FR3125498A1 - Sealed suspension stopper device - Google Patents

Sealed suspension stopper device Download PDF

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Publication number
FR3125498A1
FR3125498A1 FR2108003A FR2108003A FR3125498A1 FR 3125498 A1 FR3125498 A1 FR 3125498A1 FR 2108003 A FR2108003 A FR 2108003A FR 2108003 A FR2108003 A FR 2108003A FR 3125498 A1 FR3125498 A1 FR 3125498A1
Authority
FR
France
Prior art keywords
support cover
cover
seal
bearing
lower support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR2108003A
Other languages
French (fr)
Inventor
Bruno Montboeuf
Xavier Blanchard
Thomas Lepine
Jordan Renaudon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF AB
Original Assignee
SKF AB
Svenska Kullagerfabriken AB
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 SKF AB, Svenska Kullagerfabriken AB filed Critical SKF AB
Priority to FR2108003A priority Critical patent/FR3125498A1/en
Publication of FR3125498A1 publication Critical patent/FR3125498A1/en
Pending legal-status Critical Current

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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
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • 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
    • 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
    • B60G2204/418—Bearings, e.g. ball or roller bearings
    • 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
    • B60G2206/70—Materials used in suspensions
    • B60G2206/71—Light weight materials
    • B60G2206/7104—Thermoplastics
    • 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
    • B60G2206/70—Materials used in suspensions
    • B60G2206/73—Rubber; Elastomers
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/588—Races of sheet metal

Landscapes

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

Abstract

Le dispositif comprend un capot de support 16 inférieur, un capot d’appui 14 supérieur, au moins un palier 18 disposé entre lesdits capots, et au moins un joint d’étanchéité annulaire 32. Le joint d’étanchéité 32 comprend une portion de fixation 40 solidaire par liaison mécanique au capot de support inférieur 16, une portion d’étanchéité 42 s’étendant depuis la portion de fixation 40 en direction du capot d’appui supérieur 14, et un talon 44 s’étendant axialement depuis la portion d’étanchéité 42 et venant en appui contre une portion 34a de la surface supérieure 34 du capot de support inférieur 16. Figure pour l’abrégé : Figure 1The device comprises a lower support cover 16, an upper support cover 14, at least one bearing 18 disposed between said covers, and at least one annular seal 32. The seal 32 comprises a fixing portion 40 fixed by mechanical connection to the lower support cover 16, a sealing portion 42 extending from the fixing portion 40 in the direction of the upper support cover 14, and a heel 44 extending axially from the portion of sealing 42 and bearing against a portion 34a of the upper surface 34 of the lower support cover 16. Figure for the abstract: Figure 1

Description

Dispositif de butée de suspension à joint d’étanchéitéSealed suspension stopper device

Domaine technique de l’inventionTechnical field of the invention

La présente invention concerne le domaine des dispositifs de butée de suspension utilisés en particulier pour les véhicules automobiles dans les jambes de force de suspension des roues directrices.The present invention relates to the field of suspension thrust bearing devices used in particular for motor vehicles in the suspension struts of the steered wheels.

Etat de la technique antérieureState of the prior art

Un dispositif de butée de suspension comprend généralement un roulement formant butée axiale et des capots supérieur et inférieur formant un logement pour les bagues du roulement et permettant d’assurer l’interface entre lesdites bagues et les éléments avoisinants.A suspension thrust bearing device generally comprises a bearing forming an axial thrust bearing and upper and lower covers forming a housing for the rings of the bearing and making it possible to provide the interface between said rings and the neighboring elements.

Le dispositif de butée de suspension est disposé dans la partie supérieure de la jambe de suspension entre un ressort de suspension et la caisse du véhicule. Le ressort de suspension est monté autour d’une tige de piston amortisseur dont l’extrémité est liée à la caisse du véhicule. Le ressort de suspension, du type ressort hélicoïdal, vient axialement en appui directement ou indirectement sur le capot inférieur du dispositif de butée de suspension.The suspension thrust bearing device is arranged in the upper part of the suspension strut between a suspension spring and the vehicle body. The suspension spring is mounted around a shock absorber piston rod, the end of which is linked to the vehicle body. The suspension spring, of the helical spring type, bears axially directly or indirectly on the lower cover of the suspension thrust bearing device.

Le dispositif de butée de suspension permet de transmettre des efforts axiaux et radiaux entre le ressort de suspension et la caisse du véhicule tout en autorisant un mouvement de rotation relatif entre le capot inférieur et le capot supérieur découlant d’un braquage des roues directrices du véhicule et/ou de la compression du ressort de suspension.The suspension thrust bearing device makes it possible to transmit axial and radial forces between the suspension spring and the body of the vehicle while allowing a relative rotational movement between the lower cover and the upper cover resulting from a turning of the steering wheels of the vehicle and/or compression of the suspension spring.

Généralement, le capot supérieur du dispositif de butée de suspension est pourvu d’une pluralité de crochets disposés sur une jupe externe ou interne et adaptés pour interférer diamétralement avec une pluralité de crochets du capot inférieur. Les crochets de chaque capot sont espacés les uns des autres dans le sens circonférentiel.Generally, the upper cover of the suspension thrust bearing device is provided with a plurality of hooks arranged on an external or internal skirt and adapted to interfere diametrically with a plurality of hooks of the lower cover. The hooks of each cover are spaced from each other in the circumferential direction.

Les crochets forment des moyens de retenue permettant de retenir axialement les capots supérieur et inférieur l’un par rapport à l’autre. Ces crochets forment également des passages étroits afin de limiter l’intrusion de particules polluantes radialement entre la jupe externe ou interne du capot supérieur et le capot inférieur.The hooks form retaining means making it possible to axially retain the upper and lower cowls relative to each other. These hooks also form narrow passages in order to limit the intrusion of polluting particles radially between the outer or inner skirt of the upper cowl and the lower cowl.

Cependant, un dispositif de butée de suspension est généralement exposé à divers types de pollution. Avec un tel dispositif, les particules polluantes et de l’eau peuvent facilement s’infiltrer entre la jupe externe ou interne du capot supérieur et le capot inférieur, puis être dirigées vers le roulement et être introduites à l’intérieur de ce dernier. Il est commun de prévoir au moins un joint d’étanchéité de matière rigide ou souple de manière à former une barrière pour prévenir l’entrée de pollution dans l’espace entre les capots.However, a bump stop device is generally exposed to various types of pollution. With such a device, polluting particles and water can easily infiltrate between the external or internal skirt of the upper cover and the lower cover, then be directed towards the bearing and be introduced inside the latter. It is common to provide at least one seal of rigid or flexible material so as to form a barrier to prevent the entry of pollution into the space between the covers.

La présente invention vise à prévoir un joint d’étanchéité d’efficacité et de montage améliorés.The present invention aims to provide a seal of improved efficiency and assembly.

L’invention concerne un dispositif de butée de suspension comprenant un capot de support inférieur, un capot d’appui supérieur, au moins un palier disposé entre une surface supérieure du capot de support inférieur et une surface inférieure du capot d’appui supérieur, et au moins un joint d’étanchéité annulaire disposé radialement au moins en partie entre une jupe extérieure du capot d’appui supérieur et le palier.The invention relates to a suspension thrust bearing device comprising a lower support cover, an upper support cover, at least one bearing arranged between an upper surface of the lower support cover and a lower surface of the upper support cover, and at least one annular seal disposed radially at least in part between an outer skirt of the upper bearing cover and the bearing.

Conformément à l’invention, le joint d’étanchéité comprend une portion de fixation solidaire par liaison mécanique au capot de support inférieur, une portion d’étanchéité s’étendant depuis la portion de fixation en direction du capot d’appui supérieur, et un talon s’étendant axialement depuis la portion d’étanchéité et venant en appui contre une portion de la surface supérieure du capot de support inférieur, ledit joint d’étanchéité étant formé monobloc.According to the invention, the seal comprises a fastening portion secured by mechanical connection to the lower support cover, a sealing portion extending from the fastening portion in the direction of the upper bearing cover, and a heel extending axially from the sealing portion and bearing against a portion of the upper surface of the lower support cover, said sealing gasket being formed in one piece.

Le joint d’étanchéité permet de limiter l’intrusion de poussières, d’eau et d’autres types de particules polluantes à l’intérieur du palier. La partie d’extrémité libre de ladite portion d’étanchéité dudit joint d’étanchéité forme une étanchéité dynamique avec le capot d’appui supérieur, cette étanchéité dynamique pouvant être par contact glissant avec une portion de surface intérieure du capot d’appui supérieur ou par labyrinthe. Par « étanchéité dynamique », on entend une étanchéité entre deux pièces susceptibles d’avoir mouvement relatif. Ladite portion d’étanchéité dudit joint d’étanchéité permet de stopper le flux d’eau et de le renvoyer à l’opposé du palier.The seal limits the intrusion of dust, water and other types of polluting particles inside the bearing. The free end part of said sealing portion of said seal forms a dynamic seal with the upper support cover, this dynamic seal possibly being by sliding contact with a portion of the inner surface of the upper support cover or by labyrinth. By “dynamic sealing”, we mean a sealing between two parts likely to have relative movement. Said sealing portion of said seal makes it possible to stop the flow of water and to return it to the opposite side of the bearing.

La portion de fixation permet d’assurer une liaison mécanique dudit joint d’étanchéité avec le capot de support inférieur afin de limiter tout déplacement relatif en translation ou en rotation. Le maintien en position du joint d’étanchéité est assuré lorsque le dispositif de butée de suspension est en fonctionnement pour assurer la fonction d’étanchéité de l’espace annulaire défini entre les capots d’appui supérieur et de support inférieur dans lequel est logé le palier.The fixing portion makes it possible to ensure a mechanical connection of said seal with the lower support cover in order to limit any relative movement in translation or in rotation. The maintenance in position of the seal is ensured when the suspension thrust bearing device is in operation to ensure the sealing function of the annular space defined between the upper support and lower support covers in which the bearing.

Le talon d’appui permet la mise en position du joint d’étanchéité par rapport au capot de support inférieur. La position du joint d’étanchéité dans l’espace défini entre les capots est précise et optimisée pour assurer l’efficacité de l’étanchéité de la portion d’étanchéité par rapport au capot d’appui supérieur.The support heel allows the position of the seal with respect to the lower support cover. The position of the seal in the space defined between the covers is precise and optimized to ensure effective sealing of the sealing portion in relation to the upper support cover.

Selon des aspects avantageux mais non obligatoires de l’invention, un tel dispositif de butée de suspension peut incorporer une ou plusieurs des caractéristiques suivantes prises dans toute combinaison techniquement admissible :According to advantageous but non-obligatory aspects of the invention, such a suspension thrust bearing device may incorporate one or more of the following characteristics taken in any technically permissible combination:

  • La portion d’étanchéité du joint d’étanchéité consiste en au moins une lèvre en contact glissant avec une portion de surface intérieure du capot d’appui supérieur.The sealing portion of the seal consists of at least one lip in sliding contact with an inner surface portion of the upper bearing cover.
  • La au moins une lèvre a une extrémité libre en contact radial avec une portion de surface intérieure axiale du capot d’appui supérieur.The at least one lip has a free end in radial contact with an axial inner surface portion of the upper bearing cover.
  • La au moins une lèvre a une extrémité libre en contact axial avec une portion de surface intérieure radiale du capot d’appui supérieur.The at least one lip has a free end in axial contact with a radial inner surface portion of the upper bearing cover.
  • La au moins une lèvre a une extrémité libre pourvue d’un bourrelet en saillie et en contact avec une portion de surface intérieure du capot d’appui supérieur.The at least one lip has a free end provided with a bead projecting and in contact with an inner surface portion of the upper bearing cover.
  • La au moins une lèvre s’étend radialement.The at least one lip extends radially.
  • La portion d’étanchéité est annulaire.The sealing portion is annular.
  • Le bourrelet est annulaire.The bead is annular.
  • Le capot de support inférieur comprend un rebord en saillie axiale en direction du capot d’appui supérieur, ledit rebord étant pourvu d’une rainure circonférentielle ouverte radialement face à la jupe extérieure du capot d’appui supérieur, la portion de fixation du joint d’étanchéité étant au moins en partie logée dans ladite rainure.The lower support cover comprises a flange projecting axially in the direction of the upper support cover, said flange being provided with a circumferential groove open radially facing the outer skirt of the upper support cover, the fixing portion of the gasket sealing being at least partly housed in said groove.
  • La portion de fixation comprend une languette axiale et un crochet en saillie radiale logé dans la rainure annulaire circonférentielle, ledit crochet définissant un rebord en retenue axiale avec une paroi de ladite rainure.The fixing portion comprises an axial tab and a radially projecting hook housed in the circumferential annular groove, said hook defining a rim in axial restraint with a wall of said groove.
  • Le rebord du capot de support inférieur est annulaire.The rim of the lower support cover is annular.
  • La portion de fixation est annulaire.The attachment portion is annular.
  • La portion de fixation comprend une pluralité de sections réparties circonférentiellement.The attachment portion includes a plurality of circumferentially distributed sections.
  • Le talon est situé radialement entre la portion d’étanchéité et la portion de fixation du joint d’étanchéité.The heel is located radially between the sealing portion and the fastening portion of the seal.
  • Le talon est annulaire.The heel is annular.
  • Le talon comprend une pluralité de sections réparties circonférentiellement.The bead includes a plurality of circumferentially distributed sections.
  • Une rainure ouverte axialement vers le capot de support inférieur est définie entre le talon et la portion de fixation.A groove open axially towards the lower support cover is defined between the heel and the attachment portion.
  • Un creux annulaire est défini entre la au moins une lèvre radiale de la portion d’étanchéité et le talon axial.An annular hollow is defined between the at least one radial lip of the sealing portion and the axial heel.
  • Le corps du capot de support inférieur est en matière plastique de type polyamide (par exemple PA6 à PA6.6), pouvant être éventuellement renforcé de fibre de verre (par exemple GF 30 à 60).The body of the lower support cover is made of plastic material of the polyamide type (for example PA6 to PA6.6), which can optionally be reinforced with fiberglass (for example GF 30 to 60).
  • Le joint d’étanchéité est en matériau rigide, par exemple en polyoxyméthylène (POM).The seal is made of a rigid material, for example polyoxymethylene (POM).
  • Le joint d’étanchéité est en matière polymère, par exemple en élastomère thermoplastique (TPE).The seal is made of polymer material, for example thermoplastic elastomer (TPE).
  • Le palier est un palier à roulement comprenant une première bague supportée par une face supérieure de la portion de support radiale annulaire, une seconde bague supportée par une face inférieure du capot d’appui supérieur, et une pluralité d’éléments roulants logés entre lesdites bagues.The bearing is a rolling bearing comprising a first ring supported by an upper face of the annular radial support portion, a second ring supported by a lower face of the upper support cover, and a plurality of rolling elements housed between said rings .
  • La face supérieure de la portion de support radiale annulaire comprend une saillie axiale annulaire pourvue d’une surface concave annulaire en concordance de forme et formant support de la première bague du palier à roulement.The upper face of the annular radial support portion comprises an annular axial projection provided with an annular concave surface in matching shape and forming a support for the first ring of the rolling bearing.

Brève description des figuresBrief description of figures

La présente invention sera mieux comprise à l’étude de la description détaillée de modes de réalisation, pris à titre d’exemples nullement limitatifs et illustrés par les dessins annexés sur lesquels :The present invention will be better understood on studying the detailed description of embodiments, taken by way of non-limiting examples and illustrated by the appended drawings in which:

est une vue en coupe d’un dispositif de butée de suspension selon l’invention, et is a sectional view of a suspension thrust bearing device according to the invention, and

est une vue en coupe de détail d’un joint d’étanchéité du dispositif de la . is a detail sectional view of a seal of the device of the .

Claims (8)

Dispositif de butée de suspension (10) comprenant un capot de support inférieur (16), un capot d’appui supérieur (14), au moins un palier (18) disposé entre une surface supérieure (34) du capot de support inférieur (16) et une surface inférieure (17) du capot d’appui supérieur (14), et au moins un joint d’étanchéité annulaire (32) disposé radialement au moins en partie entre une jupe extérieure (14c) du capot d’appui supérieur (14) et le palier (18),
caractérisé en ce que le joint d’étanchéité (32) comprend une portion de fixation (40) solidaire par liaison mécanique au capot de support inférieur (16), une portion d’étanchéité (42) s’étendant depuis la portion de fixation (40) en direction du capot d’appui supérieur (14), et un talon (44) s’étendant axialement depuis la portion d’étanchéité (42) et venant en appui contre une portion (34a) de la surface supérieure (34) du capot de support inférieur (16), ledit joint d’étanchéité (32) étant formé monobloc.Suspension thrust bearing device (10) comprising a lower support cover (16), an upper bearing cover (14), at least one bearing (18) disposed between an upper surface (34) of the lower support cover (16 ) and a lower surface (17) of the upper support cover (14), and at least one annular seal (32) arranged radially at least partly between an outer skirt (14c) of the upper support cover ( 14) and the bearing (18),
characterized in that the seal (32) comprises an attachment portion (40) secured by mechanical connection to the lower support cover (16), a sealing portion (42) extending from the attachment portion ( 40) towards the upper support cover (14), and a heel (44) extending axially from the sealing portion (42) and bearing against a portion (34a) of the upper surface (34) of the lower support cover (16), said seal (32) being formed in one piece. Dispositif selon la revendication 1, dans lequel la portion d’étanchéité (42) du joint d’étanchéité (32) consiste en au moins une lèvre s’étendant radialement et en contact glissant avec une portion de surface intérieure du capot d’appui supérieur (14).Device according to Claim 1, in which the sealing portion (42) of the seal (32) consists of at least one lip extending radially and in sliding contact with an inner surface portion of the upper bearing cover (14). Dispositif selon la revendication 2, dans lequel la au moins une lèvre (42) a une extrémité libre pourvue d’un bourrelet (42a) en saillie et en contact avec une portion de surface intérieure du capot d’appui supérieur (14).Device according to Claim 2, in which the at least one lip (42) has a free end provided with a bead (42a) projecting and in contact with an inner surface portion of the upper bearing cover (14). Dispositif selon l’une quelconque des revendications précédentes, dans lequel le capot de support inférieur (16) comprend un rebord (46) en saillie axiale en direction du capot d’appui supérieur (14), ledit rebord (46) étant pourvu d’une rainure circonférentielle (46a) ouverte radialement face à la jupe extérieure (14c) du capot d’appui supérieur (14), la portion de fixation (40) du joint d’étanchéité (32) étant au moins en partie logée dans ladite rainure (46a).Device according to any one of the preceding claims, in which the lower support cover (16) comprises a flange (46) projecting axially in the direction of the upper bearing cover (14), the said flange (46) being provided with a circumferential groove (46a) open radially facing the outer skirt (14c) of the upper bearing cover (14), the fixing portion (40) of the seal (32) being at least partly housed in said groove (46a). Dispositif selon la revendication 4, dans lequel la portion de fixation (40) comprend une languette axiale (40a) et un crochet (40b) en saillie radiale logé dans la rainure annulaire circonférentielle (46a), ledit crochet (40b) définissant un rebord (40c) en retenue axiale avec une paroi de ladite rainure (46a).Device according to Claim 4, in which the fixing portion (40) comprises an axial tongue (40a) and a hook (40b) projecting radially housed in the circumferential annular groove (46a), said hook (40b) defining a rim ( 40c) in axial restraint with a wall of said groove (46a). Dispositif selon l’une quelconque des revendications précédentes, dans lequel, le talon (44) est situé radialement entre la portion d’étanchéité (42) et la portion de fixation (40) du joint d’étanchéité (32).Device according to any one of the preceding claims, in which the heel (44) is located radially between the sealing portion (42) and the fixing portion (40) of the seal (32). Dispositif selon la revendication 6, dans lequel une rainure (50) ouverte axialement vers le capot de support inférieur (16) est définie entre le talon (44) et la portion de fixation (40).Device according to Claim 6, in which a groove (50) open axially towards the lower support cover (16) is defined between the heel (44) and the fixing portion (40). Dispositif l’une quelconque des revendications 6 ou 7, dans lequel la portion d’étanchéité (42) du joint d’étanchéité (32) consiste en au moins une lèvre s’étendant radialement, un creux annulaire (52) étant défini entre ladite lèvre (42) radiale et le talon (44) axial.Apparatus according to any of claims 6 or 7, wherein the sealing portion (42) of the gasket (32) consists of at least one radially extending lip, an annular recess (52) being defined between said radial lip (42) and axial heel (44).
FR2108003A 2021-07-23 2021-07-23 Sealed suspension stopper device Pending FR3125498A1 (en)

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FR2108003A FR3125498A1 (en) 2021-07-23 2021-07-23 Sealed suspension stopper device

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Cited By (2)

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US20220024273A1 (en) * 2020-07-21 2022-01-27 Aktiebolaget Skf Suspension thrust bearing device with dust boot retainer
US20230025440A1 (en) * 2021-07-23 2023-01-26 Aktiebolaget Skf Suspension abutment device with seal

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FR2918139A1 (en) * 2007-06-29 2009-01-02 Snr Roulements Sa Bump stop for steering wheel of motor vehicle, has sealing element connected to cover and in friction contact with support or washers, where washers respectively have interior axial rigidification faces
FR2936580A1 (en) * 2008-09-26 2010-04-02 Skf Ab STOPPER OF SUSPENSION AND LEG OF ASSOCIATED FORCE
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US20160089946A1 (en) * 2014-09-30 2016-03-31 Aktiebolaget Skf Suspension bearing device, motor vehicle equipped with such a strut bearing device and manufacturing method
FR3075103A1 (en) * 2017-12-20 2019-06-21 Aktiebolaget Skf SUSPENSION STOP DEVICE AND FORCE LEG EQUIPPED WITH SUCH A DEVICE
CN111503138A (en) * 2020-06-05 2020-08-07 嘉兴欧治汽车技术有限公司 Bidirectional sealed suspension bearing assembly
DE102020201405A1 (en) * 2020-02-05 2021-08-05 Aktiebolaget Skf Suspension thrust bearing device with blocked seal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2918139A1 (en) * 2007-06-29 2009-01-02 Snr Roulements Sa Bump stop for steering wheel of motor vehicle, has sealing element connected to cover and in friction contact with support or washers, where washers respectively have interior axial rigidification faces
FR2936580A1 (en) * 2008-09-26 2010-04-02 Skf Ab STOPPER OF SUSPENSION AND LEG OF ASSOCIATED FORCE
DE202010008769U1 (en) * 2010-10-11 2012-01-13 Rollax Gmbh & Co. Kg Strut bearing for motor vehicles
US20160089946A1 (en) * 2014-09-30 2016-03-31 Aktiebolaget Skf Suspension bearing device, motor vehicle equipped with such a strut bearing device and manufacturing method
FR3075103A1 (en) * 2017-12-20 2019-06-21 Aktiebolaget Skf SUSPENSION STOP DEVICE AND FORCE LEG EQUIPPED WITH SUCH A DEVICE
DE102020201405A1 (en) * 2020-02-05 2021-08-05 Aktiebolaget Skf Suspension thrust bearing device with blocked seal
CN111503138A (en) * 2020-06-05 2020-08-07 嘉兴欧治汽车技术有限公司 Bidirectional sealed suspension bearing assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220024273A1 (en) * 2020-07-21 2022-01-27 Aktiebolaget Skf Suspension thrust bearing device with dust boot retainer
US11833872B2 (en) * 2020-07-21 2023-12-05 Aktiebolaget Skf Suspension thrust bearing device with dust boot retainer
US20230025440A1 (en) * 2021-07-23 2023-01-26 Aktiebolaget Skf Suspension abutment device with seal
US11958325B2 (en) * 2021-07-23 2024-04-16 Aktiebolaget Skf Suspension abutment device with seal

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