• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a synchronizing device (10) for a gearbox (6) comprising a first brake wheel (12) for engaging a first gear (14) on a first axle (16), a second brake wheel (18) for engaging a second gear ( 20) on a second shaft (22), which first gear (14) is arranged to drive the first brake wheel (12), and which second gear (20) is arranged to drive the second brake wheel (18). A brake element (24) is arranged between the first and second brake wheels (12, 18), which brake element (24) is arranged to reduce the speed difference between the first and second axles (16, 22) when the brake element (24) exerts a braking torque between the first and second brake wheels (12, 18). The invention also relates to a gearbox (6), which comprises such a synchronizing device (10). The invention also relates to a vehicle (1), which comprises such a gearbox (6). (Fig. 2)
    公开号:SE1350083A1
    申请号:SE1350083
    申请日:2013-01-28
    公开日:2014-07-29
    发明作者:Dieter Slapak
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    SUMMARY OF THE INVENTION Despite known solutions, there is a need to further develop a synchronization device for a gearbox, so that the gearbox and thus the vehicle in which the gearbox is mounted can be made shorter and with lower weight, which would result in a cost saving in the manufacture of both the gearbox and the vehicle as well as a saving of fuel for operation of the vehicle. If the vehicle's consumption of fuel can be reduced, there are also conditions for reducing emissions of emissions from the vehicle.
    The object of the present invention is thus to provide a synchronizing device for a gearbox which entails a limited length extension of the gearbox.
    A further object of the invention is to provide a synchronizing device for a gearbox which carries a low weight of the gearbox. Yet another object of the invention is to provide a synchronizing device for a gearbox which results in an increased service life of the gearbox.
    These objects are achieved with a synchronizing device for a gearbox of the type mentioned in the introduction, which is characterized by the features stated in claim 1.
    By replacing the synchronizing rings with synchronizing devices, which comprise a braking element between the first and second brake wheels, the first and second axles can be braked to a suitable speed, so that a synchronous shift between two gear stages can be performed in the gearbox.
    According to an embodiment of the invention, the brake element can be constituted by a disc brake, which can be controlled pneumatically or hydraulically. At least one speed sensor may be coupled to the first and second shafts for sensing the speed of the first and second shafts and for determining the control of the synchronizing devices when switching between different gear positions is to be performed.
    By operating the synchronizing device, according to an embodiment of the invention, the speed of the input shaft of a range gearbox can also be controlled, so that switching between the 10 different gear positions in the range gearbox can take place without the effect and need of synchronizing ring.
    As an example, a traditional dual-clutch gearbox with eight synchronizing rings can be replaced with four synchronizing devices according to the invention. Thus, the size, weight and manufacturing cost of the gearbox can be reduced by means of the proposed invention.
    By combining a dual-clutch gearbox with a range gearbox, a very large number of gearshifts can be obtained, which results in increased maneuverability of a vehicle. When the dual-clutch gearbox is combined with a range gearbox, the synchronization rings of the range gearbox can be omitted, which results in a reduced size, weight and manufacturing cost of the range gearbox. An increased service life of the dual-clutch gearbox and range gearbox can also be expected.
    The above objects are also achieved with a gearbox of the type mentioned in the introduction, which is characterized by the features stated in claim 8.
    The above objects are also achieved with a vehicle of the type mentioned in the introduction, which is characterized by the features stated in claim 10.
    Further features and advantages of the invention will become apparent from the following description examples.
    BRIEF DESCRIPTION OF THE DRAWINGS In the following, as an example, a preferred embodiment of the invention is described with reference to the accompanying drawings, in which: Fig. 1 shows in a schematic side view a vehicle comprising a gearbox according to the present invention, Fig. 2 shows a partial view of the gearbox comprising a synchronizing device according to the present invention, Fig. 3 shows a partial view of the gearbox according to fi g. 2 in another sectional plane, and Fig. 4 shows a partial view of the gearbox according to the present invention provided with a range gearbox.
    DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION Fig. 1 shows a vehicle 1 in a schematic side view, which vehicle 1 is provided with an internal combustion engine 2, which drives the drive wheel 4 of the vehicle 1 via a gearbox 6 according to the present invention. The gearbox 6 is connected to the drive wheels 4 via a conventional transmission comprising, among other things, a propeller shaft 8.
    Fig. 2 shows a partial view through of the gearbox 6, which comprises a synchronizing device 10 according to the present invention. The synchronizing device 10 comprises a first brake wheel 12 for engaging a first gear 14 on a first shaft 16 and a second brake wheel 18 for engaging a second gear 20 on a second shaft 22. The first gear 14 is arranged to drive the first brake wheel 12 and the second gear 20 is arranged to drive the second brake wheel 18. The synchronizing device 10 also comprises a brake element 24 in the form of a disc brake 24, which is arranged between the first and second brake wheels 12, 18. The disc brake 24 has the task of reducing the speed difference between the first and second axles 16, 22 by applying a braking torque between the first and second brake wheels 12, 18.
    At a predetermined speed difference between the first and second shafts 16, 22 or when the first and second shafts 16, 22 are stationary or rotating at the same speed, a shift takes place between different gear stages in the gearbox 6. To sense the speed of the first and second shafts second shaft 16, 22 at least one speed sensor 26 is arranged at the first and second shafts 16, 22. As an alternative, the first and second shafts 16, 22 can be provided with their own speed sensor. Knowing the speed of the first and second shafts 16, 22, the first and second shafts 16, 22 can be braked by means of the synchronizing device 10 to a speed and a speed difference which allows synchronous switching between two gear stages in the gearbox 6.
    The first sprocket 12 is mounted on a first brake shaft 28 and the second brake wheel 18 is mounted on a second brake shaft 30, which brake shafts 28, 30 are coaxial and rotatably mounted in the gearbox 6. The first and second brake shafts 28, 30 are connected with the disc brake 24. The first and second brake wheels 12, 18 are provided with teeth 32 for engagement with the respective first and second gears 14, 20. Thus, the brake wheels 12, 18 according to the embodiment shown will be designed as gears. or gear rings.
    The gearbox 6 according to the embodiment shown is a double-clutch gearbox, where the first and second shafts 16, 22 are arranged coaxially in relation to each other. The first and second shafts 16, 22 can be alternately connected and disconnected by means of a coupling device 34 and the drive shaft 36 of the internal combustion engine 2. The first gear 14 is according to the embodiment shown in Fig. 2 arranged on the first shaft 16 and the second gear 20. is arranged on the second shaft 22.
    Fig. 3 shows a partial view of the gearbox 6 according to Fig. 2, but in a different sectional plane. From Fig. 3 it can be seen that the first and second gears 14, 20 are in engagement with the respective first and second gear elements 38, 40, which are rotatably mounted on a side shaft 42. By braking the first and second shaft 16, 22 to at a suitable speed, the gear elements 38, 40 on the side shaft 42 can be engaged and disengaged with the side shaft 42 by means of control sleeves 44, which are controlled by control forks not shown. Thus, different gear positions can be obtained in the gearbox 6. In a dual-clutch gearbox 6, more than one side shaft 42 is arranged depending on the number of gear stages. However, only one side axis 42 is shown in the figures. In case the side shafts 42 are arranged in the gearbox 6, preferably also the synchronizing devices 10 according to the invention are arranged in the gearbox 6. As an example, a traditional double-clutch gearbox with eight synchronizing rings can be replaced by four synchronizing devices 10 according to the invention. Thus, the size, weight and manufacturing cost of the gearbox 6 can be reduced.
    By combining the dual-clutch gearbox 6 with a gearbox 46, a very large number of gear steps can be obtained, which results in increased maneuverability of the vehicle 1. When the dual-clutch gearbox 6 is combined with a gearbox 46, the synchronizing rings of the gearbox 46 can also be eliminated. of the gearbox 46. An increased life of the dual clutch gearbox 6 and the gearbox 46 can also be expected when traditional synchronizing rings are replaced by the synchronizing devices 10 according to the invention.
    Fig. 4 shows a partial view of the gearbox according to the invention. A range gearbox 46 is arranged at the output shaft of the gearbox 6. The range gearbox 46 comprises a planetary gear 48 with a sun gear 50, a planet gear holder 52 on which planet gears 54 are mounted and an axially displaceable ring gear 56. According to the embodiment shown in FIG. 4, the first shaft 16 constitutes the sun gear 50 in the gearbox 46, which sole wheel 150 engages the first brake wheel 12 of the synchronizing device 10. The second shaft 22 constitutes the planet gear holder 52, which is mounted on the first shaft 16. The planet wheel holder 52 engages therewith. the second brake wheel 18, the synchronizing device 10 being designed to control the sun gear 50 and the planet gear holder 52 to a speed difference which allows the ring gear 56 to be engaged with the planet gear holder 52 or with a gearbox housing 58 arranged around the gearbox 46 depending on whether the gearbox low or high gear. The axial displacement of the ring wheel 56 is effected with a control fork (not shown).
    The stated components and features stated above can within the scope of the invention be combined between different specified embodiments.
    权利要求:
    Claims (10)
    [1]
    A gearbox synchronizing device (6) comprising: a first brake wheel (12) for engaging a first gear (14) on a first axle (16), a second sprocket (18) for engaging a second gear (20) on a second axle (22), which first gear (14) is arranged to drive the first brake wheel (12), and which second gear (20) is arranged to drive the second brake wheel (18), characterized by a brake element (24), which is arranged between the first and second brake wheels (12, 18), which brake element (24) is arranged to reduce the speed difference between the first and second axles (16, 22) when the brake element (24) exerts a braking torque between the first and the second brake wheel (12, 18).
    [2]
    Synchronizing device according to claim 1, characterized in that the first brake wheel (12) is arranged on a first brake shaft (28) and the second brake wheel (18) is arranged on a second brake shaft (30), which brake shafts (28, 30) are coaxial and rotatably mounted in the gearbox (6).
    [3]
    Synchronizing device according to Claim 2, characterized in that the first and second brake shafts (28, 30) are connected to the well element (24).
    [4]
    Synchronizing device according to one of the preceding claims, characterized in that the well element (24) is a disc brake.
    [5]
    Synchronizing device according to one of the preceding claims, characterized in that the first and second brake wheels (12, 18) are provided with teeth (32) for engaging the respective first and second gears (14, 20).
    [6]
    Synchronizing device according to one of the preceding claims, characterized in that at least one speed sensor (26) is arranged to sense the speed of the first and second shafts (16, 22).
    [7]
    Synchronizing device according to one of the preceding claims, characterized in that the first shaft (16) is connected to a sun gear (50) in a gearbox (46), which sun gear (50) is in engagement with the first brake wheel ( 12), and the second shaft (22) is connected to a planet gear holder (52) mounted on the sun gear (50) in the gearbox (46), which planet gear holder (52) is engaged with the second brake wheel (18), the synchronizing device ( 10) is designed to steer the sun gear (50) and the planet gear holder (52) to a speed difference which allows a ring gear (5 6) arranged at the gearbox (46) to be engaged with the planet gear holder (52) or with a gearbox around the gearbox (46) arranged gearbox housing (58) depending on whether the range gearbox (46) is to be shifted to low or high gear.
    [8]
    Gearbox (6), characterized in that it comprises a synchronizing device (10) according to claim 1.
    [9]
    Gearbox (6) according to Claim 8, characterized in that the gearbox (6) is a dual-clutch gearbox.
    [10]
    Vehicle (1), characterized in that it comprises a gearbox (6) according to claim 8.
    类似技术:
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    同族专利:
    公开号 | 公开日
    KR20150105427A|2015-09-16|
    DE112014000339T5|2015-10-29|
    KR101740011B1|2017-05-25|
    SE540199C2|2018-04-24|
    WO2014116176A1|2014-07-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4727472A|1986-03-31|1988-02-23|Motorola, Inc.|Servo control system for transmission shaft speed control|
    SE465687B|1989-12-27|1991-10-14|Saab Scania Ab|VOEXELLAADA FOR MOTOR VEHICLES, WITH ANOTHER VEHICLE COMMON SYNCHRONIZING DEVICE|
    JP2001311466A|2000-04-28|2001-11-09|Fuji Heavy Ind Ltd|Shift controller|
    DE102006036758B4|2006-08-05|2015-03-12|Zf Friedrichshafen Ag|Automated dual-clutch transmission of a motor vehicle|
    JP4914677B2|2006-08-30|2012-04-11|本田技研工業株式会社|Twin clutch transmission in a vehicle power unit|
    DE102009030783A1|2009-06-27|2010-02-04|Daimler Ag|Duplex clutch transmission device for motor vehicle, has transmission shaft for connection of gear, another transmission shaft, for connection of another gear and active synchronization unit for gear synchronization|SE540450C2|2015-10-06|2018-09-18|Scania Cv Ab|A method for controlling a gearbox, a gearbox and a vehicle provided with such a gearbox|
    SE539248C2|2015-10-06|2017-05-30|Scania Cv Ab|A method for controlling a gearbox, a gearbox and a vehicle provided with such a gearbox|
    法律状态:
    2021-08-31| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1350083A|SE540199C2|2013-01-28|2013-01-28|Double clutch gearbox with a synchronizer and vehicles with such a dual clutch gearbox|SE1350083A| SE540199C2|2013-01-28|2013-01-28|Double clutch gearbox with a synchronizer and vehicles with such a dual clutch gearbox|
    KR1020157021429A| KR101740011B1|2013-01-28|2014-01-27|Synchronisation device for a gearbox, gearbox comprising such a synchronisation device and vehicle with such a gearbox|
    PCT/SE2014/050094| WO2014116176A1|2013-01-28|2014-01-27|Synchronisation device for a gearbox, gearbox comprising such a synchronisation device and vehicle with such a gearbox|
    DE112014000339.5T| DE112014000339T5|2013-01-28|2014-01-27|Synchronization device for a transmission, transmission with such a synchronization device and vehicle with such a transmission|
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