FR2715702A1 - Elastic joint for vehicle suspension - Google Patents

Elastic joint for vehicle suspension Download PDF

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Publication number
FR2715702A1
FR2715702A1 FR9401158A FR9401158A FR2715702A1 FR 2715702 A1 FR2715702 A1 FR 2715702A1 FR 9401158 A FR9401158 A FR 9401158A FR 9401158 A FR9401158 A FR 9401158A FR 2715702 A1 FR2715702 A1 FR 2715702A1
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FR
France
Prior art keywords
inner tube
wings
joint
yoke
rib
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.)
Granted
Application number
FR9401158A
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French (fr)
Other versions
FR2715702B1 (en
Inventor
Domer Michel
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.)
Hutchinson SA
Original Assignee
Hutchinson SA
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 Hutchinson SA filed Critical Hutchinson SA
Priority to FR9401158A priority Critical patent/FR2715702B1/en
Publication of FR2715702A1 publication Critical patent/FR2715702A1/en
Application granted granted Critical
Publication of FR2715702B1 publication Critical patent/FR2715702B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/005—Means to increase the friction-coefficient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/02—Attaching arms to sprung part of vehicle
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/44—Centering or positioning means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

The elastic joint comprises an elastic mass fixed by adhesion between an internal tube of the suspension and an external tube. The internal tube is destined to be compressed, by its ends, between the wings of the mounting cover. The ends of the internal tube (2) each carry a circular vein (6). The veins after being gripped in the joint between the wings (5) of the cover stop all relative radial sliding between the internal tube (2) and the cover.

Description

ARTICULATION ELASTIQUE, NOTAMMENT POUR TRIANGLE DE
SUSPENSION DE VEHICULE AUTOMOBILE
La présente invention concerne une articulation élastique, notamment pour triangle de suspension de véhicule automobile, du type comportant une masse de matière élastique fixée par adhérisation entre un tube intérieur et un tube extérieur, le tube intérieur étant destiné à être comprimé, par ses extrémités, entre les ailes d'une chape de montage.ELASTIC JOINT, PARTICULARLY FOR TRIANGLE OF
MOTOR VEHICLE SUSPENSION
The present invention relates to an elastic articulation, in particular for a suspension triangle of a motor vehicle, of the type comprising a mass of elastic material fixed by adhesion between an inner tube and an outer tube, the inner tube being intended to be compressed, by its ends, between the wings of a mounting yoke.

Dans ces articulations à chape, il est de plus en plus demandé par les constructeurs automobiles de garantir une absence de glissement des extrémités du tube intérieur sur la face intérieure des ailes de la chape de montage en cas d'effort radial important s'exerçant sur l'articulation, dû par exemple à un choc de la roue sur un trottoir, choc répercuté en particulier sur l'articulation du triangle inférieur de la suspension avant. In these clevis joints, it is more and more demanded by automobile manufacturers to guarantee that the ends of the inner tube do not slip on the inner face of the wings of the mounting clevis in the event of significant radial force exerted on the articulation, due for example to an impact of the wheel on a sidewalk, impact reflected in particular on the articulation of the lower triangle of the front suspension.

La solution la plus connue actuellement consiste à former des stries radiales 1 sur les deux extrémités du tube intérieur 2, comme ceci a été représenté sur les figures 1 et 2 du dessin ci-annexé. Ces stries 1 ont un effet d'antirotation sous l'action des sollicitations torsionnelles s'exerçant sur le tube intérieur 2, mais elles ne sont en réalité guère justifiées dans ce rôle, du fait de la faible raideur torsionnelle du caoutchouc 3, qui peut donc encaisser des déformations torsionnelles très importantes avant que lesdites stries radiales 1 ne soient beaucoup sollicitées dans la direction périphérique des extrémités dudit tube 2. Par contre, ces stries 1 n'ont pas un effet de blocage parfait en direction radiale, du fait de leur propre direction, car seules quelques-unes d'entre elles sont à un moment donné sensiblement perpendiculaires à la direction des efforts radiaux en question, les autres étant trop inclinées sur cette direction pour être efficaces, et quelques-unes étant même parallèles à cette direction. The most well-known solution at present consists in forming radial grooves 1 on the two ends of the inner tube 2, as has been shown in FIGS. 1 and 2 of the attached drawing. These streaks 1 have an anti-rotation effect under the action of the torsional stresses exerted on the inner tube 2, but they are in reality hardly justified in this role, due to the low torsional stiffness of the rubber 3, which can therefore take very large torsional deformations before said radial grooves 1 are much stressed in the peripheral direction of the ends of said tube 2. On the other hand, these grooves 1 do not have a perfect blocking effect in radial direction, because of their own direction, because only some of them are at a given time substantially perpendicular to the direction of the radial forces in question, the others being too inclined on this direction to be effective, and some being even parallel to this direction .

En outre, ce type de stries radiales 1 pose des problèmes de fabrication lors du surmoulage de l'élastomère intermédiaire 3, car elles sont génératrices de fuites de cette matière - constituant la partie active de la pièce vers l'alésage du tube intérieur 2, lequel doit être exempt de caoutchouc pour y permettre le montage de l'axe de la vis. In addition, this type of radial grooves 1 poses manufacturing problems during overmolding of the intermediate elastomer 3, because they generate leaks of this material - constituting the active part of the part towards the bore of the inner tube 2, which must be free of rubber to allow the mounting of the axis of the screw.

Le but de la présente invention est de remédier à ces inconvénients de la technique antérieure, et à cet effet, une articulation du type général défini plus haut est, conformément à l'invention, caractérisée en ce que lesdites extrémités du tube intérieur portent chacune au moins une nervure circulaire continue en saillie sur le plan de l'extrémité concernée, cette nervure, après serrage de l'articulation entre les ailes de la chape, mordant, du fait de sa dureté supérieure, dans la face intérieure de ces ailes, empêchant ainsi tout glissement radial relatif entre ledit tube intérieur et la chape. The object of the present invention is to remedy these drawbacks of the prior art, and for this purpose, a joint of the general type defined above is, in accordance with the invention, characterized in that said ends of the inner tube each carry the less a continuous circular rib projecting from the plane of the end concerned, this rib, after tightening the joint between the wings of the yoke, biting, due to its higher hardness, in the inner face of these wings, preventing thus any relative radial sliding between said inner tube and the yoke.

Ainsi, toutes les composantes radiales des efforts agissant sur le tube intérieur seront forcément perpendiculaires à un secteur donné de la nervure circulaire, qui aura donc l'effet antiglissement maximal vis-à-vis de ces efforts. Thus, all the radial components of the forces acting on the inner tube will necessarily be perpendicular to a given sector of the circular rib, which will therefore have the maximum anti-slip effect with respect to these forces.

On comprend aussi que l'étanchéité lors du surmoulage de l'élastomère sur le tube intérieur est parfaitement garantie de cette façon, car alors l'élastomère ne peut plus fuir entre l'extrémité du tube intérieur et la paroi du moule sur laquelle vient buter cette extrémité ; il en est empêché par la nervure antiglissement. It is also understood that the seal during overmolding of the elastomer on the inner tube is perfectly guaranteed in this way, because then the elastomer can no longer leak between the end of the inner tube and the wall of the mold on which abuts this end; it is prevented by the anti-slip rib.

Un autre avantage de l'invention réside dans le fait que l'on maîtrise mieux qu'auparavant la cote axiale finale spécifiée entre les plans des deux extrémités du tube intérieur, du fait de l'absence des stries radiales qui, dans l'art antérieur, s'étendent sur toute l'épaisseur du tube.  Another advantage of the invention lies in the fact that the final axial dimension specified between the planes of the two ends of the inner tube is better controlled than before, due to the absence of the radial grooves which, in the art anterior, extend over the entire thickness of the tube.

Enfin, l'étanchéité qui se manifeste lors du moulage est également intéressante en cours d'utilisation, car alors l'eau et la boue ne peuvent pénétrer dans le tube intérieur, en étant empêchées par la barrière continue que constituent la ou les nervure circulaires mordant dans les faces intérieures des ailes de la chape. Finally, the seal which manifests itself during molding is also advantageous during use, because then water and mud cannot penetrate into the inner tube, being prevented by the continuous barrier which constitute the circular rib (s). biting into the inner faces of the wings of the yoke.

Un mode d'exécution de l'invention est illustré aux figures 3 à 5 des dessins ci-annexés, dans lesquels, pour les parties semblables, on a utilisé les mêmes références que sur les figures 1 et 2. An embodiment of the invention is illustrated in FIGS. 3 to 5 of the appended drawings, in which, for similar parts, the same references have been used as in FIGS. 1 and 2.

La figure 3 est une vue en bout de l'articulation élastique ; la figure 4 est une vue en coupe axiale partielle de cette articulation ; et la figure 5 est une vue en coupe axiale partielle montrant seulement l'extrémité du tube intérieur 2 mordant dans la face intérieure de l'aile correspondante 5 de la chape dans laquelle l'articulation est montée (l'axe de montage traversant le tube intérieur 2 et les ailes 5 de la chape n'est représenté sur aucune des figures). Figure 3 is an end view of the elastic joint; Figure 4 is a partial axial sectional view of this joint; and Figure 5 is a partial axial sectional view showing only the end of the inner tube 2 biting into the inner face of the corresponding wing 5 of the yoke in which the joint is mounted (the mounting axis passing through the tube interior 2 and the wings 5 of the yoke is not shown in any of the figures).

Sur les trois figures précitées, la nervure circulaire continue qui caractérise l'invention est référencée 6. In the three above-mentioned figures, the continuous circular rib which characterizes the invention is referenced 6.

A titre d'exemple, sa hauteur peut être de l'ordre de 0,3 à 0,4 mm, et elle peut avoir une section triangulaire avec un angle au sommet de 90C ou environ, ces valeurs n'étant bien entendu pas limitatives.By way of example, its height may be of the order of 0.3 to 0.4 mm, and it may have a triangular section with an angle at the top of 90C or approximately, these values being of course not limiting .

Le tube intérieur 2 aura avantageusement subi un traitement de durcissement, par exemple une carbonitruration, de sorte qu'au moins ses extrémités soient plus dures que le métal constituant la chape.  The inner tube 2 will advantageously have undergone a hardening treatment, for example carbonitriding, so that at least its ends are harder than the metal constituting the screed.

Claims (4)

REVENDICATIONS 1. Articulation élastique, notamment pour triangle de suspension de véhicule automobile, du type comportant une masse de matière élastique fixée par adhérisation entre un tube intérieur et un tube extérieur, le tube intérieur étant destiné à être comprimé, par ses extrémités, entre les ailes d'une chape de montage, caractérisée en ce que lesdites extrémités du tube intérieur (2) portent chacune au moins une nervure circulaire (6) continue en saillie sur le plan de l'extrémité concernée, cette nervure, après serrage de l'articulation entre les ailes (5) de la chape, mordant, du fait de sa dureté supérieure, dans la face intérieure de ces ailes, empêchant ainsi tout glissement radial relatif entre ledit tube intérieur (2) et la chape. 1. Elastic joint, in particular for a suspension triangle of a motor vehicle, of the type comprising a mass of elastic material fixed by adhesion between an inner tube and an outer tube, the inner tube being intended to be compressed, by its ends, between the wings a mounting yoke, characterized in that said ends of the inner tube (2) each carry at least one continuous circular rib (6) projecting on the plane of the end concerned, this rib, after tightening of the joint between the wings (5) of the yoke, biting, due to its higher hardness, in the inner face of these wings, thus preventing any relative radial sliding between said inner tube (2) and the yoke. 2. Articulation selon la revendication 1, caractérisée en ce que la hauteur de la ou des nervures circulaires (6) est de l'ordre de 0,3 à 0,4 mm environ. 2. Joint according to claim 1, characterized in that the height of the circular rib (s) (6) is of the order of approximately 0.3 to 0.4 mm. 3. Articulation selon la revendication 1 ou 2, caractérisée en ce que la ou les nervures (6) ont une section triangulaire, avec un angle au sommet de 90" environ. 3. Joint according to claim 1 or 2, characterized in that the rib or ribs (6) have a triangular section, with an apex angle of approximately 90 ". 4. Articulation selon l'une quelconque des revendications précédentes, caractérisée en ce que le tube intérieur (2) a subi un traitement de durcissement pour qu'au moins ses extrémités soient plus dures que le métal constituant la chape.  4. Joint according to any one of the preceding claims, characterized in that the inner tube (2) has undergone a hardening treatment so that at least its ends are harder than the metal constituting the screed.
FR9401158A 1994-02-02 1994-02-02 Elastic joint, in particular for a suspension triangle for a motor vehicle. Expired - Fee Related FR2715702B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9401158A FR2715702B1 (en) 1994-02-02 1994-02-02 Elastic joint, in particular for a suspension triangle for a motor vehicle.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9401158A FR2715702B1 (en) 1994-02-02 1994-02-02 Elastic joint, in particular for a suspension triangle for a motor vehicle.

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FR2715702A1 true FR2715702A1 (en) 1995-08-04
FR2715702B1 FR2715702B1 (en) 1996-03-29

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188948A1 (en) * 2000-09-18 2002-03-20 Michelin Avs Elastic joint of a shock absorber and shock absorber with such a joint
FR2815391A1 (en) 2000-10-18 2002-04-19 C F Gomma Barre Thomas Rotary elastic coupling, to link two moving components, has an outer tubular fitting, and a core, with an elastic mass and an embedded stiffening insert between them to give a higher radial stiffness than the axial stiffness
FR2827931A1 (en) 2001-07-24 2003-01-31 C F Gomma Barre Thomas Flexible articulation for use between automobile bodywork and suspension comprises outer tubular armature and central core, flexible mass connecting outer armature and core
FR2865511A1 (en) * 2004-01-27 2005-07-29 Cf Gomma Spa Manufacturing procedure for elastic joint used e.g. in vehicle axle and suspension systems uses two concentric blocks of different elastic materials
FR2880933A1 (en) 2005-01-17 2006-07-21 Cf Gomma Spa Elastic movable units e.g. case, articulating device for e.g. automobile, has core mounted inside outer frame, and elastic mass with pairs of blocks, connecting frame and core, where one pair has shape of removable inserts with axial fit
US20100327499A1 (en) * 2009-06-29 2010-12-30 Tokai Rubber Industries, Ltd. Vibration damping rubber bushing
JP2011045915A (en) * 2009-08-28 2011-03-10 Tokai Rubber Ind Ltd Die for roll forming, method of manufacturing tubular metal fitting using it and method of manufacturing vibration proof rubber bush using tubular metal fitting
WO2017100452A1 (en) * 2015-12-10 2017-06-15 Hendrickson Usa, L.L.C. Pivotal connection for heavy-duty vehicle suspension assembly
CN117087367A (en) * 2023-10-18 2023-11-21 万向钱潮股份公司 Limiting structure for mounting vehicle suspension

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1200816A (en) * 1967-01-30 1970-08-05 Francois Durand Improvements in or relating to methods of assembling two members respectively of friable material and malleable material
FR2165467A5 (en) * 1971-12-16 1973-08-03 Barkas Werke Veb
DE3329967A1 (en) * 1983-08-19 1984-11-29 Daimler-Benz Ag, 7000 Stuttgart Screwed or riveted connection
DE3411812A1 (en) * 1983-08-19 1985-07-04 Daimler-Benz Ag, 7000 Stuttgart Screw connection
JPS61248930A (en) * 1985-04-25 1986-11-06 Yamashita Rubber Kk Bush and its production
JPH01122712A (en) * 1987-11-05 1989-05-16 Toyota Motor Corp Bushing assembly and method of attaching link having bushing assembly
US5145143A (en) * 1990-09-10 1992-09-08 Steel Parts Corporation Vibration damper

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1200816A (en) * 1967-01-30 1970-08-05 Francois Durand Improvements in or relating to methods of assembling two members respectively of friable material and malleable material
FR2165467A5 (en) * 1971-12-16 1973-08-03 Barkas Werke Veb
DE3329967A1 (en) * 1983-08-19 1984-11-29 Daimler-Benz Ag, 7000 Stuttgart Screwed or riveted connection
DE3411812A1 (en) * 1983-08-19 1985-07-04 Daimler-Benz Ag, 7000 Stuttgart Screw connection
JPS61248930A (en) * 1985-04-25 1986-11-06 Yamashita Rubber Kk Bush and its production
JPH01122712A (en) * 1987-11-05 1989-05-16 Toyota Motor Corp Bushing assembly and method of attaching link having bushing assembly
US5145143A (en) * 1990-09-10 1992-09-08 Steel Parts Corporation Vibration damper

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 98 (M - 575) 27 March 1987 (1987-03-27) *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 365 (M - 859) 15 August 1989 (1989-08-15) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188948A1 (en) * 2000-09-18 2002-03-20 Michelin Avs Elastic joint of a shock absorber and shock absorber with such a joint
FR2814211A1 (en) * 2000-09-18 2002-03-22 Michelin Avs ELASTIC SHOCK ABSORBER AND SHOCK ABSORBER PROVIDED WITH SUCH AN ELASTIC ARTICULATION
FR2815391A1 (en) 2000-10-18 2002-04-19 C F Gomma Barre Thomas Rotary elastic coupling, to link two moving components, has an outer tubular fitting, and a core, with an elastic mass and an embedded stiffening insert between them to give a higher radial stiffness than the axial stiffness
FR2827931A1 (en) 2001-07-24 2003-01-31 C F Gomma Barre Thomas Flexible articulation for use between automobile bodywork and suspension comprises outer tubular armature and central core, flexible mass connecting outer armature and core
FR2865511A1 (en) * 2004-01-27 2005-07-29 Cf Gomma Spa Manufacturing procedure for elastic joint used e.g. in vehicle axle and suspension systems uses two concentric blocks of different elastic materials
EP1568912A1 (en) * 2004-01-27 2005-08-31 CF Gomma Spa Production method for a bushing comprising differing elastic blocs
FR2880933A1 (en) 2005-01-17 2006-07-21 Cf Gomma Spa Elastic movable units e.g. case, articulating device for e.g. automobile, has core mounted inside outer frame, and elastic mass with pairs of blocks, connecting frame and core, where one pair has shape of removable inserts with axial fit
US20100327499A1 (en) * 2009-06-29 2010-12-30 Tokai Rubber Industries, Ltd. Vibration damping rubber bushing
US8465010B2 (en) * 2009-06-29 2013-06-18 Tokai Rubber Industries, Ltd. Vibration damping rubber bushing
JP2011045915A (en) * 2009-08-28 2011-03-10 Tokai Rubber Ind Ltd Die for roll forming, method of manufacturing tubular metal fitting using it and method of manufacturing vibration proof rubber bush using tubular metal fitting
WO2017100452A1 (en) * 2015-12-10 2017-06-15 Hendrickson Usa, L.L.C. Pivotal connection for heavy-duty vehicle suspension assembly
US10017020B2 (en) 2015-12-10 2018-07-10 Hendrickson Usa, L.L.C. Pivotal connection for heavy-duty vehicle suspension assembly
CN117087367A (en) * 2023-10-18 2023-11-21 万向钱潮股份公司 Limiting structure for mounting vehicle suspension

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Effective date: 20051031