• 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:

    公开号:SE0950673A1
    申请号:SE0950673
    申请日:2009-09-16
    公开日:2011-03-17
    发明作者:Vidar Stroembom
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    Between the ordinary drive shaft and the component connected to the drive shaft in the drive line. However, this solution with the additional drive shaft means that the disengagement device occupies a considerable axial space, which in turn increases the axial length of the drive shaft gear.
    There is thus a need for a device for disengaging the wheel axle drive of a vehicle which takes up a limited space and is capable of transmitting large torques.
    SUMMARY OF THE INVENTION The object of the present invention is to provide a release device which meets the needs described above.
    The object is achieved by a device according to the independent claim.
    The device for disengaging the wheel axle drive of a vehicle is intended to be placed adjacent to a drive shaft for disengaging / engaging a driven unit to which the drive shaft is coupled and comprises: - at least one bearing mounted around the end of the drive shaft; a carrier coupled to the unit, or the drive shaft, and which has an inner cavity large enough to be placed enclosing the end of the drive shaft and the bearing and which is fixed in the bearing so that it is freely rotatable relative to the drive shaft; - a coupling ring rotationally coupled to the drive shaft and axially movable relative to the drive shaft; a coupling fork which is arranged at least partially enclosing the coupling ring and which is axially movable relative to the drive shaft; and - an actuator acting on the clutch fork to move it in the axial direction along the drive shaft; When connecting the drive shaft to the unit, the actuator moves the clutch fork and the clutch ring axially towards the carrier so that the drive shaft is rotationally coupled to the carrier and the unit via the clutch ring. 10 15 20 25 30 3 This device has the advantage that it can be placed in connection with a drive shaft emanating from a gearbox separated from the gearbox. This is a great advantage as the device can be easily combined with already existing gearboxes without these having to undergo time-consuming and costly modifications.
    The location of the device separated from the gearbox also means that the available space for the parts included in the device is considerably larger, which in turn enables the included parts to be dimensioned to withstand the large forces transmitted via the drive shaft on heavier vehicles.
    In addition, the device can be easily mounted in already existing vehicles in that it does not need to be integrated in the gearbox or the drive shaft gearbox to function satisfactorily.
    Another great advantage of the device according to the invention is that it can be inserted on existing constructions as the axial length of the drive shaft can be kept unchanged and the carrier connection to the driven unit means essentially only a slightly shorter drive shaft for transmitting torque from the carrier to said unit. This is made possible, among other things, by the release device being placed around the end of the drive shaft.
    The device according to the invention is, in that it is separated from the gearbox, also very easy to access during, for example, service or repairs.
    In one embodiment of the invention, the carrier is connected to one part of a universal joint. This placement of the device and its parts results in minimal changes to existing systems that do not have this connection / disconnection option. This location also means that the device is completely separated from the gearbox or drive at the opposite end of the drive shaft.
    In one embodiment of the device, the facing sides of the carrier and the coupling ring are provided with corresponding teeth. 10 15 20 25 30 4 This is an embodiment which provides a reliable connection of the carrier and the coupling ring and which enables power transmission in a satisfactory manner.
    In an embodiment of the device, the coupling ring is rotationally coupled to the shaft via an intermediate part and by means of a spline joint which allows the coupling ring to be moved axially relative to the shaft. This embodiment provides the properties of the attachment that are important for the function of the device, while at the same time keeping the gear forces during torque transmission at a reasonable level.
    In one embodiment of the device, the coupling fork is prevented from rotating with the coupling ring and the shaft. This embodiment results in a simple and functional product.
    In an embodiment of the device, the actuating device is driven by compressed air or an electric motor and acts in the axial direction towards the coupling fork when the coupling ring is to be engaged or disconnected from the carrier. Compressed air is used in many vehicles, for example brake systems, etc. and it is therefore good to use already existing systems.
    In one embodiment of the device, the coupling fork engages the coupling ring around a groove in the outer periphery of the coupling ring. This design of the parts results in a simple and reliable solution where the coupling fork slides in the groove in the outer periphery of the coupling ring.
    The present invention also relates to vehicles comprising at least one gearbox and a drive shaft extending therefrom and a device according to one of the embodiments of the invention. The present invention provides great advantages when mounted in, for example, trucks with tandem drive as it can be used to disengage drive shafts that are not needed, thereby reducing the vehicle's fuel consumption. In one embodiment of the vehicle, the device is placed adjacent to a universal joint. This location and design means that few of the other components of the vehicle need to be modified to introduce the device into already designed vehicles.
    Brief description of the figures The invention is explained in more detail below with reference to drawing figure 1 which shows the device in cross-section schematically.
    DETAILED DESCRIPTION OF THE INVENTION Figure 1 shows a first embodiment of the device 10 for disengaging / engaging a drive shaft 11 to a unit (not shown). The illustrated embodiment of the device 10 comprises two bearings 12 which are mounted around the drive shaft 11 near its end 13 for bearing bearing a carrier 14.
    The carrier 14 has a larger outer diameter than the drive shaft 11 and an inner cavity whose diameter is larger than the outer diameter of the two bearings 12 so that the carrier can be placed in such a way that it encloses the end 13 of the drive shaft 11 and its end nut. The carrier 14 is fixed in the bearings 12 and is thus freely rotatable relative to the drive shaft 11. The end of the carrier 14 is provided around its entire circumference with toothed tracks 18 and the opposite end of the carrier 14 which is turned from the drive shaft 11 in this embodiment forms part of a universal joint which is used for power transmission and angular correction in a transmission system.
    The device further comprises a coupling ring 15 rotationally coupled to the drive shaft 11 and axially movable relative thereto. This is possible via a spline joint which rotationally couples the coupling ring 15 to the shaft 11 at the same time as it is allowed to slide along the spline joint. This joint consists of axially extending bars or grooves grooves, usually called splines formed on the facing surfaces of the shaft 11 and the coupling ring 15, respectively. The splines on each surface cooperate with each other so that the ring 15 and the shaft 11 can be moved axially relative to each other but are prevented from rotating relative to each other.
    The coupling ring 15 is arranged either directly around the drive shaft 11 or as in the figure where there is also an intermediate part 16 placed between the drive shaft 11 and the coupling ring 15. The part 16 is in its axially outer end bearing seat for the bearing 12 of the carrier 14 and has on its radially outer part splines, which cooperate with corresponding splines on the coupling ring 15 so that the ring 15 is axially displaceable relative to the part 16 along the splines joint between them. The position in the radial direction of the spline joint between the part 16 and the coupling ring 15 is adapted so that the tooth forces can be handled on the axial distance which the spline joint has.
    A coupling fork 17 is arranged around the coupling ring 15. This is designed in such a way that it at least partially encloses the coupling ring 15.
    The coupling fork 17 is just like the coupling ring 15 axially movable relative to the drive shaft 11. The coupling fork 17 engages the coupling ring 15 via a groove in the outer surface of the coupling ring and has the task of moving the coupling ring 15 between a position in engagement with the carrier and a position disengaged from the carrier. The coupling fork 17 is anchored to the surrounding structure.
    The device further comprises an actuating member 20 acting on the coupling fork 17 to move it, and thereby also the coupling ring 15 anchored in the coupling fork, in axial direction along the drive shaft 11. The actuating device 20 can have different design as long as it generates the necessary movement of the coupling fork 17 and associated coupling ring in the desired direction.
    When the drive of the driven unit is not engaged, no engagement takes place between the teeth 19 on the gear ring 15 and the tooth paths of the driver 14. The drive shaft rotation is thereby not transmitted to the driver 14. When connecting the drive shaft 11 to the unit not shown to be driven, the actuator 20 is activated via control means (not shown) so that it moves the coupling fork 17 in the axial direction from the actuator 20. The movement of the coupling fork 17 then generates, thanks to the engagement between the coupling fork 17 and the coupling ring 15, also a movement of the coupling ring 15 in the axial direction towards the carrier 14. 7 the coupling ring 15 reaches the carrier ring, the toothed tracks 18 on the carrier ring and the teeth 19 on the coupling ring 15 are connected so that the carrier ring 14 is thereby rotationally locked to the drive shaft 11 whereupon the required torque can be transmitted from the drive shaft 11 to the drive unit (not shown) via the coupling ring 15 and the carrier 14.
    The figure also shows a further bearing 21 for stabilizing the drive shaft 11, a surrounding housing 22 for protecting the parts included in the device 10 and a structure 23 in which the device is anchored. It should be noted that both the carrier 14 itself and its engagement and disengagement via the coupling ring 15 and cooperating parts therewith are located on the end of the drive shaft 11 axially outside the bearing 21.
    The carrier 14 is rotatable relative to sealing elements which at the outer radial surface of the carrier 14 seal against the housing 22.
    The invention has been described on the basis of an embodiment, but the device and the design of the constituent parts can be modified without departing from the inventive concept. For example, the design of the parts can be modified.
    - Additional parts or components can be added to optimize the device for a specific application.
    - The specific location of the device in existing systems can be alternated based on prevailing conditions such as available space. Although the invention has been described on the basis of some exemplary embodiments, the invention is not limited to these but is defined on the basis of the appended claims.
    权利要求:
    Claims (1)
    [1]
    A device (10) for disengaging a wheel axle drive of a vehicle, said device being intended to be placed adjacent to a drive shaft (11) for disengaging / engaging a driven unit to which the drive shaft (11) is coupled, said device (10) comprises: - at least one bearing (12) mounted around the end (13) of the drive shaft (11); - a carrier (14) coupled to the unit, or the drive shaft, and which has an inner cavity large enough to be placed enclosing the end (13) of the drive shaft and the bearing (12) and which is fixed in the bearing (12) so that it is freely rotatable relative to the drive shaft (11); - a coupling ring (15) rotationally coupled to the drive shaft (11) and axially movable relative to the drive shaft (11); - a coupling fork (17) which is arranged at least partially enclosing the coupling ring (15) and which is axially movable relative to the drive shaft (11); and - an actuator (20) acting on the clutch fork (17) for moving it in the axial direction along the drive shaft (11); wherein the actuator (20) when connecting the drive shaft (11) to the unit moves the coupling fork (17) and the coupling ring (15) axially towards the carrier (14) so that the drive shaft (11) is rotationally coupled to the carrier (14) and the unit via the coupling ring (15). Device (10) according to claim 1, characterized in that the carrier (14) is connected to one part of a universal joint. Device (10) according to claim 1 or 2, characterized in that the facing sides of the carrier (14) and the coupling ring (15) are provided with corresponding teeth. Device (10) according to one of the preceding claims, characterized in that the coupling ring (15) is rotationally coupled to the drive shaft (15) by means of a spline joint which allows the coupling ring (15) to be moved axially relative to the drive shaft. (11). Device (10) according to claim 4, characterized in that the spline joint is formed between the coupling ring (15) and a part 16 intermediate between the drive shaft (11), which part 16 in turn is a torque transmitting device arranged on the drive shaft (1 1) and carries a bearing (12 ) for the carrier (14). Device (10) according to one of the preceding claims, characterized in that the coupling fork (17) is prevented from rotating with the coupling ring (15) and the drive shaft (11). Device (10) according to one of the preceding claims, characterized in that the actuating device (20) is driven by compressed air or an electric motor and acts in the axial direction towards the coupling fork (17) when the coupling ring (15) is to be engaged or disconnected from the carrier (14). Device (10) according to one of the preceding claims, characterized in that the coupling fork (17) engages the coupling ring (15) around a groove in the outer periphery of the coupling ring (15). Vehicle comprising at least one gearbox or axle gear and a drive shaft extending therefrom and a device (10) according to any one of claims 1 to 7 located separately from the gearbox or axle gear. A vehicle according to claim 9, wherein the device (10) is located adjacent to a universal joint for the transmission of driving force between a first and a second driving wheel axle.
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    同族专利:
    公开号 | 公开日
    BR112012005862A2|2016-02-16|
    KR101360381B1|2014-02-07|
    KR20120068918A|2012-06-27|
    WO2011034489A1|2011-03-24|
    EP2478241A1|2012-07-25|
    EP2478241A4|2013-03-27|
    EP2478241B1|2014-07-09|
    IN2012DN02258A|2015-08-21|
    JP2013505164A|2013-02-14|
    JP5606538B2|2014-10-15|
    US20120168273A1|2012-07-05|
    CN102667204B|2015-09-09|
    SE534116C2|2011-05-03|
    US10145423B2|2018-12-04|
    CN102667204A|2012-09-12|
    RU2488027C1|2013-07-20|
    引用文献:
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    DE102006057218A1|2006-12-01|2008-06-05|Gkn Driveline International Gmbh|Drive arrangement with intermediate shaft and coupling unit|RU2693390C2|2014-04-04|2019-07-02|Текнолоджи Инвестментс Лимитед|Coupling shifting device|
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    DE102019110478A1|2019-04-23|2020-10-29|Schaeffler Technologies AG & Co. KG|Vector group and drive train with such a vector group|
    CN112026513B|2020-09-07|2022-02-15|中国第一汽车股份有限公司|Disconnecting device and coaxial electric drive system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE0950673A|SE534116C2|2009-09-16|2009-09-16|Disconnection of drive|SE0950673A| SE534116C2|2009-09-16|2009-09-16|Disconnection of drive|
    BR112012005862A| BR112012005862A2|2009-09-16|2010-09-14|driver decoupling device|
    PCT/SE2010/050977| WO2011034489A1|2009-09-16|2010-09-14|Uncoupling of drive|
    RU2012114809/11A| RU2488027C1|2009-09-16|2010-09-14|Drive disengagement device|
    JP2012529712A| JP5606538B2|2009-09-16|2010-09-14|Uncouple drive mechanism|
    US13/496,535| US10145423B2|2009-09-16|2010-09-14|Uncoupling of drive|
    EP10817515.9A| EP2478241B1|2009-09-16|2010-09-14|Uncoupling of drive|
    KR1020127009783A| KR101360381B1|2009-09-16|2010-09-14|Uncoupling of drive|
    CN201080041047.2A| CN102667204B|2009-09-16|2010-09-14|Drive cut off|
    IN2258DEN2012| IN2012DN02258A|2009-09-16|2012-03-15|
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