FR2789741A1 - Gearbox for car involves disengaging coupling of gear co-axial with output shaft done by another gear engaged with both gear and output shaft - Google Patents

Gearbox for car involves disengaging coupling of gear co-axial with output shaft done by another gear engaged with both gear and output shaft Download PDF

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Publication number
FR2789741A1
FR2789741A1 FR9901606A FR9901606A FR2789741A1 FR 2789741 A1 FR2789741 A1 FR 2789741A1 FR 9901606 A FR9901606 A FR 9901606A FR 9901606 A FR9901606 A FR 9901606A FR 2789741 A1 FR2789741 A1 FR 2789741A1
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Prior art keywords
gear
output shaft
gears
gearbox
shaft
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Granted
Application number
FR9901606A
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French (fr)
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FR2789741B1 (en
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Sebastien Catimel
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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
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H2003/0807—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with gear ratios in which the power is transferred by axially coupling idle 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0052—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising six forward speeds
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/089—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

Gearbox has input shaft (2) with gear (8), countershaft (3) with three gears (9,10,11) and coupled to input shaft by gear (12), and output shaft (1), parallel to other shafts and with four gears (4, 5, 6, 7) gearing with gears (8, 9, 10, 11). Disengaging coupling of gear (4) with output shaft is done by gear (5), co-axial with gear (4) and that is geared into gear (4) and output shaft.

Description

La présente invention concerne une boite de vitesses pour véhiculeThe present invention relates to a gearbox for a vehicle

automobile.automobile.

En référence à la figure 1, qui illustre l'état actuel de la technique, une boite de vitesses à six rapports en "marche avant", pour véhicule automobile comporte classiquement:  With reference to FIG. 1, which illustrates the current state of the art, a six-speed gearbox in "forward gear", for a motor vehicle conventionally comprises:

- un arbre d'entrée 2 pourvu de six engrenages 9, 10, 11, 12, 13, 14.  - an input shaft 2 provided with six gears 9, 10, 11, 12, 13, 14.

- un arbre de sortie 1.- an output shaft 1.

- six engrenages 3, 4, 5, 6, 7, 8, montés tournants sur l'arbre 1 avec des systèmes d'embrayage 15, 16, 17, 18, 19, 20, susceptibles d'assurer une liaison d en rotation de chacun de ces engrenages avec l'arbre 1; ces six engrenages 3, 4, 5,  - six gears 3, 4, 5, 6, 7, 8, mounted rotating on the shaft 1 with clutch systems 15, 16, 17, 18, 19, 20, capable of ensuring a connection d in rotation of each of these gears with the shaft 1; these six gears 3, 4, 5,

6, 7, 8, engrenant avec les engrenages respectivement 9, 10, 11, 12, 13, 14.  6, 7, 8, meshing with the gears 9, 10, 11, 12, 13, 14 respectively.

Dans l'exemple illustré à la figure 1, les engrenages 9 à 14 et 3 à 8 forment six couples d'engrenages ayant chacun un rapport spécifique de transmission entre l'arbre d'entrée 2 et l'arbre de sortie 1. Six rapports de -15 transmission peuvent ainsi être obtenus en embrayant l'un des systèmes  In the example illustrated in FIG. 1, the gears 9 to 14 and 3 to 8 form six pairs of gears each having a specific transmission ratio between the input shaft 2 and the output shaft 1. Six ratios of -15 transmission can thus be obtained by engaging one of the systems

d'embrayage 15 à 20 et en débrayant tous les autres.  clutch 15 to 20 and disengaging all the others.

La boite de vitesses décrite ci-dessus et illustrant l'état actuel de la technique se caractérise en ce que l'engrenage moteur (menant),de chaque couple d'engrenages, est toujours moteur quelque soit le rapport de vitesse choisi, et en ce z o que l'engrenage récepteur (mené), de chaque couple d'engrenages est toujours récepteur quelque soit le rapport de vitesse choisi: ceci dans le cas o l'arbre d'entrée 2 est moteur et l'arbre de sortie 1 est récepteur: chaque couple d'engrenage  The gearbox described above and illustrating the current state of the art is characterized in that the drive gear (driving), of each pair of gears, is always drive whatever the gear ratio chosen, and in this zo that the receiving (driven) gear, of each pair of gears is always receiving whatever the speed ratio chosen: this in the case where the input shaft 2 is motor and the output shaft 1 is receiver: each gear pair

étant constitué de deux engrenages engrenant l'un avec l'autre.  consisting of two gears meshing with each other.

Le but de l'invention est de concevoir une boite de vitesses de z 5 structure plus compacte et plus légère permettant d'obtenir, avec un poids et un encombrement réduits, un nombre de rapports de transmission aussi important  The object of the invention is to design a gearbox with a more compact and lighter structure, making it possible to obtain, with a reduced weight and size, as large a number of transmission ratios.

qu'une boite classique du type précité.  than a conventional box of the aforementioned type.

En vue de la réalisation de ce but, on prévoit selon l'invention une boite de vitesses comportant: (figure 2)  In order to achieve this goal, there is provided according to the invention a gearbox comprising: (Figure 2)

3) - un arbre d'entrée 2 pourvu d'un engrenage d'entrée 8.  3) - an input shaft 2 provided with an input gear 8.

- un arbre intermédiaire 3, pourvu de trois engrenages 9, 10, 11, et susceptible d'être accouplé à l'arbre d'entrée 2 par un système d'embrayage 12 tel  - an intermediate shaft 3, provided with three gears 9, 10, 11, and capable of being coupled to the input shaft 2 by a clutch system 12 such

que système à crabots. l'arbre intermédiaire 3 étant coaxial à l'arbre d'entrée 2.  that dog system. the intermediate shaft 3 being coaxial with the input shaft 2.

- un arbre de sortie 1, parallèle aux arbres 2 et 3, pourvu de quatre  - an output shaft 1, parallel to the shafts 2 and 3, provided with four

3 5- engrenages 4, 5, 6, 7, engrenant respectivement avec les engrenages 8, 9, 10, 11.  3 5- gears 4, 5, 6, 7, meshing respectively with the gears 8, 9, 10, 11.

Les trois engrenages 5, 6, 7, sont montés tournants sur l'arbre 1, et sont pourvus chacun d'un moyen d'embrayage 14, 15, 16, tel que système à crabots, susceptible d'assurer une liaison en rotation de chacun de ces engrenages , 6, 7, avec l'arbre 1.  The three gears 5, 6, 7 are mounted to rotate on the shaft 1, and are each provided with a clutch means 14, 15, 16, such as a dog clutch system, capable of ensuring a rotation connection of each of these gears, 6, 7, with the shaft 1.

4' o L'engrenage 4 est monté tournant sur l'arbre 1.  4 'o The gear 4 is mounted rotating on the shaft 1.

L'engrenage 5 est pourvu d'un second système d'embrayage 13 tel que  The gear 5 is provided with a second clutch system 13 such that

système à crabots, susceptible d'assurer sa liaison en rotation avec l'engrenage 4.  dog system, capable of ensuring its connection in rotation with the gear 4.

Ainsi, lorsque l'arbre d'entrée 2 est embrayé avec l'arbre intermédiaire 3, par le système d'embrayage 12, la boite de vitesses présente une configuration identique à celle d'une boite classique. Chaque rapport de transmission est obtenu en embrayant un et uniquement un des trois engrenages 5, 6, ou 7. Chaque couple d'engrenages 5/9, 6/10, et 7/11, forme ainsi un rapport de transmission entre l'arbre  Thus, when the input shaft 2 is engaged with the intermediate shaft 3, by the clutch system 12, the gearbox has a configuration identical to that of a conventional gearbox. Each transmission ratio is obtained by engaging one and only one of the three gears 5, 6, or 7. Each pair of gears 5/9, 6/10, and 7/11, thus forms a transmission ratio between the shaft

d'entrée 2 et l'arbre de sortie 1.input 2 and output shaft 1.

Outre ces rapports de transmission classiques, le débrayage de l'arbre d'entrée 2 d'avec l'arbre intermédiaire 3, et l'embrayage de l'engrenage 4 avec l'engrenage 5 par l'intermédiaire du système d'embrayage 13, permet en embrayant -<0 un et uniquement un des trois engrenages 5, 6, et 7, par leur système d'embrayage respectif 14, 15, et 16, avec l'arbre de sortie 1, d'obtenir trois rapports de  In addition to these conventional transmission ratios, the disengagement of the input shaft 2 from the intermediate shaft 3, and the clutch of the gear 4 with the gear 5 via the clutch system 13 , allows by engaging - <0 one and only one of the three gears 5, 6, and 7, by their respective clutch system 14, 15, and 16, with the output shaft 1, to obtain three ratios of

transmission supplémentaires, entre l'arbre d'entrée 2 et l'arbre de sortie 1.  additional transmission, between input shaft 2 and output shaft 1.

Il en résulte que le nombre de rapports de transmission n'est plus limité au nombre de couples d'engrenages. Ainsi avec quatre couples d'engrenages, -4 q il est possible de réaliser six rapports de transmission différents. C'est ainsi qu'en comparaison avec une boite classique et pour le même nombre de rapports, l'encombrement et le poids de la boite de vitesses ainsi conçue, peuvent diminuer  As a result, the number of transmission ratios is no longer limited to the number of gear pairs. Thus with four pairs of gears, -4 q it is possible to produce six different transmission ratios. Thus, in comparison with a conventional gearbox and for the same number of reports, the size and weight of the gearbox thus designed, can decrease

de moitié, sinon davantage.in half, if not more.

zso Les commandes des systèmes d'embrayage 12, 13, 14, 15, 16 peuvent être réalisées au moyen de dispositifs de commande classiques de type mécanique,  zso The clutch systems 12, 13, 14, 15, 16 can be controlled by conventional mechanical type control devices,

électrique, hydraulique, pneumatique ou magnétique.  electric, hydraulic, pneumatic or magnetic.

En l'espèce, le dimensionnement des engrenages a été calculé de la manière suivante:  In this case, the dimensioning of the gears was calculated as follows:

2 5 - l'engrenage 4 possède 28 dents.  2 5 - the gear 4 has 28 teeth.

- l'engrenage 5 possède 22 dents.- the gear 5 has 22 teeth.

- l'engrenage 6 possède 32 dents.- the gear 6 has 32 teeth.

- l'engrenage 7 possède 19 dents.- the gear 7 has 19 teeth.

- l'engrenage 8 possède 22 dents.- the gear 8 has 22 teeth.

3 0 - l'engrenage 9 possède 28 dents.  3 0 - the gear 9 has 28 teeth.

- l'engrenage 10 possède 18 dents.- the gear 10 has 18 teeth.

- l'engrenage 11 possède 31 dents.- the gear 11 has 31 teeth.

Avec la structure de boite qui vient d'être décrite, il est possible  With the box structure which has just been described, it is possible

3 U d'obtenir six rapports de transmission différents.  3 U to get six different transmission reports.

Chacun des six rapports est obtenu de la manière suivante: Le rapport n 1 est obtenu en embrayant les systèmes d'embrayage 13 et 15, et en débrayant les autres. Le coefficient de transmission est ainsi de  Each of the six reports is obtained in the following way: Report n 1 is obtained by engaging the clutch systems 13 and 15, and by disengaging the others. The transmission coefficient is thus

22 22 1822 22 18

-- *--- *- = 0.347- * --- * - = 0.347

28 28 3228 28 32

ID Le rapport n 2 est obtenu en embrayant les systèmes d'embrayage 12 et 15,  ID Report 2 is obtained by engaging clutch systems 12 and 15,

et en débrayant les autres.and disengaging others.

Le coefficient de transmission est ainsi de:  The transmission coefficient is thus:

-I 5 - 0.562-I 5 - 0.562

Le rapport n 3 est obtenu en embrayant les systèmes d'embrayage 13 et 14,  Report 3 is obtained by engaging the clutch systems 13 and 14,

et en débrayant les autres.and disengaging others.

2 o Le coefficient de transmission est ainsi de:  2 o The transmission coefficient is thus:

--- = 0.786--- = 0.786

z- Le rapport n 4 est obtenu en embrayant les systèmes d'embrayage 13 et 16,  z- Report n 4 is obtained by engaging clutch systems 13 and 16,

et en débrayant les autres.and disengaging others.

Le coefficient de transmission est ainsi de  The transmission coefficient is thus

22 22 3122 22 31

---* * - = 1--- * * - = 1

28 28 1928 28 19

Le rapport n 5 est obtenu en embrayant les systèmes d'embrayage 12 et 14,  Report 5 is obtained by engaging the clutch systems 12 and 14,

et en débrayant les autres.and disengaging others.

Le coefficient de transmission est ainsi de  The transmission coefficient is thus

--- = 1.273--- = 1.273

Le rapport n 6 est obtenu en embrayant les systèmes d'embrayage 12 et 16,  Report 6 is obtained by engaging the clutch systems 12 and 16,

) et en débrayant les autres.) and by disengaging others.

Le coefficient de transmission est ainsi de  The transmission coefficient is thus

--- = 1.632--- = 1.632

Claims (1)

REVENDICATIONS Boite de vitesses comportant:CLAIMS Transmission comprising: - un arbre d'entrée (2) pourvu d'un engrenage d'entrée (8), - un arbre intermédiaire (3) coaxial et embrayable avec l'arbre d'entrée (2), et pourvu de trois engrenages (9, 10, 11), - un arbre de sortie (1) pourvu, d'une part de trois engrenages (5, 6, 7) débrayables, engrenant respectivement avec les engrenages (9, 1 0, 11) et d'autre part d'un engrenage (4) monté tournant sur l'arbre (1) et engrenant avec l'engrenage (8), D caractérisée en ce que l'accouplement débrayable de l'engrenage (4) avec l'arbre de sortie (1) qui lui est coaxial, est réalisé par  - an input shaft (2) provided with an input gear (8), - an intermediate shaft (3) coaxial and engaging with the input shaft (2), and provided with three gears (9, 10, 11), - an output shaft (1) provided, on the one hand with three disengageable gears (5, 6, 7), meshing respectively with the gears (9, 1 0, 11) and on the other hand d '' a gear (4) mounted rotating on the shaft (1) and meshing with the gear (8), D characterized in that the disengageable coupling of the gear (4) with the output shaft (1) which is coaxial to it, is realized by l'intermédiaire de l'engrenage (5) qui est coaxial à l'engrenage (4), et qui est pourvu de moyens de son embrayage avec l'engrenage (4) d'une part et avec l'arbre (1) d'autre part.  through the gear (5) which is coaxial with the gear (4), and which is provided with means for its engagement with the gear (4) on the one hand and with the shaft (1) d 'somewhere else.
FR9901606A 1999-02-11 1999-02-11 GEARBOX FOR MOTOR VEHICLE Expired - Fee Related FR2789741B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9901606A FR2789741B1 (en) 1999-02-11 1999-02-11 GEARBOX FOR MOTOR VEHICLE

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Application Number Priority Date Filing Date Title
FR9901606A FR2789741B1 (en) 1999-02-11 1999-02-11 GEARBOX FOR MOTOR VEHICLE

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FR2789741A1 true FR2789741A1 (en) 2000-08-18
FR2789741B1 FR2789741B1 (en) 2001-03-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221681A (en) * 2015-10-14 2016-01-06 重庆华陵工业有限公司 Shift gear drive

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188449B (en) * 1961-04-21 1965-03-04 Kloeckner Humboldt Deutz Ag Gear change gearbox in group design for motor vehicles
EP0092964A1 (en) * 1982-04-28 1983-11-02 Automotive Products Public Limited Company Change speed transmission

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188449B (en) * 1961-04-21 1965-03-04 Kloeckner Humboldt Deutz Ag Gear change gearbox in group design for motor vehicles
EP0092964A1 (en) * 1982-04-28 1983-11-02 Automotive Products Public Limited Company Change speed transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105221681A (en) * 2015-10-14 2016-01-06 重庆华陵工业有限公司 Shift gear drive

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FR2789741B1 (en) 2001-03-23

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