IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0444423
(2014-07-28)
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등록번호 |
US-9346518
(2016-05-24)
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발명자
/ 주소 |
- Polakowski, Stephen E.
- Muehlfeld, Christian
- McKinney, Cody
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출원인 / 주소 |
- Great Lakes Sound & Vibration, Inc.
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대리인 / 주소 |
Andrus Intellectual Property Law, LLP
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인용정보 |
피인용 횟수 :
0 인용 특허 :
34 |
초록
▼
A suspension assembly adapted for use in a snowmobile having a closed-loop track includes at least one ground contact engaged with the closed-loop track. An elongated swing arm is angularly disposed in the closed-loop track and extends between a front end portion adapted to be coupled to the chassis
A suspension assembly adapted for use in a snowmobile having a closed-loop track includes at least one ground contact engaged with the closed-loop track. An elongated swing arm is angularly disposed in the closed-loop track and extends between a front end portion adapted to be coupled to the chassis, and a rear end portion coupled to the at least one ground contact. A front resilient member is disposed in the closed-loop track and has an upper end pivotably coupled to the front end portion of the swing arm, and a lower end pivotably coupled to the at least one ground contact. A rear resilient member is disposed in the closed-loop track and has an upper end adapted to be pivotally coupled to the chassis, and a lower end pivotally coupled to the at least one ground contact. A pivot arrangement is connected to the swing arm for permitting at least rotation of the swing arm about a pivot axis extending longitudinally of the at least one ground contact. The pivot arrangement includes an arrangement for restricting and/or preventing rotation of the swing arm.
대표청구항
▼
1. A suspension assembly adapted for use with a snowmobile using a chassis enclosing a drive system for rotatably driving a closed-loop track, the suspension assembly comprising: at least one elongated ground contact engaged with the closed-loop track;an elongated swing arm angularly disposed in the
1. A suspension assembly adapted for use with a snowmobile using a chassis enclosing a drive system for rotatably driving a closed-loop track, the suspension assembly comprising: at least one elongated ground contact engaged with the closed-loop track;an elongated swing arm angularly disposed in the closed-loop track, the swing arm extending between a front end portion adapted to be coupled to the chassis, and a rear end portion coupled to the at least one ground contact;a front resilient member disposed in the closed-loop track and having an upper end pivotably coupled to the front end portion of the swing arm, and a lower end pivotably coupled to the at least one ground contact;a rear resilient member disposed in the closed-loop track and having an upper end adapted to be pivotably connected to the chassis, and a lower end pivotably coupled to the at least one ground contact; anda pivot arrangement coupled to one of the front end portion and the rear end portion of the swing arm for permitting at least rotation of the swing arm about a pivot axis extending longitudinally of the at least one ground contact, wherein the pivot arrangement is provided with separate members having respective rear and front surfaces facing each other, the separate members being connected together one in front of another for rotation relative to one another about the pivot axis, andwherein the at least one ground contact is configured to receive the separate members such that the ground contact is movable in fore and aft directions relative to the swing arm and the separate members during travel of the suspension assembly. 2. The suspension assembly of claim 1, wherein the pivot arrangement is comprised of a plate assembly connected to the front end portion of the swing arm, and pivotally connected about the pivot axis to a member adapted to be connected to the chassis of the snowmobile. 3. The suspension assembly of claim 2, wherein the plate assembly is provided with a connector adapted to couple with the upper end of the front resilient member. 4. The suspension assembly of claim 1, wherein the pivot arrangement is comprised of a plate assembly provided with a pair of plates connected together for rotation relative to one another about the pivot axis. 5. The suspension assembly of claim 4, wherein a first plate is connected to the rear end portion of the swing arm and the lower end of the rear resilient member, and a second plate is connected to the at least one ground contact such that the ground contact and swing arm are arranged for relative rotation about the pivot axis. 6. The suspension assembly of claim 5, wherein the first plate is fixedly secured to the rear end portion of the swing arm, and is pivotally connected to the lower end of the rear resilient member. 7. The suspension assembly of claim 1, wherein the at least one ground contact is comprised of a pair of spaced apart ground contacts. 8. The suspension assembly of claim 7, wherein arm alignment guards are constructed on the pair of spaced apart ground contacts for providing lateral support thereof and are configured for engagement with the swing arm. 9. The suspension assembly of claim 1, wherein the upper end of the front resilient member is provided with a first spherical joint assembly, and the lower end of the front resilient member is provided with a second spherical joint assembly. 10. The suspension assembly of claim 9, wherein the lower end of the rear resilient member is provided with a third spherical joint assembly. 11. A suspension assembly adapted for use in a snowmobile having a chassis enclosing a drive system for rotatably driving a closed-loop track, the suspension assembly comprising: at least one elongated ground contact engaged with the closed-loop track;an elongated swing arm angularly disposed in the closed-loop track, the swing arm extending between a front end portion adapted to be coupled to the chassis, and a rear end portion coupled to the at least one ground contact;a front resilient member disposed in the closed-loop track and having an upper end pivotally coupled to the front end portion of the swing arm, and a lower end pivotally coupled to the at least one ground contact;a rear resilient member disposed in the closed-loop track and having an upper end adapted to be pivotally connected to the chassis, and a lower end pivotally connected to the at least one ground contact; anda pivot plate assembly provided with a pair of separate plates having respective rear and front surfaces facing each other, the plates being connected together one in front of another for rotation relative to one another about a pivot axis extending longitudinally of the at least one ground contact, a first plate being connected to the rear end portion of the swing arm and the lower end of the rear resilient member, and a second plate being connected to the ground contact,wherein the at least one ground contact and the swing arm are arranged for relative rotation about the pivot axis. 12. The suspension assembly of claim 11, wherein the first plate is fixedly secured to the rear end portion of the swing arm, and is pivotally connected to the lower end of the rear resilient member. 13. The suspension assembly of claim 11, wherein the at least one ground contact is comprised of a pair of spaced apart ground contacts, and the pivot plate assembly is positioned between the pair of spaced apart ground contacts. 14. The suspension assembly of claim 13, wherein the pair of spaced apart ground contacts is provided with arm alignment guards engagable with the swing arm along the length thereof for preventing over-rotation of the ground contacts about the pivot axis. 15. The suspension assembly of claim 14, wherein the swing arm extends rearwardly and downwardly along a bent portion located between the front end portion and the rear end portion, and arm alignment guards are provided on inner surfaces of the ground contacts between the pivot plate assembly and the bent portion. 16. The suspension assembly of claim 11, wherein the upper end of the front resilient member is provided with a first spherical joint assembly and the lower end of the front resilient member is provided with a second spherical joint assembly. 17. The suspension assembly of claim 16, wherein the lower end of the rear resilient member is provided with a third spherical joint assembly. 18. The suspension assembly of claim 11, wherein the pivot plate assembly is constructed with a lockout arrangement for preventing relative rotation between the first plate and the second plate. 19. The suspension assembly of claim 18, wherein the lockout arrangement includes a set of lockout pins which extend through the first plate and the second plate. 20. The suspension assembly of claim 11, wherein the pivot plate assembly is constructed with a rotation limiting arrangement for restricting relative rotation between the first plate and the second plate. 21. The suspension assembly of claim 20, wherein the rotation limiting arrangement includes a lovejoy coupler positioned between the first plate and the second plate. 22. The suspension assembly of claim 20, wherein the rotation limiting arrangement includes a bracket connected to the second plate and provided with an arm arrangement having adjustment bolts which are engagable with the first plate. 23. The suspension assembly of claim 11, wherein the rear end portion of the swing arm is connected to the first plate at an angle in the range of 4 degrees-10 degrees. 24. The suspension assembly of claim 11, wherein the rear end portion of the swing arm is connected to the first plate at an angle of 7 degrees. 25. A suspension assembly adapted for use in a snowmobile having a chassis enclosing a drive system for rotatably driving a closed-loop track, the suspension assembly comprising: a pair of spaced elongated ground contacts engaged with the closed-loop track;an elongated swing arm angularly disposed in the closed-loop track, the swing arm extending between a front end portion adapted to be coupled to the chassis, and a rear end portion coupled to the pair of ground contacts, the swing arm having an elongated portion extending between the pair of ground contacts;a front resilient member disposed in the closed-loop track having an upper end pivotally connected to the front end portion of the swing arm, and a lower end pivotally coupled to the pair of ground contacts;a rear resilient member disposed in the closed-loop track and having an upper end adapted to be pivotally connected to the chassis, and a lower end pivotally coupled to the pair of ground contacts;a pivot arrangement connected to the swing arm for permitting at least rotation of the elongated portion of the swing arm between the pair of ground contacts about a pivot axis extending longitudinally of the pair of ground contacts;wherein the pivot arrangement includes an arrangement for providing at least one of restricting and preventing rotation of the swing arm about the pivot axis and between the pair of ground contacts.
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