GB2074669A - Vehicle gearbox - Google Patents

Vehicle gearbox Download PDF

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Publication number
GB2074669A
GB2074669A GB8111201A GB8111201A GB2074669A GB 2074669 A GB2074669 A GB 2074669A GB 8111201 A GB8111201 A GB 8111201A GB 8111201 A GB8111201 A GB 8111201A GB 2074669 A GB2074669 A GB 2074669A
Authority
GB
United Kingdom
Prior art keywords
gears
shaft
input shaft
gear
intermediate shaft
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.)
Granted
Application number
GB8111201A
Other versions
GB2074669B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volvo AB
Original Assignee
Volvo AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo AB filed Critical Volvo AB
Publication of GB2074669A publication Critical patent/GB2074669A/en
Application granted granted Critical
Publication of GB2074669B publication Critical patent/GB2074669B/en
Expired legal-status Critical Current

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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
    • F16H3/093—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 with two or more countershafts
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/037—Gearboxes for accommodating differential gearings
    • 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
    • F16H3/093—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 with two or more countershafts
    • F16H2003/0931—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 with two or more countershafts each countershaft having an output gear meshing with a single common gear on the output shaft
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
    • 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
    • F16H2200/0047—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising five forward speeds

Abstract

The invention relates to a vehicle gearbox for transverse engines, especially a five-speed gearbox. The input shaft (2) of the gearbox has non-rotatable gears (11-16), which engage gears (17, 18, 19, 23, 24) on two intermediate shafts (3, 4) which are parallel to the input shaft. The gears on the intermediate shafts are freely rotatably mounted and can be coupled to the shafts by means of engaging sleeves (21, 22, 25). The intermediate shafts each has a non- rotatably fixed gear (7, 8) which engages the crown wheel (9) of the differential and functions as a pinion drive, the gears (7, 8) being fixed on the ends of the intermediate shafts directed towards the input end of the input shaft. Gears (13, 28) and an additional sliding gear (not shown) provide for reverse drive. <IMAGE>

Description

SPECIFICATION Vehicle gearbox The present invention relates to a gearbox for motor vehicles, comprising an input shaft with a number of gears non-rotatably fixed to the shaft, a first intermediate shaft arranged parallel to the input shaft with a number of gears which engage the gears on the input shaft, are freely rotatably journalled on the intermediate shaft and can be non-rotatably coupled by coupling means to the intermediate shaft, and an output gear non-rotatably fixed to the intermediate shaft, a second intermediate shaft arranged parallel with the input shaft and with a number of gears which engage gears on the input shaft, are freely rotatably journalled on the intermediate shaft and can be non-rotatably coupled by coupling means to the intermediate shaft, and an output gear non-rotatably fixed to the intermediate shaft, the two output gears non-rotatably fixed to the respective intermediate shafts engaging a common gear.
Gearboxes, in which the releasable gears are mounted on an intermediate shaft instead of on the output shaft, are used in front wheel drive vehicles and in vehicles with rear engines. Usually the engine and transmission are built together in a drive unit which has a gearbox and final drive with differential in a common housing. The output gear non-rotatably fixed to the intermediate shaft engages the crown wheel of the differential and functions as the pinion. In such a design, the intermediate shaft thus also functions as an output shaft.
These gearboxes of known type are relatively long, i.e. they are long in the axial direction, and are therefore not especially suited for use in motor vehicles in which the engine has several cylinders in a row and is placed transversely to the vehicle, due to the problem of space for the gearbox.
Further it is known to provide a gearbox with two intermediate shafts each having an output gear engaging a common gear on an output shaft, which is arranged in a conventional manner with its rotational axis coinciding with the rotational axis of the input shaft.
In this type of gearbox all shafts are arranged in a common plane. By this arrangement it is possible to increase the number of gear speeds in a gearbox for a conventional engine installation from, for example, four speeds to six speeds without extending the length of the gearbox. However, this type of gearbox is not suitable for motor vehicles having a transversely mounted engine.
The purpose of the present invention is generally to achieve a gearbox of the type described in the introduction, which is especially suited for use in motor vehicles with transverse engines which only leave a very limited space for the gearbox at the end of the engine. Particularly, the purpose is to achieve a five-speed gearbox for transverse engines.
This is achieved according to the invention when said output gears are fixed on shaft ends directed towards the input end of the input shaft, one of the intermediate shafts being disposed in a plane separated from a plane common to the input shaft, and the other intermediate shaft and said output gears engaging a common gear disposed excentrically of the input shaft.
A five-speed gearbox in this embodiment, for example, need be no longer than a threespeed gearbox. Furthermore all of the forward speeds are obtained with two gear steps, which provides relatively high efficiency and a quiet gearbox. By having different gear ratios between the respective output gears and the common gear (the crown wheel), larger steps between the gear speeds are possible, providing the possibility of obtaining better fuel economy and performance than with a conventional gearbox.
The invention will be described below in more detail with reference to the examples shown in the accompanying drawing, in which Figure 1 shows a schematic end view of a five-speed gearbox, Figure 2 shows a longitudinal section along the line ll-ll in Fig. 1, Figure 3 shows a schematic end view of an alternative embodiment of a five-speed gearbox according to the invention, and Figure 4 shows a longitudinal section along the line IV-IV in Fig. 3.
The gearbox shown in Figs. 1 and 2 has a housing 1 in which an input shaft 2, a first intermediate shaft 3 and a second intermediate shaft 4 are rotatably mounted. The housing 1 is constructed together with a housing 5 containing the final drive with differential 6.
Each intermediate shaft 3,4 carries a gear 7 and 8 respectively, which is non-rotatably fixed to its shaft and engages the crown wheel 9 of the differential and which thus forms the pinion of the final drive.
The input shaft 2 of the gearbox is driven by the engine (not shown) via a conventional friction clutch with disc 1 0. Six gears 11, 12, 13, 14, 1 5 and 1 6 are non-rotatably mounted on the shaft 2. The gears 11, 15 and 16 engage gears 17, 1 8 and 19, which are freely rotatably mounted on the intermediate shaft 3 and have engaging teeth 20. A pair of engaging sleeves 21, 22 are non-rotatably' but axially displaceably mounted on the shaft 3, so that gears 17, 1 8 and 1 9 can be selectively coupled to the shaft 3 in a conventional manner. In a corresponding manner, the gears 12, 14 of the input shaft engage gears 23, 24 (with engaging teeth) which are freely rotatably mounted on the second intermediate shaft 4.The gears 23, 24 can be selectively coupled to the intermediate shaft 4 with the aid of an axially displaceable engaging sleeve 25.
Engagement of the respective gear positions by displacing the engaging sleeves in done in the usual manner after disengaging the clutch between the engine and the gearbox. Gear positions one to five are thus obtained by locking the gears 23, 24, 17, 1 8 and 1 9 in said order to the respective shaft.
The gearbox has a reverse gear arrangement comprising a separate intermediate shaft 26 which carries a reverse drive 27, which is axially displaceable into and out of engagement with the gear 1 3 on the input shaft and a ring gear 28 non-rotatably fixed to the engaging sleeve 25. Thus in the reverse position, the torque is transmitted from the gear 1 3 to the ring gear 28 via the reverse drive 27 thus reversing the rotational direction of the intermediate shaft 4.
In the embodiment shown in Figs. 1 and 2, the pinion drive 7 and 8 respectively on the intermediate shafts are of the same size, and therefore the gear ratios in the different gear steps are determined by the gear ratios between the input shaft 2 and the intermediate shaft 3, 4.
Figs. 3 and 4 show an alternative embodiment of a five-speed gearbox according to the invention, in which the number of gears has been able to be reduced by providing the intermediate shafts with differently sized pinion drives 30 and 31. The input shaft no longer requires individual gears for each gear on the intermediate shafts; rather its gears 1 2 and 14 engage pairs of equal sized gears 32 and 33 on the intermediate shafts. Otherwise there are no structural differences between the two embodiments shown with the exception that the gearbox in the alternative embodiment is somewhat shorter axially which is an advantage.

Claims (6)

1. Gearbox for motor vehicles, comprising an input shaft with a number of gears nonrotatably fixed to the shaft, a first intermediate shaft arranged parallel to the input shaft with a number of gears which engage the gears on the input shaft, are freely rotatably journalled on the intermediate shaft and can be nonrotatably coupled by coupling means to the intermediate shaft, and an output gear nonrotatably fixed to the intermediate shaft, a second intermediate shaft arranged parallel with the input shaft and with a number of gears which engage gears on the input shaft, are freely rotatably journalled on the intermediate shaft, and can be non-rotatably coupled by coupling means to the intermediate shaft, and an output gear non-rotatably fixed to the intermediate shaft, the two output gears nonrotatably fixed to the respective intermediate shafts engaging a common gear, characterized in that said output gears are fixed on shaft ends directed towards the input end of the input shaft, one of the intermediate shafts being disposed in the plane separated from a plane common to the input shaft, and the other intermediate shaft and said output gears engaging a common gear disposed excentrically of the input shaft.
2. Gearbox according to claim 1, characterized in that the output gears and the common gear form drive pinion and crown wheel respectively in a final drive with differential constructed together with the bearbox.
3. Gearbox according to claim 1 or 2, characterized in that the input shaft has separate gears for each of the gears which are freely rotatably mounted on the intermediate shaft.
4. Gearbox according to claim 1 or 2, characterized in that the input shaft has gears which engage with freely rotatably mounted gears on the two intermediate shafts.
5. Gearbox according to any one of claims 1-4, characterized in that it has five gear speeds forward, the first intermediate shaft carrying gears for first and second gear, and the second intermediate shaft carrying gears for third, fourth and fifth gear.
6. Gearbox for motor vehicles substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB8111201A 1980-04-25 1981-04-09 Vehicle gearbox Expired GB2074669B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8003158A SE439279B (en) 1980-04-25 1980-04-25 VEHICLE CHARGE FOR MOTOR VEHICLE

Publications (2)

Publication Number Publication Date
GB2074669A true GB2074669A (en) 1981-11-04
GB2074669B GB2074669B (en) 1984-04-04

Family

ID=20340839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8111201A Expired GB2074669B (en) 1980-04-25 1981-04-09 Vehicle gearbox

Country Status (6)

Country Link
JP (1) JPS56167943A (en)
DE (1) DE3116383C2 (en)
FR (1) FR2481399B1 (en)
GB (1) GB2074669B (en)
IT (1) IT1170905B (en)
SE (1) SE439279B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133845A (en) * 1983-01-18 1984-08-01 Honda Motor Co Ltd Change speed gear arrangements
US4565106A (en) * 1981-12-01 1986-01-21 Toyota Jidosha Kogyo Kabushiki Kaisha Gear transmission mechanism with multiple layshafts
DE3637173A1 (en) * 1985-11-01 1987-05-21 Borg Warner Automotive TRANSAXLE ARRANGEMENT WITH MULTI-STAGE DRIVE
EP0224407A1 (en) * 1985-10-25 1987-06-03 Regie Nationale Des Usines Renault Gear transmission with one input shaft and two counter shafts
DE3917579A1 (en) * 1988-05-31 1989-12-07 Fuji Heavy Ind Ltd AUTOMATIC TRANSMISSION FOR MOTOR VEHICLES
DE4108659A1 (en) * 1991-03-16 1992-09-17 Renk Ag Multispeed gear box for sports vehicle - has arrangement of primary and secondary shafts for low centre of gravity
DE4140031A1 (en) * 1991-12-05 1993-06-09 Ford-Werke Ag, 5000 Koeln, De 6-SPEED GEARBOX FOR MOTOR VEHICLES
DE4207989A1 (en) * 1992-03-13 1993-09-16 Ford Werke Ag MULTI-SPEED INTERCHANGEABLE GEARBOX FOR MOTOR VEHICLES
EP1424509A1 (en) * 2002-11-28 2004-06-02 Getrag Ford Transmissions GmbH Use of a gear transmission in two variants
RU2657483C1 (en) * 2017-06-07 2018-06-14 федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") 18-speed mechanical shift transmission, mainly for a tractor

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5894658A (en) * 1981-12-01 1983-06-04 Toyota Motor Corp Gear type speed changing device
GB8411896D0 (en) * 1984-05-10 1984-06-13 Automotive Prod Plc Transmission
AT383549B (en) * 1985-03-28 1987-07-10 Steyr Daimler Puch Ag DRIVE ARRANGEMENT, IN PARTICULAR FOR ALL-ROUND MOTOR VEHICLES
SE451005B (en) * 1985-03-28 1987-08-24 Volvo Ab MOTORFORDONSVEXELLADA
SE454073B (en) * 1986-03-17 1988-03-28 Volvo Ab MOTORFORDONSVEXELLADA
DE4116189C2 (en) * 1990-05-25 2001-03-22 Volkswagen Ag Manual transmission
US5333512A (en) * 1991-12-16 1994-08-02 Volkswagen Ag Multistage transmission with an automatic load-shift spur gear
DE4226574C2 (en) * 1992-08-11 1996-04-11 Daimler Benz Ag Gear change transmission with two parallel countershafts and five forward gears
DE4318713C1 (en) * 1993-06-07 1994-09-15 Daimler Benz Ag Gearbox of the intermediate transmission type
DE19755432A1 (en) * 1997-12-13 1999-06-17 Zahnradfabrik Friedrichshafen Automatic multi-speed gearbox for commercial vehicles
DE19837776A1 (en) * 1998-08-20 2000-02-24 Zahnradfabrik Friedrichshafen Gearbox of motor driven vehicle, comprising of several shafts and notched wheels, is reduced in size by specific arrangement of same
FR2880094B1 (en) * 2004-12-29 2008-07-04 Renault Sas TRANSMISSION GEARBOX MOUNTED IN FALSE DOOR
CN109185433A (en) * 2018-11-16 2019-01-11 王睿 A kind of four speed automatic gearbox of new-energy automobile

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1378948A (en) * 1963-09-25 1964-11-20 Renault Transmission device for engine block-vehicle transmission
US4106358A (en) * 1972-03-17 1978-08-15 Turner Manufacturing Company, Ltd. Gear boxes
GB1426718A (en) * 1972-03-17 1976-03-03 Turner Mfg C Oltd Gear boxes
JPS5229377B2 (en) * 1972-06-07 1977-08-02
JPS5624137B2 (en) * 1974-11-22 1981-06-04
JPS51109624A (en) * 1975-03-24 1976-09-28 Toyo Kogyo Co
US4033200A (en) * 1975-04-24 1977-07-05 Ford Motor Company Five speed overdrive transmission
JPS528327U (en) * 1975-07-03 1977-01-20
DE2531016A1 (en) * 1975-07-11 1977-01-27 Bosch Gmbh Robert ELECTRIC DRIVE FOR A PISTON PUMP
JPS5229377U (en) * 1975-08-22 1977-03-01
JPS5547699Y2 (en) * 1978-09-20 1980-11-08

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565106A (en) * 1981-12-01 1986-01-21 Toyota Jidosha Kogyo Kabushiki Kaisha Gear transmission mechanism with multiple layshafts
GB2133845A (en) * 1983-01-18 1984-08-01 Honda Motor Co Ltd Change speed gear arrangements
EP0224407A1 (en) * 1985-10-25 1987-06-03 Regie Nationale Des Usines Renault Gear transmission with one input shaft and two counter shafts
FR2605377A2 (en) * 1985-10-25 1988-04-22 Renault MECHANICAL GEARBOX WITH A PRIMARY SHAFT AND TWO SECONDARY SHAFTS
DE3637173A1 (en) * 1985-11-01 1987-05-21 Borg Warner Automotive TRANSAXLE ARRANGEMENT WITH MULTI-STAGE DRIVE
DE3917579C2 (en) * 1988-05-31 1995-03-09 Fuji Heavy Ind Ltd Automatic transmissions for motor vehicles
DE3917579A1 (en) * 1988-05-31 1989-12-07 Fuji Heavy Ind Ltd AUTOMATIC TRANSMISSION FOR MOTOR VEHICLES
DE4108659A1 (en) * 1991-03-16 1992-09-17 Renk Ag Multispeed gear box for sports vehicle - has arrangement of primary and secondary shafts for low centre of gravity
DE4140031A1 (en) * 1991-12-05 1993-06-09 Ford-Werke Ag, 5000 Koeln, De 6-SPEED GEARBOX FOR MOTOR VEHICLES
DE4207989A1 (en) * 1992-03-13 1993-09-16 Ford Werke Ag MULTI-SPEED INTERCHANGEABLE GEARBOX FOR MOTOR VEHICLES
US5385065A (en) * 1992-03-13 1995-01-31 Ford Motor Company Multispeed manual transmission for motor vehicles
EP1424509A1 (en) * 2002-11-28 2004-06-02 Getrag Ford Transmissions GmbH Use of a gear transmission in two variants
RU2657483C1 (en) * 2017-06-07 2018-06-14 федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") 18-speed mechanical shift transmission, mainly for a tractor

Also Published As

Publication number Publication date
FR2481399A1 (en) 1981-10-30
DE3116383C2 (en) 1994-09-08
IT1170905B (en) 1987-06-03
IT8148317A0 (en) 1981-04-21
DE3116383A1 (en) 1982-05-27
FR2481399B1 (en) 1987-06-26
GB2074669B (en) 1984-04-04
SE8003158L (en) 1981-10-26
JPH0240896B2 (en) 1990-09-13
SE439279B (en) 1985-06-10
JPS56167943A (en) 1981-12-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960409