EP1474302A1 - Achsantriebsblock mit differentialsperre - Google Patents
Achsantriebsblock mit differentialsperreInfo
- Publication number
- EP1474302A1 EP1474302A1 EP03706104A EP03706104A EP1474302A1 EP 1474302 A1 EP1474302 A1 EP 1474302A1 EP 03706104 A EP03706104 A EP 03706104A EP 03706104 A EP03706104 A EP 03706104A EP 1474302 A1 EP1474302 A1 EP 1474302A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- differential
- planet carrier
- drive block
- housing
- ring
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
- B60K17/346—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear
- B60K17/3462—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear with means for changing distribution of torque between front and rear wheels
- B60K17/3465—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear with means for changing distribution of torque between front and rear wheels self-actuated means, e.g. differential locked automatically by difference of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
- B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
- B60K23/0808—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch
Definitions
- the invention relates to an axle drive block for motor vehicles with a first and a second driven axle, which contains a first and a second differential in a housing driven by an engine-transmission block, the first differential being the torque supplied between a first semiaxis first driven axle and the second differential and the second differential further distributes the torque supplied to it between a second semi-axle of the first driven axle and an output for the second driven axle, both differentials being parallel-axis spur planetary gears, the sun wheels of which are each connected to the semi-axles of the first driven axis are connected to the drive, and mesh with their common ring gear planet gears of both differentials, one planet carrier being non-rotatably connected to the housing accommodating both differentials and the other planet carrier being connected to the output is connected to the drive for the second driven axis.
- Such an axle drive block is known from DE 44 18 891 C2. Thanks to the special design and arrangement of the two differentials, an optimal adjustment of the torque distribution ratio is achieved with minimal construction work.
- a fluid friction clutch is provided as a longitudinal differential lock. This is not only complex and bulky (which is why it has to be driven via a hollow shaft, must be arranged outside the housing of the two differentials), it also has the disadvantage that it is not suitable for interaction with braking force or slip limitation systems (ABS, ESP) to be.
- the fluid friction clutch is a speed sensitive lock.
- a friction clutch is formed between the planet carrier (40) of the second differential (19) and the housing (22), f) which consists of an axially normal first friction surface on an inner wall of the housing and of one with the planet carrier (40) of the second differential (19) operatively connected ring with a second friction surface, g) the ring being rotatable with respect to the second planet carrier and the distance between the first and second friction surfaces changing upon rotation.
- the blocking is done by friction, gradually. Because of e), only the central differential can be locked (that is, the locking effect between the first and second driven axles) without the torque distribution between the two wheels of the first driven axle becoming asymmetrical. Thanks to its small footprint, the friction clutch can be accommodated within the housing and switched on in the shortest possible way (without the interposition of shafts, whose torsion can lead to vibrations).
- the active connection between the planet carrier and the ring, via which the torque is directed to the second driven axle, makes the lock feel torque, which means that it is self-controlling and ABS or ESP compatible without external influences.
- the desired locking behavior can be represented within wide limits by constructive design of the operative connection.
- the second planet carrier and / or the ring has an end face with ramps rising in the axial direction (claim 2).
- the desired locking behavior is created with the shape and slope of the ramps.
- the ramps rise from a neutral position in both circumferential directions (i.e. in a different direction of rotation) at different levels (claim 4.5).
- the locking behavior in train operation can be designed differently than in overrun mode.
- a falling ramp is followed by an increasing one.
- the second planet carrier and the ring have an end face with ramps rising in the axial direction (claim 2).
- the ramps of the two parts slide on each other when rotated and thus determine the axial position of the ring. Due to the mechanical friction between the two ramps, the effect responds first to a certain "felt" torque.
- the second planet carrier and / or the ring has a flat end face with recesses which form ramps and which accommodate rolling elements (claim 3). So the effect is practically smooth and sensitive. In addition, the space requirement and manufacturing effort are less.
- first and second clutch plates between the first and the second friction surface, of which the first are connected to the inner wall of the housing and the second to the ring in a rotationally fixed and axially displaceable manner (claim 6).
- first and second clutch plates between the first and the second friction surface, of which the first are connected to the inner wall of the housing and the second to the ring in a rotationally fixed and axially displaceable manner (claim 6).
- FIG. 2 an axial section through the double differential in FIG. 1
- FIG. 3 detail III in FIG. 2 in a first embodiment
- FIG. 4 a circumferential section according to IV-IV in FIG. 3
- FIG. 5 detail III 2 in a second embodiment
- FIG. 6 detail III in FIG. 2 in a third embodiment
- FIG. 7 a circumferential section according to VII-VII in FIG. 6.
- the engine is denoted by 1, the clutch by 2 and the manual transmission by 3.
- the transmission 3 ends in an output gear 4, which meshes with a large drive gear 5.
- the drive gear 5 is already part of the axle drive block 6.
- This is followed by an output 7 for the rear axle drive and a right and a left semiaxis 8.9 for driving the front wheels.
- Inside the output 7 there is a pair of bevel gears 10.1 1 and the torque for the rear axle is fed via a propeller shaft 12 to a conventional differential gear 13, for example, in which the semiaxes 16, 17 of the are used in a known manner via a pair of bevel gears 14, 15 Rear wheels are driven.
- the housing 22 consists of two housing parts 23, 24, which are clamped here together with the drive gear 5 by means of threaded bolts 25.
- the axial position of the parting line between the two housing parts can be determined according to external requirements, either both can be of the same depth or one of the housing parts is a flat cover and the other a deep bell.
- the first housing part 23 is simultaneously a planet carrier of the first differential gear 18 and, for example, is firmly connected to the bell-shaped housing part 24 by means of the threaded bolts 25. Both together thus form a rigid part which is rotatably mounted in the housing 20,21 by means of bearings 26,27.
- This first planetary gear 18 further includes planet gears 31 rotatable about axes 30 and a sun gear 32, which is connected by means of spline teeth 33 to the left output shaft 34, to which the semiaxis 9 (FIG. 1) connects.
- a ring gear 35 surrounds the planet gears 31 of the first planetary gear 18 and is also the ring gear of the second planetary gear 19. It meshes with the outer planet gears 36 of the second planetary gear 19, which are mounted on axes 37, which in turn are fastened in the second planet carrier 40.
- the first planet gears 36 also mesh with second planet gears 38, which are also mounted on axles 39 on the planet carrier 40.
- the second planet gears 38 mesh with a sun gear 43, which is connected to the right output shaft 45 via a spline 44. This leads to the right front wheel via the right axle drive shaft 8 (FIG. 1).
- DE 44 18 891 This leads to the right front wheel via the right axle drive shaft 891.
- the power flow is as follows: the torque acting on the housing 24 is first divided in the first planetary gear 18 between the sun gear 32 and thus the left front final drive shaft 9 and the ring gear 35, which establishes the connection between the first and second planetary gear units. In the second planetary gear 19, the torque is distributed over the planet gears 36, 38, on the one hand their planet carrier 40 and thus the output 7 for the rear wheels, and on the other hand on the sun gear 43 and thus the right semiaxis 8 of the front wheel drive.
- a friction clutch 50 is now provided between the planet carrier 40 of the second differential 19 and the housing 24 (FIG. 1), which acts between an axially normal first friction surface 51 and a second friction surface 53 formed on a ring 52.
- the ring 52 is operatively connected to the planet carrier 40 and simultaneously establishes the drive connection between the latter (40) and the hollow shaft 42 leading to the drive of the second axis.
- the planet carrier 40 is connected via a spline toothing 41 to a hollow shaft 42 which leads into the output 7 for the rear axle (FIG. 1).
- Fig. 3 shows the active connection in more detail.
- the ring 52 has a hub 54 seated on the hollow shaft 42 and on the side facing away from the friction surfaces 51, 53 at least two recesses 55 evenly distributed on the circumference.
- the disc 57 of the planet carrier 40 has the same recesses 56. Between the recesses There are balls 58, 55, 56.
- a friction lining 70 can, but need not, be present. 4 that the depressions 55, 56 each form a first (59, 59 ') and a second (60, 60') ramp 59, 60. Since their lengths are 61.62 different, the slope of the two ramps is also different.
- first and second clutch plates 165, 166 are provided between the first friction surface 151 and the second friction surface 153 to increase the friction at the same contact pressure.
- the former (165) are rotatably connected to the housing 24 by means of teeth 167 and axially displaceable; second (166) over teeth 168 with the ring 52. Any springs that may be present cannot be seen.
- Fig. 6 differs from Fig. 3 in that instead of the recesses and rolling elements sliding blocks are provided, as can be seen better in the circumferential section in Fig. 7.
- the disk 256 of the planet carrier 40 has two or more hump-shaped ramps 265 which are distributed over the circumference and which, along their generatrices, touch the ramps 259, 260, which can also have different shapes.
- the ramps 265, 259, 260 protrude in the axial direction from the end faces 268, 269 of the ring 252 and disk 256.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT8002U | 2002-02-08 | ||
AT0008002U AT6082U1 (de) | 2002-02-08 | 2002-02-08 | Achsantriebsblock für ein kraftfahrzeug |
PCT/AT2003/000033 WO2003066362A1 (de) | 2002-02-08 | 2003-02-05 | Achsantriebsblock mit differentialsperre |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1474302A1 true EP1474302A1 (de) | 2004-11-10 |
Family
ID=3480985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03706104A Ceased EP1474302A1 (de) | 2002-02-08 | 2003-02-05 | Achsantriebsblock mit differentialsperre |
Country Status (5)
Country | Link |
---|---|
US (1) | US7083541B2 (de) |
EP (1) | EP1474302A1 (de) |
AT (1) | AT6082U1 (de) |
CA (1) | CA2475541C (de) |
WO (1) | WO2003066362A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7041026B2 (en) * | 2004-02-10 | 2006-05-09 | Hideaki Okada | Differential assembly and transaxle including it |
US7357210B2 (en) * | 2004-04-08 | 2008-04-15 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Vehicle power transmission system |
US7140994B2 (en) * | 2004-06-18 | 2006-11-28 | Paccar Inc | Gearbox torsional load sensor |
US7361118B2 (en) * | 2004-07-20 | 2008-04-22 | Nabco Limited | Gear mechanism and reduction planetary gear |
JP4399350B2 (ja) * | 2004-07-30 | 2010-01-13 | 本田技研工業株式会社 | 車両用四輪駆動装置 |
DE102005053555B3 (de) * | 2005-11-08 | 2007-08-02 | Gkn Driveline International Gmbh | Kugelrampenanordnung mit variabler Steigung der Kugelrillen |
DE102009033531A1 (de) * | 2009-07-10 | 2011-01-20 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Antriebsvorrichtung für ein Kraftfahrzeug mit einer elektrische Maschinen aufweisenden Portalachse |
DE102010010438A1 (de) * | 2010-02-26 | 2011-09-01 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Fahrwerk für ein Kraftfahrzeug mit einer elektrichen Achse |
KR101463300B1 (ko) * | 2012-06-18 | 2014-11-21 | 성균관대학교산학협력단 | 다중 출력 차동 장치 |
DE102013206749B4 (de) * | 2013-04-16 | 2018-08-30 | Schaeffler Technologies AG & Co. KG | Differentialgetriebe |
DE102013206757A1 (de) * | 2013-04-16 | 2014-10-16 | Schaeffler Technologies Gmbh & Co. Kg | Differentialgetriebe |
DE102013222079A1 (de) | 2013-10-30 | 2015-04-30 | Schaeffler Technologies Gmbh & Co. Kg | Verteilergetriebe mit einem ersten Differenzial und mit einem zweiten Differenzial |
CN104747679A (zh) * | 2013-12-27 | 2015-07-01 | 陕西汉德车桥有限公司 | 一种具有ngw行星轮的轴间差速器 |
US10408323B2 (en) | 2014-07-16 | 2019-09-10 | Dana Automotive Systems Group, Llc | Drive unit with twin side shaft torque coupling |
US10197144B2 (en) | 2017-01-20 | 2019-02-05 | Dana Heavy Vehicle Systems Group, Llc | Drive unit with torque vectoring and an axle disconnect and reconnect mechanism |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3330169A (en) * | 1965-06-28 | 1967-07-11 | Indus Corp | Differential lock-up mechanism |
US3344688A (en) * | 1965-12-29 | 1967-10-03 | Clark Equipment Co | Limited slip differential |
GB1228752A (de) * | 1965-12-29 | 1971-04-21 | ||
GB1185043A (en) * | 1966-05-07 | 1970-03-18 | Ferguson Res Ltd Harry | Improvements in Couplings for Establising a Driving Connection Between Rotatable Driving and Driven Members |
GB1326537A (en) * | 1969-10-22 | 1973-08-15 | Ferguson Ltd Harry | Vehicle transmissions |
US4290321A (en) * | 1979-06-25 | 1981-09-22 | Wilson Denney R | Variable lock differential |
EP0193160B1 (de) * | 1985-02-25 | 1992-09-16 | Tochigifujisangyo Kabushikikaisha | Leistungsübertragungsvorrichtung |
DE3841234A1 (de) * | 1987-12-08 | 1989-08-03 | Toyota Motor Co Ltd | Sperrdifferential |
IT1227971B (it) * | 1988-11-02 | 1991-05-20 | Carraro Spa | Differenziale autobloccante. |
JPH03529A (ja) * | 1989-05-26 | 1991-01-07 | Iseki & Co Ltd | トラクタの走行伝動装置 |
AT405923B (de) * | 1993-07-08 | 1999-12-27 | Steyr Daimler Puch Ag | Antriebsvorrichtung für ein kraftfahrzeug mit einer ersten und einer zweiten angetriebenen achse |
WO1997042427A1 (fr) * | 1996-05-09 | 1997-11-13 | Ntn Corporation | Embrayage bidirectionnel |
JPH10220556A (ja) * | 1997-02-07 | 1998-08-21 | Zexel:Kk | 差動歯車装置 |
AT4838U1 (de) * | 2000-10-04 | 2001-12-27 | Steyr Daimler Puch Ag | Achsantriebsblock für ein kraftfahrzeug |
US20030171184A1 (en) * | 2002-03-11 | 2003-09-11 | Russell Wige | Dual-input differential planetary gear transmission |
-
2002
- 2002-02-08 AT AT0008002U patent/AT6082U1/de not_active IP Right Cessation
-
2003
- 2003-02-05 CA CA2475541A patent/CA2475541C/en not_active Expired - Fee Related
- 2003-02-05 US US10/503,798 patent/US7083541B2/en not_active Expired - Fee Related
- 2003-02-05 EP EP03706104A patent/EP1474302A1/de not_active Ceased
- 2003-02-05 WO PCT/AT2003/000033 patent/WO2003066362A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO03066362A1 * |
Also Published As
Publication number | Publication date |
---|---|
AT6082U1 (de) | 2003-04-25 |
WO2003066362A1 (de) | 2003-08-14 |
CA2475541A1 (en) | 2003-08-14 |
US7083541B2 (en) | 2006-08-01 |
CA2475541C (en) | 2010-05-18 |
US20050049103A1 (en) | 2005-03-03 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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