IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0630066
(2003-07-30)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- ArvinMeritor Technology LLC
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
11 인용 특허 :
25 |
초록
▼
An axle assembly includes a first and a second electric motor which drive a gearbox assembly substantially therebetween. The electric motors drive the gearbox assembly which drives the vehicle wheels through a first and second axle shaft located along a first axis. The electric motors are located al
An axle assembly includes a first and a second electric motor which drive a gearbox assembly substantially therebetween. The electric motors drive the gearbox assembly which drives the vehicle wheels through a first and second axle shaft located along a first axis. The electric motors are located along axes which are substantially parallel to the first axis. The electric motors drive the gearbox assembly which includes a first stage gear reduction, a second stage gear reduction and a third stage gear reduction. A relatively lightweight and compact axle assembly is thereby provided which will benefit from an electric motor of reduced size.
대표청구항
▼
1. An axle assembly comprising:a first axle shaft defined substantially along a first axis of rotation;a second axle shaft defined substantially along said first axis of rotation;at least one electric motor defined substantially along a second axis of rotation, said second axis of rotation extending
1. An axle assembly comprising:a first axle shaft defined substantially along a first axis of rotation;a second axle shaft defined substantially along said first axis of rotation;at least one electric motor defined substantially along a second axis of rotation, said second axis of rotation extending along a direction having a component extending parallel to said first axis of rotation;a first stage gear reduction driven by said at least one electric motor;a second stage gear reduction driven by said first stage gear reduction; anda differential gear set driven by said second stage gear reduction to drive said first axle shaft and said second axle shaft.2. The axle assembly as recited in claim 1, wherein said at least one electric motor comprises a first electric motor defined by said second axis of rotation and a second electric motor defined along a third axis of rotation, said third axis of rotation extending along a direction having a component extending parallel to said first axis of rotation.3. The axle assembly as recited in claim 2, wherein said second axis of rotation and said third axis of rotation are parallel to said first axis of rotation.4. The axle assembly as recited in claim 1, wherein said first stage gear reduction comprises a drive gear which drives an idler gear, said idler gear drives a driven gear, and said driven gear drives said second stage gear reduction.5. The axle assembly as recited in claim 4, wherein said driven gear is a sun gear within said second stage gear reduction.6. The axle assembly as recited in claim 1, including a third stage gear reduction driven by said second stage gear reduction, said third stage gear reduction providing driving input into said differential gear set.7. The axle assembly as recited in claim 6, wherein said third reduction gear set comprises a two-speed carrier.8. An axle assembly comprising:a first axle shaft defined substantially along a first axis of rotation;a second axle shaft defined substantially along said first axis of rotation;an electric motor defined substantially along a second axis of rotation, said second axis of rotation extending along a direction having a component extending parallel to said first axis of rotation;a first stage gear reduction driven by said electric motor;a second stage gear reduction driven by said first stage gear reduction;a third stage gear reduction driven by said second stage gear reduction, said first axle shaft and said second axle shaft driven by said third stage gear reduction; andwherein said second stage gear reduction comprises a planetary gear set.9. The axle assembly as recited in claim 8, wherein said third stage gear reduction includes a differential gear set coupled to said first and second axle shafts.10. The axle assembly as recited in claim 8, wherein said planetary gear set comprises a carrier which drives said third stage gear reduction.11. An axle assembly comprising:a first axle shaft defined substantially along a first axis of rotation;a second axle shaft defined substantially along said first axis of rotation;a first electric motor defined substantially along a second axis of rotation, said second axis of rotation extending along a direction having a component extending parallel to said first axis of rotation;a second electric motor defined substantially along a third axis of rotation, said third axis of rotation extending along a direction having a component extending parallel to said first axis of rotation;a first stage gear reduction driven by said first and second electric motors;a second stage gear reduction driven by said first stage gear reduction; anda differential gear set driven by said second stage gear reduction, said first axle shaft and said second axle shaft driven by said differential gear set.12. The axle assembly as recited in claim 11, wherein said first stage gear reduction comprises a drive gear which drives an idler gear, said idler gear drives a driven gear, and said driven gear drives said second stage gear reduction.13. The axle assembly as recited in claim 12, wherein said driven gear is coaxial with said first axle shaft.14. The axle assembly as recited in claim 11, wherein said second stage gear reduction comprises a planetary gear set.15. The axle assembly as recited in claim 14, wherein said planetary gear set comprises a carrier which drives said differential gear set, said carrier coaxial with said first axis of rotation.16. The axle assembly as recited in claim 11, including a third stage gear reduction driven by said second stage gear reduction, said third stage gear reduction including an input side gear coaxial with said first axis of rotation, said input side gear driven by said second stage gear reduction.17. The axle assembly as recited in claim 16, wherein said third stage gear reduction comprises a two-spaced carrier.18. The axle assembly as recited in claim 11, wherein said second axis of rotation and said third axis of rotation are parallel to said first axis of rotation.19. An axle assembly comprising:a first axle shaft defined substantially along a first axis of rotation;a second axle shaft defined substantially along said first axis of rotation;a first electric motor defined substantially along a second axis of rotation, said second axis of rotation extending along a direction having a component extending parallel to said first axis of rotation;a second electric motor defined substantially along a third axis of rotation, said third axis of rotation extending along a direction having a component extending parallel to said first axis of rotation;a gearbox assembly comprising a first stage gear reduction driven by both said first and second electric motors, said gearbox assembly located substantially between said first and second electric motors to drive said first and second axle shafts, and said first stage gear reduction driving a common second stage gear reduction, said second axis of rotation and said third axis of rotation being spaced away from said first axis of rotation, and said first stage gear reduction being spaced from said first and second electric motors in a common axial direction such that said first electric motor and said second electric motor are spaced axially from said first stage gear reductions in a common direction.20. The axle assembly as recited in claim 19, wherein said second stage gear reduction comprises a planetary gear set comprising a non-rotating ring gear fixed to a housing of said gearbox assembly.21. The axle assembly as recited in claim 20, wherein said planetary gear set comprises a carrier coaxial with said first axis of rotation, said carrier adapted to drive a differential gear set coupled to said first and second axle shafts.22. The axle assembly as recited in claim 19, wherein said second axis of rotation and said third axis of rotation are parallel to said first axis of rotation.23. The axle assembly as recited in claim 19, wherein said second stage gear reduction is positioned on said first axis of rotation, with said first electric motor and said second electric motor being spaced radially outwardly of at least a portion of said second stage gear reduction.24. The axle assembly as recited in claim 23, including a third stage gear reduction driven by said second stage gear reduction, said third stage gear reduction being positioned radially inwardly of said first and second electric motors, and at a position along said first axis of rotation at which said first and second electric motors are positioned.25. The axle assembly as recited in claim 24, including a differential gear set driven by said third stage gear reduction, said differential gear set being coupled to said first and second axle shafts.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.