FR2879694A1 - Retaining washer for blocking differential pinion shaft, has central base and is fixed in one bore of differential case in which differential pinion shaft is engaged, to immobilize shaft along with fixation of another washer in another bore - Google Patents
Retaining washer for blocking differential pinion shaft, has central base and is fixed in one bore of differential case in which differential pinion shaft is engaged, to immobilize shaft along with fixation of another washer in another bore Download PDFInfo
- Publication number
- FR2879694A1 FR2879694A1 FR0453149A FR0453149A FR2879694A1 FR 2879694 A1 FR2879694 A1 FR 2879694A1 FR 0453149 A FR0453149 A FR 0453149A FR 0453149 A FR0453149 A FR 0453149A FR 2879694 A1 FR2879694 A1 FR 2879694A1
- Authority
- FR
- France
- Prior art keywords
- washer
- differential
- bore
- translation
- another
- 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.)
- Withdrawn
Links
- 230000000903 blocking effect Effects 0.000 title 1
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 238000002513 implantation Methods 0.000 description 1
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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B9/00—Connections of rods or tubular parts to flat surfaces at an angle
- F16B9/07—Connections of rods or tubular parts to flat surfaces at an angle involving plastic or elastic deformation when assembling
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
- F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
- F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
- F16B4/004—Press fits, force fits, interference fits, i.e. fits without heat or chemical treatment
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B9/00—Connections of rods or tubular parts to flat surfaces at an angle
-
- 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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
- F16H2048/085—Differential gearings with gears having orbital motion comprising bevel gears characterised by shafts or gear carriers for orbital gears
-
- 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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
- F16H48/40—Constructional details characterised by features of the rotating cases
Abstract
Description
SYSTEME D'ARRET D'AXE DE SATELLITE DANS UNSATELLITE AXIS STOP SYSTEM IN A
DIFFERENTIELDIFFERENTIAL
La présente invention concerne un différentiel pour véhicule 5 automobile. The present invention relates to a differential for a motor vehicle.
L'invention concerne plus particulièrement un différentiel de véhicule automobile, du type qui comporte un boîtier de différentiel pouvant être entraîné par une couronne solidaire de ce boîtier, des satellites montés en rotation dans le boîtier par des axes traversant celui-ci en étant immobilisés en translation relativement au boîtier, et deux planétaires montés en rotation en engrènement avec les satellites. The invention more particularly relates to a differential of a motor vehicle, of the type which comprises a differential housing which can be driven by a fixed crown of this housing, satellites mounted in rotation in the housing by axes passing through it being immobilized in translation relative to the housing, and two planetary wheels rotated in meshing with the satellites.
Diverses solutions ont été proposées jusqu'à maintenant pour bloquer en translation les axes des satellites dans le boîtier. Various solutions have been proposed until now to block in translation the axes of the satellites in the housing.
L'une de ces solutions prévoit l'utilisation d'un jonc logé dans une gorge de réception réalisée sur le pourtour du corps du boîtier en vis-à-vis des perçages dans lesquels est introduit l'axe correspondant de satellite. Cette solution nécessite non seulement l'usinage d'une gorge mais, a également pour inconvénient que la gorge fragilise grandement la tenue du corps du boîtier de différentiel. One of these solutions provides the use of a rod housed in a receiving groove formed on the periphery of the body of the housing vis-à-vis the holes in which is introduced the corresponding satellite axis. This solution requires not only the machining of a groove but also has the disadvantage that the throat greatly weakens the resistance of the body of the differential housing.
Une autre solution consiste à prévoir une vis spécifique d'arrêt de chaque axe de satellite. Cette solution a pour inconvénient majeur d'être volumineuse. Another solution is to provide a specific stop screw of each satellite axis. This solution has the major disadvantage of being bulky.
Il est également connu d'utiliser une goupille d'arrêt de chaque axe de satellite implantée en partie dans le corps du boîtier de différentiel en faisant saillie dans le perçage de ce corps permettant le passage de l'axe de satellites. Cette solution nécessite l'usinage de perçages pour le passage et l'implantation des goupilles. It is also known to use a locking pin of each satellite axis partially implanted in the body of the differential housing protruding into the piercing of this body allowing the passage of the axis of satellites. This solution requires the machining of holes for the passage and the implantation of the pins.
La publication GB 2 178 496 décrit un autre montage, selon lequel l'axe de satellite est maintenu en position par un moyen d'immobilisation axiale tel qu'un jonc de retenue. Ce jonc en forme de C se loge dans une gorge de l'axe, il se resserre pendant le 2879694 -2- montage et s'expanse, à la fin du montage, dans une autre gorge se trouvant en vis-à- vis et appartenant au boîtier de différentiel. Cependant, l'utilisation d'un jonc de retenue rend difficile le démontage puisqu'il faut le casser pour retirer l'axe. Publication GB 2 178 496 describes another arrangement, according to which the satellite axis is held in position by an axial immobilization means such as a retaining ring. This C-shaped ring is housed in a groove of the shaft, it tightens during assembly and expands, at the end of assembly, in another groove lying opposite and belonging to the differential case. However, the use of a retaining ring makes it difficult disassembly since it must be broken to remove the axis.
Ainsi, aucune des solutions connues ne permet un assemblage et un démontage simple d'un axe de différentiel et de son système de fixation. Thus, none of the known solutions allows simple assembly and disassembly of a differential shaft and its fastening system.
Un but principal de l'invention est de simplifier le montage d'un différentiel en réduisant le nombre d'opérations d'usinage et de montage consacrées au maintien de l'axe des satellites vis-à-vis du boîtier. A main object of the invention is to simplify the mounting of a differential by reducing the number of machining and mounting operations devoted to maintaining the axis of the satellites vis-à-vis the housing.
A cet effet, l'invention propose que cet axe de satellite puisse être bloqué axialement vis-à-vis du boîtier par un dispositif d'arrêt en translation qui peut être une rondelle circulaire et déformable, engagée dans chacun des deux perçages du boîtier. For this purpose, the invention proposes that this satellite axis can be locked axially vis-à-vis the housing by a translational stop device which can be a circular washer and deformable, engaged in each of the two holes of the housing.
Selon une caractéristique de l'invention, la rondelle peut présenter une base centrale circulaire et des rebords extérieurs espacés à la périphérie de celle-ci. Par ailleurs, cette rondelle peut posséder un diamètre légèrement supérieur aux perçages et être en acier. De plus, elle peut s'insérer dans un perçage par entrée en force. According to a characteristic of the invention, the washer may have a circular central base and outer rims spaced at the periphery thereof. Moreover, this washer may have a diameter slightly greater than the bores and be made of steel. In addition, it can be inserted into a piercing hole.
Selon un mode de réalisation de l'invention, la rondelle et ses rebords peuvent être déformables par pression pour s'arc-bouter et ainsi s'immobiliser dans le perçage. Les rebords peuvent aussi 25 présenter une forme rectangulaire ou carrée. According to one embodiment of the invention, the washer and its flanges can be deformable by pressure to bend and thus stop in the bore. The flanges may also have a rectangular or square shape.
Enfin, l'invention porte aussi sur un différentiel qui peut comporter un tel dispositif d'arrêt en translation de l'axe de satellite. Finally, the invention also relates to a differential which may include such a device for stopping in translation of the satellite axis.
D'autres caractéristiques et avantages de l'invention apparaîtront clairement à la lecture de la description suivante du mode de réalisation non limitatif de celle-ci, en liaison avec les dessins annexés sur lesquels: 2879694 -3- - la figure 1 est une vue en perspective du dessus d'un différentiel de transmission comprenant le système d'arrêt d'axe selon l'invention, - la figure 1A est un agrandissement partiel du système 5 d'arrêt d'axe illustré par la figure 1, et - la figure 2 est une vue de côté de la rondelle selon l'invention positionnée sur l'extrémité de l'axe de satellite à immobiliser. Other characteristics and advantages of the invention will become clear from reading the following description of the nonlimiting embodiment thereof, in conjunction with the appended drawings, in which: FIG. 1 is a view in perspective from above a transmission differential comprising the axle stop system according to the invention; FIG. 1A is a partial enlargement of the axis stop system illustrated in FIG. 1, and Figure 2 is a side view of the washer according to the invention positioned on the end of the satellite axis to be immobilized.
La figure 1 présente un exemple de réalisation de l'invention 10 dans le cas d'un différentiel sphérique 11 avec un mécanisme conique. Figure 1 shows an exemplary embodiment of the invention 10 in the case of a spherical differential 11 with a conical mechanism.
Le différentiel 11 comprend un boîtier de différentiel 16 de forme générale tronconique et une couronne d'entraînement 24 fixée de façon amovible au boîtier 16. Il comprend, en outre, des satellites (non représentés) montés en rotation dans le boîtier 16 sur un même axe 18 transversal qui est reçu dans deux perçages transversaux alignés 12 et 14 traversant les parois opposées du boîtier 16. The differential 11 comprises a differential housing 16 of generally frustoconical shape and a drive ring 24 removably attached to the housing 16. It further comprises satellites (not shown) rotatably mounted in the housing 16 on a single transverse axis 18 which is received in two aligned transverse bores 12 and 14 passing through the opposite walls of the casing 16.
Conformément à l'invention, l'axe 18, d'une longueur correspondant sensiblement à l'encombrement transversal du boîtier 16, est immobilisé suivant son axe transversal "A" par deux éléments d'arrêt 10, engagés dans chacun des perçages 12 et 14, recevant cet axe. According to the invention, the axis 18, of a length substantially corresponding to the transverse bulk of the housing 16, is immobilized along its transverse axis "A" by two stop elements 10, engaged in each of the bores 12 and 14, receiving this axis.
La figure 1A illustre le dispositif d'arrêt en translation de l'axe de satellite 18 qui est une rondelle de retenue présentant une base centrale circulaire 20 et des rebords 22 s'étendant vers l'extérieur à partir de la base 20 en étant espacés autour de la périphérie de celle-ci. Cette rondelle 10 ne demande pas d'usinage spécifique et peut être en acier ou en tout autre matériau particulièrement résistant tel qu'une matière plastique. Par ailleurs, ses rebords 22 peuvent être de forme rectangulaire ou carrée. Figure 1A illustrates the translational stop device of the satellite axis 18 which is a retaining washer having a circular central base 20 and flanges 22 extending outwardly from the base 20 being spaced apart around the periphery of it. This washer 10 does not require specific machining and can be made of steel or any other particularly resistant material such as a plastic material. Moreover, its edges 22 may be rectangular or square.
Selon le mode de réalisation de la figure 1, avant le montage, l'axe de satellite 18 est engagé dans le boîtier 16 par ses extrémités au travers des deux perçages 12 et 14. Une première rondelle 10 est 2879694 - 4emmanchée du côté du perçage 12. Elle est positionnée manuellement par pression dans ce perçage, ou à l'aide d'un outil, tel qu'un maillet. Comme la figure 2 l'illustre, en fin de positionnement, la rondelle 10, qui possède un diamètre supérieur aux perçages 12 ou 14, s'arc-boute par flambage grâce aux rebords 22 afin de s'immobiliser. La différence de hauteur entre l'extrémité d'un rebord 22 et la base centrale 20 est baptisée "e". Une seconde rondelle de retenue 10 est ensuite placée au niveau du perçage opposé 14 afin de bloquer l'axe 18 en translation. Après le positionnement de ces deux rondelles 10 au niveau de chaque extrémité de l'axe 18, ce dernier est emprisonné dans le boîtier 16, et est donc immobilisé en translation selon l'axe "A". According to the embodiment of FIG. 1, before mounting, the satellite axis 18 is engaged in the housing 16 by its ends through the two bores 12 and 14. A first washer 10 is 2879694 - 4threaded on the piercing side 12. It is manually positioned by pressure in this bore, or using a tool, such as a mallet. As FIG. 2 illustrates, at the end of positioning, the washer 10, which has a diameter greater than the bores 12 or 14, buckles with buckling due to the flanges 22 in order to stop. The difference in height between the end of a flange 22 and the central base 20 is called "e". A second retaining washer 10 is then placed at the level of the opposite bore 14 in order to block the axis 18 in translation. After the positioning of these two washers 10 at each end of the axis 18, the latter is trapped in the housing 16, and is thus immobilized in translation along the axis "A".
Selon ce système d'arrêt, l'effort de retenue de la rondelle 10 est nettement supérieur à l'effort d'emmanchement, car l'immobilisation de la rondelle se fait par arc-boutement. Par ailleurs, son démontage peut s'effectuer facilement avec un outillage adapté. According to this stop system, the retaining force of the washer 10 is significantly greater than the fitting force, since the immobilization of the washer is done by buttresses. Moreover, its disassembly can be done easily with adapted tools.
Grâce à l'invention, les tolérances sur le positionnement de l'élément d'arrêt 10 par rapport au boîtier 16 sont relativement 20 larges sans pour autant introduire un jeu axial dans l'axe 18 de satellite. Thanks to the invention, the tolerances on the positioning of the stop element 10 relative to the housing 16 are relatively wide without introducing an axial play in the axis 18 of the satellite.
De plus, ce système d'arrêt 10 autorise la rotation de l'axe de satellite 18 sur son axe lors des phases de fonctionnement sévères (patinage ou virage sous fort couple). La rondelle de retenue 10 sera, en effet, peu sollicitée, permettant ainsi une forte réduction des risques de grippage et d'usure de l'axe. In addition, this stop system 10 allows the rotation of the satellite axis 18 on its axis during severe operating phases (skidding or cornering under strong torque). The retaining washer 10 will, indeed, little solicited, thus greatly reducing the risk of galling and wear of the axis.
Ainsi, grâce à l'invention, deux éléments d'arrêt 10 identiques sont suffisants pour bloquer l'axe en translation. Le montage du différentiel de transmission est donc simplifié en réduisant le nombre d'opérations d'usinage et de montage consacrées au maintien de l'axe 18 des satellites vis-à-vis du boîtier 16. Thus, thanks to the invention, two identical stop elements 10 are sufficient to block the axis in translation. The mounting of the transmission differential is thus simplified by reducing the number of machining and mounting operations devoted to maintaining the axis 18 of the satellites vis-à-vis the housing 16.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0453149A FR2879694A1 (en) | 2004-12-22 | 2004-12-22 | Retaining washer for blocking differential pinion shaft, has central base and is fixed in one bore of differential case in which differential pinion shaft is engaged, to immobilize shaft along with fixation of another washer in another bore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0453149A FR2879694A1 (en) | 2004-12-22 | 2004-12-22 | Retaining washer for blocking differential pinion shaft, has central base and is fixed in one bore of differential case in which differential pinion shaft is engaged, to immobilize shaft along with fixation of another washer in another bore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2879694A1 true FR2879694A1 (en) | 2006-06-23 |
Family
ID=34952746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0453149A Withdrawn FR2879694A1 (en) | 2004-12-22 | 2004-12-22 | Retaining washer for blocking differential pinion shaft, has central base and is fixed in one bore of differential case in which differential pinion shaft is engaged, to immobilize shaft along with fixation of another washer in another bore |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2879694A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10704664B2 (en) * | 2017-11-04 | 2020-07-07 | Toyota Jidosha Kabushiki Kaisha | Differential gear device |
| US11306805B2 (en) | 2017-05-18 | 2022-04-19 | Gkn Automotive Limited | Contoured differential gear washer with defined fluid flow path |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB780237A (en) * | 1954-08-04 | 1957-07-31 | Waldes Kohinoor Inc | Improvements in or relating to self-locking retaining rings |
| GB2178496A (en) * | 1985-07-30 | 1987-02-11 | Dana Corp | Shaft retaining means for a differential gear assembly |
-
2004
- 2004-12-22 FR FR0453149A patent/FR2879694A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB780237A (en) * | 1954-08-04 | 1957-07-31 | Waldes Kohinoor Inc | Improvements in or relating to self-locking retaining rings |
| GB2178496A (en) * | 1985-07-30 | 1987-02-11 | Dana Corp | Shaft retaining means for a differential gear assembly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11306805B2 (en) | 2017-05-18 | 2022-04-19 | Gkn Automotive Limited | Contoured differential gear washer with defined fluid flow path |
| US10704664B2 (en) * | 2017-11-04 | 2020-07-07 | Toyota Jidosha Kabushiki Kaisha | Differential gear device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20060831 |