IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0334706
(2011-12-22)
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등록번호 |
US-8607912
(2013-12-17)
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발명자
/ 주소 |
- Mallette, Bertrand
- Fecteau, Berthold
- Thibault, Sebastien
|
출원인 / 주소 |
- Bombardier Recreational Products Inc.
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
6 |
초록
▼
A suspension system for a snowmobile has a rail and first and second suspension arms having lower ends pivotally connected to the rail. A first shock absorber pivotally connected between the first suspension arm and the rail. A second shock absorber operatively pivotally connected between the first
A suspension system for a snowmobile has a rail and first and second suspension arms having lower ends pivotally connected to the rail. A first shock absorber pivotally connected between the first suspension arm and the rail. A second shock absorber operatively pivotally connected between the first suspension arm and the rail. Left and right brackets are connected to the second suspension arm. Left and right tie rods have lower ends operatively pivotally connected to the first suspension arm and upper ends pivotally connected to their corresponding brackets about a first pivot axis. The second shock absorber is disposed laterally between the left and right tie rods. The suspension is movable between a first position where the first pivot axis intersects the second shock absorber and a second position where the first pivot axis is spaced from the second shock absorber.
대표청구항
▼
1. A suspension system for a snowmobile having a chassis and an endless drive track, the suspension assembly comprising: a rail for engagement with the endless drive track;a first suspension arm having an upper end adapted for pivotally connecting to the chassis and a lower end pivotally connected t
1. A suspension system for a snowmobile having a chassis and an endless drive track, the suspension assembly comprising: a rail for engagement with the endless drive track;a first suspension arm having an upper end adapted for pivotally connecting to the chassis and a lower end pivotally connected to the rail, the first suspension arm extending forwardly and upwardly from the rail;a second suspension arm disposed rearwardly of the first suspension arm, the second suspension arm having an upper end adapted for pivotally connecting to the chassis and a lower end pivotally connected to the rail, the second suspension arm extending forwardly and upwardly from the rail;a first shock absorber having an upper end and a lower end, the upper end of the first shock absorber being pivotally connected to the first suspension arm, the lower end of the first shock absorber being pivotally connected to move with movement of the rail;a second shock absorber having an upper end and a lower end, the lower end of the second shock absorber being operatively pivotally connected to the rail, the upper end of the second shock absorber being pivotally connected to the second suspension arm;a left bracket connected to the second suspension arm, the left bracket being disposed on a left side of the second shock absorber;a right bracket connected to the second suspension arm, the right bracket being disposed on a right side of the second shock absorber;a left tie rod having a lower end and an upper end, the lower end of the left tie rod being operatively pivotally connected to the first suspension arm, and the upper end of the left tie rod being pivotally connected to the left bracket about a first pivot axis; anda right tie rod having a lower end and an upper end, the lower end of the right tie rod being operatively pivotally connected to the first suspension arm, and the upper end of the right tie rod being pivotally connected to the right bracket about the first pivot axis,the second shock absorber being disposed laterally between the left and right tie rods,the suspension being movable between a first position where the first pivot axis intersects the second shock absorber and a second position where the first pivot axis is spaced from the second shock absorber. 2. The suspension system of claim 1, wherein the lower end of the first shock absorber is disposed forwardly of the lower end of the first suspension arm; and the lower end of the second shock absorber is disposed rearwardly of the lower end of the first shock absorber. 3. The suspension system of claim 1, further comprising: a bracket arm having a first end and a second end, the first end of the bracket arm being fixedly connected to the first suspension arm between the upper end and the lower end of the first suspension arm; anda link having a first end and a second end, the first end of the link being pivotally connected to the second end of the bracket arm;wherein the lower end of the second shock absorber is pivotally connected to the second end of the link about a second pivot axis. 4. The suspension system of claim 3, wherein the first end of the link is pivotally connected to the second end of the bracket arm about a third pivot axis, the third pivot axis is above of the second pivot axis; and wherein the lower ends of the left and right tie rods are pivotally connected to the link about a fourth pivot axis intermediate the second and third pivot axes. 5. The suspension system of claim 1, wherein the lower end of the first shock absorber is pivotally connected to the rail. 6. The suspension assembly of claim 1, wherein the lower end of the second shock absorber is operatively pivotally connected to the first suspension arm. 7. The suspension system of claim 1, further comprising: a left fastener fastening the left tie rod to the left bracket; anda right fastener fastening the right tie rod to the right bracket. 8. The suspension system of claim 1, further comprising a gap defined between the left and right brackets along the first pivot axis, the gap being adapted to receive a portion of the second shock absorber. 9. The suspension system of claim 1, further comprising: a bracket arm having a first end and a second end, the first end of the bracket arm being fixedly connected to the first suspension arm between the upper end and the lower end of the first suspension arm; anda link having a first end and a second end, the first end of the link being pivotally connected to the second end of the bracket arm;wherein the lower end of the second shock absorber is pivotally connected to the second end of the link about a second pivot axis,wherein the first end of the link is pivotally connected to the second end of the bracket arm about a third pivot axis, the third pivot axis is above of the second pivot axis;wherein the lower ends of the left and right tie rods are pivotally connected to the link about a fourth pivot axis intermediate the second and third pivot axes; andwherein the lower end of the first suspension arm is pivotally connected to the rail about a fifth pivot axis, the second pivot axis being disposed below the first suspension arm and forward of the fifth pivot axis. 10. The suspension system of claim 9, wherein the second pivot axis is disposed forward of the fifth pivot axis. 11. A suspension system for a snowmobile having a chassis and an endless drive track, the suspension assembly comprising: a rail for engagement with the endless drive track;a first suspension arm having an upper end adapted for pivotally connecting to the chassis and a lower end pivotally connected to the rail, the first suspension arm extending forwardly and upwardly from the rail;a second suspension arm disposed rearwardly of the first suspension arm, the second suspension arm having an upper end adapted for pivotally connecting to the chassis and a lower end pivotally connected to the rail, the second suspension arm extending forwardly and upwardly from the rail;a first shock absorber having an upper end and a lower end, the upper end of the first shock absorber being pivotally connected to the first suspension arm, the lower end of the first shock absorber being pivotally connected to move with movement of the rail;a second shock absorber having an upper end and a lower end, the lower end of the second shock absorber being operatively pivotally connected to the rail, the upper end of the second shock absorber being pivotally connected to the second suspension arm;a left bracket connected to the second suspension arm, the left bracket being disposed on a left side of the second shock absorber, the left bracket including a left holder;a right bracket connected to the second suspension arm, the right bracket being disposed on a right side of the second shock absorber, the right bracket including a right holder;a left tie rod having a lower end and an upper end, the lower end of the left tie rod being operatively pivotally connected to the first suspension arm, and the upper end of the left tie rod being pivotally connected to the left holder about a first pivot axis; anda right tie rod having a lower end and an upper end, the lower end of the right tie rod being operatively pivotally connected to the first suspension arm, and the upper end of the right tie rod being pivotally connected to the right holder about the first pivot axis,the second shock absorber being disposed laterally between the left and right tie rods,the suspension being movable between a first position and a second position,in the first position, at least portions of projections of the left and right holders onto a vertical plane overlap a portion of the second shock absorber, the vertical plane passing through a lateral center of the second shock absorber,in the second position, the projections of the left and right holders are spaced from the second shock absorber. 12. The suspension system of claim 11, wherein the second shock absorber includes a shock absorber body and a piggy-back chamber connected to the shock absorber body; and wherein in the first position the at least portions of the projections of the left and right holders overlap a portion of the shock absorber body. 13. The suspension system of claim 11, wherein the left and right holders are left and right bushing holders; the suspension system further comprising: a left bushing disposed in the left bushing holder;a left fastener passing through the left bushing and fastening the left tie rod to the left bushing holder;a right bushing disposed in the right bushing holder; anda right fastener passing through the right bushing and fastening the right tie rod to the right bushing holder. 14. The suspension system of claim 11, wherein the lower end of the first shock absorber is disposed forwardly of the lower end of the first suspension arm; and the lower end of the second shock absorber is disposed rearwardly of the lower end of the first shock absorber. 15. The suspension system of claim 11, further comprising: a bracket arm having a first end and a second end, the first end of the bracket arm being fixedly connected to the first suspension arm between the upper end and the lower end of the first suspension arm; anda link having a first end and a second end, the first end of the link being pivotally connected to the second end of the bracket arm;wherein the lower end of the second shock absorber is pivotally connected to the second end of the link about a second pivot axis. 16. The suspension system of claim 15, wherein the first end of the link is pivotally connected to the second end of the bracket arm about a third pivot axis, the third pivot axis is above of the second pivot axis; and wherein the lower ends of the left and right tie rods are pivotally connected to the link about a fourth pivot axis intermediate the second and third pivot axes. 17. The suspension system of claim 11, wherein the lower end of the first shock absorber is pivotally connected to the rail. 18. The suspension assembly of claim 11, wherein the lower end of the second shock absorber is operatively pivotally connected to the first suspension arm. 19. The suspension system of claim 11, further comprising a gap defined between the left and right holders along the first pivot axis, the gap being adapted to receive a portion of the second shock absorber. 20. A suspension system for a snowmobile having a chassis and an endless drive track, the suspension assembly comprising: a rail for engagement with the endless drive track;a first suspension arm having an upper end adapted for pivotally connecting to the chassis and a lower end pivotally connected to the rail, the first suspension arm extending forwardly and upwardly from the rail;a second suspension arm disposed rearwardly of the first suspension arm, the second suspension arm having an upper end adapted for pivotally connecting to the chassis and a lower end pivotally connected to the rail, the second suspension arm extending forwardly and upwardly from the rail;a first shock absorber having an upper end and a lower end, the upper end of the first shock absorber being pivotally connected to the first suspension arm, the lower end of the first shock absorber being pivotally connected to move with movement of the rail;a second shock absorber having an upper end and a lower end, the lower end of the second shock absorber being operatively pivotally connected to the rail, the upper end of the second shock absorber being pivotally connected to the second suspension arm;a left bracket connected to the second suspension arm, the left bracket being disposed on a left side of the second shock absorber;a right bracket connected to the second suspension arm, the right bracket being disposed on a right side of the second shock absorber;a left tie rod having a lower end and an upper end, the lower end of the left tie rod being operatively pivotally connected to the first suspension arm, and the upper end of the left tie rod being pivotally connected to the left holder at a left pivot point; anda right tie rod having a lower end and an upper end, the lower end of the right tie rod being operatively pivotally connected to the first suspension arm, and the upper end of the right tie rod being pivotally connected to the right holder at a right pivot point,the second shock absorber being disposed laterally between the left and right tie rods,the suspension being movable between a first position and a second position,in the first position, an axis passing through the left and right pivot points intersects the second shock absorber,in the second position, the axis is spaced from the second shock absorber. 21. The suspension system of claim 20, further comprising a gap defined between the left and right brackets along the axis, the gap being adapted to receive a portion of the second shock absorber. 22. The suspension system of claim 20, wherein the axis is a first pivot axis; the suspension system further comprising: a bracket arm having a first end and a second end, the first end of the bracket arm being fixedly connected to the first suspension arm between the upper end and the lower end of the first suspension arm; anda link having a first end and a second end, the first end of the link being pivotally connected to the second end of the bracket arm;wherein the lower end of the second shock absorber is pivotally connected to the second end of the link about a second pivot axis.wherein the first end of the link is pivotally connected to the second end of the bracket arm about a third pivot axis, the third pivot axis is above of the second pivot axis;wherein the lower ends of the left and right tie rods are pivotally connected to the link about a fourth pivot axis intermediate the second and third pivot axes; andwherein the lower end of the first suspension arm is pivotally connected to the rail about a fifth pivot axis, the second pivot axis being disposed below the first suspension arm and forward of the fifth pivot axis. 23. The suspension system of claim 22, wherein the second pivot axis is disposed above the fifth pivot axis.
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