[특허]Track assembly for providing traction to an off-road vehicle such as an all-terrain vehicle (ATV) or a snowmobile

Camso Inc.

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Track assembly for providing traction to an off-road vehicle such as an all-terrain vehicle (ATV) or a snowmobile

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-055/10 B62D-055/088 B62D-055/084 B62D-055/065 B62D-055/104 B62D-055/12 B62D-055/14 B62K-005/01 B62M-027/02
출원번호	US-0947168 (2015-11-20)
등록번호	US-9914497 (2018-03-13)
발명자 / 주소	Zuchoski, Jeremie Jean, Bernard
출원인 / 주소	Camso Inc.
대리인 / 주소	Fish & Richardson P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 19

초록
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A track assembly for traction of an off-road vehicle, such as an all-terrain vehicle (ATV) or a snowmobile, is disclosed. The track assembly comprises a plurality of track-contacting wheels, which comprises: a drive wheel; and a plurality of idler wheels spaced apart in a longitudinal direction of the track assembly. The track assembly also comprises an endless track disposed around the track-contacting wheels. A frame of the track assembly may comprise a hollow frame structure. The hollow frame structure may be dimensioned to impede accumulation of snow, mud, rocks, debris, etc. in the track assembly. The track assembly may comprise interwheel guides between longitudinally adjacent ones of the idler wheels to contact a bottom run of the endless track, and/or fenders adjacent to given ones of the idler wheels. The frame's hollowness, the interwheel guides, and/or the fenders may be realized during molding of a portion of the frame using a blow molding or other fluid-based molding process.

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1. A track assembly for traction of a vehicle, the track assembly comprising: a plurality of track-contacting wheels comprising: a drive wheel; anda plurality of idler wheels spaced apart in a longitudinal direction of the track assembly, an axis of rotation of the drive wheel being located between an axis of rotation of a leading one of the idler wheels and an axis of rotation of a trailing one of the idler wheels in the longitudinal direction of the track assembly;a track disposed around the track-contacting wheels to engage the ground, the track comprising an inner side facing the track-contacting wheels and a ground-engaging outer side for engaging the ground, the drive wheel being rotatable to impart motion to the track, the idler wheels contacting a bottom run of the track;an interwheel guide for contacting the bottom run of the track, the interwheel guide being located between a first one of the idler wheels and a second one of the idler wheels which are adjacent to one another in the longitudinal direction of the track assembly and comprising a track-contacting surface to contact the bottom run of the track; anda frame supporting the idler wheels, the frame comprising a nonmetallic hollow frame structure supporting respective ones of the idler wheels, the nonmetallic hollow frame structure comprising a wall that includes a top surface, a bottom surface, and lateral surfaces of the nonmetallic hollow frame structure and defines a hollow interior of the nonmetallic hollow frame structure. 2. The track assembly of claim 1, wherein the track-contacting surface of the interwheel guide is elongated in the longitudinal direction of the track assembly. 3. The track assembly of claim 1, wherein the track-contacting surface of the interwheel guide overlaps with the first one of the idler wheels and the second one of the idler wheels in a widthwise direction of the track assembly. 4. The track assembly of claim 1, wherein a point of the track-contacting surface of the interwheel guide is located in a widthwise direction of the track assembly where a point of a circumferential surface of the first one of the idler wheels and a point of a circumferential surface of the second one of the idler wheels are located. 5. The track assembly of claim 1, wherein a tangent to the track-contacting surface of the interwheel guide is generally parallel to a tangent to the first one of the idler wheels and to the second one of the idler wheels. 6. The track assembly of claim 1, wherein the track-contacting surface of the interwheel guide extends transversally to the longitudinal direction of the track assembly. 7. The track assembly of claim 1, wherein the interwheel guide is closer to a first longitudinal end of the track assembly than to a second longitudinal end of the track assembly in the longitudinal direction of the track assembly. 8. The track assembly of claim 7, wherein the track-contacting surface of the interwheel guide extends upwardly towards the first longitudinal end of the track assembly. 9. The track assembly of claim 1, wherein: the interwheel guide is a first interwheel guide; the track assembly comprises a second interwheel guide for contacting the bottom run of the track; and the second interwheel guide is located between a third one of the idler wheels and a fourth one of the idler wheels which are adjacent to one another in the longitudinal direction of the track assembly and comprises a track-contacting surface to contact the bottom run of the track. 10. The track assembly of claim 9, wherein: the track assembly comprises a third interwheel guide for contacting the bottom run of the track; the third interwheel guide is located between the first one of the idler wheels and the second one of the idler wheels and comprises a track-contacting surface to contact the bottom run of the track; and the track-contacting surface of the third wheel guide and the track-contacting surface of the first wheel guide are spaced apart in a widthwise direction of the track assembly. 11. The track assembly of claim 1, wherein: the interwheel guide is a first interwheel guide; the track assembly comprises a second interwheel guide for contacting the bottom run of the track; the second interwheel guide is located between the first one of the idler wheels and the second one of the idler wheels and comprises a track-contacting surface to contact the bottom run of the track; and the track-contacting surface of the first wheel guide and the track-contacting surface of the second wheel guide are spaced apart in a widthwise direction of the track assembly. 12. The track assembly of claim 1, the interwheel guide being molded with the frame. 13. The track assembly of claim 12, wherein the interwheel guide is blow-molded with the frame. 14. The track assembly of claim 1, wherein the nonmetallic hollow frame structure is a polymeric hollow frame structure. 15. The track assembly of claim 14, wherein the polymeric hollow frame structure is a blow-molded polymeric hollow frame structure. 16. The track assembly of claim 1, wherein a cross-sectional shape of the nonmetallic hollow frame structure changes along the longitudinal direction of the track assembly. 17. The track assembly of claim 1, wherein the nonmetallic hollow frame structure extends at least as high as a given one of the idler wheels. 18. The track assembly of claim 1, wherein the hollow interior occupies at least 80% of a volume of the nonmetallic hollow frame structure. 19. The track assembly of claim 1, comprising a metallic frame structure extending upwardly from the nonmetallic hollow frame structure. 20. The track assembly of claim 19, wherein the metallic frame structure comprises a pair of frame members which converge upwardly. 21. The track assembly of claim 1, the frame supporting the idler wheels being pivotable about a pivot axis. 22. The track assembly of claim 21, wherein the pivot axis of the frame corresponds to an axis of rotation of the drive wheel. 23. The track assembly of claim 1, wherein a distance between the axis of rotation of the drive wheel and the axis of rotation of the leading one of the idler wheels is different from a distance between the axis of rotation of the drive wheel and the axis of rotation of the trailing one of the idler wheels. 24. The track assembly of claim 1, wherein the bottom run of the track bends in the longitudinal direction of the track assembly between the axis of rotation of the leading one of the idler wheels and the axis of rotation of the trailing one of the idler wheels. 25. The track assembly of claim 1, wherein the track assembly is steerable by a steering device of the vehicle to change an orientation of the track assembly relative to a chassis of the vehicle in order to steer the vehicle. 26. A vehicle comprising the track assembly of claim 1. 27. The track assembly of claim 26, wherein the vehicle is an all-terrain vehicle (ATV). 28. A track assembly for traction of a vehicle, the track assembly comprising: a plurality of track-contacting wheels comprising: a drive wheel; anda plurality of idler wheels spaced apart in a longitudinal direction of the track assembly;a track disposed around the track-contacting wheels to engage the ground, the track comprising an inner side facing the track-contacting wheels and a ground-engaging outer side for engaging the ground, the drive wheel being rotatable to impart motion to the track, the idler wheels contacting a bottom run of the track;an interwheel guide for contacting the bottom run of the track, the interwheel guide being located between a first one of the idler wheels and a second one of the idler wheels which are adjacent to one another in the longitudinal direction of the track assembly and comprising a track-contacting surface to contact the bottom run of the track, wherein a point of the track-contacting surface of the interwheel guide is located in a widthwise direction of the track assembly where a point of a circumferential surface of the first one of the idler wheels and a point of a circumferential surface of the second one of the idler wheels are located; anda frame supporting the idler wheels, the frame comprising a nonmetallic hollow frame structure supporting respective ones of the idler wheels, the nonmetallic hollow frame structure comprising a wall that includes a top surface, a bottom surface, and lateral surfaces of the nonmetallic hollow frame structure and defines a hollow interior of the nonmetallic hollow frame structure. 29. The track assembly of claim 28, wherein the track-contacting surface of the interwheel guide is elongated in the longitudinal direction of the track assembly. 30. The track assembly of claim 28, wherein a tangent to the track-contacting surface of the interwheel guide is generally parallel to a tangent to the first one of the idler wheels and to the second one of the idler wheels. 31. The track assembly of claim 28, wherein the track-contacting surface of the interwheel guide extends transversally to the longitudinal direction of the track assembly. 32. The track assembly of claim 28, wherein the interwheel guide is closer to a first longitudinal end of the track assembly than to a second longitudinal end of the track assembly in the longitudinal direction of the track assembly. 33. The track assembly of claim 32, wherein the track-contacting surface of the interwheel guide extends upwardly towards the first longitudinal end of the track assembly. 34. The track assembly of claim 28, wherein: the interwheel guide is a first interwheel guide; the track assembly comprises a second interwheel guide for contacting the bottom run of the track; and the second interwheel guide is located between a third one of the idler wheels and a fourth one of the idler wheels which are adjacent to one another in the longitudinal direction of the track assembly and comprises a track-contacting surface to contact the bottom run of the track. 35. The track assembly of claim 34, wherein: the track assembly comprises a third interwheel guide for contacting the bottom run of the track; the third interwheel guide is located between the first one of the idler wheels and the second one of the idler wheels and comprises a track-contacting surface to contact the bottom run of the track; and the track-contacting surface of the third wheel guide and the track-contacting surface of the first wheel guide are spaced apart in a widthwise direction of the track assembly. 36. The track assembly of claim 28, wherein: the interwheel guide is a first interwheel guide; the track assembly comprises a second interwheel guide for contacting the bottom run of the track; the second interwheel guide is located between the first one of the idler wheels and the second one of the idler wheels and comprises a track-contacting surface to contact the bottom run of the track; and the track-contacting surface of the first wheel guide and the track-contacting surface of the second wheel guide are spaced apart in a widthwise direction of the track assembly. 37. The track assembly of claim 28, the interwheel guide being molded with the frame. 38. The track assembly of claim 37, wherein the interwheel guide is blow-molded with the frame. 39. The track assembly of claim 28, wherein the nonmetallic hollow frame structure is a polymeric hollow frame structure. 40. The track assembly of claim 28, wherein the polymeric hollow frame structure is a blow-molded polymeric hollow frame structure. 41. The track assembly of claim 28, wherein a cross-sectional shape of the nonmetallic hollow frame structure changes along the longitudinal direction of the track assembly. 42. The track assembly of claim 28, the frame supporting the idler wheels being pivotable about a pivot axis. 43. The track assembly of claim 42, wherein the pivot axis of the frame corresponds to an axis of rotation of the drive wheel. 44. The track assembly of claim 28, wherein an axis of rotation of the drive wheel is located between an axis of rotation of a leading one of the idler wheels and an axis of rotation of a trailing one of the idler wheels in the longitudinal direction of the track assembly. 45. The track assembly of claim 44, wherein a distance between the axis of rotation of the drive wheel and the axis of rotation of the leading one of the idler wheels is different from a distance between the axis of rotation of the drive wheel and the axis of rotation of the trailing one of the idler wheels. 46. The track assembly of claim 28, wherein the bottom run of the track bends in the longitudinal direction of the track assembly between an axis of rotation of a leading one of the idler wheels and an axis of rotation of a trailing one of the idler wheels. 47. The track assembly of claim 28, wherein the track assembly is steerable by a steering device of the vehicle to change an orientation of the track assembly relative to a chassis of the vehicle in order to steer the vehicle. 48. A vehicle comprising the track assembly of claim 28. 49. The track assembly of claim 48, wherein the vehicle is an all-terrain vehicle (ATV).

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Track assembly for providing traction to an off-road vehicle such as an all-terrain vehicle (ATV) or a snowmobile

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Track assembly for providing traction to an off-road vehicle such as an all-terrain vehicle (ATV) or a snowmobile

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