FR2717542A1 - Bellowed protective sleeve for articulated joint of vehicle transmission shafts - Google Patents

Bellowed protective sleeve for articulated joint of vehicle transmission shafts Download PDF

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Publication number
FR2717542A1
FR2717542A1 FR9403498A FR9403498A FR2717542A1 FR 2717542 A1 FR2717542 A1 FR 2717542A1 FR 9403498 A FR9403498 A FR 9403498A FR 9403498 A FR9403498 A FR 9403498A FR 2717542 A1 FR2717542 A1 FR 2717542A1
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France
Prior art keywords
bellows
protective sheath
sheath according
articulated joint
elements
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Granted
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FR9403498A
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French (fr)
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FR2717542B1 (en
Inventor
Mersch Patrick
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Individual
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Individual
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Priority to FR9403498A priority Critical patent/FR2717542B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
    • 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
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/041—Non-metallic bellows
    • F16J3/042—Fastening details

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

The sleeve is formed from a flexible conical tube with a central undulated extendable part which forms a bellows (3). It has two ends (1,2) which can be fixed and sealed on the two half shafts of an articulated joint. The bellows central part is conical and has undulations (4) forming a single spiral. The spiral is arranged so that, under the effect of centrifugal force, the grease contained in the sleeve is driven in the direction of greatest diameter towards the area where the mechanics of the articulated joint are located. The two ends are each composed of a series of successive cylindrical parts, of increasing internal diameter, connected together by flexible undulations. These cylindrical parts have external grooves which take a locking collar for sealing the assembly.

Description

GAINE PROTECTRICE A SOUFFLET POUR JOINT
ARTICULÉ D'ARBRE DE TRANSMISSION
La présente invention a pour objet une gaine protectrice à soufflet pour joint articulé d'arbre de transmission.BELLOWS PROTECTIVE SHEATH FOR JOINT
TRANSMISSION SHAFT ARTICULATED
The present invention relates to a protective bellows sheath for an articulated joint of a drive shaft.

Elle est destinée à être disposée autour des joints lubrifiés de type "cardan" ou homocinétiques utilisés pour transmettre un mouvement de rotation à des organes mobiles, en particulier dans le domaine des véhicules routiers automobiles. It is intended to be arranged around lubricated joints of the "gimbal" or constant velocity type used to transmit a rotational movement to mobile members, in particular in the field of road motor vehicles.

I1 existe à ce jour une très grande variété de soufflets protecteurs pour cardans de transmissions ou joints homocinétiques; ils servent, d'une part, à protéger les joints et articulations contre les corps étrangers, chocs et autres éléments extérieurs et, d'autre part, à contenir de manière étanche la masse lubrifiante dont le joint articulé a besoin pour durer. To date, there is a very wide variety of protective bellows for universal joints or constant velocity joints; they serve, on the one hand, to protect the joints and joints against foreign bodies, shocks and other external elements and, on the other hand, to contain in a leaktight manner the lubricating mass which the articulated joint needs to last.

Les soufflets sont soumis A des déformations constantes, en longueur et en inclinaison, tout en étant soumis à des rotations de vitesse très variable.The bellows are subjected to constant deformations, in length and in inclination, while being subjected to rotations of very variable speed.

La grande majorité des soufflets sont spécifiques à chaque application, notamment pour l'équipement des véhicules automobiles neufs. The vast majority of bellows are specific to each application, in particular for equipping new motor vehicles.

Pour reduire le nombre de références sur le marché du remplacement, certains modèles de soufflets existants sont universels", c'est-8-dire peuvent autre montés sur une large gamme de véhicules présentant différents diamètres et longueurs de joints articulés. To reduce the number of references on the replacement market, some existing bellows models are universal ", that is to say, they can also be mounted on a wide range of vehicles with different diameters and lengths of articulated joints.

Cette "universalité" est obtenue au moyen de matières souples et de formes coniques avec ondulations et zones de fixations pour colliers de serrage exécutées de sorte que l'ensemble est adaptable à toutes sortes de diamètres et longueurs. Voir par exemple les brevets NO DE 3 324 997, GB 2 156 452, EP 0 403 163 et DE 2 205 798.This "universality" is obtained by means of flexible materials and conical shapes with corrugations and fixing zones for cable ties executed so that the assembly is adaptable to all kinds of diameters and lengths. See for example the patents NO DE 3 324 997, GB 2 156 452, EP 0 403 163 and DE 2 205 798.

I1 existe par ailleurs une exécution de soufflet dont la zone centrale n'est pas simplement ondulée, mais en forme de spirale. Cette configuration se trouve décrite dans le brevet DE 1 983 864, mais son application est réservée à des éléments mécaniques dont l'un est fixe et l'autre soumis uniquement à des rotations axiales limitées, la spirale souple servant à absorber la torsion entre deux éléments. En tout état de cause, la zone ondulée est dans ce cas cylindrique et non conique. I1 also exists a bellows version whose central area is not simply wavy, but in the form of a spiral. This configuration is described in patent DE 1 983 864, but its application is reserved for mechanical elements, one of which is fixed and the other subjected only to limited axial rotations, the flexible spiral serving to absorb the torsion between two elements. In any event, the corrugated zone is in this case cylindrical and not conical.

Que la gaine soit cylindrique ou conique, la matière lubrifiante a tendance, sous l'effet de la force centrifuge, à s'écarter des parties du joint proches de l'axe de rotation, ce qui, en cas de fuite ou de mauvais remplissage, peut compromettre sérieusement le fonctionnement ou la durée du dispositif. Whether the sheath is cylindrical or conical, the lubricating material tends, under the effect of centrifugal force, to move away from the parts of the seal close to the axis of rotation, which, in the event of leakage or improper filling , can seriously compromise the functioning or the duration of the device.

Le dispositif selon la présente invention a pour objectif de remédier à cet état de choses. Il permet en effet de réaliser des gaines protectrices pour joints d'arbre de transmission dans lesquelles, plus la vitesse de rotation est élevée, plus la graisse est entraînée en direction du plus grand diamètre de la gaine, vers la zone où se trouvent les éléments mécaniques qui ont besoin de graissage (joints, roulements, etc). The device according to the present invention aims to remedy this state of affairs. It makes it possible to produce protective sheaths for drive shaft seals in which, the higher the speed of rotation, the more the grease is drawn towards the largest diameter of the sheath, towards the area where the elements are located. mechanical that need lubrication (seals, bearings, etc.).

I1 est constitué d'un élément tubulaire conique en caoutchouc ou élastomère souple formé d'une partie centrale avec ondulations en spirale et de deux extrémités comportant l'une et l'autre des zones de fixation de diamètres différents permettant d'adapter une même gaine à plusieures dimensions de joints articulés. I1 consists of a conical tubular element made of rubber or flexible elastomer formed by a central part with spiral undulations and by two ends each having fixing zones of different diameters allowing the same sheath to be adapted with several dimensions of articulated joints.

Sur les dessins annexés, donnés à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'invention:
la figure 1 représente le dispositif vu de côté,
la figure 2 est une coupe axiale suivant les flèches A-A de la figure précédente, et
la figure 3 est un détail agrandi de la figure 2 montrant des variantes de réalisation.In the accompanying drawings, given by way of nonlimiting example of one of the embodiments of the subject of the invention:
FIG. 1 represents the device seen from the side,
FIG. 2 is an axial section along the arrows AA of the previous figure, and
Figure 3 is an enlarged detail of Figure 2 showing alternative embodiments.

Le dispositif, figures 1 et 2, est constitué d'une gaine ou manchon conique réalisé dans un matériau souple résistant aux lubrifiants, tel que caoutchouc ou élastomère, et comportant trois parties: deux extrémités 1, 2 permettant de fixer de manière étanche ledit manchon sur chacun des deux demi-arbres accouplés au joint articulé, et un soufflet 3 central déformable et extensible, l'ensemble étant rempli de graisse destinée à lubrifier le éléments mécaniques du joint articulé. The device, FIGS. 1 and 2, consists of a conical sheath or sleeve made of a flexible material resistant to lubricants, such as rubber or elastomer, and comprising three parts: two ends 1, 2 allowing said sleeve to be sealed on each of the two half-shafts coupled to the articulated joint, and a deformable and extensible central bellows 3, the assembly being filled with grease intended to lubricate the mechanical elements of the articulated joint.

Le soufflet 3 présente la particularité d'être à la fois conique et pourvu d'ondulations 4 formant une spirale unique. The bellows 3 has the particularity of being both conical and provided with corrugations 4 forming a single spiral.

L'avantage de la forme en spirale est significative: la rotation de la transmission, y compris donc du soufflet central 3 et de la graisse incluse, entraîne cette dernière, sous l'effet de la force centrifuge, à suivre la spirale en direction du plus grand diamètre (extrémité 2). C'est précisément dans cette zone que se trouvent les éléments mécaniques qui ont besoin de graissage (joints, roulements, etc). Cet effet augmente avec la vitesse de rotation.  The advantage of the spiral shape is significant: the rotation of the transmission, including therefore the central bellows 3 and the grease included, causes the latter, under the effect of centrifugal force, to follow the spiral towards the larger diameter (end 2). It is precisely in this area that there are the mechanical elements that need lubrication (seals, bearings, etc.). This effect increases with the speed of rotation.

Les extrémités 1, 2 forment respectivement des zones de fixation universelles de petit et de grand diamètre, et sont chacune composées d'une série d'éléments sensiblement cylindriques successifs 5, 6, 7 et 5', 6', 7', de diamètres internes croissants et pourvus de gorges externes 8 destinées à recevoir un collier de serrage assurant l'étanchéité de l'ensemble. The ends 1, 2 respectively form universal fixing zones of small and large diameter, and are each composed of a series of successively substantially cylindrical elements 5, 6, 7 and 5 ', 6', 7 ', of diameters increasing internal and provided with external grooves 8 intended to receive a clamp ensuring the tightness of the assembly.

Ces éléments cylindriques pourront être reliés les uns aux autres par des ondulations déformables 9 et seront avantageusement agencés de façon à permettre de couper aisément les parties inutiles se trouvant au-delà du collier de serrage, grâce à des bourrelets périphériques 11 servant de repères de découpage et d'aide au positionnement du collier de serrage. Ces bourrelets peuvent être pleins ou creux; ils peuvent éventuellement être interrompus et donc ne pas s'étendre sur toute la circonférence de la zone de fixation.These cylindrical elements can be connected to each other by deformable corrugations 9 and will advantageously be arranged so as to allow easy cutting of the unnecessary parts lying beyond the clamp, by means of peripheral beads 11 serving as cutting marks. and help positioning the clamp. These beads can be full or hollow; they may possibly be interrupted and therefore not extend over the entire circumference of the attachment zone.

Les surfaces extérieures d'appui des colliers de serrage pourront être lisses, ou au contraire être pourvues de rainures circulaires 10 transmettant des compressions différenciées conduisant à une meilleure étanchéité. The external bearing surfaces of the clamps can be smooth, or on the contrary be provided with circular grooves 10 transmitting differentiated compressions leading to better sealing.

La surface intérieure des zones de fixation peut indifféremment être lisse, ondulée ou munie de différentes nervures d'accrochage ou d'étanchéité 12 selon la configuration des transmissions qui sont susceptibles d'évoluer, en particulier dans le domaine automobile. The inner surface of the attachment zones can either be smooth, wavy or provided with different attachment or sealing ribs 12 depending on the configuration of the transmissions which are liable to change, in particular in the automotive field.

Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires.  The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.

Claims (4)

REVENDICATIONS 10. Gaine protectrice à soufflet pour joint articulé d'arbre de transmission, destinée à contenir la graisse nécessaire aux joints lubrifiés utilisés pour transmettre un mouvement de rotation à des organes mobiles en particulier dans le domaine des véhicules automobiles, constituée d'un élément tubulaire conique en matériau souple pouvant être fixé de manière étanche autour du joint et composé d'une partie centrale ondulée déformable et extensible formant un soufflet (3), et de deux extrémités (1, 2) permettant une fixation étanche sur les deux demi-arbres accouplés au joint articulé, 10. Protective bellows sheath for articulated drive shaft seal, intended to contain the grease necessary for lubricated seals used to transmit a rotational movement to moving parts in particular in the field of motor vehicles, consisting of a tubular element conical in flexible material which can be fixed tightly around the joint and composed of a deformable and extensible corrugated central part forming a bellows (3), and of two ends (1, 2) allowing a tight fixing on the two half-shafts coupled to the articulated joint, caractérisé en ce que le soufflet (3) constituant la partie centrale est à la fois conique et pourvu d'ondulations (4) formant une spirale unique agencée de manière à ce que, sous l'effet de la force centrifuge, la graisse contenue dans la gaine soit entraînée en direction du plus grand diamètre vers la zone où se trouvent les éléments mécaniques du joint articulé. characterized in that the bellows (3) constituting the central part is both conical and provided with undulations (4) forming a single spiral arranged so that, under the effect of centrifugal force, the fat contained in the sheath is driven in the direction of the largest diameter towards the area where the mechanical elements of the articulated joint are located. 20. Gaine protectrice selon la revendication 1, se caractérisant par le fait que les deux extrémités (1, 2) sont chacune composées d'une série d'éléments sensiblements cylindriques successifs (5, 6, 7 et 5', 6', 7') de diamètres internes croissants et pourvus de gorges externes (8) aptes à recevoir un collier de serrage assurant 1'étanchéité de 1'ensemble. 20. Protective sheath according to claim 1, characterized in that the two ends (1, 2) are each composed of a series of sensibly cylindrical successive elements (5, 6, 7 and 5 ', 6', 7 ') of increasing internal diameters and provided with external grooves (8) capable of receiving a clamp ensuring the tightness of the assembly. 30. Gaine protectrice selon la revendication 2, se caractérisant par le fait que les éléments cylindriques (5, 6, 7 et 5', 6', 7') sont reliés les uns aux autres par des ondulations déformables (9).  30. Protective sheath according to claim 2, characterized in that the cylindrical elements (5, 6, 7 and 5 ', 6', 7 ') are connected to each other by deformable corrugations (9). 40. Gaine protectrice selon l'une quelconque des revendications 2 et 3, se caractérisant par le fait que les éléments cylindriques (5, 6, 7 et 5', 6', 7') comportent des bourrelets périphériques (11) pleins ou creux servant d'aide au positionnement du collier de serrage, et facilitant la découpe des parties inutiles se trouvant au-delà du collier de serrage. 40. Protective sheath according to any one of claims 2 and 3, characterized in that the cylindrical elements (5, 6, 7 and 5 ', 6', 7 ') comprise peripheral or full beads (11) serving as a positioning aid for the clamp, and facilitating the cutting of unnecessary parts beyond the clamp. 5 . Gaiîne protectrice selon la revendication 4, se caractérisant par le fait que les bourrelets périphériques (11) sont interrompus, c'est-à- dire qu'ils ne s'étendent pas sur toute la circonférence des éléments cylindriques. 5. Protective sheath according to claim 4, characterized in that the peripheral beads (11) are interrupted, that is to say that they do not extend over the entire circumference of the cylindrical elements. 60. Gaine protectrice selon l'une quelconque des revendications 2 à 5, se caractérisant par le fait que la surface intérieure des éléments cylindriques (5, 6, 7 et 5', 6', 7') comporte des nervures d'accrochage ou d'étanchéité (12). 60. Protective sheath according to any one of claims 2 to 5, characterized in that the internal surface of the cylindrical elements (5, 6, 7 and 5 ', 6', 7 ') has hooking ribs or sealing (12). 70. Gaine protectrice selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les surfaces extérieures d'appui des colliers de serrage sont pourvues de rainures circulaires (10) aptes à transmettre des compressions différenciées améliorant lfétanchéité.  70. Protective sheath according to any one of the preceding claims, characterized in that the external bearing surfaces of the clamps are provided with circular grooves (10) capable of transmitting differentiated compressions improving the seal.
FR9403498A 1994-03-18 1994-03-18 Protective bellows sheath for articulated drive shaft seal. Expired - Fee Related FR2717542B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9403498A FR2717542B1 (en) 1994-03-18 1994-03-18 Protective bellows sheath for articulated drive shaft seal.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9403498A FR2717542B1 (en) 1994-03-18 1994-03-18 Protective bellows sheath for articulated drive shaft seal.

Publications (2)

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FR2717542A1 true FR2717542A1 (en) 1995-09-22
FR2717542B1 FR2717542B1 (en) 1997-09-05

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023143A1 (en) * 1995-01-24 1996-08-01 Yamajany (S.N.C) Flexible protective sleeve for rotary joints and hinges
FR2742196A1 (en) * 1995-12-12 1997-06-13 Gkn Glaenzer Spicer Sealing connection between motor vehicle transmission shafts
WO1997026473A1 (en) * 1996-01-17 1997-07-24 Phillip Fields Hayward Protective gaiters for joints
FR2759137A1 (en) * 1997-02-03 1998-08-07 Bouquerel Gilles Protective bellows for rack and pinion unit of motor vehicle steering column
FR2771145A1 (en) * 1997-11-19 1999-05-21 Car X Supple corrugated boot for covering lubricated joint, used in vehicles
EP1022496A3 (en) * 1999-01-19 2001-03-07 Wolfgang Didszuhn Sealing sleeve for hinge connection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR915598A (en) * 1944-07-27 1946-11-12 Bendix Aviat Corp Sealing device for universal joints
GB2156452A (en) * 1984-03-29 1985-10-09 Philip Fields Hayward Protective gaiters for joints

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR915598A (en) * 1944-07-27 1946-11-12 Bendix Aviat Corp Sealing device for universal joints
GB2156452A (en) * 1984-03-29 1985-10-09 Philip Fields Hayward Protective gaiters for joints

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996023143A1 (en) * 1995-01-24 1996-08-01 Yamajany (S.N.C) Flexible protective sleeve for rotary joints and hinges
FR2742196A1 (en) * 1995-12-12 1997-06-13 Gkn Glaenzer Spicer Sealing connection between motor vehicle transmission shafts
WO1997026473A1 (en) * 1996-01-17 1997-07-24 Phillip Fields Hayward Protective gaiters for joints
GB2323899A (en) * 1996-01-17 1998-10-07 Phillip Fields Hayward Protective gaiters for joints
GB2323899B (en) * 1996-01-17 1999-06-23 Phillip Fields Hayward Protective gaiters for joints
AU731440B2 (en) * 1996-01-17 2001-03-29 Phillip Fields Hayward Protective gaiters for joints
FR2759137A1 (en) * 1997-02-03 1998-08-07 Bouquerel Gilles Protective bellows for rack and pinion unit of motor vehicle steering column
FR2771145A1 (en) * 1997-11-19 1999-05-21 Car X Supple corrugated boot for covering lubricated joint, used in vehicles
WO1999025985A1 (en) * 1997-11-19 1999-05-27 Yamajany (Sarl) Universal flexible sheath with bellow for articulated joint and equipment for fixing same
EP1022496A3 (en) * 1999-01-19 2001-03-07 Wolfgang Didszuhn Sealing sleeve for hinge connection

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