FR2863944A1 - Strut for motor vehicle, has spring up with support for suspension spring of vehicle, where support is extended radially up to axial front surface of stop and is fixed to spring up by interlocking connection - Google Patents

Strut for motor vehicle, has spring up with support for suspension spring of vehicle, where support is extended radially up to axial front surface of stop and is fixed to spring up by interlocking connection Download PDF

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Publication number
FR2863944A1
FR2863944A1 FR0413500A FR0413500A FR2863944A1 FR 2863944 A1 FR2863944 A1 FR 2863944A1 FR 0413500 A FR0413500 A FR 0413500A FR 0413500 A FR0413500 A FR 0413500A FR 2863944 A1 FR2863944 A1 FR 2863944A1
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France
Prior art keywords
support
spring
stop
spring cup
abutment
Prior art date
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Granted
Application number
FR0413500A
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French (fr)
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FR2863944B1 (en
Inventor
Gunther Handke
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Publication of FR2863944A1 publication Critical patent/FR2863944A1/en
Application granted granted Critical
Publication of FR2863944B1 publication Critical patent/FR2863944B1/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/04—Buffer means for limiting movement of arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/14—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only
    • B60G11/16—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • 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
    • B60G15/062—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
    • B60G15/063—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper characterised by the mounting of the spring on the damper
    • 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
    • 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
    • F16F9/58—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/46—Indexing codes relating to the wheels in the suspensions camber angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/312—The spring being a wound spring
    • 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
    • B60G2204/124—Mounting of coil springs
    • 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
    • B60G2204/124—Mounting of coil springs
    • B60G2204/1242—Mounting of coil springs on a damper, e.g. MacPerson strut
    • 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
    • B60G2204/43—Fittings, brackets or knuckles
    • 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
    • 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
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/45—Stops limiting travel
    • B60G2204/4502—Stops limiting travel using resilient buffer
    • 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
    • B60G2204/61—Adjustable during maintenance

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vehicle Body Suspensions (AREA)
  • Springs (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The strut has a spring up (11) with a support (17) for a suspension spring of a vehicle, and axially supported on a stop. The stop is connected to the support, and is retained on the spring up by an interlocking connection (21). The support is extended radially up to an axial front surface (33) of the stop and is fixed to the spring up by the interlocking connection.

Description

L'invention concerne une jambe de suspension, comprenant une coupelle deThe invention relates to a suspension strut comprising a cup of

ressort, qui est réalisée avec un support pour un ressort de suspension de véhicule, dans laquelle sur la coupelle de ressort prend appui axialement  spring, which is made with a support for a vehicle suspension spring, in which on the spring cup bears axially

une butée de choc, qui est retenue sur la coupelle de ressort par l'intermédiaire d'une liaison à encliquetage.  a shock abutment, which is retained on the spring cup via a snap connection.

D'après le brevet US 5 232 209 on connaît une jambe de suspension, dont la coupelle de ressort, située côté palier, comporte un support pour le ressort de suspension du véhicule. Un tel support est utilisé en général pour réaliser une isolation acoustique et est formé d'un matériau élastomère.  According to US Pat. No. 5,232,209 there is known a suspension strut, the spring cup of which, on the bearing side, comprises a support for the suspension spring of the vehicle. Such a support is generally used to achieve acoustic insulation and is formed of an elastomeric material.

D'autre part, la jambe de suspension comporte une butée de choc, qui prend appui sur un bord intérieur de la coupelle de ressort, qui porte également le support séparé. Les forces, qui doivent être absorbées par la butée de choc, sont d'un ordre de grandeur compris de façon sûre de 40 à 50 kN, une telle force devant être absorbée en supplément par la coupelle de ressort.  On the other hand, the strut has a shock stop, which is supported on an inner edge of the spring cup, which also carries the separate support. The forces which must be absorbed by the impact stop are of an order of magnitude safely within the range of 40 to 50 kN, such force to be further absorbed by the spring cup.

Dans le cas d'une coupelle de ressort comportant un support, il faut prendre des dispositions pour que le support conserve la position conforme aux spécifications, pendant le déroulement de la fabrication jusqu'au montage du ressort de suspension du véhicule. C'est pourquoi, on utilise par exemple des liaisons collées ou des liaisons serrées, qui naturellement représentent un facteur de coût.  In the case of a spring cup having a support, provision shall be made for the support to maintain the position conforming to the specifications during the manufacturing process until the suspension spring of the vehicle is mounted. This is why, for example, bonded bonds or tight bonds are used which naturally represent a cost factor.

La présente invention a pour but de fournir une autre possibilité pour la fixation d'un support sur la coupelle de ressort d'une jambe de suspension.  The present invention aims to provide another possibility for fixing a support on the spring cup of a suspension strut.

Ce problème est résolu conformément à l'invention à l'aide d'une jambe de suspension du type indiqué plus haut dans laquelle le support s'étend radialement jusqu'à une surface frontale, située du côté de la coupelle de ressort, de la butée de choc et est fixée à la coupelle de ressort au moyen de la liaison à encliquetage, la butée de choc étant reliée à son tour au support.  This problem is solved according to the invention using a suspension strut of the type indicated above in which the support extends radially to a front surface, located on the side of the spring cup, the shock abutment and is attached to the spring cup by means of the snap connection, the abutment being connected in turn to the support.

Le principal avantage de l'invention réside dans le fait que la coupelle de ressort, le support et la butée de choc forment une unité de construction totalement indépendante, qui peut être fabriquée et manipulée séparément des autres modules de la jambe de suspension.  The main advantage of the invention lies in the fact that the spring cup, the support and the impact stop form a completely independent construction unit, which can be manufactured and handled separately from the other modules of the strut.

En ce qui concerne l'obtention d'une bonne durabilité de la butée de choc, il est prévu que le support comporte une partie en forme de douille, qui s'étend en direction de la butée de choc et prend appui radialement sur la butée de choc. Même dans le cas de l'application de forces assez intenses, la butée de choc ne peut pas être écrasée.  With regard to obtaining a good durability of the abutment, it is expected that the support comprises a sleeve-shaped portion, which extends in the direction of the abutment and bears radially against the abutment of choc. Even in the case of the application of rather intense forces, the shock stop can not be crushed.

Selon une autre forme de réalisation avantageuse de l'invention, la partie en forme de douille est reliée à la butée de choc au moyen d'un système de liaison par formes complémentaires qui agit axialement. Cette solution fournit l'avantage consistant en ce que lors d'une première étape, on réalise la liaison à encliquetage entre le support et la coupelle de ressort.  According to another advantageous embodiment of the invention, the sleeve-shaped portion is connected to the shock abutment by means of a complementary shape-linking system which acts axially. This solution provides the advantage that in a first step, the snap connection is made between the support and the spring cup.

On peut bien manipuler ou également stocker temporairement un tel module secondaire dans une chaîne de fabrication. C'est uniquement lorsque le déroulement de la fabrication le prescrit que la butée de choc peut être également montée ultérieurement.  It is possible to handle or also temporarily store such a secondary module in a production line. It is only when the manufacturing process prescribes that the shock stop can also be mounted later.

Conformément à une variante de réalisation avantageuse, la partie en forme de douille porte un tube de protection. Lorsque par exemple la butée de choc est guidée sur la circonférence intérieure de la partie en forme de douille et attaque la périphérie extérieure du tube de protection, alors la butée de choc et le tube de protection se verrouillent réciproquement sur la partie en forme de douille.  According to an advantageous embodiment variant, the sleeve-shaped portion carries a protective tube. When for example the abutment stop is guided on the inner circumference of the sleeve-shaped portion and engages the outer periphery of the protection tube, then the abutment and the protection tube lock each other on the sleeve-shaped portion. .

Dans une autre variante, le support est serré 35 entre la surface frontale, située du côté de la coupelle de ressort, de la butée de choc et la coupelle de ressort et la butée de choc est reliée à la coupelle de ressort par l'intermédiaire d'une liaison à encliquetage.  In another variant, the support is clamped between the front surface, located on the side of the spring cup, of the abutment and the spring cup and the abutment is connected to the spring cup via a snap connection.

L'invention concerne également une jambe de suspension du type indiqué plus haut, dans laquelle le support s'étend radialement jusqu'à une surface frontale axiale de la butée de choc et un organe de serrage séparé serre les uns contre les autres la coupelle de ressort, le support et la butée de choc.  The invention also relates to a suspension strut of the type indicated above, wherein the support extends radially to an axial end surface of the abutment and a separate clamping member clamps against each other the cup of spring, support and shock stop.

L'avantage de cette disposition réside dans le fait que tous les composants peuvent être réalisés avec le matériau optimum pour la fonction considérée.  The advantage of this arrangement lies in the fact that all components can be made with the optimum material for the function in question.

A cet effet l'organe de serrage est réalisé en un matériau élastique, de sorte que le support ou la butée de choc a tendance à présenter une élasticité propre plus faible. De préférence l'organe de serrage peut être réalisé en une matière plastique.  For this purpose the clamping member is made of an elastic material, so that the support or the stopper tends to have a lower inherent elasticity. Preferably the clamping member may be made of a plastics material.

Dans une autre forme de réalisation avantageuse, une liaison à encliquetage est prévue entre l'organe de serrage et la butée de choc. C'est pourquoi, on peut réaliser une surface de contact comparativement étendue entre l'organe de serrage et la face supérieure de la coupelle de ressort.  In another advantageous embodiment, a snap connection is provided between the clamping member and the abutment. Therefore, a comparatively large contact area can be made between the clamping member and the upper face of the spring cup.

D'autres dispositions pour accroître la capacité de retenue des modules formés par la coupelle de ressort, le support et la butée de choc, résident dans le fait que la butée de choc comporte, en direction de l'organe de serrage, une surface conique de verrouillage. Il se produit, lors d'un mouvement de contraction de la suspension, un mouvement d'écartement de l'organe de serrage sur la butée de choc.  Other provisions for increasing the retaining capacity of the modules formed by the spring cup, the support and the abutment stop reside in the fact that the impact stop comprises, in the direction of the clamping member, a conical surface locking. During a contraction movement of the suspension, a movement of movement of the clamping member over the abutment stop occurs.

D'autres caractéristiques et avantages de la présente invention, ressortiront de la description donnée ci-après, prise en référence aux dessins annexés, sur lesquels: - la figure 1 représente la jambe de suspension avec une liaison encliquetée entre le support et la coupelle de ressort; - la figure 2 représente la jambe de suspension 5 avec une liaison encliquetée entre la butée de choc et la coupelle de ressort; et la figure 3 représente la jambe de suspension comportant un organe de serrage pour établir la liaison entre la butée de choc et le support pourvu de la coupelle de ressort.  Other features and advantages of the present invention will emerge from the description given below, taken in conjunction with the accompanying drawings, in which: - Figure 1 shows the strut with a snap connection between the support and the cup of spring; - Figure 2 shows the strut 5 with a connection snapped between the stopper and the spring cup; and FIG. 3 shows the suspension strut comprising a clamping member for establishing the connection between the shock stop and the support provided with the spring cup.

La figure 1 représente une extrémité, côté palier, d'une jambe de suspension 1 pour véhicule automobile. A l'intérieur d'un cylindre 3 est déplaçable axialement une tige de piston 5, qui prend appui par l'intermédiaire d'un palier 7 sur une carrosserie de véhicule non représentée. Ce palier 7 comprend un palier rotatif 9, qui peut amener une coupelle de ressort en forme de pot 11 à exécuter un déplacement relatif de rotation par rapport au palier 7. La coupelle de ressort 11 est réalisée en un matériau métallique et possède une ouverture de passage 13 pour la tige de piston 5, une fente annulaire 15 étant prévue entre le diamètre intérieur de la coupelle de ressort et la tige de piston. Un support 17 pour un ressort de suspension 18 de véhicule est disposé sous la coupelle de ressort 11. Ce support 17 s'étend radialement jusque dans la fente annulaire 15 et est centré sur la coupelle de ressort 11. Le support 17 comporte des crochets d'encliquetage 19, qui sont dirigés vers le palier et forment, conjointement avec la périphérie intérieure de la coupelle de ressort, un système de liaison à encliquetage 21 de sorte que la coupelle de ressort 11 et le support 17 sont fixés ensemble et représentent un sous-module indépendant de la jambe de suspension 1.  FIG. 1 represents an end, on the bearing side, of a suspension strut 1 for a motor vehicle. Inside a cylinder 3 is axially displaceable a piston rod 5, which is supported by means of a bearing 7 on a vehicle body not shown. This bearing 7 comprises a rotary bearing 9, which can cause a pot-shaped spring cup 11 to perform a relative rotational movement with respect to the bearing 7. The spring cup 11 is made of a metallic material and has an opening of passage 13 for the piston rod 5, an annular slot 15 being provided between the inner diameter of the spring cup and the piston rod. A support 17 for a vehicle suspension spring 18 is disposed under the spring cup 11. This support 17 extends radially into the annular slot 15 and is centered on the spring cup 11. The support 17 comprises hooks of 19, which are directed towards the bearing and form, together with the inner periphery of the spring cup, a snap connection system 21 so that the spring cup 11 and the support 17 are fixed together and represent a sub-slot. -module independent of the suspension strut 1.

D'autre part le support 17 comporte une partie en 35 forme de douille 23, qui forme une chambre de réception 25 pour une butée de choc 27. La butée de choc 27 est également réalisée en un matériau élastomère et peut venir s'appliquer, dans un état de contraction élastique, contre une surface frontâle supérieure 29 du cylindre 3, appartenant à un capuchon d'extrémité 31 du cylindre 3. La butée de choc 27 prend appui par une face frontale supérieure 33 contre le support 17, qui à nouveau transmet les forces d'appui à la coupelle de ressort métallique 11. De ce fait, dans l'état détendu, afin que la butée de choc 27 ne puisse pas se désolidariser de la partie en forme de douille 23 du support 17, il existe entre la partie en forme de douille 23 et la butée de choc 27, un système de liaison par formes complémentaires 35 qui est formé par au moins un rebord 37 qui est dirigé radialement vers l'intérieur et s'engage dans une gorge 39 de la butée de choc 27. La gorge 39 peut être également réalisée sous la forme d'une partie en dépouille ouverte.  On the other hand, the support 17 comprises a sleeve-shaped portion 23, which forms a reception chamber 25 for a shock abutment 27. The shock abutment 27 is also made of an elastomeric material and can be applied, in a state of elastic contraction, against an upper frontal surface 29 of the cylinder 3, belonging to an end cap 31 of the cylinder 3. The shock abutment 27 is supported by an upper end face 33 against the support 17, which again transmits the bearing forces to the metal spring cup 11. Therefore, in the relaxed state, so that the abutment stop 27 can not separate from the sleeve-shaped portion 23 of the support 17, there exists between the sleeve-shaped portion 23 and the abutment stop 27, a complementary shape-connecting system 35 which is formed by at least one rim 37 which is directed radially inwards and engages a groove 39 of the shock stop 27. The groove 39 can also be made in the form of an open flange portion.

Sur le côté radialement extérieur, la partie en forme de douille 23 possède, par l'intermédiaire d'un autre système de liaison à encliquetage 41, un tube de protection 43 se présentant sous la forme d'un soufflet. En raison de cette disposition en vis-à-vis du tube de protection 43 et de la butée de choc 27 sur la partie en forme de douille 23, un système de liaison 35, 41 se verrouille réciproquement avec la partie en forme de douille 23.  On the radially outer side, the sleeve-shaped portion 23 has, via another snap connection system 41, a protective tube 43 in the form of a bellows. Due to this arrangement vis-à-vis the protection tube 43 and the shock abutment 27 on the sleeve-shaped portion 23, a connection system 35, 41 interlocked with the sleeve-shaped portion 23 .

La figure 2 représente une variante, dans laquelle la liaison à encliquetage 21, qui maintient le support 17 sur la coupelle de ressort 11, est formée par la butée de choc 27. Le support 17 est serré entre la coupelle de ressort 11 et la surface frontale supérieure 33 de la butée de choc 27. Des crochets d'encliquetage 29, qui prennent appui sur la face supérieure de la coupelle de ressort 11, s'étendent depuis la surface frontale supérieure de la butée de choc à travers la fente annulaire 15. Comparativement à la variante de la figure 1, le contour intérieur de la chambre de réception 26 de la partie en forme de douille 23 est simplifié étant donné qu'à la place de cette dernière, il n'est pas nécessaire que soit présente une liaison par formes complémentaires avec la butée de choc 27.  FIG. 2 shows a variant, in which the snap connection 21, which holds the support 17 on the spring cup 11, is formed by the abutment stop 27. The support 17 is clamped between the spring cup 11 and the surface upper end 33 of the abutment stop 27. Ratchet hooks 29, which bear on the upper face of the spring cup 11, extend from the upper end surface of the abutment stop through the annular slot 15 Compared with the variant of FIG. 1, the inner contour of the receiving chamber 26 of the sleeve-shaped part 23 is simplified since, in place of the latter, it is not necessary that a connection by complementary shapes with the abutment stop 27.

La figure 3 représente une autre variante, dans laquelle on utilise, contrairement aux autres variantes, un organe de serrage séparé 45 qui serre le support 17 entre la butée de choc 27 et la coupelle de ressort 11. Comme on le voit, le support 17 s'étend radialement jusqu'à la surface frontale supérieure 33 de la butée de choc 27. L'organe de serrage 45 comporte une demi-section transversale en forme de U et un bord supérieur 47 s'appliquant sur la face supérieure ila de la coupelle de ressort. Un élément intercalaire de forme tubulaire 49 de l'organe de serrage 45 traverse la fente annulaire 15 et se termine par des crochets d'encliquetage 19, qui forment, avec un profilé intérieur 51 de la butée de choc 27, la liaison à encliquetage 21. Pour l'organe de serrage 45, on utilise un matériau élastique, auquel cas, une action radiale d'écartement des crochets d'encliquetage peut être utilisée (en tant que système supplémentaire de sécurité axiale pour la butée de choc), entre les crochets d'encliquetage 19, qui possèdent une surface enveloppe conique 53, et une surface conique de verrouillage 55 de la butée de choc en direction de l'organe de serrage, avec une précontrainte axiale croissante de la butée de choc dans le cas d'un déplacement de contraction de la suspension.  FIG. 3 represents another variant, in which unlike the other variants, a separate clamping member 45 is used which clamps the support 17 between the abutment stop 27 and the spring cup 11. As can be seen, the support 17 extends radially to the upper end surface 33 of the abutment stop 27. The clamping member 45 has a U-shaped half-cross-section and an upper edge 47 which is applied to the upper face 11a of the spring cup. A tubular-shaped intermediate element 49 of the clamping member 45 passes through the annular slot 15 and terminates in latching hooks 19, which form, with an inner profile 51 of the abutment stop 27, the snap connection 21. For the clamping member 45, a resilient material is used, in which case a radially spacing action of the snap hooks may be used (as an additional axial safety system for the abutment stop) between snap hooks 19, which have a conical envelope surface 53, and a tapered locking surface 55 of the impact stop towards the clamping member, with increasing axial prestressing of the impact stop in the case of a contraction displacement of the suspension.

Claims (9)

REVENDICATIONS 1. Jambe de suspension, comprenant une coupelle de ressort, qui est réalisée avec un support pour un ressort de suspension de véhicule, dans laquelle sur la coupelle de ressort, prend appui axialement une butée de choc, qui est retenue sur la coupelle de ressort par l'intermédiaire d'une liaison à encliquetage, caractérisée en ce que le support (17) s'étend radialement et prend appui sur une surface frontale (33) de la butée de choc (27), située du côté de la coupelle de ressort et est fixé à la coupelle de ressort (11) au moyen de la liaison à encliquetage {21), la butée de choc (27) étant reliée à son tour au support (17).  1. Suspension leg, comprising a spring cup, which is made with a support for a vehicle suspension spring, in which on the spring cup, axially bears a shock stop, which is retained on the spring cup by means of a snap connection, characterized in that the support (17) extends radially and bears on a front surface (33) of the abutment stop (27), situated on the side of the cup of spring and is fixed to the spring cup (11) by means of the snap connection (21), the shock stop (27) being connected in turn to the support (17). 2. Jambe de suspension selon la revendication 1, caractérisée en ce que le support {17) comporte une partie en forme de douille (23), qui s'étend en direction de la butée de choc (27) et prend appui radialement sur la butée de choc (2 7) .  2. Suspension strut according to claim 1, characterized in that the support (17) comprises a sleeve-shaped portion (23), which extends in the direction of the abutment stop (27) and bears radially on the shock stop (27). 3. Jambe de suspension selon la revendication 2, caractérisée en ce que la partie en forme de douille (23) est reliée à la butée de choc (27) au moyen d'un système de liaison par formes complémentaires (35) qui agit axialement.3. Suspension strut according to claim 2, characterized in that the sleeve-shaped part (23) is connected to the abutment stop (27) by means of a complementary shape-connecting system (35) acting axially. . 4. Jambe de suspension selon la revendication 2 25 ou 3, caractérisée en ce que la partie en forme de douille (23) porte un tube de protection (43) .  4. Suspension strut according to claim 2 or 3, characterized in that the sleeve-shaped part (23) carries a protective tube (43). 5. Jambe de suspension selon la revendication 1, caractérisée en ce que le support (17) est serré entre la surface frontale (33) de la butée de choc (27) située du côté de la coupelle de ressort et la coupelle de ressort (11), la butée de choc (27) étant reliée à la coupelle de ressort (11) par l'intermédiaire d'une liaison à encliquetage (21).  5. Suspension strut according to claim 1, characterized in that the support (17) is clamped between the end surface (33) of the abutment (27) located on the side of the spring cup and the spring cup ( 11), the abutment (27) being connected to the spring cup (11) via a snap connection (21). 6. Jambe de suspension, comprenant une coupelle 35 de ressort, qui est réalisée avec un support pour un ressort de suspension de véhicule, dans laquelle sur la coupelle de ressort prend appui axialement une butée de choc, qui est retenue sur la coupelle de ressort par l'intermédiaire d'une liaison à encliquetage, caractérisée en ce que le support (17) s'étend radialement jusqu'à une surface frontale axiale (33) de la butée de choc (27) et qu'un organe de serrage séparé (45) serre les uns contre les autres la coupelle de ressort (11), le support (17) et la butée de choc (27).  6. Suspension leg, comprising a spring cup 35, which is made with a support for a vehicle suspension spring, in which on the spring cup bears axially a stopper, which is retained on the spring cup by means of a snap connection, characterized in that the support (17) extends radially to an axial end surface (33) of the abutment stop (27) and a separate clamping member (45) clamps against each other the spring cup (11), the support (17) and the shock stop (27). 7. Jambe de suspension selon la revendication 6, caractérisée en ce que l'organe de serrage (45) est réalisé en un matériau élastique.  7. Suspension strut according to claim 6, characterized in that the clamping member (45) is made of an elastic material. 8. Jambe de suspension selon la revendication 6 ou 7, caractérisée en ce qu'une liaison à encliquetage (21) est présente entre l'organe de serrage (45) et la butée de choc (27).  8. Suspension strut according to claim 6 or 7, characterized in that a snap connection (21) is present between the clamping member (45) and the abutment (27). 9. Jambe de suspension selon l'une quelconque des revendications 6 à 8, caractérisée en ce la butée de choc (27) possède, en direction de l'organe de serrage (45), une 20 surface conique de verrouillage (55).  Suspension strut according to one of Claims 6 to 8, characterized in that the impact stop (27) has a conical locking surface (55) in the direction of the clamping member (45).
FR0413500A 2003-12-18 2004-12-17 SUSPENSION LEG COMPRISING A SHOCK STOP Expired - Fee Related FR2863944B1 (en)

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EP1591691A1 (en) * 2004-04-30 2005-11-02 ZF Friedrichshafen AG Strut support bearing
FR2899154A1 (en) * 2006-03-31 2007-10-05 Snr Roulements Sa Bump stop device for e.g. motor vehicle`s Macpherson type strut, has intermediate support component with upper surface, and lower surface forming internal shoulder directly connected to bottom of monoblock pressed metal cup
EP1882601A1 (en) * 2006-07-26 2008-01-30 S.N.R. Roulements Bump stop and MacPherson strut fitted with such a stop
FR2910383A1 (en) * 2006-12-22 2008-06-27 Snr Roulements Sa Bump stop for MacPherson strut, has support element and metallic mount with fixation reliefs, pin and traversing orifice for assuring fixation of mount with element by deformation of mount or element
WO2011070117A1 (en) * 2009-12-10 2011-06-16 Aktiebolaget Skf Thrust bearing and suspension for vehicle
FR3038261A1 (en) * 2015-07-02 2017-01-06 Renault Sa FORCE LEG WITH ENHANCED MAINTENANCE
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EP1591691A1 (en) * 2004-04-30 2005-11-02 ZF Friedrichshafen AG Strut support bearing
US7364177B2 (en) 2004-04-30 2008-04-29 Zf Friedrichshafen Ag Suspension strut top mount
FR2899154A1 (en) * 2006-03-31 2007-10-05 Snr Roulements Sa Bump stop device for e.g. motor vehicle`s Macpherson type strut, has intermediate support component with upper surface, and lower surface forming internal shoulder directly connected to bottom of monoblock pressed metal cup
EP1882601A1 (en) * 2006-07-26 2008-01-30 S.N.R. Roulements Bump stop and MacPherson strut fitted with such a stop
FR2904261A1 (en) * 2006-07-26 2008-02-01 Snr Roulements Sa STOPPER OF SUSPENSION AND SUSPENSION LEG WITH SUCH A ROCKET
FR2910383A1 (en) * 2006-12-22 2008-06-27 Snr Roulements Sa Bump stop for MacPherson strut, has support element and metallic mount with fixation reliefs, pin and traversing orifice for assuring fixation of mount with element by deformation of mount or element
WO2011070117A1 (en) * 2009-12-10 2011-06-16 Aktiebolaget Skf Thrust bearing and suspension for vehicle
FR2953895A1 (en) * 2009-12-10 2011-06-17 Skf Ab STOP SUSPENSION DEVICE.
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CN102666150B (en) * 2009-12-10 2014-12-03 Skf公司 Thrust bearing and suspension for vehicle
US8939439B2 (en) 2009-12-10 2015-01-27 Aktiebolaget Skf Thrust bearing and suspension for vehicle
FR3038261A1 (en) * 2015-07-02 2017-01-06 Renault Sa FORCE LEG WITH ENHANCED MAINTENANCE
EP3219521A1 (en) * 2016-03-18 2017-09-20 NTN-SNR Roulements Bump stop with axially moulded integral cup
FR3048920A1 (en) * 2016-03-18 2017-09-22 Ntn-Snr Roulements MONOBLOC SUSPENSION STOP SUSPENSION WITH AXIAL MOLDING

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