WO2012083904A1 - Differenzial - Google Patents
Differenzial Download PDFInfo
- Publication number
- WO2012083904A1 WO2012083904A1 PCT/DE2010/001519 DE2010001519W WO2012083904A1 WO 2012083904 A1 WO2012083904 A1 WO 2012083904A1 DE 2010001519 W DE2010001519 W DE 2010001519W WO 2012083904 A1 WO2012083904 A1 WO 2012083904A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- spokes
- axle
- differential
- connecting element
- Prior art date
Links
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
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
-
- 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
- F16H2048/085—Differential gearings with gears having orbital motion comprising bevel gears characterised by shafts or gear carriers for orbital gears
Definitions
- the invention relates to a differential, with at least one
- Drive wheel with at least two axle wheels, with at least two
- a differential is a special planetary gear which is e.g. when driving a vehicle in a curve compensates for the differently long distance traveled by the two wheels of an axle by the wheels rotate at different speeds.
- a connecting element learns for this purpose from a drive wheel
- the drive wheel is connected to a transmission gear and above it with the actual vehicle engine.
- the connecting element transmits to the two differential gears a torque which is from the predetermined
- the connecting element in the prior art is generally a differential cage in which the
- Axles and the differential gears are arranged and which is connected at the periphery with the drive wheel.
- the applicant's published patent application WO 2010/118727 A1 discloses a novel differential in which the connecting element is arranged in the drive wheel.
- the one-piece connecting element in this case has spokes for the axle and differential gears, which emanate in a star shape from a central region of the connecting element.
- Such a differential thus waives the differential cage, but in particular a one-piece
- the invention is based on the object, such a housing-less
- the drive wheel is designed in the manner of a gear that the drive wheel is designed such that it surrounds an interior at least partially, that the connecting element is at least partially disposed within the interior, that the connecting element is configured in one piece in that the connecting element has at least six spokes which emanate in a star shape from a central region of the connecting element, that the connecting element has at least two axle wheel spokes, around which in each case one of the at least two axle wheels is rotatably arranged, that the at least two axle wheel spokes move along one are arranged on the first imaginary axis of the connecting element, that the connecting element has at least two Ausretesrad spokes about which each one of the at least two differential gears rotatable
- the at least two balance wheel spokes are arranged along a second imaginary axis of the connecting element, wherein the second imaginary axis is substantially perpendicular to the first imaginary axis that the at least two balance wheel spokes are connected to the inner surface of the drive wheel, and that
- Connecting element has at least two fixing spokes, which are connected to the inner surface of the drive wheel.
- the connecting element experiences at least one first torque from the drive wheel and transmits at least one second torque to at least one of the at least two axle wheels.
- the central region of the connecting element in
- Connecting element - eg a one-piece or one-piece forging - connected via four spokes to the drive wheel, eg welded. This reduces the load acting on the connecting element.
- the connecting element has at least six spokes: two axle spokes, two sprocket spokes and two mounting spokes.
- the axle wheels and differential gears are in particular partially engaged with each other.
- the imaginary axis along which the mounting spokes are disposed is preferably substantially perpendicular to the first and second imaginary axes.
- An embodiment of the invention provides that the at least two axle wheels directly - in particular socket-free - have contact with the Achsrad- spokes, and / or that the at least two differential gears directly - in particular bushing - have contact with the sprocket spokes.
- the publication WO 2010/1 18727 A1 are for the axle or
- Balancing wheels each provided sockets. However, it has proven to be advantageous to apply the wheels without sockets directly on the spokes.
- At least one Hinterlage is connected to the inner surface of the drive wheel, and / or that is arranged on the at least two mounting spokes each at least one backing, wherein in each case the at least one backing with of the
- Inner surface of the drive wheel is connected.
- at least four backing layers are thus provided, which with the inner surface of the
- the backing of the differential gears are used, inter alia, the axial support of the differential gears or the adjustment of the teeth clearance between the wheels. Furthermore, as an advantage of the backing results in a stiffening of the differential or the spokes.
- An embodiment of the invention provides that the drive wheel and at least one balance wheel spoke are designed and matched to one another such that at least one cavity results between the balance wheel spoke and the inner surface of the drive wheel.
- Welding can form the weld root in this cavity.
- the cavity is preferably dimensioned such that in a two-sided welding of the spokes to the drive wheel, a contact of the other in the cavity penetrating material, i. the welding roots is avoided.
- the cavity is in each case behind a weld.
- An embodiment of the invention includes that at least one backing has at least one recess, wherein the recess opens onto a region at which the spoke, around which the backing is arranged, meets the inner surface of the drive wheel.
- the backing is thus designed such that it allows welding between the associated spoke and the drive wheel.
- all backs are designed in this way.
- the backings conform to the inner surface of the drive wheel in such a way that also results in an optimum weld for the connection of the backsheets with the drive wheel.
- the backs are curved.
- An embodiment of the invention provides that at least one axle and / or at least one differential gear each having / have at least one bore, wherein the holes / bore open in a region / opens, in which the axle contact with the axle wheel spoke or the balance wheel has contact with the balance wheel spoke.
- the holes are used in particular for oil supply. Oil is an example of a lubricant.
- An embodiment of the invention includes that at least one axle wheel spoke and / or at least one balance wheel spoke at least partially circumferential recesses / has. These indentations, which may be helical or spiral, provide a uniform supply of oil around the spokes.
- An embodiment of the invention provides that at least one housing is provided, that the ends of Achsrad spokes are each arranged in a blind hole of the axle, that the axle wheels protrude partially from the housing, and that the housing substantially oil-tight configured and / or is sealed.
- axle-spokes in blind holes of the axle wheels can also be used for an open housing or without housing.
- An embodiment of the invention includes that the axle wheels are mounted on tapered roller bearings, wherein the tapered roller bearings along the first imaginary axis are at least partially disposed in a region in which the axle wheels have contact with the axle spokes.
- tapered roller bearings which e.g. between the axle wheels and the housing, serves to reduce the forces acting.
- the tapered roller bearings absorb axial forces and ensure the guidance of the axle wheels.
- An embodiment of the invention provides that the at least two axle wheels and the at least two differential gears are configured as bevel gears, or that the at least two axle wheels are configured as crown wheels and the at least two differential gears as spur gears, or that the at least two axle wheels as spur gears and the at least two differential gears are designed as crown wheels.
- An embodiment The invention includes that the drive wheel has a straight, oblique, arrow or double helical teeth.
- An embodiment of the invention includes that at least one of the at least two axle wheels a
- Fig. 2 truncated spatial representation of the differential
- Fig. 3 another section through the differential
- Fig. 4 section through an alternative embodiment of the differential of Fig. 1.
- the section of Fig. 1 is in the housing 2 substantially in the middle of the
- Connecting element 4 is arranged, which in the prior art as
- Differential basket is designed. In the invention, it has the shape of a substantially solid central region 7, from which a total of six spokes emanate. These are two axle spokes 5, two balance spokes 6 and two attachment spokes 17 (see Figures 2 and 3).
- the spokes 5, 6, 17 are designed substantially cylindrical.
- the star-shaped connecting element 4 is connected via the two Ausretesrad- spokes 6 and the two attachment spokes 17 to the drive wheel 1.
- the drive wheel 1 is a gear or a ring gear.
- the drive wheel 1 has, for example, a straight, oblique, Doppelschräg- or arrow toothing. It revolves around the first imaginary axis 11 and transmits one of the torque with which it is itself moved, dependent torque on the rotation of the axle wheels 2, which each rotate about an associated wheel spoke 5, on the - not shown - laterally mounted wheels.
- axle wheels 2 are in this case
- Embodiment designed as bevel gears at the base surfaces in each case a substantially cylindrical unit is attached, which has here on the outer teeth. Furthermore, the axle wheels 2
- the axle wheels 2 can also be designed as crown or spur gears.
- the axle wheels 2 are mounted directly on the axle spokes 5 and have an oil supply through through holes 31, over which oil - as an example of lubricant - in the spaces between axle wheels spokes 5 and axle wheels 2 passes.
- each tapered roller bearings 14 are provided, which provide for an axial support along the first imaginary axis 11.
- the tapered roller bearings 14 are located along the first imaginary axis 11 above the area in which the axle wheels 2 are in contact with the axle spokes 5. Thus, especially the forces acting on the connecting element 4 forces are reduced.
- the housing 12 is also sealed by seals 16 between the axle wheels 2 and the housing 12 oil-tight.
- the arrangement of the axle-spokes 5 in the blind holes of the axle 2 prevents, inter alia, leakage of the oil during disassembly.
- two Ausretesrad spokes 6 are provided for two differential gears 3.
- the axle wheels 2 and the differential gears 3 are configured and arranged in such a way that they mesh with each other.
- the differential gears 3 are also arranged directly on the Ausretesrad- spokes 6 and also have through holes 31.
- the balancing wheel Spokes 6 and the Achsrad spokes 5 each circumferential recesses 32.
- the balance wheel spokes 6 are connected via fixing regions 15, for example by welding or laser welding to the drive wheel 1.
- the backing sheets 10, which are mounted behind the differential gears 3, have corresponding passages, so that the
- a substantially continuous cavity 30 is provided, which from -. circumferential grooves in the drive wheel 1 and the sprocket spokes 6 is formed. In these, material of the weld root during and as a result of
- the four backing layers 10 are adapted in their contour of the inner surface of the drive wheel 1 in order to ensure the best possible connection, e.g. to allow by welding. Furthermore, the connecting element 4 via two fastening spokes 17 with the
- Balancing wheels 3 still thrust washers 40 are provided, which provide for favorable sliding conditions between the wheels 2, 3 and the rear layers 10 arranged behind it.
- Backings 10 are each rounded to match the round inner contour of the drive wheel 1.
- the central area 7 of e.g., by means of cold forming integrally produced connecting element 4 is, for example, spherical or deviates from the spherical shape.
- the bores in the axle wheels 2 or in the differential gears 3 are configured in such a way that several, at least two support points result for the respective spokes 5 and 6 when tilting. This can e.g. be achieved in that the through holes do not have a straight course, but a corrugation.
- FIG. 4 shows an alternative variant of the differential of FIG. 1.
- an O-arrangement is provided for the tapered roller bearing 14, whereby the pressure points are outside the differential. This is advantageous in terms of the resulting tilting moments, since in the O-arrangement, the tapered roller bearings 14 can accommodate a relatively large overturning moment even at relatively small bearing center distance.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10808982.2A EP2655936A1 (de) | 2010-12-23 | 2010-12-23 | Differenzial |
BR112013018331A BR112013018331A2 (pt) | 2010-12-23 | 2010-12-23 | diferencial |
PCT/DE2010/001519 WO2012083904A1 (de) | 2010-12-23 | 2010-12-23 | Differenzial |
US13/923,439 US20130281252A1 (en) | 2010-12-23 | 2013-06-21 | Differential Gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2010/001519 WO2012083904A1 (de) | 2010-12-23 | 2010-12-23 | Differenzial |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/923,439 Continuation US20130281252A1 (en) | 2010-12-23 | 2013-06-21 | Differential Gear |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012083904A1 true WO2012083904A1 (de) | 2012-06-28 |
Family
ID=43904601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2010/001519 WO2012083904A1 (de) | 2010-12-23 | 2010-12-23 | Differenzial |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130281252A1 (de) |
EP (1) | EP2655936A1 (de) |
BR (1) | BR112013018331A2 (de) |
WO (1) | WO2012083904A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016102568A (ja) * | 2014-11-28 | 2016-06-02 | 武蔵精密工業株式会社 | 差動装置及びその製造方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004016178U1 (de) * | 2003-10-20 | 2005-02-24 | Gkn Driveline International Gmbh | Differentialachsenkreuz für ein Ausgleichsgetriebe |
DE102010013510A1 (de) * | 2009-04-17 | 2010-10-21 | Neumayer Tekfor Holding Gmbh | Differenzial |
-
2010
- 2010-12-23 WO PCT/DE2010/001519 patent/WO2012083904A1/de active Application Filing
- 2010-12-23 EP EP10808982.2A patent/EP2655936A1/de not_active Withdrawn
- 2010-12-23 BR BR112013018331A patent/BR112013018331A2/pt not_active Application Discontinuation
-
2013
- 2013-06-21 US US13/923,439 patent/US20130281252A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004016178U1 (de) * | 2003-10-20 | 2005-02-24 | Gkn Driveline International Gmbh | Differentialachsenkreuz für ein Ausgleichsgetriebe |
DE102010013510A1 (de) * | 2009-04-17 | 2010-10-21 | Neumayer Tekfor Holding Gmbh | Differenzial |
WO2010118727A1 (de) | 2009-04-17 | 2010-10-21 | Neumayer Tekfor Holding Gmbh | Differenzial |
Also Published As
Publication number | Publication date |
---|---|
BR112013018331A2 (pt) | 2018-09-04 |
US20130281252A1 (en) | 2013-10-24 |
EP2655936A1 (de) | 2013-10-30 |
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