WO2010112055A1 - Gear case, gear box and method for assembling a gear box - Google Patents

Gear case, gear box and method for assembling a gear box Download PDF

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Publication number
WO2010112055A1
WO2010112055A1 PCT/EP2009/008916 EP2009008916W WO2010112055A1 WO 2010112055 A1 WO2010112055 A1 WO 2010112055A1 EP 2009008916 W EP2009008916 W EP 2009008916W WO 2010112055 A1 WO2010112055 A1 WO 2010112055A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
support plate
case
shaft
transmission case
Prior art date
Application number
PCT/EP2009/008916
Other languages
French (fr)
Inventor
Per-Gunnar Bjorck
Original Assignee
Gm Global Technology Operations, Inc
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 Gm Global Technology Operations, Inc filed Critical Gm Global Technology Operations, Inc
Publication of WO2010112055A1 publication Critical patent/WO2010112055A1/en

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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
    • 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
    • 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
    • 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

Definitions

  • 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.
  • 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.
  • 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.
  • 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.
  • each gear shaft of the plurality of gear shafts can be supported by its respective shaft bearing connected to the support plate.
  • 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.
  • the support plate may be designed smaller and/or thinner than the clutch case, so that the handling is improved.
  • 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.
  • the gear shafts may be supported and adjusted be means of the support plate, the connection of the clutch case is facilitated.
  • 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.
  • 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.
  • 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.
  • 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.
  • the clutch case may be guided by one or more gear shafts supported by means of the support plate .
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 C ⁇ 2 ⁇ 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.
  • At least one sensor for monitoring a gear shaft is connected to the support plate.
  • a position sensor for detecting a turning angle of the gear shaft is connected to the support plate.
  • several sensors for monitoring a particular parameter of a gear shaft can easily be provided close to the gear shaft and 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 .
  • 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 fastening the clutch case to the transmission case.
  • 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.
  • 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.
  • Fig. 1 is a schematic perspective view of a support plate for a gear case according to the invention.
  • Fig. 2 is a schematic sectional partial view of a gear box comprising the support plate of
  • 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.
  • 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.
  • a gear case for the gear box 20 is provided, wherein this gear case receives and supports the gear shafts 12.
  • 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.
  • 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.
  • 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.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

It is provided 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).

Description

GM Global Technology Operations, Inc. December 10, 2009 Detroit MI 48265-3000, USA P005470-WO-PCT/SF
GEAR CASE, GEAR BOX AND METHOD FOR ASSEMBLING A GEAR BOX
D e s c r i p t i o n
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 features 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 CO2- 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 Cθ2~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 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 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.

Claims

C l a i m s
1. Gear case for supporting a gear assembly for an automobile, comprising
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)
characterized in that
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) .
2. Gear case according to claim 1 whereby the support plate (10) is arranged between the transmission case
(24) and the clutch case (26), wherein the support plate (10) contacts the transmission case (24) as well as the clutch case (26) .
3. Gear case according to claim 1 or 2 whereby a final drive bearing (38) for bearing a final drive unit (40) is connected to the support plate (10), wherein the final drive unit (40) is arranged mainly between the support plate (10) and the clutch case (26).
4. Gear case according to anyone of claims 1 to 3 whereby the number of shaft bearings (18) connected to the support plate (10) corresponds to the number of gear shafts (12) of the plurality of gear shafts
(12) .
5. Gear case according to anyone of claims 1 to 4 whereby the transmission case (24) comprises a fastening surface (44), where the clutch case (26) is fastened to the transmission case (24), wherein the support plate (10) is connected to the transmission case (24) shifted away from the clutch case (26) with respect to the fastening surface (44) .
6. Gear case according to anyone of claims 1 to 5 whereby the clutch case (26) provides a holding force in axial direction to at least one shaft bearing (18) connected to the support plate (10).
7. Gear case according to anyone of claims 1 to 6 whereby the support plate (10) provides a holding force in axial direction to at least one gear shaft (12) via the respective shaft bearing (18) connected to the support plate (10).
8. Gear case according to anyone of claims 1 to 7 whereby the support plate (10) is connected to the transmission case (24) via screws (34) screwed to a tapped blind hole (36) .
9. Gear case according to anyone of claims 1 to 8 whereby at least one shaft bearing (18) connected to the support plate (10) is designed as ball bearing or cylindrical roller bearing, wherein particularly all shaft bearings (18) connected to the support plate (10) are designed as ball bearing and/or cylindrical roller bearing.
10. Gear case according to anyone of claims 1 to 9 whereby at least one sensor for monitoring a gear shaft (12), particularly a position sensor for detecting a turning angle of the gear shaft (12) , is connected to the support plate (10) .
11. Gear box for an automobile, comprising a gear assembly supported by a gear case (24, 26, 10) according to anyone of claims 1 to 10.
12. Gear box according to claim 11 whereby the gear assembly comprises a plurality of gear shafts (12) , wherein at least one gear shaft (12) is supported by two shaft bearings (18), wherein one shaft bearing is connected to the transmission case (24) and the other shaft bearing (18) is connected to the support plate (10) .
13. Gear box according to claim 11 or 12 whereby the support plate (10) is kept in position by means of the transmission case (24) and the clutch case (26), particularly at least by clamping.
14. Method of assembling a gear box (20), particularly a gear box (20) according to anyone of claims 11 to
13, comprising the steps of
- providing a transmission case (24),
- inserting a plurality of gear shafts (12) into the transmission case (24), - connecting a support plate (10) to the transmission case (24), wherein at least two shaft bearings (18) are connected to the support plate (10), wherein the support plate (10) is connected to the transmission case (24) such, that each shaft bearing (18) connected to the support plate (10) bears one respective gear shaft (12), and - covering a major part of the plurality of gear shafts (12) by means of a clutch case (26) for receiving a gear case (24, 26, 10) according to anyone of claims 1 to 10.
R e f e r e n c e s i g n s
10 support plate
12 gear shaft
14 receiving opening
16 opening
18 shaft bearing 20 gear box
22 through hole
24 transmission case
26 clutch case
30 lateral surface 32 inner surface
34 screw
36 tapered blind hole
38 final drive bearing
40 final drive unit 42 flange
44 fastening surface
PCT/EP2009/008916 2009-04-03 2009-12-14 Gear case, gear box and method for assembling a gear box WO2010112055A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0905824.9 2009-04-03
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 (1)

Publication Number Publication Date
WO2010112055A1 true WO2010112055A1 (en) 2010-10-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/008916 WO2010112055A1 (en) 2009-04-03 2009-12-14 Gear case, gear box and method for assembling a gear box

Country Status (2)

Country Link
GB (1) GB2469267A (en)
WO (1) WO2010112055A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202583A1 (en) * 2015-06-15 2016-12-22 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Double-clutch transmission and vehicle transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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)

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Publication number Priority date Publication date Assignee Title
GB1443437A (en) * 1973-02-07 1976-07-21 Chrysler Uk Gear boxes for motor vehicle
FR2726619A1 (en) * 1994-11-04 1996-05-10 Peugeot Vehicle gearbox with two secondary shafts for use with transverse mounted engines
EP1388685A2 (en) * 2002-08-09 2004-02-11 GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG Drivetrain and method for assembling a drivetrain
EP1526305A2 (en) * 2003-10-25 2005-04-27 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Multiple ratio gearbox for internal combustion engine
FR2880931A1 (en) * 2005-01-14 2006-07-21 Peugeot Citroen Automobiles Sa Bearing support case for transmission gearbox, has bearing and is assembled between transmission case and clutch housing of gearbox using three screws, where two screws assure mechanical aspect and tightness to housing and transmission case

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US4441378A (en) * 1981-01-26 1984-04-10 Stewart-Warner Corporation Gearbox drive for a speedometer
CH684358A5 (en) * 1990-07-07 1994-08-31 Stoeber Antriebstech Gmbh & Co Gear housing, particularly for spur / worm gear or worm gear.
IT1296876B1 (en) * 1997-12-17 1999-08-02 Piaggio Veicoli Europ COMPACT VARIABLE STRUCTURE IN A MOTOR TRANSMISSION FOR MOTOR VEHICLES WITH ONE OR MORE DRIVE WHEELS
WO2006105809A1 (en) * 2005-04-01 2006-10-12 Getriebebau Nord Gmbh & Co. Kg Spur gear drive
DE102008004337B4 (en) * 2007-04-13 2023-10-05 Sew-Eurodrive Gmbh & Co Kg Housing for a gearbox, gearbox and gearbox series

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443437A (en) * 1973-02-07 1976-07-21 Chrysler Uk Gear boxes for motor vehicle
FR2726619A1 (en) * 1994-11-04 1996-05-10 Peugeot Vehicle gearbox with two secondary shafts for use with transverse mounted engines
EP1388685A2 (en) * 2002-08-09 2004-02-11 GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG Drivetrain and method for assembling a drivetrain
EP1526305A2 (en) * 2003-10-25 2005-04-27 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Multiple ratio gearbox for internal combustion engine
FR2880931A1 (en) * 2005-01-14 2006-07-21 Peugeot Citroen Automobiles Sa Bearing support case for transmission gearbox, has bearing and is assembled between transmission case and clutch housing of gearbox using three screws, where two screws assure mechanical aspect and tightness to housing and transmission case

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202583A1 (en) * 2015-06-15 2016-12-22 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Double-clutch transmission and vehicle transmission
DE112016002706B4 (en) * 2015-06-15 2018-11-08 GETRAG B.V. & Co. KG Dual-clutch transmission and vehicle transmission

Also Published As

Publication number Publication date
GB0905824D0 (en) 2009-05-20
GB2469267A (en) 2010-10-13

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