WO1999002894A1 - Anlaufscheibenverbund - Google Patents
Anlaufscheibenverbund Download PDFInfo
- Publication number
- WO1999002894A1 WO1999002894A1 PCT/EP1998/004143 EP9804143W WO9902894A1 WO 1999002894 A1 WO1999002894 A1 WO 1999002894A1 EP 9804143 W EP9804143 W EP 9804143W WO 9902894 A1 WO9902894 A1 WO 9902894A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thrust washers
- thrust
- compound
- bevel gears
- plastic
- 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
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
-
- 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
-
- 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
- F16H48/38—Constructional details
- F16H2048/387—Shields or washers
-
- 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
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H2057/085—Bearings for orbital gears
Definitions
- the invention relates to a combination of in particular spherical cap-shaped thrust washers, which are arranged between the differential housing and the bevel gears of a differential gear, several, preferably four thrust washers being connected to one another by webs to form a structural unit.
- Such a thrust washer assembly is known, for example, from German patent 24 54 067.
- the bevel gears are generally mounted on the inner contour of the housing by means of thrust washers which are intended to prevent the wheels from starting on the housing wall and the wear which occurs in the process.
- the thrust washers are preferably made of a particularly wear-resistant plastic, for example a 6.6 polyamide.
- thrust washers The well-known combination of thrust washers has proven to be very reliable. In individual cases, however, malfunctions have resulted in the thrust washers being overheated or mechanically destroyed in the area in which they are in contact with the back wall of the bevel gear.
- the object of the present invention is to develop a known thrust washer assembly in such a way that it is secured against mechanical or thermal overload during operation.
- this object is achieved in that the surface facing the bevel gears has at least one starting Disc has recesses and / or recesses.
- the bevel gears of the differential run in an oil bath so that the depressions and / or recesses in the thrust washer enable the oil to be transported into the contact area of the thrust washer. In this way, the cooling of the thrust washer is promoted during operation.
- the depressions and / or recesses in the thrust washer preferably run at an angle to the radial direction of the thrust washer. Due to this oblique course, the depressions or recesses have an extent in the circumferential direction.
- the oil is conveyed through the recess or the recess by the rotational movement of the bevel gears.
- the thrust washer assembly according to the invention is preferably produced from a thermally highly resistant plastic. Compared to the previously used polyamide 6.6, for example, a polyamide 4.6 shows increased thermal resistance.
- a polyphthalamide (PPA) is also particularly suitable for producing the thrust washer assembly according to the invention.
- the object according to the invention is achieved in that at least one thrust washer in an annular area which extends from the inner diameter of the thrust washer to at least one of the outer diameter of the area of the bevel gear lying against the thrust washer appropriate diameter is sufficient, consists of a material with increased thermal and / or mechanical strength.
- the probability of failure can also be reduced by increasing the strength of the thrust washer in the contact area.
- This measure is particularly useful in the case of thrust washers for the drive bevel gears that are connected to the drive shafts and are subjected to high thermal and mechanical loads. The forces acting on the wheels and the axles are at least partially transmitted to the drive bevel gears, so that other dynamic forces act on the drive bevel gears in addition to the pure driving force of the motor, which additionally load the thrust washers.
- all thrust washers in the ring area in which there is contact with the bevel gears are produced with increased strength. _> -
- the increased mechanical strength can be achieved, for example, by incorporating fillers such as carbon fibers or glass fibers. It is also possible to insert a mat-like reinforcing fabric in the ring area to be reinforced.
- the thrust washers in the contact area with the bevel gears can be made of metal or ceramic and encased in a plastic that forms the connecting webs that firmly connect the thrust washers to one another.
- This plastic can be injection molded onto the ring area of the thrust washers, which is to be inserted into the injection mold prior to manufacture.
- FIG. 1 shows a longitudinal section through a differential gear, in which a thrust washer assembly according to the invention is arranged between the housing and the bevel gears
- FIG. 2 shows a plan view of the thrust washer assembly in a developed state
- FIG. 3 is a sectional view along the section line III-III of a thrust washer for a differential bevel gear
- FIG. 4 shows a detailed illustration of an oil guide channel in a thrust washer for a drive bevel gear cut according to section line IV-IV
- FIG. 5 shows an alternative embodiment of the thrust washer assembly according to the invention in a representation corresponding to FIG. 2 and
- Fig. 6 shows a further alternative embodiment of the invention
- Thrust washer composite in a representation corresponding to FIG. 2.
- a differential differential gear for the axle drive of the front wheels of a motor vehicle is shown.
- two drive bevel gears 2 and two differential bevel gears 3 are each arranged diametrically opposite one another.
- the drive bevel gears 2 are non-rotatably attached to the ends of the two drive shafts 4, 5.
- the smaller differential bevel gears 3 are mounted on a common differential bevel gear axis 6 inserted through the differential housing.
- the thrust washer assembly 7 according to the invention is arranged between the outer, spherical-shell-shaped surfaces of the bevel gears and the spherical-shell-shaped inside of the differential housing.
- pane assembly 7 a development of the start-up of pane assembly 7 is shown.
- the large thrust washers 8 for the drive bevel gears 2 and the small thrust washers 9 for the differential bevel gears 3 are connected to one another by connecting webs 10.
- the entire thrust washer assembly is made of injection molded plastic, preferably polyamide 4.6 or polyphthalamide. All of its components, namely the large thrust washers 8, the small thrust washers 9 and the connecting webs 10 lie in the relaxed state essentially on a common spherical cap-shaped surface.
- the large thrust washers 8 for the drive bevel gears 2 are provided with depressions 11 which run in the form of a groove from the inner diameter to the outer diameter of the large thrust washer 8.
- the grooves formed by the depressions 11 run on the inside of the large thrust washer 8 shown in FIG. 2, which bears against the bevel gears, at an angle to its radial direction.
- the grooves enable the oil in the differential housing 1 to be transported along the contact surface between the thrust washer 8 and the drive bevel gear 2. Due to the oblique course of the grooves 11, the oil particles are entrained in the circumferential direction by the drive bevel gears 2 rotating relative to the large thrust washers 8 and through the Grooves 11 transported through.
- the oil transport increases the cooling between the contact surfaces of the drive bevel gears 2 and the large thrust washers 8 and thus reduces the risk of the large thrust washer being damaged by overheating.
- the small thrust washers 9 for the differential bevel gears 3 are provided with window-shaped recesses 12 which protrude through the entire material of the thrust washers 9.
- the recesses 12 also promote the transport of coolant into the area between the bevel gears 2 and differential housing 1 and additionally reduce the contact area between the thrust washer 9 and the differential bevel gear 3 the generation of frictional heat is reduced.
- the cutouts 12 do not necessarily have to be rectangular, but can also take on round or oval shapes.
- the cutouts can be combined with groove-like depressions, so that the oil is transported from the cutouts to the wheels of the thrust washers.
- FIGS. 5 and 6 Two alternative embodiments are shown in FIGS. 5 and 6. These figures each show a development of a spherical cap-shaped thrust washer assembly.
- the inner ring region 13 can be seen in each case, which extends from the inner diameter of each thrust washer 8', 9 'to an outer radius which at least up to the outer radius of the thrust washer 8', 9 'adjacent area of the bevel gear is sufficient.
- the ring regions 13 shown in FIG. 5 are reinforced by reinforcing fibers embedded in the plastic material, for example glass fibers or carbon fibers.
- FIG. 6 shows a thrust washer assembly 7 ′′ in which the spherical cap-shaped thrust washers 8 ′′, 9 ′′ in the ring region 13 ′ in which they contact the
- the steel or ceramic ring elements are placed in an injection mold and overmolded on their outer circumference with a plastic compound in the injection molding process, which forms the connecting webs 10.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98940140A EP0995058A2 (de) | 1997-07-12 | 1998-07-04 | Anlaufscheibenverbund |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997130004 DE19730004A1 (de) | 1997-07-12 | 1997-07-12 | Anlaufscheibenverbund |
DE19730004.9 | 1997-07-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999002894A1 true WO1999002894A1 (de) | 1999-01-21 |
WO1999002894B1 WO1999002894B1 (de) | 1999-03-04 |
Family
ID=7835573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/004143 WO1999002894A1 (de) | 1997-07-12 | 1998-07-04 | Anlaufscheibenverbund |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0995058A2 (de) |
DE (1) | DE19730004A1 (de) |
WO (1) | WO1999002894A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3142232A1 (fr) * | 2022-11-22 | 2024-05-24 | Renault | Différentiel avec butée d’axe satellite |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19954636A1 (de) * | 1999-11-13 | 2001-05-17 | Zahnradfabrik Friedrichshafen | Planetengetriebe |
DE10009961A1 (de) * | 2000-03-02 | 2001-09-06 | Volkswagen Ag | Ausgleichsgetriebe mit Anlaufscheiben |
DE10014875B4 (de) * | 2000-03-24 | 2010-04-22 | Volkswagen Ag | Ausgleichsgetriebe mit einem Anlaufscheibenverbund und Verfahren zur Herstellung eines Anlaufverbundes |
DE10107264A1 (de) * | 2001-02-16 | 2002-08-22 | Volkswagen Ag | Ausgleichsgetriebe mit einer Schmiervorrichtung |
US6645113B2 (en) * | 2001-09-28 | 2003-11-11 | Visteon Global Technologies, Inc. | Differential gear retention system |
FR2864189B1 (fr) * | 2003-12-23 | 2007-01-26 | Renault Sas | Differentiel avec element de friction decouvrant partiellement la pignonerie |
DE202004006818U1 (de) * | 2004-04-28 | 2005-09-08 | Ab Skf | Lagerbüchse zur drehbaren Lagerung eines Zapfens |
FR3001271B1 (fr) * | 2013-01-22 | 2015-03-06 | Renault Sa | "differentiel de transmission, notamment pour vehicule automobile" |
FR3001270A3 (fr) * | 2013-01-22 | 2014-07-25 | Renault Sa | "differentiel de transmission comportant des moyens de friction perfectionnes" |
FR3007484A3 (fr) * | 2013-06-25 | 2014-12-26 | Renault Sa | "differentiel de transmission comportant des demi-coquilles de friction" |
FR3019250B1 (fr) * | 2014-03-28 | 2016-07-08 | Renault Sa | Element et ensemble de friction pour differentiel spherique |
JP2018053965A (ja) | 2016-09-27 | 2018-04-05 | 武蔵精密工業株式会社 | ワッシャーおよび差動装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2454067A1 (de) | 1974-11-14 | 1976-05-20 | Volkswagenwerk Ag | Lageranordnung fuer mit umlaufenden zahnraedern versehene achsen oder wellen in einem gehaeuse eines ausgleichgetriebes |
US4084450A (en) * | 1976-09-27 | 1978-04-18 | Caterpillar Tractor Co. | Thrust washer arrangement for differentials |
US5233757A (en) * | 1992-10-19 | 1993-08-10 | General Motors Corporation | Method of assembling a motor vehicle differential |
WO1995028267A1 (en) * | 1994-04-15 | 1995-10-26 | Dana Corporation | A polymeric based composite bearing |
DE4430474C1 (de) * | 1994-08-27 | 1996-03-28 | Glyco Metall Werke | Gleitlagerwerkstoff und dessen Verwendung zur Herstellung eines Verbundschichtwerkstoffes |
-
1997
- 1997-07-12 DE DE1997130004 patent/DE19730004A1/de not_active Withdrawn
-
1998
- 1998-07-04 WO PCT/EP1998/004143 patent/WO1999002894A1/de not_active Application Discontinuation
- 1998-07-04 EP EP98940140A patent/EP0995058A2/de not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2454067A1 (de) | 1974-11-14 | 1976-05-20 | Volkswagenwerk Ag | Lageranordnung fuer mit umlaufenden zahnraedern versehene achsen oder wellen in einem gehaeuse eines ausgleichgetriebes |
US4084450A (en) * | 1976-09-27 | 1978-04-18 | Caterpillar Tractor Co. | Thrust washer arrangement for differentials |
US5233757A (en) * | 1992-10-19 | 1993-08-10 | General Motors Corporation | Method of assembling a motor vehicle differential |
WO1995028267A1 (en) * | 1994-04-15 | 1995-10-26 | Dana Corporation | A polymeric based composite bearing |
DE4430474C1 (de) * | 1994-08-27 | 1996-03-28 | Glyco Metall Werke | Gleitlagerwerkstoff und dessen Verwendung zur Herstellung eines Verbundschichtwerkstoffes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3142232A1 (fr) * | 2022-11-22 | 2024-05-24 | Renault | Différentiel avec butée d’axe satellite |
Also Published As
Publication number | Publication date |
---|---|
DE19730004A1 (de) | 1999-01-14 |
EP0995058A2 (de) | 2000-04-26 |
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