GB2469267A - A gear case for supporting a gear assembly for an automobile and method of assembling such a gear case - Google Patents
A gear case for supporting a gear assembly for an automobile and method of assembling such a gear case Download PDFInfo
- Publication number
- GB2469267A GB2469267A GB0905824A GB0905824A GB2469267A GB 2469267 A GB2469267 A GB 2469267A GB 0905824 A GB0905824 A GB 0905824A GB 0905824 A GB0905824 A GB 0905824A GB 2469267 A GB2469267 A GB 2469267A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gear
- support plate
- case
- shaft
- assembling
- 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- Withdrawn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
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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- 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
- F16H57/02004—Gearboxes; Mounting gearing therein the gears being positioned relative to one another by rolling members or by specially adapted surfaces on the gears, e.g. by a rolling surface with the diameter of the pitch circle
-
- 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
- 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
Abstract
A gear case for supporting a gear assembly for an automobile comprises a transmission case 24 for receiving a plurality of gear shafts 12 and a clutch case 26 for covering a major part of the plurality of gear shafts 12. According to the invention a support plate 10 connected to the transmission case 24 is provided, wherein at least two shaft bearings 18 respectively for bearing one gear shaft 12 of the plurality of gear shafts 12 are connected to the support plate 10. Since the shaft bearings 18 are not connected to the clutch case 26 but to an additional support plate 10 a better visibility during the assembling is provided, so that it is facilitated to insert the plurality of gear shafts 12 into the respective shaft bearing 18. A method of assembling such a gear case is also claimed.
Description
Gear case and method for assembling a gear box
DescriptiOn
The invention relates to a gear case for a gear box of an automobile, by means of which a gear assembly can be supported. The invention further relates to a method of assembling such kind of a gear box.
For assembling a gear box it is known to provide a transmission case, which is. a part of a gear case. A plurality of shaft bearings is connected to the transmission case for supporting a gear assembly, which comprises a plurality of gear shafts. Subsequently one gear shaft after the other is inserted into the transmission case, wherein each gear shaft is inserted into its respective shaft bearing for bearing one end of the respective gear shaft. After the insertion of the gear assembly a major part of the plurality of gear shafts is covered by a clutch case of the gear case such, that only an input shaft and one or more output shafts are led through the clutch case. A plurality of shaft bearings is connected to the clutch case so that the plurality of gear shafts is born on its respective other end automatically, when the clutch case is fastened to the transmission case.
It is a disadvantage of such kind of a gear case and such kind of assembling method that particularly at an increasing number of gear shafts, like four gear shafts and even more, it is difficult to connect the clutch case to the transmission case. This leads to an increased assembling time and higher assembling costs.
It is the object of the invention to provide a gear case as well as a method for assembling a gear box, by which the assembling is facilitated.
The solution of the object is achieved by a gear case with the featuies of claim 1 as well as a method of assembling a gear box with the features of claim 15.
Preferred embodiments are given by the dependent claims.
The gear case according to the invention for supporting a gear assembly for an automobile, comprises a transmission case for receiving a plurality of gear shafts and a clutch case for covering a major part of the plurality of gear shafts. According to the invention a support plate connected to the transmission case is provided, wherein at least two shaft bearings respectively for bearing one gear shaft of the plurality of gear shafts are connected to the support plate.
Particularly a major part of gear shafts preferably each gear shaft of the plurality of gear shafts can be supported by its respective shaft bearing connected to the support plate.
Since the shaft bearings are not connected to the clutch case but to an additional support plate a better visibility during the assembling is provided, so that it is facilitated to insert the plurality of gear shafts into the respective shaft bearing. A blind assembly of gear box parts is prevented. Even a high number of gear shafts of four or more gear shafts can easily be supported into the gear case. Thus, an increased number of gears for instance one reverse gear and seven or more forward gears can be provided rendering a more fuel efficient driving possible, which leads to a C02-reduction during operation of an engine connected to a gear box comprising the support plate. Since the covering of the gear assembly is provided by the clutch case, it is possible to provide one or more openings into the support plate, which may increase the visibility for inserting the gear shafts into its respective shaft bearing of the support plate. Particularly the support plate may be designed smaller and/or thinner than the clutch case, so that the handling is improved.
Particularly the support plate may be lighter than the clutch case, so that the effort for adjusting the support plate with respect to the gear shafts is reduced. Since the gear shafts may be supported and adjusted be means of the support plate, the connection of the clutch case is facilitated. Particularly the supported gear shafts, which are intended to be led through the clutch case, may function as centering bolts for the clutch case facilitating the adjustment of the clutch case with respect to the transmission case for instance for fastening the clutch case to the transmission case.
Particularly the support plate is arranged between the transmission case and the clutch case, wherein the support plate contacts the transmission case as well as the clutch case. A clearance of the support plate in axial direction of the gear shafts may be prevented without additional means. Further the position of the support plate and thus the position of the shaft bearings can be adjusted with high accuracy. The support plate may be clamped between the transmission case and the clutch case. Further the clutch case may provide a holding force in axial direction of the plurality of gear shafts to the support plate. A clearance in axial direction of the gear shafts in axial direction can be prevented.
Preferably a final drive bearing for bearing a final drive unit is connected to the support plate, wherein the final drive unit is arranged mainly between the support plate and the clutch case. The final drive unit is particularly an assembly of a driven gear and a differential. During assembling the support plate may provide a lower final drive bearing, wherein an upper final drive bearing is connected to the clutch case.
Since particularly the clutch case only supports one part of the final drive unit a complicated adjustment of the clutch case with respect to the final drive unit is prevented. Particularly the clutch case may be guided by one or more gear shafts supported by means of the support plate.
Particularly the number of shaft bearings connected to the support plate corresponds to the number of gear shafts of the plurality of gear shafts. All gear shafts are supported via the support plate, so that no gear shaft has to be supported via the clutch case. This facilitates the assembling of the clutch case.
Preferably the transmission case comprises a fastening surface, where the clutch case is fastened to the transmission case, wherein the support plate is connected to the transmission case shifted away from the clutch case with respect to the fastening surface. The fastening surface may be part of a flange of the transmission case. The fastening surface may be particularly arranged in one plane. Since the support plate is shifted away from the clutch case, the support plate may be shifted inwards into the building space provided by the transmission case with respect to the fastening surface. The building space of the gear case is particularly not increased by means of the support plate.
In a preferred embodiment the clutch case provides a holding force in axial direction to at least one shaft bearing connected to the support plate. Due to the force applied to the shaft bearing the shaft bearing can be pressed to a shoulder for adjusting a tapered roller bearing or the like. When the shaft bearing is designed as ball bearing, the shaft bearing together with the support plate are pressed in axial direction for preventing an axial clearance of the shaft bearing as well as of the support plate.
In a further embodiment the support plate provides a holding force in axial direction to at least one gear shaft via the respective shaft bearing connected to the support plate. The support plate may press the gear shaft into its lower shaft bearing, so that an axial clearance of the gear shaft may be prevented. The holding force provided by the support plate may be applied directly to the gear shaft or indirectly via the shaft bearing connected to the support plate.
Particularly the support plate is connected to the transmission case via screws screwed to a tapped blind hole. Due to the tapped blind holes for each screw a sealing between the support plate and the transmission case is not necessary. A sealing between the transmission case and the clutch case is sufficient for preventing a leakage of transmission oil.
In a preferred embodiment at least one shaft bearing connected to the support plate is designed as ball bearing or cylindrical roller bearing, wherein particularly all shaft bearings connected to the support plate are designed as ball bearing and/or cylindrical roller bearing. Ball bearings and/or cylindrical roller bearings provide a low friction and a high efficiency leading to improved fuel efficiency and a reduction of C02-emissions. Tapered roller bearings for facilitating the insertion of the gear shaft into the shaft bearings are rendered unnecessary by use of the support plate.
Preferably at least one sensor for monitoring a gear shaft, particularly a position sensor for detecting a turning angle of the gear shaft, is connected to the support plate. Be means of the support plate several sensors for monitoring a particular parameter of a gear shaft can easily be provided close to the gear shaft and Is spaced to the transmission case and/or spaced to the clutch case. The design of the transmission case and/or of the clutch case may be simplified, since neither the transmission case nor the clutch case must provide webs or the like for positioning a specific sensor at a specific place inside the gear case. Particularly wires connected to a respective sensor may be guided along a surface of the support plate.
The invention further relates to a gear box for an automobile. The gear box comprises a gear assembly supported by a gear case, wherein the gear case may be designed as previously described. Since the shaft bearings are not connected to the clutch case but to an additional support plate a better visibility during the assembling is provided, so that it is facilitated to insert the gear assembly into the respective shaft bearings.
Preferably the gear assembly comprises a plurality of gear shafts, wherein at least one gear shaft is supported by two shaft bearings, wherein one shaft bearing is connected to the transmission case and the other shaft bearing is connected to the support plate.
Since the gear shafts may be supported and adjusted by means of the support plate, the connection of the clutch case is facilitated. Particularly the supported gear shafts, which are intended to be led through the clutch case, may function as centering bolts for the clutch case facilitating the adjustment of the clutch case with respect to the transmission case for instance for io fastening the clutch case to the transmission case.
Particularly the support plate is kept in position by means of the transmission case and the clutch case, particularly at least by clamping. A clearance of the support plate in axial direction of the gear shafts may be prevented without additional means. Further the position of the support plate and thus the position of the shaft bearings can be adjusted with high accuracy.
The invention further relates to a method of assembling a gear box, wherein particularly the gear box may be designed as previously described. According to this assembling method a transmission case is provided. A plurality of gear shafts is inserted into the transmission case. A support plate is connected to the transmission case, wherein at least two shaft bearings are connected to the support plate, wherein the support plate is connected to the transmission case such, that each shaft bearing connected to the support plate bears one respective gear shaft. A major part of the plurality of gear shafts is covered by means of a clutch case for receiving a gear case, which may be designed as previously described. Since the shaft bearings are not connected to the clutch case but to an additional support plate a better visibility during the assembling is provided, so that it is facilitated to insert the plurality of gear shafts into the respective shaft bearing.
These and other aspects of the invention will be apparent from and elucidated with reference to a preferred embodiment described hereinafter.
In the drawings: Fig. 1 is a schematic perspective view of a support plate for a gear case according to the invention and Fig. 2 is a schematic sectional partial view of a gear box comprising the support plate of Fig. 1.
The support plate 10 illustrated in Fig. 1 is adapted for supporting four gear shafts 12 of a gear assembly. The support plate 10 comprises four corresponding receiving openings 14, into which a respective shaft bearing 18 can be inserted for bearing the respective gear shaft 12. In the illustrated embodiment the support plate 10 further comprises openings 16, which increase the visibility during the assembling of the support plate 10 into a gear box 20.
The support plate 10 comprises a plurality of through holes 22 for fastening the support plate to a transmission case 24 and/or a clutch case 26. The support plate 10 further comprises a circumferential lateral surface 30 which corresponds mainly to a part of an inner surface 32 of the transmission case 24. By means of the transmission case 24, the clutch case 26 and the support plate 10 a gear case for the gear box 20 is provided, wherein this gear case receives and supports the gear shafts 12.
In assembled state as illustrated in Fig. 2 the support plate 10 is fastened to the transmission case 24 by screws 34 screwed into respective tapped blind holes 36. The ends of the gear shafts 12 not born by the shaft bearings 18 connected to the support plate 10 are born by lower shaft bearings fixed to the transmission case 24, which is not illustrated in Fig. 2 for sake of clarity.
Further a final drive bearing 38 is inserted into the support plate 10 for bearing a final drive unit 40, which is designed as an assembly of a driven gear and a differential. The transmission case 24 further comprises a flange 42 providing a fastening surface 44 for fastening the clutch case 26 to the transmission case 24.
In the illustrated embodiment the clutch case 26 applies a holding force to the support plate 10 and presses the support plate 10 against the transmission case 24 for eliminating an axial clearance of the support plate 10.
The support plate 10 in turn applies a force to the gear shafts 12 via the shaft bearings 18, which are designed as ball bearing or cylindrical roller bearing, for eliminating an axial clearance of the gear shafts 12.
ferenceSigfls support plate 12 gear shaft 14 receiving opening 16 opening 18 shaft bearing gear box 22 through hole 24 transmission case 26 clutch case lateral surface 32 inner surface 34 screw 36 tapered blind hole 38 final drive bearing final drive unit 42 flange 44 fastening surface
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0905824A GB2469267A (en) | 2009-04-03 | 2009-04-03 | A gear case for supporting a gear assembly for an automobile and method of assembling such a gear case |
| PCT/EP2009/008916 WO2010112055A1 (en) | 2009-04-03 | 2009-12-14 | Gear case, gear box and method for assembling a gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0905824A GB2469267A (en) | 2009-04-03 | 2009-04-03 | A gear case for supporting a gear assembly for an automobile and method of assembling such a gear case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0905824D0 GB0905824D0 (en) | 2009-05-20 |
| GB2469267A true GB2469267A (en) | 2010-10-13 |
Family
ID=40750075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0905824A Withdrawn GB2469267A (en) | 2009-04-03 | 2009-04-03 | A gear case for supporting a gear assembly for an automobile and method of assembling such a gear case |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2469267A (en) |
| WO (1) | WO2010112055A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093645A (en) * | 2015-06-15 | 2018-05-29 | 格特拉格有限两合公司 | Dual-clutch transmission and transmission for vehicles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998059B (en) * | 2020-08-31 | 2022-12-20 | 重庆纳川重工设备制造有限公司 | Box body of gear box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441378A (en) * | 1981-01-26 | 1984-04-10 | Stewart-Warner Corporation | Gearbox drive for a speedometer |
| FR2664346A1 (en) * | 1990-07-07 | 1992-01-10 | Stober Antriebstechnik Gmbh Co | Gearing casing, particularly for gearing with straight-cut gears/worms, or worm gears |
| EP0926399A2 (en) * | 1997-12-17 | 1999-06-30 | PIAGGIO & C. S.p.A. | Adaptable transmission housing for motor vehicle with one or more driving wheels |
| WO2006105809A1 (en) * | 2005-04-01 | 2006-10-12 | Getriebebau Nord Gmbh & Co. Kg | Spur gear drive |
| DE102008004337A1 (en) * | 2007-04-13 | 2008-10-16 | Sew-Eurodrive Gmbh & Co. Kg | Housing for a transmission, process and gearbox series |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1443437A (en) * | 1973-02-07 | 1976-07-21 | Chrysler Uk | Gear boxes for motor vehicle |
| FR2726619B1 (en) * | 1994-11-04 | 1997-01-31 | Peugeot | TWO-SECONDARY SHAFT GEARBOX |
| DE10237424B4 (en) * | 2002-08-09 | 2005-11-17 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | Drive train and method for mounting a drive train |
| DE10349844A1 (en) * | 2003-10-25 | 2005-05-25 | Dr.Ing.H.C. F. Porsche Ag | Multi-stage manual transmission for an internal combustion engine |
| FR2880931B1 (en) * | 2005-01-14 | 2008-08-08 | Peugeot Citroen Automobiles Sa | BEARING CARRIER FOR A TRANSMISSION BOX AND TRANSMISSION BOX COMPRISING SUCH A CARTER |
-
2009
- 2009-04-03 GB GB0905824A patent/GB2469267A/en not_active Withdrawn
- 2009-12-14 WO PCT/EP2009/008916 patent/WO2010112055A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441378A (en) * | 1981-01-26 | 1984-04-10 | Stewart-Warner Corporation | Gearbox drive for a speedometer |
| FR2664346A1 (en) * | 1990-07-07 | 1992-01-10 | Stober Antriebstechnik Gmbh Co | Gearing casing, particularly for gearing with straight-cut gears/worms, or worm gears |
| EP0926399A2 (en) * | 1997-12-17 | 1999-06-30 | PIAGGIO & C. S.p.A. | Adaptable transmission housing for motor vehicle with one or more driving wheels |
| WO2006105809A1 (en) * | 2005-04-01 | 2006-10-12 | Getriebebau Nord Gmbh & Co. Kg | Spur gear drive |
| DE102008004337A1 (en) * | 2007-04-13 | 2008-10-16 | Sew-Eurodrive Gmbh & Co. Kg | Housing for a transmission, process and gearbox series |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093645A (en) * | 2015-06-15 | 2018-05-29 | 格特拉格有限两合公司 | Dual-clutch transmission and transmission for vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0905824D0 (en) | 2009-05-20 |
| WO2010112055A1 (en) | 2010-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |