WO2010016896A1 - Ensemble boîtier de différentiel - Google Patents

Ensemble boîtier de différentiel Download PDF

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Publication number
WO2010016896A1
WO2010016896A1 PCT/US2009/004475 US2009004475W WO2010016896A1 WO 2010016896 A1 WO2010016896 A1 WO 2010016896A1 US 2009004475 W US2009004475 W US 2009004475W WO 2010016896 A1 WO2010016896 A1 WO 2010016896A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
differential
differential case
set forth
members
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/US2009/004475
Other languages
English (en)
Inventor
Paul H. Petruska
David M. Zueski
Jeremy L. Cradit
Scott E. Hall
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.)
McLaren Performance Technologies Inc
Original Assignee
McLaren Performance Technologies Inc
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 McLaren Performance Technologies Inc filed Critical McLaren Performance Technologies Inc
Publication of WO2010016896A1 publication Critical patent/WO2010016896A1/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
    • F16H48/06—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
    • F16H2048/382—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
    • 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

Definitions

  • the invention relates to differentials for motor vehicles. More particularly, the invention relates to a differential case including first and second case members welded to one another along an inboard edge thereof.
  • a conventional drive axle assembly includes a drive axle housing from which a pair of axle shafts extends to rotatably support one or more wheels on opposite sides of a motor vehicle. Power is input to the drive axle assembly through an input shaft that rotates a drive pinion.
  • the drive pinion engages a ring gear that is coupled to a differential case rotatably supported within the drive axle housing.
  • a plurality of gears including a pair of pinion gears and a pair of side gears, is mounted within the differential case. Rotation of the differential case (through the action of the drive pinion and the ring gear) causes rotation of a crosspin and the pinion gears mounted therealong.
  • the pinion gears engage the side gears that are coupled to the axle shafts.
  • a differential case is operably coupled to a drive pinion of an engine drive shaft.
  • the differential case includes first and second case members each including an inboard edge.
  • the first and second case members are fixedly secured to one another along the respective inboard edges.
  • a ring gear is fixedly secured along at least one of the first and second case members. The ring gear is engageable with the drive pinion of the engine drive shaft to effect rotational movement of the differential case.
  • a differential case is operably coupled to a drive pinion of an engine drive shaft.
  • the differential case includes a first case member including an inboard edge defining a mounting recess, and a second case member including an inboard edge defining a mounting recess.
  • the first and second case members are fixedly secured to one another along the respective inboard edges.
  • the differential case also includes a differential crosspin having a main body extending between opposing first and second ends each including a mounting tab.
  • One of the mounting tabs is fixedly mounted within the mounting recess of the first case member and the other of the mounting tabs is fixedly mounted within the mounting recess of the second case member to prevent radial rotation and lateral movement of the differential crosspin relative to the first and second case members.
  • a differential case is operably coupled to a drive pinion of an engine drive shaft.
  • the differential case includes a first case member extending between opposing inboard and outboard edges and having an outer wall, and a second case member extending between opposing inboard and outboard edges and having an outer wall.
  • the first and second case members are fixedly secured to one another along the respective inboard edges.
  • the differential case also includes a ring gear fixedly secured to at least one of the first and second case members.
  • the ring gear is engageable with the drive pinion of the engine drive shaft to effect rotational movement of the differential case.
  • At least one of the first and second case members includes a plurality of recesses extending through the outer wall thereof.
  • Figure IA is a perspective view of a differential case according to one embodiment
  • Figure IB is a perspective view, partially cut away, of the differential case including a differential crosspin and pinion gears mounted therealong;
  • Figure 2 is an exploded perspective view of the differential case
  • Figures 3A and 3B are perspective views of the first case member of the differential case
  • Figure 4A is a perspective view of the differential case
  • Figure 4B is an elevational view of the differential case
  • Figure 4C is a cross-sectional view taken along lines C-C in Figure 4B;
  • Figure 4D is a cross-sectional view taken along lines D-D in Figure 4B;
  • Figures 5A and 5B are perspective views of the differential case including a ring gear fixedly secured therealong;
  • Figure 5C is a perspective view, partially cut away, of the differential case and ring gear in Figures 5A and 5B;
  • Figure 6A is a front perspective view of the differential crosspin
  • Figure 6B is a side view of the differential crosspin
  • Figure 6C is a rear perspective view of the differential crosspin
  • Figures 7A and 7B are perspective views of a differential case according to another embodiment including a ring gear mounted therealong;
  • Figure 7C is a perspective view, partially cut away, of the differential case and ring gear in Figures 7 A and 7B.
  • a differential case for a differential assembly including a differential housing (not shown).
  • the differential case 10 includes first 12 and second 14 case members.
  • Each of the first 12 and second 14 case members includes numerous cylindrical sections of varying diameters.
  • the first 12 and second 14 case members are identical in shape and size. It is, however, appreciated that the particular shape, size, and configuration of the first 12 and second 14 case members may vary, i.e., the first case member 12 may have a length greater than the second case member 14.
  • Each of the first 12 and second 14 case members includes an outer wall 15 and defines an interior portion 16.
  • the first 12 and second 14 case members each extend between an inboard edge 18 and an outboard edge 19.
  • the inboard 18 and outboard 19 edges are generally circular.
  • the interior portion 16 extends from the inboard edge 18 to the outboard edge 19.
  • the first 12 and second 14 case members also include a hub 20 formed proximate the outboard edge 19.
  • Each hub 20 defines an opening 22 for receiving an axle shaft therethrough.
  • One end of each axle shaft is fixedly secured to a wheel of a motor vehicle.
  • the first 12 and second 14 case members are formed as separate cast iron components and are fixedly secured to one another to form the differential case 10.
  • first case member 12 and the second case member 14 are welded to one another all along the inboard edge 18 of the first 12 and second 14 case members.
  • the welding of the first 12 and second 14 case members to one another may be accomplished by any of numerous welding techniques including laser welding or electronic beam welding.
  • the formation of the differential case 10 from the separate first 12 and second 14 case members allows the assembly of various components, including a pair of side gears 24, 26 operably coupled to the axle shafts, pair of side gear thrust washers 25, 27, a pair of pinion gears 28, 30, a pair of pinion gear thrust washers 29, 31, and a differential crosspin 32, within the interior portion 16 of each of the first 12 and second 14 case members prior to the welding of the first 12 and second 14 case members to one another.
  • a ring gear 34 is welded to the differential case 10 along an outer surface 36 thereof. As a result of such fixed engagement, rotation of the ring gear 34 rotates the differential case 10.
  • the ring gear 34 engages a drive pinion (not shown) in order to couple the differential case 10 to an engine drive shaft (not shown).
  • the outer surface 36 of the differential case 10 is the outer walls 15 of the first 12 and second 14 case members.
  • the ring gear 34 abuts the outer wall 15 of at least one of the first 12 and second 14 case members. It is contemplated that the ring gear 34 may be mounted at any of numerous locations along the outer surface 36 of the differential case 10.
  • the ring gear 34 may be fixedly secured to the differential case 10 by electronic beam welding, laser welding, or the like.
  • the differential case includes a flange, and the ring gear is fastened to the flange by bolts.
  • the direct welding of the ring gear 34 to the differential case 10 in one embodiment eliminates the need for the differential case 10 to include the flange or the bolts. Further, because the placement of the ring gear 34 in the current embodiment is not reliant upon the position of such a flange, the ring gear 34 may, as mentioned above, be welded at any of numerous locations along the outer surface 36 of the differential case 10.
  • the differential crosspin 32 includes a main body 40 extending between a first end 42 and a second end 44.
  • the main body 40 is generally cylindrical.
  • Each of the first 42 and second 44 ends includes a notch 46.
  • the notch 46 forms a mounting tab 48 that protrudes from an end wall 50.
  • the mounting tab 48 in one embodiment is generally semi-circular. However, it is contemplated that the particular shape of the mounting tab 48 may vary.
  • the differential crosspin 32 also includes a plurality of indentations 54 formed along the main body 40.
  • Each of the first 12 and second 14 case members includes a mounting recess
  • a plurality of recesses 58 is formed in at least one of the first 12' and second 14' case members. More specifically, in one embodiment the plurality of recesses 58 extends through the outer wall 15' of at least one of the first 12' and second 14' case members. The removal of material to form the plurality of recesses 58 decreases the weight of each of the first 12' and second 14' case members. The plurality of recesses 58 also allows for passage of oil therethrough to allow lubrication of the components housed within the interior portion 16' of each of the first 12' and second 14' case members of the differential case 10'.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

L'invention porte sur un boîtier de différentiel qui est couplé de façon fonctionnelle à un pignon d'attaque d'un arbre d'entraînement de moteur. Le boîtier de différentiel comprend des premier et second éléments de boîtier comprenant chacun un bord intérieur. Les premier et second éléments de boîtier sont assujettis de façon fixe l'un à l'autre le long des bords intérieurs respectifs. Une couronne est assujettie de façon fixe le long d'au moins l'un des premier et second éléments de boîtier. La couronne est apte à venir en prise avec le pignon d'attaque de l'arbre d'entraînement de moteur pour effectuer un mouvement de rotation du boîtier de différentiel.
PCT/US2009/004475 2008-08-06 2009-08-05 Ensemble boîtier de différentiel Ceased WO2010016896A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18807108P 2008-08-06 2008-08-06
US61/188,071 2008-08-06

Publications (1)

Publication Number Publication Date
WO2010016896A1 true WO2010016896A1 (fr) 2010-02-11

Family

ID=41663916

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/004475 Ceased WO2010016896A1 (fr) 2008-08-06 2009-08-05 Ensemble boîtier de différentiel

Country Status (1)

Country Link
WO (1) WO2010016896A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8827859B2 (en) 2012-10-10 2014-09-09 Eaton Corporation Differential having two-piece case split through planetary carrier wall
WO2017223549A1 (fr) * 2016-06-24 2017-12-28 Broker Nathan Fredrick Anneau soudable surmoulé pour différentiel
EP3299666A1 (fr) * 2016-09-21 2018-03-28 Meritor Heavy Vehicle Systems Cameri SpA Ensemble engrenage differentiel et ses composants
US10794461B2 (en) 2017-04-19 2020-10-06 American Axle & Manufacturing, Inc. Method for forming a welded assembly and related welded assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125026A (en) * 1974-12-02 1978-11-14 Toyota Jidosha Kogyo Kabushiki Kaisha Differential device for vehicles
US4722244A (en) * 1985-08-30 1988-02-02 Toyota Jidosha Kabushiki Kaisha Differential gear in an automobile
US6176152B1 (en) * 1998-08-10 2001-01-23 Alfred Balacan Victoria Housing for a differential mechanism of an automotive vehicle
US6196942B1 (en) * 1999-12-16 2001-03-06 Dana Corporation Modular unitized differential
US7294084B2 (en) * 2004-09-08 2007-11-13 Daimlerchrysler Ag Transverse differential of a motor vehicle and method for production thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125026A (en) * 1974-12-02 1978-11-14 Toyota Jidosha Kogyo Kabushiki Kaisha Differential device for vehicles
US4722244A (en) * 1985-08-30 1988-02-02 Toyota Jidosha Kabushiki Kaisha Differential gear in an automobile
US6176152B1 (en) * 1998-08-10 2001-01-23 Alfred Balacan Victoria Housing for a differential mechanism of an automotive vehicle
US6196942B1 (en) * 1999-12-16 2001-03-06 Dana Corporation Modular unitized differential
US7294084B2 (en) * 2004-09-08 2007-11-13 Daimlerchrysler Ag Transverse differential of a motor vehicle and method for production thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8827859B2 (en) 2012-10-10 2014-09-09 Eaton Corporation Differential having two-piece case split through planetary carrier wall
WO2017223549A1 (fr) * 2016-06-24 2017-12-28 Broker Nathan Fredrick Anneau soudable surmoulé pour différentiel
US20190203818A1 (en) * 2016-06-24 2019-07-04 Nathan Fredrick Broker Differential overmolded weldable ring
CN109996976A (zh) * 2016-06-24 2019-07-09 麦加戴恩国际有限公司 包覆模制可焊接环的差速器
CN109996976B (zh) * 2016-06-24 2022-06-28 麦加戴恩国际有限公司 包覆模制可焊接环的差速器
US11668382B2 (en) 2016-06-24 2023-06-06 Metaldyne, Llc Differential overmolded weldable ring
EP3299666A1 (fr) * 2016-09-21 2018-03-28 Meritor Heavy Vehicle Systems Cameri SpA Ensemble engrenage differentiel et ses composants
US10465783B2 (en) 2016-09-21 2019-11-05 Meritor Heavy Vehicle Systems Cameri Spa Differential gear assembly and components thereof
US10794461B2 (en) 2017-04-19 2020-10-06 American Axle & Manufacturing, Inc. Method for forming a welded assembly and related welded assembly

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