IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0685124
(2012-11-26)
|
등록번호 |
US-8499877
(2013-08-06)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
22 |
초록
A rear suspension architecture is provided for coupled rear suspension systems.
대표청구항
▼
1. A snowmobile having a coupled suspension system, the snowmobile comprising: a chassis;a lower rail;a front control arm defining a first length extending between first and second spaced-apart ends, the front control arm pivotally coupled to the chassis on the first end at a first pivot axis and pi
1. A snowmobile having a coupled suspension system, the snowmobile comprising: a chassis;a lower rail;a front control arm defining a first length extending between first and second spaced-apart ends, the front control arm pivotally coupled to the chassis on the first end at a first pivot axis and pivotally coupled to the lower rail on the second end at a second pivot axis;a rear control arm pivotally coupled to the chassis at a third pivot axis and pivotally coupled to the lower rail;a linkage assembly supported by the front control arm at a position between the first and second ends of the front control arm, the linkage assembly including a coupling link having first and second spaced-apart ends, the second end of the coupling link being operably coupled to the front control arm; anda shock absorber and pull rod each including first and second spaced-apart ends, the second ends of the shock absorber and pull rod being operably coupled to the coupling link away from the second end of the coupling link, and the first ends of the shock absorber and pull rod being operably coupled to the rear control arm, the first end of the shock absorber being positioned above the first end of the pull rod, the second end of the shock absorber is pivotally coupled to the coupling link at a fourth pivot axis, and the coupling link is pivotally coupled relative to the front control arm at a fifth pivot axis, wherein:a first plane is defined by the first pivot axis and the third pivot axis;a second plane is defined by the second pivot axis and the third pivot axis;a third plane is defined by the fourth pivot axis and the third pivot axis;a fourth plane is defined by the fifth pivot axis and the third pivot axis;a first acute angle is formed by the first plane and the second plane, the second pivot axis is below the first plane;a second acute angle is formed by the first plane and the third plane, the fourth pivot axis is below the first plane, the second acute angle is less than the first acute angle; anda third acute angle is formed by the first plane and the fourth plane, the fifth pivot axis is below the first plane, the third acute angle is less than the second acute angle. 2. The snowmobile of claim 1, wherein the first end of the pull rod is positioned below the first plane. 3. The snowmobile of claim 1, wherein the second end of the pull rod is positioned below the fourth plane. 4. The snowmobile of claim 1, wherein a fifth plane is defined by the first pivot axis and the second pivot axis, the fourth pivot axis is below the fifth plane. 5. The snowmobile of claim 4, wherein the fifth pivot axis is above the fifth plane. 6. The snowmobile of claim 5, wherein the first end of the pull rod is positioned below the first plane, and the second end of the pull rod is positioned below the fourth plane. 7. The snowmobile of claim 6, wherein the pull rod intersects the third plane. 8. The snowmobile of claim 1, wherein a fifth plane is defined by the first pivot axis and the second pivot axis, the fifth pivot axis is above the fifth plane. 9. The snowmobile of claim 8, wherein the shock absorber intersects the third plane. 10. The snowmobile of claim 1, further comprising a second front control arm to define a pair of front control arms, the coupling link is centered between the front control arms. 11. The snowmobile of claim 1, further comprising a second lower rail, the coupling link is centered between the lower rail and the second lower rail. 12. The snowmobile of claim 1, further comprising a second front control arm to define a pair of front control arms, the shock absorber is centered between the front control arms. 13. The snowmobile of claim 1, further comprising a second lower rail, the shock absorber is centered between the lower rail and the second lower rail. 14. The snowmobile of claim 1, further comprising an idler roller coupled to the lower rail and an endless drive belt passing underneath the idler roller, wherein the position the linkage assembly is supported by the front control arm is above the idler roller. 15. The snowmobile of claim 1, wherein the shock absorber includes a rod member operably coupled to a cylinder, the cylinder being operably coupled to the rear control arm and the rod member being operably coupled to the coupling link, the rod member being forward of the cylinder. 16. The snowmobile of claim 1, wherein the pull rod is pivotally coupled to the coupling link at a sixth pivot axis, the sixth pivot axis being spaced apart from the fourth pivot axis and spaced apart from the fifth pivot axis. 17. The snowmobile of claim 1, wherein the rear control arm is pivotally connected to a coupling member which in turn is pivotally connected to the lower rail. 18. A snowmobile having a coupled suspension system, the snowmobile comprising: a chassis;a lower rail;a front control arm defining a first length extending between first and second spaced-apart ends, the front control arm pivotally coupled to the chassis on the first end and pivotally coupled to the lower rail on the second end;a rear control arm pivotally coupled to the chassis and lower rail;a linkage assembly supported by the front control arm and including a bracket coupled to the front control arm between the first and second spaced-apart ends of the front control arm and a coupling link supported by the bracket and having first and second spaced-apart ends, the second end of the coupling link being pivotally connected to the bracket above the front control arm at a link pivot axis, the link pivot axis being between the first and second spaced-apart ends of the front control arm, the first end of the coupling link is vertically positioned between the first and second spaced-apart ends of the front control arm and extends below the front control arm; anda shock absorber and pull rod each including first and second spaced-apart ends, the second ends of the shock absorber and pull rod being operably coupled to the coupling link, the second end of the shock absorber being coupled to the first end of the coupling link extending below the front control arm, and the first ends of the shock absorber and pull rod being operably coupled to the rear control arm with the first end of the shock absorber being positioned above the first end of the pull rod, wherein the second end of the shock absorber is pivotally connected to the first end of the coupling link about a first pivot axis, the first pivot axis is disposed such that the front control arm is disposed between the first pivot axis and the link pivot axis. 19. The snowmobile of claim 18, wherein the first pivot axis is positioned below the front control arm, below the first end of the front control arm, and above the second end of the front control arm. 20. The snowmobile of claim 18, further comprising a second front control arm to define a pair of front control arms, the shock absorber is centered between the front control arms. 21. The snowmobile of claim 18, further comprising a second lower rail, the shock absorber is centered between the lower rail and the second lower rail. 22. The snowmobile of claim 18, further comprising a second front control arm to define a pair of front control arms, the coupling link is centered between the front control arms. 23. The snowmobile of claim 18, further comprising an idler roller coupled to the lower rail and an endless drive belt passing underneath the idler roller, wherein the linkage assembly is supported by the front control arm at a position above the idler roller. 24. The snowmobile of claim 18, wherein the shock absorber includes a rod member operably coupled to a cylinder, the cylinder being operably coupled to the rear control arm and the rod member being operably coupled to the coupling link, the rod member being forward of the cylinder. 25. The snowmobile of claim 18, wherein the second end of the pull rod is pivotally coupled to the coupling link and is spaced apart from the second end of the shock absorber. 26. The snowmobile of claim 18, wherein the rear control arm is pivotally connected to a coupling member which in turn is pivotally connected to the lower rail. 27. A snowmobile having a coupled suspension system, the snowmobile comprising: a chassis;a lower rail;a front control arm defining a first length extending between first and second spaced-apart ends, the front control arm pivotally coupled to the chassis on the first end and pivotally coupled to the lower rail on the second end;a rear control arm pivotally coupled to the chassis and lower rail;a linkage assembly supported by the front control arm and including a bracket coupled to the front control arm between the first and second spaced-apart ends of the front control arm and a coupling link supported by the bracket and having first and second spaced-apart ends, the second end of the coupling link being pivotally connected to the bracket above the front control arm at a link pivot axis, the link pivot axis being between the first and second spaced-apart ends of the front control arm, the first end of the coupling link is vertically positioned between the first and second spaced-apart ends of the front control arm and extends below the front control arm; anda shock absorber and pull rod each including first and second spaced-apart ends, the second ends of the shock absorber and pull rod being operably coupled to the coupling link, the second end of the shock absorber being coupled to the first end of the coupling link extending below the front control arm, and the first ends of the shock absorber and pull rod being operably coupled to the rear control arm with the first end of the shock absorber being positioned above the first end of the pull rod, wherein the second end of the shock absorber is pivotally connected to the first end of the coupling link about a first pivot axis, the first pivot axis is positioned below the front control arm, below the first end of the front control arm, and above the second end of the front control arm and wherein the second end of the pull rod is pivotally connected to the coupling link between the first end of the coupling link and the second end of the coupling link. 28. The snowmobile of claim 27, wherein the rear control arm is pivotally connected to a coupling member which in turn is pivotally connected to the lower rail. 29. A snowmobile having a coupled suspension system, the snowmobile comprising: a chassis;a lower rail;an endless drive belt, the lower rail positioned within an interior of the endless drive belt;an idler roller coupled to the lower rail and contacting the endless drive belt;a front control arm defining a first length extending between first and second spaced-apart ends, the front control arm pivotally coupled to the chassis on the first end and pivotally coupled to the lower rail on the second end;a rear control arm pivotally coupled to the chassis and lower rail;a linkage assembly supported by the front control arm and including a bracket coupled to the front control arm, anda coupling link having first and second spaced-apart ends, the second end of the coupling link being pivotally connected to the bracket at a link pivot axis vertically positioned between the first and second spaced-apart ends of the front control arm, above the idler roller and below the chassis;a shock absorber including first and second spaced-apart ends, the second end of the shock absorber being pivotally coupled to the coupling link at a first pivot axis; anda pull rod including first and second spaced-apart ends, the second end of the pull rod being pivotally coupled to the coupling link at a second pivot axis, the second pivot axis being vertically positioned between the first and second spaced-apart ends of the front control arm, above the idler roller and below the chassis, the second pivot axis being spaced-apart from the link pivot axis, spaced-apart from the first pivot axis, positioned between the link pivot axis and the first pivot axis, and positioned between the idler roller and the link pivot axis, wherein the first ends of the shock absorber and pull rod are operably coupled to the rear control arm with the first end of the shock absorber being positioned above the first end of the pull rod. 30. The snowmobile of claim 29, wherein the rear control arm is pivotally connected to a coupling member which in turn is pivotally connected to the lower rail.
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