont la plus grande dimension (CD') s'étend dans une direction (Y) sensiblement perpendiculaire à ladite direction longitudinale (X).2. Antivibration rod according to claim 1, characterized in that said outer surface of said small ring (61) and said passage of said small sleeve (4) have, in said plane (P), a substantially oval section whose largest dimension (CD ') extends in a direction (Y) substantially perpendicular to said longitudinal direction (X).
3. Bielle anti vibratoire selon la revendication 1 ou 2, caractérisée en ce que ledit petit insert (6) et ladite surface intérieure de ladite petite bague (61) ont, dans ledit plan (P), une section sensiblement en forme d'ellipse dont le grand axe (CD) s'étend dans une direction (Y) sensiblement perpendiculaire à ladite direction longitudinale (X).3. Antivibration connecting rod according to claim 1 or 2, characterized in that said small insert (6) and said inner surface of said small ring (61) have, in said plane (P), a substantially elliptical section. whose major axis (CD) extends in a direction (Y) substantially perpendicular to said longitudinal direction (X).
4. Bielle antivibratoire selon la revendication 1 ou 2, caractérisée en ce que ladite surface externe de ladite petite bague (61) et ledit passage dudit petit manchon (4) ont, dans ledit plan (P), une section sensiblement en forme d'ellipse dont le grand axe (CD') s'étend dans une direction (Y) sensiblement perpendiculaire à ladite direction longitudinale (X). 4. Antivibration connecting rod according to claim 1 or 2, characterized in that said outer surface of said small ring (61) and said passage of said small sleeve (4) have, in said plane (P), a substantially shaped section. ellipse whose major axis (CD ') extends in a direction (Y) substantially perpendicular to said longitudinal direction (X).
5. Bielle anti vibratoire selon l'une quelconque des revendications 2 à 4, caractérisée en ce que l'épaisseur (e) d'au moins la portion de ladite petite bague (61) située entre ledit petit manchon (4) et ledit petit insert (6), de part et d'autre de la petite dimension de ladite section ovale est constante. 5. Antivibration connecting rod according to any one of claims 2 to 4, characterized in that the thickness (e) of at least the portion of said small ring (61) between said small sleeve (4) and said small insert (6), on either side of the small dimension of said oval section is constant.
6. Bielle antivibratoire selon la revendication 5, caractérisée en ce que ladite épaisseur est comprise entre lmm et 10mm.6. Antivibration shaft according to claim 5, characterized in that said thickness is between 1mm and 10mm.
7. Bielle selon l'une quelconque des revendications 1 à 6, caractérisée en ce que ladite section dudit petit insert (6) a une forme sensiblement ovale coupée au niveau d'au moins une des extrémités de ladite plus grande dimension (CD). 7. Rod according to any one of claims 1 to 6, characterized in that said section of said small insert (6) has a substantially oval shape cut at at least one end of said larger dimension (CD).
8. Bielle selon l'une quelconque des revendications 1 à 7, caractérisée en ce que ladite section de la surface externe de ladite petite bague (61) et/ou dudit passage dudit petit manchon (4) a une forme sensiblement ovale coupée au niveau d'au moins une des extrémités de ladite plus grande dimension (CD').8. Rod according to any one of claims 1 to 7, characterized in that said section of the outer surface of said small ring (61) and / or said passage of said small sleeve (4) has a substantially oval shape cut at the level at least one of the ends of said larger dimension (CD ').
9. Bielle selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'au moins la surface externe dudit grand insert (5) et la surface intérieure de ladite grande bague (51) ont, dans ledit plan (P) une section sensiblement ovale dont la plus grande dimension s'étend dans une direction (Y) sensiblement perpendiculaire à ladite direction longitudinale (X).9. Connecting rod according to any one of claims 1 to 8, characterized in that at least the outer surface of said large insert (5) and the inner surface of said large ring (51) have, in said plane (P) a substantially oval section whose largest dimension extends in a direction (Y) substantially perpendicular to said longitudinal direction (X).
10. Bielle selon l'une quelconque des revendications 1 à 9, caractérisée en ce que l'ensemble formé par ladite grande bague contenant ledit grand insert et/ou l'ensemble formé par ladite petite bague contenant ledit petit insert est fixé dans ledit corps par un collier de fixation. 10. Rod according to any one of claims 1 to 9, characterized in that the assembly formed by said large ring containing said large insert and / or the assembly formed by said small ring containing said small insert is fixed in said body by a clamp.
PCT/FR2006/051227 2005-12-19 2006-11-24 Torque reaction rod comprising a little insert of oval cross section WO2007071858A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0512906A FR2895040A1 (en) 2005-12-19 2005-12-19 TORQUE RETURN ROD COMPRISING A SMALL OVAL SECTION INSERT
FR0512906 2005-12-19

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WO2007071858A1 true WO2007071858A1 (en) 2007-06-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104163095A (en) * 2013-12-11 2014-11-26 柳州市兴拓工贸有限责任公司 Mounting method of engine suspension device for four-cylinder diesel engine

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Publication number Priority date Publication date Assignee Title
US2255820A (en) * 1937-07-12 1941-09-16 Schieferstein George Heinrich Oscillating mechanical system of the resonance type
US3467421A (en) * 1965-06-07 1969-09-16 Federal Mogul Corp Flex joint
FR2722259A1 (en) * 1994-07-08 1996-01-12 Hutchinson 1 IMPROVEMENTS IN CONNECTING RODS THAT CONNECT CERTAIN VEHICLE VIRBING ORGANS TO THE BODIES OF SUCH VEHICLES
EP1452750A2 (en) * 2003-02-27 2004-09-01 Hutchinson Antivibration connecting rod and method for manufacturing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2255820A (en) * 1937-07-12 1941-09-16 Schieferstein George Heinrich Oscillating mechanical system of the resonance type
US3467421A (en) * 1965-06-07 1969-09-16 Federal Mogul Corp Flex joint
FR2722259A1 (en) * 1994-07-08 1996-01-12 Hutchinson 1 IMPROVEMENTS IN CONNECTING RODS THAT CONNECT CERTAIN VEHICLE VIRBING ORGANS TO THE BODIES OF SUCH VEHICLES
EP1452750A2 (en) * 2003-02-27 2004-09-01 Hutchinson Antivibration connecting rod and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104163095A (en) * 2013-12-11 2014-11-26 柳州市兴拓工贸有限责任公司 Mounting method of engine suspension device for four-cylinder diesel engine

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