EP3935290A1 - Differentialgetriebe eines kraftfahrzeugs - Google Patents
Differentialgetriebe eines kraftfahrzeugsInfo
- Publication number
- EP3935290A1 EP3935290A1 EP20711523.9A EP20711523A EP3935290A1 EP 3935290 A1 EP3935290 A1 EP 3935290A1 EP 20711523 A EP20711523 A EP 20711523A EP 3935290 A1 EP3935290 A1 EP 3935290A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- differential
- cylinder
- ring
- housing
- drive shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000009434 installation Methods 0.000 description 4
- 241000446313 Lamella Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/32—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using fluid pressure actuators
-
- 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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/22—Arrangements for suppressing or influencing the differential action, e.g. locking devices using friction clutches or brakes
-
- 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
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
Definitions
- the invention relates to a differential gear of a motor vehicle with a ring gear and a differential housing connected to it, with differential bevel gears arranged on compensating bolts, the compensating bolts being connected to the compensating housing, with a first bevel gear that is rotatably arranged on a first drive shaft and one Second bevel gear, which is arranged in a rotationally fixed manner on a second drive shaft, with a first disk pack, which is disposed axially to the first drive shaft between the crown wheel and the first bevel gear, and a second disk pack, which is disposed axially to the second drive shaft between the crown gear and the differential housing.
- a basic locking torque occurs at higher differential speeds between the two drive shafts by pressing the two disk packs together.
- the object of the invention is therefore to create a differential gear of a motor vehicle of the type mentioned at the outset, which can also be operated externally with little component and space requirement.
- this object is achieved in that one or both disk packs can be acted upon by a switchable actuating device against the bevel gear assigned to the respective disk pack.
- One disk pack, but preferably both disk packs, of the differential gear is used simultaneously for an externally actuated lock.
- a third lamella package is dispensed with, so that there is a significant reduction in the number of components and installation space required.
- the actuation device can be actuated by any suitable application of force to the disk set or sets.
- the actuating device is a hydraulic actuating device.
- a cylinder coaxial with the respective drive shaft can be formed in a simple design in the ring gear and / or in the compensating housing or a component permanently connected to it, which cylinder has an opening facing the lamella packet assigned to it, a piston being displaceably arranged in the cylinder and wherein the cylinder on the side of the piston facing away from the disk pack can be acted upon by hydraulic pressure and the piston with its side facing the disk pack can be acted upon by force against the disk pack.
- the cylinder can be an annular cylinder and the piston can be an annular piston.
- a first pressure line can lead from a switchable pressure source to the cylinder or ring cylinder on the side of the piston facing away from the disk pack.
- One or more second pressure lines can connect the cylinder or ring cylinder assigned to the one disk set with the cylinder or ring cylinder assigned to the other disk set.
- the one or more second pressure lines are arranged in the differential housing, the required installation space is further reduced.
- two second pressure lines can be arranged diametrically opposite each other in the equalizing housing.
- the assembly is simplified even further if the second pressure lines have plug connections at their ends, which can be inserted into corresponding connection openings formed in the compensating housing or the ring gear and leading to the cylinders or ring cylinders.
- Figure 1 is a longitudinal section of a differential gear
- Figure 2 shows a partial longitudinal section of the right side of the differential gear
- Figure 3 shows a partial longitudinal section of the left side of the differential gear
- FIG. 4 shows a longitudinal section of a differential housing of the differential gear according to FIG. 1
- FIG. 5 shows a pressure line of the differential gear according to FIG. 1
- FIG. 6 shows two perspective front views of the differential housing of the differential gear according to FIG. 1
- FIG. 7 shows a detail view of the left side of the differential gear according to FIG. 3 with an enlarged representation of one end of the pressure line according to FIG. 5 with a securing element
- FIG. 8 shows a detail of the left side of the differential gear according to FIG. 1 in longitudinal section with a perspective representation of components
- FIG. 9 shows a section of the right side of the differential gear according to FIG.
- FIG. 10 shows a perspective illustration of a closure cover of the differential gear according to FIG. 1
- FIG. 11 shows a perspective illustration of differential covers of the differential gear according to FIG. 1.
- the self-locking differential gear shown in the figures of a motor vehicle has a ring gear 1 which is rotatably driven about an axis of rotation 3 via a drive pinion 2 from a drive engine of a motor vehicle, not shown.
- a pot-like differential housing 4 is firmly connected to the ring gear 1.
- the opening of the pot-like compensating housing 4 is closed by a closure cover 6 which is firmly connected to the compensating housing 4.
- differential housing 4 and differential cover 6 The structural unit of differential housing 4 and differential cover 6 is rotatably supported by roller bearings 5 in axial openings of differential covers 7, the differential cover 7 in turn being fixedly arranged in an axle bridge 8.
- two drive shafts 9 and 10 are arranged, which each drive wheels of the motor vehicle, not shown.
- On the first th drive shaft 9 is a first bevel gear 11 and on the second drive shaft 10 a second bevel gear 12 is fixed.
- a transverse to the axis of rotation extending compensation bolt 13 protrudes with its En in the corresponding recesses of the differential housing 4 and is taken fastened there.
- a first compensating bevel gear 14 and a second compensating bevel gear 15 are arranged on the compensating pin 13.
- a ring-like first plate pack 16 is arranged on the side of the closure cover 6, which is supported with its one side via a first plate-like ring 18 on a first annular piston 19, the first annular piston 19 in one in the closure cover 6 formed first ring cylinder 20 is axially guided.
- the first disk pack 16 With its side facing away from the closure cover 6, the first disk pack 16 is in contact with a first contact surface 17 of the first bevel gear 11.
- a ring-like second disk pack 21 is arranged, which is supported with its one side via a second plate-like ring 22 on a second ring piston 23, the second ring piston 23 in an im Bottom of the differential housing 4 formed second ring cylinder 24 is axially guided.
- the second disk pack 21 With its side facing the closure cover 6, the second disk pack 21 is in contact with a second contact surface 25 of the second bevel gear 12.
- the disk packs 16 and 21 consist of alternately next to each other angeord designated inner lamellae and outer lamellae, the inner lamellae being connected to the bevel gears 11 and 12 via egg ne support teeth, while the outer lamellae are supported in the differential housing 4.
- a pressure connection 26 is formed, from which a first pressure line 27 leads on the side of the first annular piston 19 facing away from the first disk pack 16 into the first annular cylinder 20.
- a second pressure line 28 leads from the first ring cylinder 20 to the side of the second ring piston 23 facing away from the second disk pack 21 in the second ring cylinder 24.
- a first cage 29 is arranged between the first annular piston 19 and the first plate-like ring 18, and a second cage 30 is arranged between the second annular piston 23 and the second plate-like ring 22. These cages 29 and 30 hold the first plate-like ring 18 and the second plate-like ring 22 in their position (see FIG. 9).
- FIGS. 4 to 6 show, two diametrically opposite grooves 31, which are open towards the interior of the equalizing housing 4 and in which two second pressure lines 28 are arranged, are formed in the inner wall of the equalizing housing 4.
- FIG. 7 shows a detail view of the left side of the differential gear according to FIG. 3 with an enlarged representation of one end of the second pressure line 28 according to FIG. 5 with a securing element.
- the end of the second pressure line 28 is inserted into a bore 33 opening into the second ring cylinder and has a radially circumferential securing groove 34.
- the securing element consists of a securing bolt 32 which can be guided into a transverse bore 35 tangential to the bore 33 such that the securing bolt 32 engages in the securing groove 34 and holds the end of the second pressure line 28 in its installed position.
- a securing bolt 32 which can be guided into a transverse bore 35 tangential to the bore 33 such that the securing bolt 32 engages in the securing groove 34 and holds the end of the second pressure line 28 in its installed position.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Retarders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019203015.7A DE102019203015A1 (de) | 2019-03-06 | 2019-03-06 | Differentialgetriebe eines Kraftfahrzeugs |
| PCT/EP2020/055673 WO2020178324A1 (de) | 2019-03-06 | 2020-03-04 | Differentialgetriebe eines kraftfahrzeugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3935290A1 true EP3935290A1 (de) | 2022-01-12 |
Family
ID=69844790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20711523.9A Withdrawn EP3935290A1 (de) | 2019-03-06 | 2020-03-04 | Differentialgetriebe eines kraftfahrzeugs |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11746872B2 (de) |
| EP (1) | EP3935290A1 (de) |
| CN (1) | CN113508249B (de) |
| DE (1) | DE102019203015A1 (de) |
| WO (1) | WO2020178324A1 (de) |
Family Cites Families (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3229550A (en) * | 1962-02-02 | 1966-01-18 | Claude H Nickell | Variable hydraulically and mechanically locking differential |
| DE2164324C2 (de) * | 1971-12-23 | 1984-08-16 | Daimler-Benz Ag, 7000 Stuttgart | Steuervorrichtung für ein sperrbares Ausgleichsgetriebe für Fahrzeuge |
| US3987689A (en) * | 1974-12-23 | 1976-10-26 | Borg-Warner Corporation | Speed-sensitive differential mechanism |
| DE3313283A1 (de) * | 1983-04-13 | 1984-10-25 | Daimler-Benz Ag, 7000 Stuttgart | Sperrdifferential mit einer in einem differentialgetriebegehaeuse angeordneten sperrkupplung, die von einem in einem achsgehaeuse angeordneten aeusseren stellglied der axialkolben-zylinder-bauart betaetigt wird |
| JPS60256644A (ja) * | 1984-05-31 | 1985-12-18 | Mitsubishi Motors Corp | 車両用可変式差動制限装置付差動装置 |
| US4679463A (en) * | 1984-08-31 | 1987-07-14 | Nissan Motor Co., Ltd. | Limited slip differential |
| JPS6159044A (ja) * | 1984-08-31 | 1986-03-26 | Nissan Motor Co Ltd | 差動制限装置 |
| JPS62110529A (ja) * | 1985-11-08 | 1987-05-21 | Nissan Motor Co Ltd | 車両用差動制限制御装置 |
| DE3642503A1 (de) * | 1986-12-12 | 1988-06-23 | Bayerische Motoren Werke Ag | Sperrbares ausgleichsgetriebe |
| JP2623905B2 (ja) * | 1990-04-20 | 1997-06-25 | 日産自動車株式会社 | 車両用駆動系クラッチ制御装置 |
| US5019021A (en) * | 1990-07-02 | 1991-05-28 | Eaton Corporation | Modulating limited slip differential |
| JP2867719B2 (ja) * | 1991-02-06 | 1999-03-10 | 日産自動車株式会社 | 電子制御差動制限装置 |
| IT1256136B (it) * | 1992-09-09 | 1995-11-29 | Sistema di bloccaggio differenziale per assale motore sterzante | |
| US5595214A (en) * | 1993-02-10 | 1997-01-21 | Asha Corporation | Hydraulic coupling for vehicle drivetrain |
| JPH08145145A (ja) * | 1994-11-24 | 1996-06-04 | Toyota Motor Corp | 差動制限装置 |
| US5531653A (en) * | 1995-01-13 | 1996-07-02 | Dana Corporation | Selectively lockable differential assembly |
| AT404868B (de) * | 1995-05-16 | 1999-03-25 | Steyr Daimler Puch Ag | Achsdifferential mit sperrkupplungen |
| JP3742130B2 (ja) * | 1995-08-15 | 2006-02-01 | Gkn ドライブライン トルクテクノロジー株式会社 | ディファレンシャル装置 |
| AT3257U1 (de) * | 1998-11-20 | 1999-12-27 | Steyr Daimler Puch Ag | Antriebseinheit für den antrieb eines allradfahrzeuges mit drehzahldifferenzabhängiger hydraulischer kupplung |
| US6488606B1 (en) * | 2001-01-16 | 2002-12-03 | Spicer Technology, Inc. | Limited slip differential with self contained oil supply |
| JP4313828B2 (ja) * | 2007-05-31 | 2009-08-12 | 三菱自動車工業株式会社 | 左右駆動力配分装置 |
| DE102008000449B4 (de) * | 2008-02-29 | 2018-08-30 | Zf Friedrichshafen Ag | Differentialgetriebe eines Kraftfahrzeuges |
| DE102008000444A1 (de) * | 2008-02-29 | 2009-09-03 | Zf Friedrichshafen Ag | Ausgleichsgetriebe eines Kraftfahrzeuges |
| JP5498707B2 (ja) * | 2009-02-16 | 2014-05-21 | 株式会社Kcm | 複合式差動制限装置 |
| CN101994812B (zh) * | 2009-08-11 | 2015-08-05 | 洪涛 | 有限差速比差速器 |
| DE102011003221A1 (de) * | 2011-01-27 | 2012-08-02 | Zf Friedrichshafen Ag | Differential einer angetriebenen Fahrzeugachse, welches über einen Kegelantrieb mit einem Antriebsritzel und ein Tellerrad angetrieben ist |
| US8460149B1 (en) * | 2013-01-25 | 2013-06-11 | American Axle & Manufacturing, Inc. | Differential bearing system for a power transmitting component and method for assembling a power transmitting component |
| CN105358356B (zh) * | 2013-05-14 | 2019-03-15 | Gkn动力传动系统北美有限公司 | 车辆差速器断开组件 |
| FR3010007B1 (fr) * | 2013-09-03 | 2016-12-30 | Poclain Hydraulics Ind | Vehicule comprenant une transmission hydrostatique comprenant un embrayage realisant une fonction de differentiel |
| GB2521594B (en) * | 2013-11-26 | 2019-11-13 | Ford Global Tech Llc | A combined coupling and differential assembly |
| CN105697712B (zh) * | 2016-03-07 | 2018-10-30 | 第一拖拉机股份有限公司 | 带有液压差速锁的拖拉机用差速器装置 |
| US10119579B2 (en) * | 2016-04-04 | 2018-11-06 | Christianson Systems, Inc. | Cassette driver for a freewheel hub |
| CN206874778U (zh) * | 2017-07-18 | 2018-01-12 | 雷沃重工股份有限公司 | 一种新型拖拉机湿式差速锁结构及拖拉机 |
-
2019
- 2019-03-06 DE DE102019203015.7A patent/DE102019203015A1/de active Pending
-
2020
- 2020-03-04 EP EP20711523.9A patent/EP3935290A1/de not_active Withdrawn
- 2020-03-04 CN CN202080018427.8A patent/CN113508249B/zh active Active
- 2020-03-04 WO PCT/EP2020/055673 patent/WO2020178324A1/de not_active Ceased
- 2020-03-04 US US17/436,108 patent/US11746872B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113508249B (zh) | 2025-06-27 |
| US11746872B2 (en) | 2023-09-05 |
| DE102019203015A1 (de) | 2020-09-10 |
| WO2020178324A1 (de) | 2020-09-10 |
| CN113508249A (zh) | 2021-10-15 |
| US20220186819A1 (en) | 2022-06-16 |
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Legal Events
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