FR2588218A1 - Device for individually driving an independent drive wheel in a vehicle - Google Patents
Device for individually driving an independent drive wheel in a vehicle Download PDFInfo
- Publication number
- FR2588218A1 FR2588218A1 FR8613787A FR8613787A FR2588218A1 FR 2588218 A1 FR2588218 A1 FR 2588218A1 FR 8613787 A FR8613787 A FR 8613787A FR 8613787 A FR8613787 A FR 8613787A FR 2588218 A1 FR2588218 A1 FR 2588218A1
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- Prior art keywords
- shaft
- box
- joints
- angle
- articulations
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Classifications
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- 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
- F16D11/00—Clutches in which the members have interengaging parts
- F16D11/08—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially
- F16D11/12—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially with clutching members movable otherwise than only axially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
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- 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
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
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- 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
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D3/226—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part
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- 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
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D2003/22323—Attachments to the shaft of the inner joint member whereby the attachments are distanced from the core
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- 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
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D2003/22326—Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
Description
DISPOSITIF D'ENTRAINEMENT INDIVIDUEL D'UNE ROUE MOTRICE
INDEPENDANTE DANS UN VEHICULE.DEVICE FOR INDIVIDUAL DRIVE OF A DRIVE WHEEL
INDEPENDENT IN A VEHICLE.
La présente invention concerne un dispositif d'entraînement individuel d'une roue motrice indépendante au moyen d'un arbre rotatif inclinable raccordé par des articulations, d'une part à une boîte de répartition et d'autre part à une boîte de réduction qui est associée à la roue et qui présente une distance horizontale (A) et un décalage entre axes (H) par rapport à la boîte de répartition, les articulations respectives situées aux extrémités de l'arbre étant pourvues de pistes intérieures de roulement pour des billes, ces pistes se trouvant respectivement dans la partie centrale d'un moyeu solidaire d'un pignon respectif.The present invention relates to an individual drive device for an independent driving wheel by means of a tilting rotary shaft connected by articulations, on the one hand to a distribution box and on the other hand to a reduction box which is associated with the wheel and which has a horizontal distance (A) and an offset between axes (H) relative to the distribution box, the respective articulations situated at the ends of the shaft being provided with internal rolling tracks for balls, these tracks being located respectively in the central part of a hub secured to a respective pinion.
Par les publications WO-A-84/00412 et DE-A-3 446 271, on connaît des dispositifs d'entraînement de ce genre dans lesquels, malgré une faible distance horizontale entre la boîte de répartition et la boîte de-réduction,
L'arbre reliant ces boites présente à la fois une longueur utile relativement grande et un débattement vertical suffisant, grâce à l'intégration des articulations dans les boîtes respectives, de sorte que ces articulations ne nécessitent que des angles relativement petits. Ceci est avantageux aussi bien au point de vue du débattement maximal de la suspension qu'au point de vue de la protection des articulations contre des dégâts ou contre l'usure, parce qu'on peut ainsi utiliser toute la marge angulaire fonctionnelle des articulations.From publications WO-A-84/00412 and DE-A-3 446 271, drive devices of this type are known in which, despite a small horizontal distance between the distribution box and the reduction box,
The shaft connecting these boxes has both a relatively large useful length and sufficient vertical travel, thanks to the integration of the joints in the respective boxes, so that these joints require only relatively small angles. This is advantageous both from the point of view of the maximum deflection of the suspension and from the point of view of the protection of the joints against damage or against wear, because one can thus use all the functional angular margin of the joints.
Cependant, les angles d'articulation qu'on peut obtenir de cette manière ne sont pas toujours suffisants, notamment si certaines conditions constructives imposent que les arbres puissent prendre un angle d'inclinaison plus grand que ne le permettent les articulations utilisables, ou si la distance A entre les boites doit rester faible. Ceci peut aussi se produire par exemple si le véhicule a de grandes roues avec des arbres à cardan en position basse, ou de petites roues avec des arbres à cardan en position haute, ou encore s'il présente déjà au repos un grand angle permanent de l'articulation, même avec une distance horizontale relativement grande entre les deux boîtes.However, the articulation angles which can be obtained in this way are not always sufficient, in particular if certain constructive conditions impose that the shafts can take a greater angle of inclination than the usable articulations allow, or if the distance A between the boxes must remain small. This can also happen, for example, if the vehicle has large wheels with cardan shafts in the low position, or small wheels with cardan shafts in the high position, or if it already has a large permanent angle of rotation at rest. the joint, even with a relatively large horizontal distance between the two boxes.
L'exigence d'un angle de débattement encore plus grand dans les articulations pour s'adapter au débattement constamment variable de la suspension pendant la marche devient alors très difficile à satisfaire. The requirement for an even greater angle of travel in the joints to adapt to the constantly variable suspension travel during walking then becomes very difficult to satisfy.
L'invention a donc pour but de fournir un dispositif d'entraînement individuel du type indiqué plus haut, permettant un angle de débattement des articulations qui est aussi grand que possible lorsqu'il existe déjà un angle permanent important, notamment par suite décalage vertical relativement grand entre les axes des deux boîtes respectives reliées par l'arbre rotatif.The object of the invention is therefore to provide an individual drive device of the type indicated above, allowing a deflection angle of the joints which is as large as possible when there is already a large permanent angle, in particular as a result relatively vertical offset. large between the axes of the two respective boxes connected by the rotary shaft.
Dans ce but, le dispositif d'entraînement selon l'invention est caractérisé en ce que les articulations prévues aux extrémités de l'arbre comprennent chacune une paire d'articulations individuelles adjacentes l'une à l'autre et permettent, pendant que l'arbre transmet un couple, un angle total de déviation par rapport à l'axe de la boîte respective qui est au moins égal au double de l'angle d'une articulation unique.For this purpose, the drive device according to the invention is characterized in that the articulations provided at the ends of the shaft each comprise a pair of individual articulations adjacent to each other and allow, while the shaft transmits a torque, a total angle of deviation from the axis of the respective gearbox which is at least twice the angle of a single joint.
Dans les formes de réalisation préférées du dispositif, chacune desdites paires d'articulations comprend une articulation intérieure qui est située du côté du centre de gravité de l'arbre, et une articulation extérieure qui est solidaire en rotation dudit pignon entraîneur ou entraîné de la boîte respective, et l'arbre comprend un tronçon central reliant en rotation les deux articulations intérieures, et deux courts tronçons d'arbre intermédiaire reliant respectivement en rotation les deux articulations individuelles de chaque paire. Dans chaque paire d'articulations, I'articulation extérieure forme un angle respectif permanent qui correspond de préférence à l'angle maximal permis par cette articulation, et l'articulation intérieure permet un angle supplémentaire variable entre l'arbre intermédiaire respectif et le tronçon central de l'arbre.En outre, chaque arbre intermédiaire comporte à son extrémité extérieure les pistes intérieures de roulement des billes de l'articulation extérieure respective, et à son extrémité intérieure un moyeu entourant une cage de guidage des billes de l'articulation intérieure. Les articulations intérieures, et plus particulièrement leurs pistes intérieures de roulement des billes, sont maintenues en position au moyen d'un palier intermédiaire entourant l'arbre intermédiaire respectif, ce palier étant associé à des moyens d'étanchéité des articulations. Chaque arbre intermédiaire peut alors être disposé à l'intérieur d'un carter ou d'un couvercle de carter, monté sur la boîte respective du côté de l'arbre, l'arbre intermédiaire formant ledit angle permanent avec l'axe de rotation dudit pignon respectif de la boîte. In the preferred embodiments of the device, each of said pairs of articulations comprises an internal articulation which is situated on the side of the center of gravity of the shaft, and an external articulation which is rotationally integral with said driving pinion or driven from the gearbox respective, and the shaft comprises a central section connecting in rotation the two internal joints, and two short sections of intermediate shaft respectively connecting in rotation the two individual joints of each pair. In each pair of articulations, the external articulation forms a respective permanent angle which preferably corresponds to the maximum angle allowed by this articulation, and the internal articulation allows an additional variable angle between the respective intermediate shaft and the central section. In addition, each intermediate shaft has at its outer end the inner tracks for rolling the balls of the respective outer joint, and at its inner end a hub surrounding a cage for guiding the balls of the inner joint. The internal joints, and more particularly their internal ball rolling tracks, are held in position by means of an intermediate bearing surrounding the respective intermediate shaft, this bearing being associated with sealing means for the joints. Each intermediate shaft can then be placed inside a casing or a casing cover, mounted on the respective box on the side of the shaft, the intermediate shaft forming said permanent angle with the axis of rotation of said respective gear of the gearbox.
La présente invention et ses avantages ressortiront mieux de la description suivante d'une forme de réalisation préférée, en référence aux dessins annexés, dans lesquels
La fig. 1 représente schématiquement en coupe verticale une roue d'un véhicule et son dispositif d'entraînement selon l'invention, la fig. 2 représente en coupe verticale la partie du dispositif située du côté de la boîte de répartition, et la fig. 3 représente en coupe verticale la partie du dispositif située du côté de la roue.The present invention and its advantages will emerge more clearly from the following description of a preferred embodiment, with reference to the accompanying drawings, in which
Fig. 1 shows schematically in vertical section a wheel of a vehicle and its drive device according to the invention, FIG. 2 shows in vertical section the part of the device located on the side of the distribution box, and FIG. 3 shows in vertical section the part of the device located on the side of the wheel.
En référence à la fig. 1, une boîte de répartition 2, qui peut être un différentiel et qui se trouve à une hauteur libre B par rapport à la chaussée 1, entraîne au moyen d'un arbre rotatif articulé 3 une boîte de réduction 4 incorporée dans une roue, cette boîte de réduction présentant une distance horizontale A par rapport au centre de la boîte de répartition 2. En outre, I'axe 7 de la boîte de répartition 2 présente un décalage vertical ,dH par rapport à l'axe 7 de la boîte de réduction 4, ce décalage étant déterminé, pour une distance horizontale A donnée, par la valeur des angles respectifs os, ss de deux paires dtarticulations 5A, 5B et 5C, 5D de l'arbre 3, chacune de ces paires d'articulations étant raccordée à un pignon respectif 6 de la boîte respective 2, 4.Afin de permettre un angle total oc+P particulièrement grand, donc aussi un grand entr'axe vertical A H, les paires d'articulations 5 A+B et 5 C+D sont disposées le plus près possible du centre de la boîte respective 2,4 à laquelle elles sont associées. Entre elles, l'arbre comporte un tronçon central 3 relativement long, tandis qu'il comporte, entre l'articulation intérieure 5B, 5C et l'articulation extérieure 5A, 5D de chaque paire, un court tronçon intermédiaire 3A, 3B transmettant le couple de rotation entre ces deux articulations. Chacun de ces arbres intermédiaires 3A, 3B est monté dans un carter ou couvercle de carter 8A, 813 et il est maintenu par un palier intermédiaire 9 dans une position inclinée, en formant avec l'axe du pignon 6 respectif un angle permanent Oc qui peut être l'angle maximal admissible dans l'articulation concernée 5A, 5D. With reference to fig. 1, a distribution box 2, which can be a differential and which is at a free height B relative to the roadway 1, drives by means of an articulated rotary shaft 3 a reduction box 4 incorporated in a wheel, this reduction box having a horizontal distance A from the center of the distribution box 2. In addition, the axis 7 of the distribution box 2 has a vertical offset, dH with respect to the axis 7 of the reduction box 4, this offset being determined, for a given horizontal distance A, by the value of the respective angles os, ss of two pairs of joints 5A, 5B and 5C, 5D of the shaft 3, each of these pairs of joints being connected to a respective pinion 6 of the respective box 2, 4. In order to allow a particularly large total angle oc + P, therefore also a large vertical axis AH, the pairs of articulations 5 A + B and 5 C + D are arranged as close as possible to the center of the respective box 2.4 to which they are associated. Between them, the shaft has a relatively long central section 3, while it comprises, between the internal articulation 5B, 5C and the external articulation 5A, 5D of each pair, a short intermediate section 3A, 3B transmitting the torque of rotation between these two joints. Each of these intermediate shafts 3A, 3B is mounted in a casing or casing cover 8A, 813 and it is held by an intermediate bearing 9 in an inclined position, forming with the axis of the respective pinion 6 a permanent angle Oc which can be the maximum admissible angle in the joint concerned 5A, 5D.
La fig. 2 montre une forme de réalisation de la liaison entre la boîte de répartition 2 et le tronçon central de l'arbre 3, avec les deux articulations 5A et 5B reliées en rotation par le court arbre intermédiaire 3A. Le pignon 6, qui est ici un pignon conique de sortie d'un différentiel, est solidaire d'un moyeu 10A, dans lequel sont ménagées les pistes extérieures de roulement des billes 11 de l'articulation 5A. Ces billes sont guidées par une cage 12 et sont également engagées dans des pistes intérieures de roulement 13A prévues sur l'arbre intermédiaire 3A pour transmettre à celui-ci le couple de rotation provenant du pignon 6.D'autre part, l'arbre intermédiaire 3A est maintenu dans une position inclinée par un palier intermédiaire 9 monté obliquement, suivant l'angle permanent oC, ,dans un couvercle de carter 8A fixé directement au carter de la boîte 2, par exemple au moyen d'une collerette. L'arbre 3A se prolonge par un autre moyeu 10B comportant, sur sa surface intérieure, une denture qui constitue les pistes de roulement extérieures des billes 11 de l'articulation intérieure 5B. Ces billes sont également guidées par une cage 12 et engagées dans des pistes intérieures de roulement 13B solidaires du tronçon central 3 de l'arbre. Si les pistes de roulement sont formées par des rainures longitudinales, I'articulation 5B permet aussi des mouvements axiaux limités de l'arbre 3.Fig. 2 shows an embodiment of the connection between the distribution box 2 and the central section of the shaft 3, with the two joints 5A and 5B connected in rotation by the short intermediate shaft 3A. The pinion 6, which is here a bevel gear output from a differential, is integral with a hub 10A, in which the external tracks for rolling the balls 11 of the joint 5A are formed. These balls are guided by a cage 12 and are also engaged in internal rolling tracks 13A provided on the intermediate shaft 3A to transmit thereto the torque from the pinion 6.On the other hand, the intermediate shaft 3A is maintained in an inclined position by an intermediate bearing 9 mounted obliquely, at the permanent angle oC,, in a casing cover 8A fixed directly to the casing of the box 2, for example by means of a flange. The shaft 3A is extended by another hub 10B comprising, on its inner surface, a toothing which constitutes the outer rolling tracks of the balls 11 of the inner articulation 5B. These balls are also guided by a cage 12 and engaged in internal rolling tracks 13B secured to the central section 3 of the shaft. If the raceways are formed by longitudinal grooves, the joint 5B also allows limited axial movements of the shaft 3.
En référence à la fig.3, L'arbre 3 est également relié à l'axe horizontal de la boîte de réduction 4 par l'entremise d'une articulation extérieure 5D, ayant un angle fixe de déviation o(, , et d'une articulation intérieure 5C dans laquelle l'arbre 3 présente un angle variable ss et, si c'est nécessaire, peut éventuellement aussi avoir un jeu longitudinal. Dans l'articulation 5C, le couple de rotation est transmis du tronçon central de l'arbre 3 à l'arbre intermédiaire 3D grâce à des billes 11 guidées par une cage 12 et engagées dans des pistes intérieures de roulement 13C solidaires de l'arbre 3 et dans des pistes extérieures ménagées dans un moyeu 10C prolongeant l'arbre intermédiaire 3B. Celui-ci est monté dans un carter 8B au moyen d'un palier intermédiaire 9 disposé obliquement selon l'angle permanent Oc par rapport à l'axe horizontal 7 de la boîte 4.Dans le présente exemple, cet axe est celui de la roue centrale 14 du réducteur planétaire 4 et il est porté par un palier central 15 dans un carter d'essieu 16 qui entoure en grande partie l'articulation 5D et qui porte le carter additionnel 8B supportant le palier intermédiaire 9. Afin que les centres des articulations se trouvent aussi près que possible du centre du réducteur 4, le palier principal 17 monté sur le carter d'essieu 16 a un grand diamètre et il entoure sensiblement
I'articulation 5D.With reference to FIG. 3, the shaft 3 is also connected to the horizontal axis of the reduction box 4 by means of an external articulation 5D, having a fixed angle of deflection o (,, and d ' an internal articulation 5C in which the shaft 3 has a variable angle ss and, if necessary, can optionally also have a longitudinal clearance. In the articulation 5C, the torque is transmitted from the central section of the shaft 3 to the intermediate shaft 3D by means of balls 11 guided by a cage 12 and engaged in internal rolling tracks 13C integral with the shaft 3 and in external tracks provided in a hub 10C extending the intermediate shaft 3B. -this is mounted in a casing 8B by means of an intermediate bearing 9 disposed obliquely at the permanent angle Oc relative to the horizontal axis 7 of the box 4.In the present example, this axis is that of the central wheel 14 of the planetary gearbox 4 and it is carried by a central bearing 15 in an axle housing 16 which largely surrounds the joint 5D and which carries the additional housing 8B supporting the intermediate bearing 9. So that the centers of the joints are as close as possible to the center of the reduction gear 4, the main bearing 17 mounted on the axle housing 16 has a large diameter and it substantially surrounds
The 5D joint.
Comme les exemples décrits ci-dessus, les axes intermédiaires 3A et 3B du dispositif selon l'invention sont aussi courts que possible et ils sont aussi inclinés que le permet l'articulation extérieure 5A, 5D, selon un angle permanent que l'articulation supporte bien et pendant une longue durée. A l'autre extrémité de l'arbre intermédiaire, I'articulation intérieure 5B, 5C est avantageusement logée dans un boîtier qui peut être obturé par un moyen d'étanchéité connu, par exemple un soufflet, le tronçon central de l'arbre 3 étant mobile en inclinaison et éventuellement axialement dans cette articulation.Une telle disposition particulièrement compacte d'une paires d'articulations à chaque extrémité de l'arbre permet d'avoir, entre les deux boîtes reliées par cet arbre, un décalage entre axes a H qui est pratiquement le double de ce que permettent les dispositifs articulés traditionnels, sans que le couple admissible ou la durée de service soient réduits sensiblement. Bien que l'exemple décrit ci-dessus se réfère à un décalage vertical, ce décalage entre axes pourrait aussi bien être horizontal ou oblique.Like the examples described above, the intermediate axes 3A and 3B of the device according to the invention are as short as possible and they are as inclined as the external articulation 5A, 5D allows, at a permanent angle that the articulation supports well and for a long time. At the other end of the intermediate shaft, the internal articulation 5B, 5C is advantageously housed in a housing which can be closed by known sealing means, for example a bellows, the central section of the shaft 3 being movable in inclination and possibly axially in this articulation. Such a particularly compact arrangement of a pair of articulations at each end of the shaft makes it possible to have, between the two boxes connected by this shaft, an offset between axes a H which is practically double what traditional articulated devices allow, without the admissible torque or the service life being reduced appreciably. Although the example described above refers to a vertical offset, this offset between axes could as well be horizontal or oblique.
Au point de vue de la fabrication, un avantage particulier du dispositif est le fait que, malgré l'angle important entre l'arbre et les boîtes qu'il relie, celles-ci ne nécessitent pas d'exécution spéciale, mais simplement un carter complémentaire ou un couvercle spécial de carter pour porter l'arbre intermédiaire et l'articulation intérieure supplémentaire. Ces éléments additionnels peuvent aussi être installés après coup sur des boîtes reliées auparavant par un dispositif classique, dans le but de pouvoir augmenter le décalage entre les axes des boîtes, notamment si l'on veut augmenter le débattement de la suspension. Il suffit en fait de prévoir les points de fixation qui sont nécessaires. From a manufacturing point of view, a particular advantage of the device is the fact that, despite the large angle between the shaft and the boxes it connects, these do not require special execution, but simply a housing or a special casing cover to carry the intermediate shaft and the additional internal articulation. These additional elements can also be installed afterwards on boxes previously connected by a conventional device, in order to be able to increase the offset between the axes of the boxes, in particular if one wishes to increase the movement of the suspension. It suffices in fact to provide the fixing points which are necessary.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP8500517 | 1985-10-04 | ||
| EP8500518 | 1985-10-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2588218A1 true FR2588218A1 (en) | 1987-04-10 |
| FR2588218B1 FR2588218B1 (en) | 1989-08-11 |
Family
ID=26069386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR868613787A Expired FR2588218B1 (en) | 1985-10-04 | 1986-10-01 | DEVICE FOR INDIVIDUAL DRIVING OF AN INDEPENDENT DRIVE WHEEL IN A VEHICLE |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2588218B1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1042721A (en) * | 1962-03-30 | 1966-09-14 | Loehr & Bromkamp Gmbh | Constant velocity ratio joints |
| DE2542736B1 (en) * | 1975-09-25 | 1976-10-28 | Uni Cardan Ag | Homokinetic double joint |
| FR2416811A1 (en) * | 1978-02-13 | 1979-09-07 | Glaenzer Spicer Sa | Constant velocity universal joint for vehicle front wheel drive - has displacement laterally permitted by annular rollers mounted on three-arm link |
| GB2107655A (en) * | 1981-10-13 | 1983-05-05 | Loehr & Bromkamp Gmbh | Vehicle drive shaft |
| DE3514144A1 (en) * | 1985-04-19 | 1986-10-23 | Daimler-Benz Ag, 7000 Stuttgart | Driven axle for motor vehicles |
-
1986
- 1986-10-01 FR FR868613787A patent/FR2588218B1/en not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1042721A (en) * | 1962-03-30 | 1966-09-14 | Loehr & Bromkamp Gmbh | Constant velocity ratio joints |
| DE2542736B1 (en) * | 1975-09-25 | 1976-10-28 | Uni Cardan Ag | Homokinetic double joint |
| FR2416811A1 (en) * | 1978-02-13 | 1979-09-07 | Glaenzer Spicer Sa | Constant velocity universal joint for vehicle front wheel drive - has displacement laterally permitted by annular rollers mounted on three-arm link |
| GB2107655A (en) * | 1981-10-13 | 1983-05-05 | Loehr & Bromkamp Gmbh | Vehicle drive shaft |
| DE3514144A1 (en) * | 1985-04-19 | 1986-10-23 | Daimler-Benz Ag, 7000 Stuttgart | Driven axle for motor vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2588218B1 (en) | 1989-08-11 |
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