WO2016207635A1 - Ensemble d'engrenages de différentiel et procédé d'assemblage - Google Patents

Ensemble d'engrenages de différentiel et procédé d'assemblage Download PDF

Info

Publication number
WO2016207635A1
WO2016207635A1 PCT/GB2016/051877 GB2016051877W WO2016207635A1 WO 2016207635 A1 WO2016207635 A1 WO 2016207635A1 GB 2016051877 W GB2016051877 W GB 2016051877W WO 2016207635 A1 WO2016207635 A1 WO 2016207635A1
Authority
WO
WIPO (PCT)
Prior art keywords
crown wheel
casing
wheel assembly
side gear
differential
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
Application number
PCT/GB2016/051877
Other languages
English (en)
Inventor
Tobiasz Lewis JACKMAN
Jonathan Philip HODGSON
Robert William Mark ROBINSON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricardo UK Ltd
Original Assignee
Ricardo UK Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricardo UK Ltd filed Critical Ricardo UK Ltd
Publication of WO2016207635A1 publication Critical patent/WO2016207635A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16H48/38—Constructional details
    • 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
    • F16H48/38—Constructional details
    • F16H48/40—Constructional details characterised by features of the rotating cases
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/032—Gearboxes; Mounting gearing therein characterised by the materials used
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/037—Gearboxes for accommodating differential gearings
    • 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
    • F16H2048/382—Methods for manufacturing differential gearings
    • 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
    • F16H2048/385—Constructional details of the ring or crown gear
    • 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
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H48/40—Constructional details characterised by features of the rotating cases
    • F16H2048/405—Constructional details characterised by features of the rotating cases characterised by features of the bearing of the rotating case
    • 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
    • F16H48/42—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon
    • F16H2048/423—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon characterised by bearing arrangement
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F16H2057/0235—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly specially adapted to allow easy accessibility and repair

Definitions

  • a method of assembling a differential comprising the steps of:
  • the differential comprises an output drive shaft
  • the method further comprises:
  • the differential may further comprise a crown wheel bearing, arranged to rotatably support the crown wheel within the casing, the crown wheel bearing having an outer radius which is greater than the inner radius of the crown gear.
  • a radius corresponding to a centreline of rolling elements of the crown wheel bearing may be greater than the inner radius of the crown gear teeth.
  • the crown wheel assembly may be radially supported by a single crown wheel bearing.
  • the side gears may be axially retained in position in the casing via the crown wheel bearing.
  • the crown wheel bearing may be substantially located at a radial position relative to the rotational axis of the crown wheel between the inner and outer radii of the crown gear teeth.
  • the differential casing comprises two split lines, to divide the differential casing into the two parts.
  • first and second side gears arranged to engage the pinion gears, such that drive input to the pinion gear is transferred to the side gears via the pinion gears; and a crown wheel bearing, arranged to rotatably support the crown wheel within the casing, the crown wheel bearing having an outer radius which is greater than the inner radius of the crown wheel.
  • the differential casing comprises two split lines, to divide the differential casing into the two parts.
  • the differential comprises an output drive shaft, and a seal located between the casing and an outer surface of the output drive shaft.
  • the differential casing may be formed from two parts, attached to one another to define the casing.
  • the differential casing comprises two split lines, to divide the differential casing into the two parts.
  • the sheath is a flexible boot.
  • Figure 1 shows a cross-sectional view of a differential according to an embodiment of the invention
  • Figure 5A shows a cross-section through a crown wheel assembly engaged with side gears according to an embodiment of the invention
  • Figure 5B shows an alternative embodiment of a side gear assembly suitable for the differential of the invention
  • Side gear members 150 and 160 carry arrays of side gear teeth 151 and 161, which engage teeth of pinion gears 121 and 122, along with any other pinion gears which may be included in the assembly but which are not shown in Figure 1, as will be apparent from the later Figures.
  • the side gear members also comprise respective cavities 152 and 162, into which output shafts can be received to deliver drive from the differential to those of output shafts.
  • a shaft 140 is provided and extends from first side gear member 150 to second side gear member 160. The function of the shaft is to retain the side gear members axially towards the pinion gears 121 and 122 to ensure engagement of the side gear teeth 151 and 161 with the pinion gears 121 and 122.
  • the threaded nut engages with a corresponding threaded portion 103 of the crown wheel.
  • Rotation of the threaded nut 410 can therefore vary a degree of compression applied to the inner race 181 of the crown wheel bearing 180. This provides a degree of adjustability to a preload applied to the inner race of the bearing 180.
  • the retaining members 401, 402, 403, 404 may provide a dual function of retaining the pinion mount 1100 within the crown wheel 102 and also retaining a preload on the crown wheel bearing 180.
  • Figure 4b shows a cross-section through the assembly of Figure 4a to more clearly illustrate the numbered features described in relation to Figure 4a.
  • Figure 6 shows an exploded sub -assembly of side gear members with the connecting shaft 140 of an embodiment of the invention.
  • a seal 155 as shown in Figure 1 may be located on a seal-receiving surface 716 of the side gear member 150.
  • a corresponding seal may be provided for location in a similar manner on side gear member 160 at seal receiving surface 718.
  • the shaft 140 is retained within side gear member 150 as illustrated in Figure 5.
  • the shaft may have a shoulder 701 for engaging the periphery of an opening 159 of the side gear member 150.
  • the shaft 140 may alternatively be integrally formed as part of side gear member 150.
  • the shaft is retained in side gear member 160.
  • Shaft fixing means may be provided in the form of a nut or other threaded member 706.
  • the engagement projections provided on the output shafts may be spherical or at least substantially part- spherical to enable the output shaft to rotate with the side gear member to which it is connected while its axis of rotation is non-parallel to the axis of rotation of the side gear member 150.
  • the radial support of the side gear members described herein is generally stiffer than known differential mechanisms. This is due to the way in which the radial bearings are provided in the illustrated locations, while axial forces are dealt with via the crown wheel bearing as described earlier.
  • the axial location of the side gears is determined only based upon their location relative to the crown wheel assembly and axial location of all rotating components of the differential is therefore set by the location of the crown wheel. This effect, combined with the reduction in overall mass of the assembly due to the configurations described, leads to a reduction in unwanted noise and vibration emitted by the mechanism in use.
  • the non-structural housing components may be formed from different materials, preferably less dense materials, than the structural casing.
  • the structural casing 90 provides location and support for the mechanisms of the differential and reacts substantially all significant loads produced in the differential mechanism and side gears during use.
  • the cavity 95 provides an internal volume with an internal surface to which the differential mechanism can be mounted.
  • the casing also includes at least one aperture sufficiently large to allow insertion of the crown wheel assembly into the cavity 95.
  • the gasket and cover components may be manufactured from a material that has a high damping coefficient. This property prevents the transmission of noise and vibrations from the housing component to the covers and thereby reduces the emission of noise from the differential transmission to the environment. This is achieved by using the elastic hysteresis of the gasket material to dissipate the kinetic energy of the covers into the environment as heat rather than sound.
  • the boot 3156 is of a known design. It is preferable that the boot 3156 is made of a durable material so it can withstand the articulation of the CV joint 304 as well as the risk of impact with a foreign object in use. Therefore, the boot 3156 is typically made of rubber or a similar durable flexible material.
  • the benefit of the sealing boot arrangement of Figures 22 to 24, compared to the arrangement of Figure 7G, is that the large diameter seals (155 and 165) are no longer required. Instead a smaller diameter seal 3169 can be used, as it seals the boot at the drive shaft 302 rather than at the side gear 150. This reduces the frictional drag losses within the system and therefore improves the overall efficiency of the differential.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

Cette invention concerne un ensemble d'engrenages de différentiel (1) et un procédé d'assemblage. Ledit différentiel (1) comprend un boîtier (290, 390, 90) de différentiel (1) qui est configuré de telle sorte qu'un ensemble couple conique (10, 40, 80) puisse être introduit dans le boîtier (290, 390, 90) dans un mouvement latéral pour assembler des parties mobiles du différentiel (1) à l'intérieur du boîtier (290, 390, 90). Le boîtier structural (90) forme de préférence une seule pièce. L'ensemble couple conique (10, 40, 80) est de préférence supporté dans le boîtier (290, 390, 90) par un seul palier d'engrenage conique (180). L'ensemble couple conique (10, 40, 80) est configuré de manière à présenter une longueur axiale réduite, de manière à s'ajuster à travers une ouverture relativement petite d'ensemble couple conique (910, 91) du boîtier (290, 390, 90). Un couvercle non structural (1200, 1500) peut être fourni pour couvrir (1200, 1500) l'ouverture d'ensemble couple conique (910, 91).
PCT/GB2016/051877 2015-06-23 2016-06-23 Ensemble d'engrenages de différentiel et procédé d'assemblage Ceased WO2016207635A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1511068.7A GB201511068D0 (en) 2015-06-23 2015-06-23 A mechanism
GB1511068.7 2015-06-23

Publications (1)

Publication Number Publication Date
WO2016207635A1 true WO2016207635A1 (fr) 2016-12-29

Family

ID=53784416

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/GB2016/051876 Ceased WO2016207634A1 (fr) 2015-06-23 2016-06-23 Différentiel
PCT/GB2016/051875 Ceased WO2016207633A2 (fr) 2015-06-23 2016-06-23 Ensemble engrenage différentiel et procédé d'assemblage
PCT/GB2016/051877 Ceased WO2016207635A1 (fr) 2015-06-23 2016-06-23 Ensemble d'engrenages de différentiel et procédé d'assemblage

Family Applications Before (2)

Application Number Title Priority Date Filing Date
PCT/GB2016/051876 Ceased WO2016207634A1 (fr) 2015-06-23 2016-06-23 Différentiel
PCT/GB2016/051875 Ceased WO2016207633A2 (fr) 2015-06-23 2016-06-23 Ensemble engrenage différentiel et procédé d'assemblage

Country Status (2)

Country Link
GB (4) GB201511068D0 (fr)
WO (3) WO2016207634A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2561804A (en) * 2016-09-13 2018-10-31 Ricardo Uk Ltd A transmission casing
GB2557986A (en) * 2016-12-21 2018-07-04 Ricardo Uk Ltd Differential gear assembly and method of assembly
GB2557983A (en) * 2016-12-21 2018-07-04 Ricardo Uk Ltd Differential gear assembly and method of assembly
DE102018124491A1 (de) * 2018-10-04 2020-04-09 Schaeffler Technologies AG & Co. KG Differenzial mit Ausgleichsrädern, einem Antriebsrad und mit wenigstens einem Deckel
EP4015872B1 (fr) * 2020-12-18 2025-12-24 Ningbo Geely Automobile Research & Development Co. Ltd. Ensemble d'engrenages de différentiel, véhicule comprenant un ensemble d'engrenages de différentiel et procédé d'assemblage de pièces d'un ensemble d'engrenages de différentiel
DE102021213012B3 (de) 2021-11-18 2022-10-20 Magna powertrain gmbh & co kg Differential mit geteiltem Gehäuse und variabler Zahl an Planetenrädern sowie Montageverfahren

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EP1527936A1 (fr) * 2003-10-30 2005-05-04 Dana Corporation Essieu d'entraínement pour véhicule automobile et procédé de sa fabrication
DE102004057339A1 (de) * 2004-11-27 2006-06-01 Bayerische Motoren Werke Ag Differentialgetriebe mit integrierten Gleichlaufgelenken
EP1707423A2 (fr) * 2005-03-28 2006-10-04 American Axle & Manufacturing, Inc. Ensemble train à couvercle fileté et procédé d'assemblage
WO2008150705A1 (fr) * 2007-05-31 2008-12-11 American Axle & Manufacturing, Inc. Ensemble d'essieu de salisbury
US20150167813A1 (en) * 2013-03-15 2015-06-18 James P. Downs Axle Assembly

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Publication number Priority date Publication date Assignee Title
DE19544588A1 (de) * 1995-11-30 1997-06-05 Bayerische Motoren Werke Ag Montageverfahren für ein Ausgleichsgetriebe
EP1527936A1 (fr) * 2003-10-30 2005-05-04 Dana Corporation Essieu d'entraínement pour véhicule automobile et procédé de sa fabrication
DE102004057339A1 (de) * 2004-11-27 2006-06-01 Bayerische Motoren Werke Ag Differentialgetriebe mit integrierten Gleichlaufgelenken
EP1707423A2 (fr) * 2005-03-28 2006-10-04 American Axle & Manufacturing, Inc. Ensemble train à couvercle fileté et procédé d'assemblage
WO2008150705A1 (fr) * 2007-05-31 2008-12-11 American Axle & Manufacturing, Inc. Ensemble d'essieu de salisbury
US20150167813A1 (en) * 2013-03-15 2015-06-18 James P. Downs Axle Assembly

Also Published As

Publication number Publication date
WO2016207633A2 (fr) 2016-12-29
GB201511068D0 (en) 2015-08-05
GB201610980D0 (en) 2016-08-10
GB2540872A (en) 2017-02-01
WO2016207634A1 (fr) 2016-12-29
GB2540873A (en) 2017-02-01
GB201610981D0 (en) 2016-08-10
GB201610978D0 (en) 2016-08-10
WO2016207633A3 (fr) 2017-02-02
GB2540871A (en) 2017-02-01

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