WO2010136726A1 - Bump stop and suspension strut including one such bump stop - Google Patents

Bump stop and suspension strut including one such bump stop Download PDF

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Publication number
WO2010136726A1
WO2010136726A1 PCT/FR2010/051020 FR2010051020W WO2010136726A1 WO 2010136726 A1 WO2010136726 A1 WO 2010136726A1 FR 2010051020 W FR2010051020 W FR 2010051020W WO 2010136726 A1 WO2010136726 A1 WO 2010136726A1
Authority
WO
WIPO (PCT)
Prior art keywords
finger
operating member
suspension
stop
suspension stop
Prior art date
Application number
PCT/FR2010/051020
Other languages
French (fr)
Inventor
Julien Tixier
Original Assignee
Peugeot Citroën Automobiles 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 Peugeot Citroën Automobiles SA filed Critical Peugeot Citroën Automobiles SA
Publication of WO2010136726A1 publication Critical patent/WO2010136726A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/001—Arrangements for attachment of dampers
    • B60G13/003—Arrangements for attachment of dampers characterised by the mounting on the vehicle body or chassis of the damper unit
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3271—Assembly or repair
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/54—Arrangements for attachment
    • 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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/128—Damper mount on vehicle body or chassis
    • 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
    • B60G2204/4404—Retainers for holding a fixing element, e.g. bushing, nut, bolt etc., until it is tightly fixed in position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/90—Maintenance
    • B60G2206/91—Assembly procedures

Definitions

  • the present invention relates to a vehicle, in particular a motor vehicle, comprising a structural element having an opening, a wheel damper, a suspension stop secured to the upper end of the damper, said abutment comprising a bearing shoulder. against the lower surface of the structural element, around the periphery of said opening, and a flange extending above the shoulder penetrating the opening and protruding above the upper surface of the structural element said flange having fastening means cooperating with the shoulder to maintain the abutment on the structural member.
  • Such a suspension stop must have sufficiently rigid blades to ensure good retention over time and flexible enough for, during assembly, that the blades can bend without breaking, requiring large blades. dimensions thus limiting the angular deformation during assembly. But in the case of vehicles with a very advanced windshield above the front shock absorbers, the low height available related to the height of the blades makes accessibility to the nut, allowing the upper attachment of the damper on the stop of suspension, virtually impossible, which can be a problem for the replacement of shock absorbers.
  • the invention therefore relates to a vehicle, in particular a motor vehicle, comprising a structural element having an opening, a wheel damper, a suspension stopper serving as a support for the upper end of the damper, said stop comprising a shoulder bearing against the lower surface of the structural element, around said opening, and a flange extending above the shoulder, penetrating into the opening and projecting above the upper surface of the structural element, said flange comprising fastening means, cooperating with the shoulder, to maintain the abutment on the structural element, said fastening means comprise at least one locking finger movable between a first retracted position allowing passing the collar through the opening and a second extended position forming an upper bearing surface on the surface of the lement structure, and an operating member adapted to operate the movement of the finger from the retracted position to the deployed position.
  • the operating member and the finger can move in two perpendicular directions, moving along a substantially vertical axis of the operating member, creating a displacement in a substantially horizontal plane of the finger.
  • the invention also relates to a suspension stop for fixing a suspension element on the structure of a vehicle, comprising at least one movable locking pin between a first retracted position and a second deployed position and a suitable operating member to move the finger from the retracted position to the deployed position.
  • the operating member and the finger can move in two perpendicular directions, the displacement along a substantially vertical axis of the operating member, along a collar, creating a displacement in a substantially horizontal plane of the finger.
  • the suspension abutment comprises elastic means that force the finger against the operating member.
  • the elastic means consist of an annular spring, circling the collar, positioned in a groove in the finger.
  • the operating member comes to hang on the collar when it acts on the finger and force the latter in the deployed position.
  • the operating member is formed of a cylindrical ring having a beveled end.
  • the finger has a beveled end which is positioned opposite the beveled end of the operating member, the beveled end of the operating member cooperating with the beveled end of the finger to force the movement of the finger in the deployed position when the operating member comes to lock in translation along the collar.
  • the flange comprises an inner wall and an outer wall, the operating member is partially positioned between these two walls and can have a first stable position leaving the finger in the retracted position and a second locked position forcing the latter in the deployed position.
  • the suspension stop may comprise several fingers positioned in openings in the outer wall of said collar.
  • the invention finally relates to a wheel damper comprising a suspension stop for a vehicle having at least one of the preceding characteristics.
  • FIG. 1 which shows a partial sectional view of a vehicle suspension comprising a damper fixed on the body according to the invention
  • FIG. 2 and 3 which show a sectional view of an abutment according to the invention, in a first position not fixed to the vehicle structure and in a second position fixed to the structure.
  • FIG. 1 represents a suspension of a motor vehicle comprising a suspension damper 1 fixed to a body 2 of a vehicle by means of a suspension stop 3 according to the invention.
  • the suspension damper 1 is connected at its lower end to the hub carrier of a vehicle wheel (not shown) and at its upper end to the body 2 of the vehicle by an upper attachment 1 according to the invention.
  • the damper 1 comprises a body 10 and a rod 11 displaceable in translation inside the body 10.
  • the rod 11 of the damper 1 is extended by an upper attachment 12, which is a threaded rod of a diameter lower than the rod 11 and now the upper portion 12 of the damper 1 attached to the suspension stop 3 by a nut 13.
  • the rod 11 is protected by a bellows 4, surrounding it concentrically and extending partially around the body 10
  • the damper 1 advantageously comprises a limit stop 5 intended to damp the shocks in the compression phase of the damper 1; said stopper 5 being mounted concentrically around the rod 11 of the damper 1, inside the bellows 4, between the suspension stopper 3 and the upper end of the damper body 1.
  • the suspension also comprises a helical spring 6 concentrically mounted around the body 10 of the damper 1.
  • the spring 6 has an upper turn resting on the suspension stop 3, and a lower turn resting on a cup (not shown) secured to of the body 10 of the shock absorber 1.
  • Figures 2 and 3 show a sectional view of the suspension stop 3 positioned in an opening 21 of the structure 2 of the vehicle, respectively, in a first position not fixed to the vehicle structure 2 and in a second position fixed to the structure as explained later.
  • the suspension abutment 3 comprises a rubber mount 31, forming the intermediate portion of the abutment 3, comprising a shoulder 32 serving to support the lower surface of the structural element 2, around the opening 21.
  • a collar 33 constituting the upper part of the stop 3, extends upwards through the opening 21, the rubber mount 31.
  • a bearing 34 positioned in the lower part of the stop 3, serving as a support for the spring 6, is connected to the silent block 31 by a ball bearing 7.
  • the silentblock 31 consists of a first metal cup 31a, serving to support the ball bearing 7, and a second metal cup 31b, forming the shoulder 32. Between these two cups is interposed a flexible elastic material 31c such as rubber.
  • the silent block 31 is traversed at its center by an opening allowing the passage of the upper attachment 12 of the damper 1, the rod 11 bearing against the first cup 31 a.
  • the second cup 31b is extended upwards by a smaller silentblock 36 surrounding the upper attachment 12 and serving as support for the nut 13.
  • the damper thus fixed between the two silentblocs 31c and 36 to the suspension stopper 3, isolates the body 2 of the vehicle vibrations from the wheel and transmitted by the damper 1. It is the same spring 6 attached to the bearing 34 which is connected to the body 2 of the vehicle via the silentbloc 31 c.
  • the flange 33 is in a cylindrical shape with an outer wall 33a whose outer diameter is adapted to pass through the opening 21 and an inner wall 33b whose inner diameter allows the introduction of a tool for mounting and dismantling of the nut 13. Between these two walls is left empty a spacing allowing the introduction of a cylindrical actuating member 8.
  • the locking fingers 9, positioned at the base of the collar 33, can extend radially through openings made at the base of the outer wall 33a under the action of the operating member 8; the operating member 8 and the fingers 9 have, respectively, a beveled end 82 and 91, these beveled ends being opposite one of the other and cooperating to force the displacement in the deployed position of the fingers 9 when the operating member 8 is moved downwards, locking the stopper 3 on the structure 2.
  • grooves 92 formed on the lower surface of the fingers 9 allow to accommodating an annular spring 93 acting as a return spring holding the fingers 9 arranged in the collar 33 in the absence of stress on the part of the operating member 8.
  • the operating member 8 has two stable positions, a first position, said high position, not acting on the fingers 9, allowing the positioning of the stop assembly 3 and damper 1 on the structure 2 and, a second position, said low position, moving the fingers 9 in the deployed position, locking the stopper 3 in position in the opening 21 of the structure 2. These two positions are maintained by means of a circular clip 81 positioned on the outer lateral surface of the operating member 8, penetrating alternately in an upper circular groove 35a and in a lower circular groove 35b.
  • the upper groove 35a formed on the inner surface of the outer wall 33a, near the upper end of this wall 33a, positions the operating member 8 in its upper position, leaving the fingers 9 in the retracted position.
  • the lower groove 35b positioned below the upper groove 35a, immobilizes the operating member 8 in its lower position, moving the fingers 9 in the deployed position.
  • the fir-shaped profile of the clip 81 and the grooves 35a and 35b do not allow the operating member 8 to go back from the low position to the high position, thus avoiding the accidental disconnection of the abutment 3 on the structure 2.
  • the disassembly of the damper 1 for a possible replacement is done by the nut 13.
  • the fingers 9 must be broken, imposing the mounting of a stop 3 new.
  • Another embodiment consists of using the conical caps both to facilitate the mounting of the flanges 33 in the openings 21 of the structure 2 and as an operating member, keeping the fingers 9 in the retracted position.
  • the spring 92 pushes the fingers 9 in the deployed position; removing the caps releasing the fingers 9, which causes the automatic locking of the suspension stops 3 on the vehicle structure 2.
  • pins protruding from the contact surface with the structure 2 of the vehicle can penetrate into corresponding openings in the structure 2 to form keying means, and thus allow to guide the positioning of the suspension stop in the opening 21 of the structure 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The present invention relates to a vehicle, in particular an automobile, including a structural element (2) having an opening (21), a wheel shock absorber (1), a bump stop (3) supporting the upper end (12) of the shock absorber (1), said bump stop comprising a shoulder (32) bearing against the lower surface of the structural element about said opening (21), and a collar (33) extending above the shoulder (32), penetrating the opening (21) and projecting beyond the upper surface of the structural element (2), said collar (33) comprising attachment means engaging with the shoulder (32) for retaining the bump stop (3) on the structural element (2), said attachment means comprising at least one locking lug (9) that is mobile between a first retracted position enabling the collar (33) to pass through the opening and a second deployed position forming an upper bearing surface on the surface of the structural element (2), and a control member (8) for moving the lug (9) from the retracted position into the deployed position.

Description

BUTEE DE SUSPENSION ET JAMBE DE SUSPENSION POURVUE D ' STOPPER OF SUSPENSION AND SUSPENSION LEG PROVIDED WITH
UNETELLEBUTEEUNETELLEBUTEE
La présente invention se rapporte à un véhicule, notamment un véhicule automobile, comprenant un élément de structure présentant une ouverture, un amortisseur de roue, une butée de suspension solidarisée à l'extrémité supérieure de l'amortisseur, ladite butée comportant un épaulement en appui contre la surface inférieure de l'élément de structure, sur le pourtour de ladite ouverture, et une collerette s'étendant au dessus de l'épaulement pénétrant dans l'ouverture et faisant saillie au dessus de la surface supérieure de l'élément de structure, ladite collerette comportant des moyens de fixation, coopérant avec l'épaulement, pour assurer le maintien de la butée sur l'élément de structure.The present invention relates to a vehicle, in particular a motor vehicle, comprising a structural element having an opening, a wheel damper, a suspension stop secured to the upper end of the damper, said abutment comprising a bearing shoulder. against the lower surface of the structural element, around the periphery of said opening, and a flange extending above the shoulder penetrating the opening and protruding above the upper surface of the structural element said flange having fastening means cooperating with the shoulder to maintain the abutment on the structural member.
Dans l'état de la technique, parmi les fixations supérieures d'amortisseurs existantes, il est par exemple connu l'enseignement du document FR 2 919 909. Ce document décrit une butée de suspension solidaire de l'extrémité supérieure de la tige de l'amortisseur, comportant, dans sa partie supérieure, des lames élastiquement déformables. Lors du montage de l'amortisseur, la partie supérieure de la butée est introduite dans une ouverture spécialement ménagée dans la structure du véhicule,. L'introduction de la butée dans l'ouverture a pour effet de déformer les lames axialement ; ces lames retrouvant leur position d'origine une fois en position, assurant ainsi le maintien de l'amortisseur sur la structure du véhicule.In the state of the art, among the upper fasteners of existing dampers, it is for example known teaching the document FR 2 919 909. This document describes a suspension stop secured to the upper end of the rod of the damper, comprising, in its upper part, elastically deformable blades. When mounting the damper, the upper part of the abutment is introduced into an opening specially formed in the vehicle structure. The introduction of the abutment in the opening has the effect of deforming the blades axially; these blades returning to their original position once in position, thus ensuring the maintenance of the damper on the vehicle structure.
Une telle butée de suspension doit comporter des lames suffisamment rigides pour s'assurer du bon maintien dans le temps et suffisamment souple pour, lors du montage, que les lames puissent se plier sans risquer de se casser, imposant d'avoir des lames de grandes dimensions limitant ainsi la déformation angulaire lors du montage. Mais dans le cas de véhicules présentant un pare brise très avancé au-dessus des amortisseurs avant, la faible hauteur disponible liée à la hauteur des lames rend l'accessibilité à l'écrou, permettant la fixation supérieure de l'amortisseur sur la butée de suspension, pratiquement impossible, ce qui peut poser problème pour le remplacement des amortisseurs.Such a suspension stop must have sufficiently rigid blades to ensure good retention over time and flexible enough for, during assembly, that the blades can bend without breaking, requiring large blades. dimensions thus limiting the angular deformation during assembly. But in the case of vehicles with a very advanced windshield above the front shock absorbers, the low height available related to the height of the blades makes accessibility to the nut, allowing the upper attachment of the damper on the stop of suspension, virtually impossible, which can be a problem for the replacement of shock absorbers.
L'invention a donc pour objet un véhicule, notamment un véhicule automobile, comprenant un élément de structure présentant une ouverture, un amortisseur de roue, une butée de suspension servant de support à l'extrémité supérieure de l'amortisseur, ladite butée comportant un épaulement en appui contre la surface inférieure de l'élément de structure, en pourtour de ladite ouverture, et une collerette s'étendant au dessus de l'épaulement, pénétrant dans l'ouverture et faisant saillie au dessus de la surface supérieure de l'élément de structure, ladite collerette comportant des moyens de fixation, coopérant avec l'épaulement, pour assurer le maintien de la butée sur l'élément de structure, lesdits moyens de fixation comportent au moins un doigt de verrouillage mobile entre une première position rétractée permettant le passage de la collerette à travers l'ouverture et une seconde position déployée formant une surface d'appui supérieure sur la surface de l'élément de structure, et un organe de manœuvre adapté pour opérer le déplacement du doigt de la position rétractée vers la position déployée. L'organe de manœuvre et le doigt pouvant se déplacer suivant deux directions perpendiculaires, le déplacement suivant un axe sensiblement vertical de l'organe de manœuvre, créant un déplacement dans un plan sensiblement horizontal du doigt. La butée de suspension comporte des moyens élastiques qui forcent le doigt à rencontre de l'organe de manœuvre.The invention therefore relates to a vehicle, in particular a motor vehicle, comprising a structural element having an opening, a wheel damper, a suspension stopper serving as a support for the upper end of the damper, said stop comprising a shoulder bearing against the lower surface of the structural element, around said opening, and a flange extending above the shoulder, penetrating into the opening and projecting above the upper surface of the structural element, said flange comprising fastening means, cooperating with the shoulder, to maintain the abutment on the structural element, said fastening means comprise at least one locking finger movable between a first retracted position allowing passing the collar through the opening and a second extended position forming an upper bearing surface on the surface of the lement structure, and an operating member adapted to operate the movement of the finger from the retracted position to the deployed position. The operating member and the finger can move in two perpendicular directions, moving along a substantially vertical axis of the operating member, creating a displacement in a substantially horizontal plane of the finger. The suspension abutment comprises elastic means that force the finger against the operating member.
L'invention a également pour objet une butée de suspension destinée à fixer un élément de suspension sur la structure d'un véhicule, comportant au moins un doigt de verrouillage mobile entre une première position rétractée et une seconde position déployée et un organe de manœuvre adapté pour opérer le déplacement du doigt de la position rétractée vers la position déployée. L'organe de manœuvre et le doigt pouvant se déplacer suivant deux directions perpendiculaires, le déplacement suivant un axe sensiblement vertical de l'organe de manœuvre, le long d'une collerette, créant un déplacement dans un plan sensiblement horizontal du doigt. La butée de suspension comporte des moyens élastiques qui forcent le doigt à rencontre de l'organe de manœuvre.The invention also relates to a suspension stop for fixing a suspension element on the structure of a vehicle, comprising at least one movable locking pin between a first retracted position and a second deployed position and a suitable operating member to move the finger from the retracted position to the deployed position. The operating member and the finger can move in two perpendicular directions, the displacement along a substantially vertical axis of the operating member, along a collar, creating a displacement in a substantially horizontal plane of the finger. The suspension abutment comprises elastic means that force the finger against the operating member.
Les moyens élastiques sont constitués d'un ressort annulaire, faisant le tour de la collerette, positionné dans une gorge ménagée dans le doigt.The elastic means consist of an annular spring, circling the collar, positioned in a groove in the finger.
L'organe de manœuvre vient se bloquer sur la collerette lorsqu'il agit sur le doigt et forcer ce dernier en position déployée. L'organe de manœuvre est formé d'une bague cylindrique présentant une extrémité biseautée. Le doigt comporte une extrémité biseautée qui est positionnée en regard de l'extrémité biseautée de l'organe de manœuvre, l'extrémité biseautée de l'organe de manœuvre coopérant avec l'extrémité biseautée du doigt pour forcer le déplacement du doigt en position déployée lorsque l'organe de manœuvre vient se bloquer en translation le long de la collerette.The operating member comes to hang on the collar when it acts on the finger and force the latter in the deployed position. The operating member is formed of a cylindrical ring having a beveled end. The finger has a beveled end which is positioned opposite the beveled end of the operating member, the beveled end of the operating member cooperating with the beveled end of the finger to force the movement of the finger in the deployed position when the operating member comes to lock in translation along the collar.
La collerette comporte une paroi intérieure et une paroi extérieure, l'organe de manœuvre est partiellement positionné entre ces deux parois et peut présenter une première position stable laissant le doigt en position rétractée et une seconde position bloquée forçant ce dernier en position déployée. La butée de suspension peut comporter plusieurs doigts positionnés dans des ouvertures pratiquées dans la paroi extérieure de ladite collerette.The flange comprises an inner wall and an outer wall, the operating member is partially positioned between these two walls and can have a first stable position leaving the finger in the retracted position and a second locked position forcing the latter in the deployed position. The suspension stop may comprise several fingers positioned in openings in the outer wall of said collar.
L'invention concerne enfin un amortisseur de roue comportant une butée de suspension pour un véhicule présentant au moins une des caractéristiques précédentes.The invention finally relates to a wheel damper comprising a suspension stop for a vehicle having at least one of the preceding characteristics.
D'autres avantages et caractéristiques techniques de la présente invention apparaîtront plus clairement à la lumière de la description qui suit en référence aux figures des dessins annexés parmi lesquelles :Other advantages and technical characteristics of the present invention will emerge more clearly in the light of the description which follows with reference to the figures of the appended drawings in which:
- la figure 1 qui représente une vue partiellement, en coupe, d'une suspension de véhicule comportant un amortisseur fixé sur la caisse conformément à l'invention; - les figures 2 et 3 qui représentent une vue en coupe d'une butée selon l'invention, dans une première position non fixée à la structure du véhicule et dans une seconde position fixée à la structure.- Figure 1 which shows a partial sectional view of a vehicle suspension comprising a damper fixed on the body according to the invention; - Figures 2 and 3 which show a sectional view of an abutment according to the invention, in a first position not fixed to the vehicle structure and in a second position fixed to the structure.
La figure 1 représente une suspension de véhicule automobile comprenant un amortisseur de suspension 1 fixé à une caisse 2 d'un véhicule au moyen d'une butée de suspension 3 suivant l'invention.FIG. 1 represents a suspension of a motor vehicle comprising a suspension damper 1 fixed to a body 2 of a vehicle by means of a suspension stop 3 according to the invention.
L'amortisseur de suspension 1 est relié par son extrémité inférieure au porte moyeu d'une roue du véhicule (non représenté) et par son extrémité supérieure à la caisse 2 du véhicule par une fixation supérieure 1 conforme à l'invention. L'amortisseur 1 comporte un corps 10 et une tige 11 déplaçable en translation à l'intérieur de ce corps 10. La tige 11 de l'amortisseur 1 se prolonge par une fixation supérieure 12, se présentant comme une tige filetée d'un diamètre inférieur à la tige 11 et maintenant la partie supérieure 12 de l'amortisseur 1 fixée à la butée de suspension 3 par un écrou 13. La tige 11 est protégée par un soufflet 4, l'entourant concentriquement et se prolongeant partiellement autour du corps 10 de l'amortisseur 1. L'amortisseur 1 comporte avantageusement une butée de fin de course 5 destinée à amortir les chocs en phase de compression de l'amortisseur 1 ; ladite butée 5 étant montée concentriquement autour de la tige 11 de l'amortisseur 1 , à l'intérieur du soufflet 4, entre la butée de suspension 3 et l'extrémité supérieure du corps 10 d'amortisseur 1.The suspension damper 1 is connected at its lower end to the hub carrier of a vehicle wheel (not shown) and at its upper end to the body 2 of the vehicle by an upper attachment 1 according to the invention. The damper 1 comprises a body 10 and a rod 11 displaceable in translation inside the body 10. The rod 11 of the damper 1 is extended by an upper attachment 12, which is a threaded rod of a diameter lower than the rod 11 and now the upper portion 12 of the damper 1 attached to the suspension stop 3 by a nut 13. The rod 11 is protected by a bellows 4, surrounding it concentrically and extending partially around the body 10 The damper 1 advantageously comprises a limit stop 5 intended to damp the shocks in the compression phase of the damper 1; said stopper 5 being mounted concentrically around the rod 11 of the damper 1, inside the bellows 4, between the suspension stopper 3 and the upper end of the damper body 1.
La suspension comporte également un ressort 6 hélicoïdal monté concentriquement autour du corps 10 de l'amortisseur 1. Le ressort 6 présente une spire supérieure en appui sur la butée de suspension 3, et une spire inférieure en appui sur une coupelle (non représentée) solidaire du corps 10 de l'amortisseur 1.The suspension also comprises a helical spring 6 concentrically mounted around the body 10 of the damper 1. The spring 6 has an upper turn resting on the suspension stop 3, and a lower turn resting on a cup (not shown) secured to of the body 10 of the shock absorber 1.
Les figures 2 et 3 montrent une vue en coupe de la butée de suspension 3 positionnée dans une ouverture 21 de la structure 2 du véhicule, respectivement, dans une première position non fixée à la structure du véhicule 2 et dans une seconde position fixée à la structure comme expliqué ultérieurement. La butée de suspension 3 comporte un silentbloc 31 , formant la partie intermédiaire de la butée 3, comportant un épaulement 32 servant d'appui à la surface inférieure de l'élément de structure 2, en pourtour de l'ouverture 21. Une collerette 33, constituant la partie supérieure de la butée 3, prolonge vers le haut, à travers l'ouverture 21 , le silentbloc 31. Un palier 34, positionné en partie inférieure de la butée 3, servant de support au ressort 6, est relié au silentbloc 31 par un roulement à billes 7.Figures 2 and 3 show a sectional view of the suspension stop 3 positioned in an opening 21 of the structure 2 of the vehicle, respectively, in a first position not fixed to the vehicle structure 2 and in a second position fixed to the structure as explained later. The suspension abutment 3 comprises a rubber mount 31, forming the intermediate portion of the abutment 3, comprising a shoulder 32 serving to support the lower surface of the structural element 2, around the opening 21. A collar 33 , constituting the upper part of the stop 3, extends upwards through the opening 21, the rubber mount 31. A bearing 34, positioned in the lower part of the stop 3, serving as a support for the spring 6, is connected to the silent block 31 by a ball bearing 7.
Le silentbloc 31 est constitué d'une première coupelle métallique 31 a, servant de support au roulement à billes 7, et d'une seconde coupelle métallique 31 b, formant l'épaulement 32. Entre ces deux coupelles est interposé un matériau élastique souple 31c tel que du caoutchouc. Le silentbloc 31 est traversé en son centre par une ouverture permettant le passage de la fixation supérieure 12 de l'amortisseur 1 , la tige 11 venant en appui contre la première coupelle 31 a. La seconde coupelle 31 b est prolongée vers le haut par un plus petit silentbloc 36 entourant la fixation supérieure 12 et servant d'appui à l'écrou 13. L'amortisseur ainsi fixé entre les deux silentblocs 31 c et 36 à la butée de suspension 3, isole la caisse 2 du véhicule des vibrations provenant de la roue et transmises par l'amortisseur 1. Il en va de même du ressort 6 fixé sur le palier 34 qui est lié à la caisse 2 du véhicule par l'intermédiaire du silentbloc 31 c.The silentblock 31 consists of a first metal cup 31a, serving to support the ball bearing 7, and a second metal cup 31b, forming the shoulder 32. Between these two cups is interposed a flexible elastic material 31c such as rubber. The silent block 31 is traversed at its center by an opening allowing the passage of the upper attachment 12 of the damper 1, the rod 11 bearing against the first cup 31 a. The second cup 31b is extended upwards by a smaller silentblock 36 surrounding the upper attachment 12 and serving as support for the nut 13. The damper thus fixed between the two silentblocs 31c and 36 to the suspension stopper 3, isolates the body 2 of the vehicle vibrations from the wheel and transmitted by the damper 1. It is the same spring 6 attached to the bearing 34 which is connected to the body 2 of the vehicle via the silentbloc 31 c.
La collerette 33 se présente sous une forme cylindrique avec une paroi extérieure 33a dont le diamètre extérieur est adapté pour traverser l'ouverture 21 et une paroi intérieure 33b dont le diamètre intérieur permet l'introduction d'un outil permettant le montage et le démontage de l'écrou 13. Entre ces deux parois est laissé vide un espacement permettant l'introduction d'un organe de manœuvre cylindrique 8. Des doigts de verrouillage 9, positionnés à la base de la collerette 33, peuvent s'étendre radialement à travers des ouvertures pratiquées à la base de la paroi extérieure 33a sous l'action de l'organe de manœuvre 8 ; l'organe de manœuvre 8 et les doigts 9 présentent, respectivement, une extrémité biseautée 82 et 91 , ces extrémités biseautées étant en regard l'une de l'autre et coopérant pour forcer le déplacement en position déployée des doigts 9 lorsque l'organe de manœuvre 8 est déplacé vers le bas, verrouillant la butée 3 sur la structure 2. Des gorges 92 ménagées sur la surface inférieure des doigts 9 permettent de loger un ressort annulaire 93 agissant comme un ressort de rappel maintenant les doigts 9 rangés dans la collerette 33 en l'absence de contrainte de la part de l'organe de manœuvre 8.The flange 33 is in a cylindrical shape with an outer wall 33a whose outer diameter is adapted to pass through the opening 21 and an inner wall 33b whose inner diameter allows the introduction of a tool for mounting and dismantling of the nut 13. Between these two walls is left empty a spacing allowing the introduction of a cylindrical actuating member 8. The locking fingers 9, positioned at the base of the collar 33, can extend radially through openings made at the base of the outer wall 33a under the action of the operating member 8; the operating member 8 and the fingers 9 have, respectively, a beveled end 82 and 91, these beveled ends being opposite one of the other and cooperating to force the displacement in the deployed position of the fingers 9 when the operating member 8 is moved downwards, locking the stopper 3 on the structure 2. grooves 92 formed on the lower surface of the fingers 9 allow to accommodating an annular spring 93 acting as a return spring holding the fingers 9 arranged in the collar 33 in the absence of stress on the part of the operating member 8.
L'organe de manœuvre 8 présente deux positions stables, une première position, dite position haute, n'agissant pas sur les doigts 9, permettant la mise en position de l'ensemble butée 3 et amortisseur 1 sur la structure 2 et, une seconde position, dite position basse, déplaçant les doigts 9 en position déployée, verrouillant la butée 3 en position dans l'ouverture 21 de la structure 2. Ces deux positions sont maintenues grâce à un clip circulaire 81 positionné sur la surface latérale extérieure de l'organe de manœuvre 8, pénétrant alternativement dans une gorge circulaire supérieure 35a et dans une gorge circulaire inférieure 35b. La gorge supérieure 35a, pratiquée sur la surface intérieure de la paroi extérieure 33a, à proximité de l'extrémité supérieure de cette paroi 33a, positionne l'organe de manœuvre 8 dans sa position haute, laissant les doigts 9 en position rétractée. La gorge inférieure 35b, positionnée au dessous de la gorge supérieure 35a, immobilise l'organe de manœuvre 8 dans sa position basse, déplaçant les doigts 9 en position déployée. Le profil en forme de sapin du clip 81 et des gorges 35a et 35b ne permettent pas à l'organe de manœuvre 8 de repasser de la position basse vers la position haute, évitant ainsi la désolidarisation accidentelle de la butée 3 sur la structure 2. Le démontage de l'amortisseur 1 pour un éventuel remplacement se faisant par l'écrou 13. En cas de nécessité de démontage de la butée 3, pour une question de sécurité, les doigts 9 devront être cassés, imposant le montage d'une butée 3 neuve.The operating member 8 has two stable positions, a first position, said high position, not acting on the fingers 9, allowing the positioning of the stop assembly 3 and damper 1 on the structure 2 and, a second position, said low position, moving the fingers 9 in the deployed position, locking the stopper 3 in position in the opening 21 of the structure 2. These two positions are maintained by means of a circular clip 81 positioned on the outer lateral surface of the operating member 8, penetrating alternately in an upper circular groove 35a and in a lower circular groove 35b. The upper groove 35a, formed on the inner surface of the outer wall 33a, near the upper end of this wall 33a, positions the operating member 8 in its upper position, leaving the fingers 9 in the retracted position. The lower groove 35b, positioned below the upper groove 35a, immobilizes the operating member 8 in its lower position, moving the fingers 9 in the deployed position. The fir-shaped profile of the clip 81 and the grooves 35a and 35b do not allow the operating member 8 to go back from the low position to the high position, thus avoiding the accidental disconnection of the abutment 3 on the structure 2. The disassembly of the damper 1 for a possible replacement is done by the nut 13. In case of necessity of disassembly of the stop 3, for a security question, the fingers 9 must be broken, imposing the mounting of a stop 3 new.
Lors du montage de la butée 3 sur la structure, l'ensemble des éléments de suspension du véhicule sont positionnés sur une platine. La structure du véhicule 2 vient alors coiffer cette platine positionnant les éléments de suspension sur la structure 2 du véhicule. L'opérateur, au moyen d'un outil adapté, vient exercer une pression sur l'organe de manœuvre 8, le déplaçant en position basse, ce qui provoque le déploiement des doigts 9. La surface extérieure latérale de l'organe de manœuvre 8, faisant saillit dans sa position haute, peut être peinte dans une couleur vive, attirant le regard en cas d'oubli de verrouillage sur la structure 2 du véhicule. Pour faciliter le positionnement des butées de suspension 3 dans les ouvertures 21 de la structure 2, des capuchons en forme de cônes peuvent venir coiffer les collerettes 33. Ces capuchons sont, soit positionnés en bordure de chaîne de production, soit mis en position par le fournisseur qui livre les amortisseurs 1 déjà équipés des butées de suspension 3. Avant le verrouillage, l'opérateur retire ces capuchons qui seront recyclés sur de nouveaux ensembles amortisseurs 1 et butées de suspension 3.When mounting the stopper 3 on the structure, all the suspension elements of the vehicle are positioned on a plate. The structure of the vehicle 2 then cap this plate positioning the suspension elements on the structure 2 of the vehicle. The operator, at by means of a suitable tool, comes to exert pressure on the operating member 8, moving it in the low position, which causes the deployment of the fingers 9. The outer lateral surface of the operating member 8, projecting in its high position, can be painted in a bright color, drawing the eye in case of forgetting lock on the structure 2 of the vehicle. To facilitate the positioning of the suspension stops 3 in the openings 21 of the structure 2, cone-shaped caps can cap the flanges 33. These caps are either positioned at the edge of the production line, or placed in position by the supplier who delivers the dampers 1 already equipped with suspension stops 3. Before locking, the operator removes these caps which will be recycled on new damping assemblies 1 and suspension stops 3.
Un autre mode de réalisation consiste à utiliser les capuchons coniques à la fois pour faciliter le montage des collerettes 33 dans les ouvertures 21 de la structure 2 et comme organe de manœuvre, maintenant les doigts 9 en position rétractée. Contrairement au premier mode de réalisation, le ressort 92 pousse les doigts 9 en position déployée ; le retrait des capuchons libérant les doigts 9, ce qui provoque le verrouillage automatique des butées de suspension 3 sur la structure du véhicule 2. Enfin, au niveau de l'épaulement 32, des picots faisant saillie de la surface de contact avec la structure 2 du véhicule, peuvent venir pénétrer dans des ouvertures correspondantes ménagées dans la structure 2 pour former des moyens de détrompage, et ainsi permettre d'orienter le positionnement de la butée de suspension dans l'ouverture 21 de la structure 2.Another embodiment consists of using the conical caps both to facilitate the mounting of the flanges 33 in the openings 21 of the structure 2 and as an operating member, keeping the fingers 9 in the retracted position. Unlike the first embodiment, the spring 92 pushes the fingers 9 in the deployed position; removing the caps releasing the fingers 9, which causes the automatic locking of the suspension stops 3 on the vehicle structure 2. Finally, at the shoulder 32, pins protruding from the contact surface with the structure 2 of the vehicle, can penetrate into corresponding openings in the structure 2 to form keying means, and thus allow to guide the positioning of the suspension stop in the opening 21 of the structure 2.
Il est bien évident que les modes de réalisation qui précédent ont été donnés à titre d'exemples non limitatifs et que de nombreuses variantes peuvent être envisagées sans sortir pour autant du cadre de l'invention. It is obvious that the preceding embodiments have been given by way of non-limiting examples and that many variants can be envisaged without departing from the scope of the invention.

Claims

Revendications claims
1. Véhicule, notamment véhicule automobile, comprenant un élément de structure (2) présentant une ouverture (21 ), un amortisseur de roue (1 ), une butée de suspension (3) servant de support à l'extrémité supérieure (12) de l'amortisseur (1 ), ladite butée comportant un épaulement (32) en appui contre la surface inférieure de l'élément de structure, en pourtour de ladite ouverture (21 ), et une collerette (33) s'étendant au dessus de l'épaulement (32), pénétrant dans l'ouverture (21 ) et faisant saillie au dessus de la surface supérieure de l'élément de structure (2), ladite collerette (33) comportant des moyens de fixation, coopérant avec l'épaulement (32), pour assurer le maintien de la butée (3) sur l'élément de structure (2), caractérisé en ce que lesdits moyens de fixation comportent au moins un doigt de verrouillage (9) mobile entre une première position rétractée permettant le passage de la collerette (33) à travers l'ouverture et une seconde position déployée formant une surface d'appui supérieure sur la surface de l'élément de structure (2), et un organe de manœuvre (8) adapté pour opérer le déplacement du doigt (9) de la position rétractée vers la position déployée.Vehicle, in particular a motor vehicle, comprising a structural element (2) having an opening (21), a wheel damper (1), a suspension stop (3) serving as a support for the upper end (12) of the damper (1), said stop having a shoulder (32) bearing against the lower surface of the structural element, around said opening (21), and a collar (33) extending over the shoulder (32), penetrating into the opening (21) and projecting above the upper surface of the structural element (2), said collar (33) having fastening means cooperating with the shoulder ( 32), to maintain the abutment (3) on the structural element (2), characterized in that said fixing means comprise at least one locking finger (9) movable between a first retracted position allowing the passage the flange (33) through the opening and a second pos deployed member forming an upper bearing surface on the surface of the structural member (2), and an operating member (8) adapted to operate the movement of the finger (9) from the retracted position to the extended position.
2. Véhicule selon la revendication 1 , caractérisé en ce que l'organe de manœuvre (8) et le doigt (9) peuvent se déplacer suivant deux directions perpendiculaires, le déplacement suivant un axe sensiblement vertical de l'organe de manœuvre (8), créant u n déplacement dans un plan sensiblement horizontal du doigt (9).2. Vehicle according to claim 1, characterized in that the operating member (8) and the finger (9) can move in two perpendicular directions, the displacement along a substantially vertical axis of the operating member (8) , creating a displacement in a substantially horizontal plane of the finger (9).
3. Véhicule selon la revendication 2, caractérisé en ce que la butée de suspension (3) comporte des moyens élastiques (92) qui forcent le doigt3. Vehicle according to claim 2, characterized in that the suspension stop (3) comprises elastic means (92) which force the finger
(9) à rencontre de l'organe de manœuvre (8).(9) against the maneuvering member (8).
4. Butée de suspension (3) destinée à fixer u n élément de suspension sur la structure (2) d'un véhicule, caractérisée en ce qu'elle comporte au moins un doigt de verrouillage (9) mobile entre une première position rétractée et une seconde position déployée et un organe de manœuvre (8) adapté pour opérer le déplacement du doigt (9) de la position rétractée vers la position déployée.4. Suspension stop (3) for fixing a suspension element on the structure (2) of a vehicle, characterized in that it comprises at least one locking pin (9) movable between a first retracted position and a second deployed position and an organ of maneuver (8) adapted to operate the movement of the finger (9) from the retracted position to the deployed position.
5. Butée de suspension (3) selon la revendication 4, caractérisée en ce que l'organe de manœuvre (8) et le doigt (9) peuvent se déplacer suivant deux d irections perpend iculaires, le déplacement su ivant u n axe sensiblement vertical de l'organe de manœuvre (8), le long d'une collerette (33), créant un déplacement dans un plan sensiblement horizontal du doigt (9).5. suspension stop (3) according to claim 4, characterized in that the actuating member (8) and the finger (9) can move in two perpendicular d irections, moving along a substantially vertical axis of the operating member (8), along a flange (33), creating a displacement in a substantially horizontal plane of the finger (9).
6. Butée de suspension (3) selon la revendication 5, caractérisée en ce qu'elle comporte des moyens élastiques (92) qui forcent le doigt (9) à rencontre de l'organe de manœuvre (8).6. Suspension stop (3) according to claim 5, characterized in that it comprises elastic means (92) which force the finger (9) against the actuating member (8).
7. Butée de suspension (3) selon la revendication 6, caractérisée en ce que les moyens élastiques (92) comportent un ressort annulaire faisant le tour de la collerette (33) positionné dans une gorge ménagée dans le doigt (9).7. Suspension stop (3) according to claim 6, characterized in that the elastic means (92) comprise an annular spring around the collar (33) positioned in a groove in the finger (9).
8. Butée de suspension (3) selon l'une quelconque des revendications 5 à 7, caractérisée en ce que l'organe de manœuvre (8), lorsqu'il force le déplacement du doigt (9) en position déployée, vient se bloquer en translation le long de la collerette (33). 8. Suspension stop (3) according to any one of claims 5 to 7, characterized in that the actuating member (8), when it forces the movement of the finger (9) in the deployed position, comes to a stop in translation along the collar (33).
9. Butée de suspension (3) selon la revendication 8, caractérisée en ce que l'organe de manœuvre (8) est formé d'une bague cylindrique présentant une extrémité biseautée (82), le doigt (9) comporte une extrémité biseautée (91 ) qui est positionnée en regard de l'extrémité biseautée (91 ) de l'organe de manœuvre (8), l'extrémité biseautée (82) de l'organe de manœuvre (8) coopérant avec l'extrémité biseautée (91 ) du doigt (9) pour forcer le déplacement du doigt (9) en position déployée lorsque l'organe de manœuvre (8) vient se bloquer en translation le long de la collerette (33).9. Suspension stop (3) according to claim 8, characterized in that the operating member (8) is formed of a cylindrical ring having a beveled end (82), the finger (9) has a beveled end ( 91) which is positioned facing the beveled end (91) of the operating member (8), the beveled end (82) of the operating member (8) cooperating with the beveled end (91) finger (9) to force the movement of the finger (9) in the deployed position when the operating member (8) is locked in translation along the collar (33).
10. Butée de suspension (3) selon la revendication 9, caractérisée en ce que la collerette (33) comporte une paroi intérieure (33b) et une paroi extérieure (33a), l'organe de manœuvre (8) étant partiellement positionné entre ces deux parois (33a, 33b) et pouvant présenter une première position stable laissant le doigt (9) en position rétractée et une seconde position bloquée en translation forçant ce dernier en position déployée.10. Suspension stop (3) according to claim 9, characterized in that the flange (33) has an inner wall (33b) and an outer wall (33a), the actuating member (8) being partially positioned between these two walls (33a, 33b) and may have a first stable position leaving the finger (9) in the retracted position and a second position locked in translation forcing the latter in the deployed position.
11. Butée de suspension (3) selon la revendication 10, caractérisé en ce que la butée de suspension (3) comporte plusieurs doigts (9) positionnés dans des ouvertures pratiquées dans la paroi extérieure (33a) de ladite collerette (33).11. Suspension stop (3) according to claim 10, characterized in that the suspension stop (3) comprises a plurality of fingers (9) positioned in openings in the outer wall (33a) of said flange (33).
12. Amortisseur de roue comportant une butée de suspension (3) pour un véhicule selon l'une quelconque des revendications 4 à 11. Wheel damper comprising a suspension stop (3) for a vehicle according to any one of claims 4 to 11.
PCT/FR2010/051020 2009-05-27 2010-05-27 Bump stop and suspension strut including one such bump stop WO2010136726A1 (en)

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FR0953475A FR2945983B1 (en) 2009-05-27 2009-05-27 SUSPENSION STOP AND VEHICLE COMPRISING A SUSPENSION STOP
FR0953475 2009-05-27

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FR3026059A1 (en) * 2014-09-23 2016-03-25 Peugeot Citroen Automobiles Sa DAMPER WITH HOOKS FASTENING A MOUNTING STRAP
CN105798196A (en) * 2016-04-26 2016-07-27 李志联 Composite molding process for electric vehicle chassis suspension assembly

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FR2972663B1 (en) * 2011-03-15 2013-03-29 Peugeot Citroen Automobiles Sa DEVICE FOR CENTERING AND HOLDING IN THE CENTER POSITION A WASHER INSIDE A DAMPER, WHEN ASSEMBLING THE SHAFT OF THE SAME
US11459035B1 (en) * 2021-03-16 2022-10-04 Ford Global Technologies, Llc Shock absorber assembly structures

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FR2726789A1 (en) * 1994-11-10 1996-05-15 Fichtel & Sachs Ag LINK SUPPORT SYSTEM FOR SHOCK ABSORBER
FR2919909A1 (en) 2007-08-09 2009-02-13 Peugeot Citroen Automobiles Sa Upper mounting for motor vehicle, has outer armature with tabs permitting to insert armature in opening and forming upper support surface for fixing armature to body shell by stop without using fixation screw

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JPS60163774A (en) * 1984-02-02 1985-08-26 Mazda Motor Corp Mounting device for suspension unit
FR2726789A1 (en) * 1994-11-10 1996-05-15 Fichtel & Sachs Ag LINK SUPPORT SYSTEM FOR SHOCK ABSORBER
FR2919909A1 (en) 2007-08-09 2009-02-13 Peugeot Citroen Automobiles Sa Upper mounting for motor vehicle, has outer armature with tabs permitting to insert armature in opening and forming upper support surface for fixing armature to body shell by stop without using fixation screw

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Publication number Priority date Publication date Assignee Title
FR3026059A1 (en) * 2014-09-23 2016-03-25 Peugeot Citroen Automobiles Sa DAMPER WITH HOOKS FASTENING A MOUNTING STRAP
CN105798196A (en) * 2016-04-26 2016-07-27 李志联 Composite molding process for electric vehicle chassis suspension assembly

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FR2945983A1 (en) 2010-12-03

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