[특허]Endless track for traction of a vehicle

CAMSO INC.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Endless track for traction of a vehicle

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-055/24 B62D-055/125 B62D-055/12
출원번호	US-0325796 (2011-12-14)
등록번호	US-9162718 (2015-10-20)
발명자 / 주소	Lussier, Alain Leblanc, François Boily, Patrice
출원인 / 주소	CAMSO INC.
대리인 / 주소	Fish & Richardson P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 128

초록
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In some aspects, an endless track for traction of an off-road vehicle (e.g., an agricultural vehicle, an industrial vehicle, a construction vehicle, or a military vehicle) includes an elastomeric belt-shaped body having an inner surface for facing wheels of the vehicle and a ground-engaging outer surface. The endless track also includes elastomeric lugs, such as drive/guide lugs projecting from the inner surface and/or traction lugs projecting from the ground-engaging outer surface. The elastomeric lug may have a material defining an arrangement of zones of different materials (e.g., different elastomeric materials) to exhibit a desired variation of a material property (e.g., a modulus of elasticity) across the arrangement of zones of different materials. A zone of the elastomeric lug may have a dedicated function, such as a wear indicator zone. An elastomeric drive lug can include an uneven drive surface for engaging a drive member of a drive wheel.

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1. An endless track for traction of an off-road vehicle, the endless track being mountable around a plurality of wheels that comprises a drive wheel for driving the endless track, the drive wheel comprising a plurality of drive members spaced apart from one another, the endless track comprising: an elastomeric belt-shaped body comprising an inner surface for facing the wheels and a ground-engaging outer surface for engaging the ground; anda plurality of elastomeric drive lugs projecting from the inner surface and configured to engage the drive wheel, each elastomeric drive lug of the plurality of elastomeric drive lugs comprising a drive surface configured to contact a drive member of the plurality of drive members when the elastomeric drive lug engages the drive member, the drive member comprising a drive surface configured to contact the drive surface of the elastomeric drive lug when the elastomeric drive lug engages the drive member, the drive surface of the drive member being uneven in a direction parallel to an axis of rotation of the drive wheel such that the drive surface of the drive member comprises a recessed portion, the drive surface of the elastomeric drive lug being uneven in a widthwise direction of the endless track such that the drive surface of the elastomeric drive lug projects towards and is received in the recessed portion of the drive surface of the drive member when the elastomeric drive lug engages the drive member. 2. The endless track of claim 1, wherein the drive surface of the elastomeric drive lug defines an oblique angle relative to the widthwise direction of the endless track. 3. The endless track of claim 2, wherein the oblique angle is at least 0.5°. 4. The endless track of claim 2, wherein the oblique angle is at least 1°. 5. The endless track of claim 2, wherein the oblique angle is at least 2°. 6. The endless track of claim 2, wherein the oblique angle is at least 5°. 7. The endless track of claim 1, wherein the drive surface of the drive member defines a draft angle used in manufacturing the drive wheel, the drive surface of the elastomeric drive lug being configured to accommodate the draft angle defined by the drive member. 8. The endless track of claim 1, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.5 and 1.5. 9. The endless track of claim 1, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.8 and 1.2. 10. The endless track of claim 1, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.9 and 1.1. 11. The endless track of claim 1, wherein the drive surface of the elastomeric drive lug is curved. 12. The endless track of claim 1, wherein a contact area of the elastomeric drive lug for contacting the drive member is greater than if the drive surface of the elastomeric drive lug was substantially flat but the elastomeric drive lug was otherwise identical. 13. The endless track of claim 1, wherein an apex of the drive surface of the elastomeric drive lug is located in a central region of the elastomeric drive lug in the widthwise direction of the endless track. 14. The endless track of claim 13, wherein the apex of the drive surface of the elastomeric drive lug is located substantially at a midpoint of the elastomeric drive lug in the widthwise direction of the endless track. 15. The endless track of claim 1, wherein the drive surface of the elastomeric drive lug comprises an angular part that is received in the recessed portion of the drive surface of the drive member when the elastomeric drive lug engages the drive member. 16. The endless track of claim 1, wherein the drive surface of the elastomeric drive lug comprises a curved part that is received in the recessed portion of the drive surface of the drive member when the elastomeric drive lug engages the drive member. 17. The endless track of claim 1, wherein: the drive surface of the elastomeric drive lug is a first drive surface of the elastomeric drive lug; the drive surface of the drive member is a first drive surface of the drive member; the elastomeric drive lug comprises a second drive surface opposite to the first drive surface of the elastomeric drive lug and configured to contact the drive member when the elastomeric drive lug engages the drive member as the endless track is moved in a reverse direction opposite to that in which the first drive surface of the elastomeric drive lug contacts the first drive surface of the drive member; the drive member comprises a second drive surface opposite to the first drive surface of the drive member and configured to contact the second drive surface of the elastomeric drive lug when the elastomeric drive lug engages the drive member as the endless track is moved in the reverse direction; the second drive surface of the drive member is uneven in the direction parallel to the axis of rotation of the drive wheel such that the second drive surface of the drive member comprises a recessed portion; and the second drive surface of the elastomeric drive lug is uneven in the widthwise direction of the endless track such that the second drive surface of the elastomeric drive lug projects towards and is received in the recessed portion of the second drive surface of the drive member when the elastomeric drive lug engages the drive member as the endless track is moved in the reverse direction. 18. The endless track of claim 1, wherein the drive surface of the elastomeric drive lug is nonparallel to the widthwise direction of the endless track over at least a majority of an extent of the elastomeric drive lug in the widthwise direction of the endless track. 19. The endless track of claim 18, wherein the drive surface of the elastomeric drive lug is nonparallel to the widthwise direction of the endless track over substantially an entirety of the extent of the elastomeric drive lug in the widthwise direction of the endless track. 20. An endless track for traction of an off-road vehicle, the endless track being mountable around a plurality of wheels that comprises a drive wheel for driving the endless track, the drive wheel comprising a plurality of drive members spaced apart from one another, the endless track comprising: an elastomeric belt-shaped body comprising an inner surface for facing the wheels and a ground-engaging outer surface for engaging the ground; anda plurality of elastomeric drive lugs projecting from the inner surface and configured to engage the drive wheel, each elastomeric drive lug of the plurality of elastomeric drive lugs comprising a drive surface configured to contact a drive member of the plurality of drive members when the elastomeric drive lug engages the drive member, the drive member comprising a drive surface configured to contact the drive surface of the elastomeric drive lug when the elastomeric drive lug engages the drive member, the drive surface of the drive member being uneven in a direction parallel to an axis of rotation of the drive wheel and forming a recess of the drive member, the drive surface of the elastomeric drive lug being uneven in a widthwise direction of the endless track and forming a protrusion of the elastomeric drive lug, the protrusion of the elastomeric drive lug extending towards and contacting the recess of the drive member when the elastomeric drive lug engages the drive member. 21. The endless track of claim 20, wherein the drive surface of the elastomeric drive lug defines an oblique angle relative to the widthwise direction of the endless track. 22. The endless track of claim 21, wherein the oblique angle is at least 0.5°. 23. The endless track of claim 21, wherein the oblique angle is at least 1°. 24. The endless track of claim 21, wherein the oblique angle is at least 2°. 25. The endless track of claim 21, wherein the oblique angle is at least 5°. 26. The endless track of claim 20, wherein the drive surface of the drive member defines a draft angle used in manufacturing the drive wheel, the protrusion of the elastomeric drive lug being configured to accommodate the draft angle defined by the drive member. 27. The endless track of claim 20, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.5 and 1.5. 28. The endless track of claim 20, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.8 and 1.2. 29. The endless track of claim 20, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the elastomeric drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the elastomeric drive lug and the oblique angle defined by the drive surface of the drive member is between 0.9 and 1.1. 30. The endless track of claim 20, wherein the drive surface of the elastomeric drive lug is curved. 31. The endless track of claim 20, wherein a contact area of the elastomeric drive lug for contacting the drive member is greater than if the drive surface of the elastomeric drive lug was substantially flat but the elastomeric drive lug was otherwise identical. 32. A method of making an endless track for traction of an off-road vehicle, the endless track being mountable around a plurality of wheels that comprises a drive wheel for driving the endless track, the drive wheel comprising a plurality of drive members spaced apart from one another, the method comprising: forming an elastomeric belt-shaped body of the endless track, the elastomeric belt-shaped body comprising an inner surface for facing the wheels and a ground-engaging outer surface for engaging the ground; andforming a plurality of elastomeric drive lugs of the endless track which project from the inner surface, each elastomeric drive lug of the plurality of elastomeric drive lugs comprising a drive surface configured to contact a drive member of the plurality of drive members when the elastomeric drive lug engages the drive member, the drive member comprising a drive surface the drive surface of the elastomeric drive lug when the elastomeric drive lug engages the drive member, the drive surface of the drive member being uneven in a direction parallel to an axis of rotation of the drive wheel such that the drive surface of the drive member comprises a recessed portion, the drive surface of the elastomeric drive lug being uneven in a widthwise direction of the endless track such that the drive surface of the elastomeric drive lug projects towards and is received in the recessed portion of the drive surface of the drive member when the elastomeric drive lug engages the drive member. 33. A track assembly for traction of an off-road vehicle, the track assembly comprising: a plurality of wheels; anda track disposed about the wheels, the track comprising an inner surface for facing the wheels and a ground-engaging outer surface for engaging the ground;wherein: the plurality of wheels comprises a drive wheel for driving the track; the drive wheel comprises a plurality of drive members spaced apart from one another; the track comprises a plurality of drive lugs projecting from the inner surface and configured to engage the drive wheel; each drive lug of the plurality of drive lugs comprises a drive surface configured to contact a drive member of the plurality of drive members when the drive lug engages the drive member; the drive member comprises a drive surface configured to contact the drive surface of the drive lug when the drive lug engages the drive member; the drive surface of the drive member is uneven in a direction parallel to an axis of rotation of the drive wheel such that the drive surface of the drive member comprises a recessed portion; and the drive surface of the drive lug is uneven in a widthwise direction of the track such that the drive surface of the drive lug projects towards and is received in the recessed portion of the drive surface of the drive member when the drive lug engages the drive member. 34. The track assembly of claim 33 wherein the drive surface of the drive lug defines an oblique angle relative to the widthwise direction of the track. 35. The track assembly of claim 34, wherein the oblique angle is at least 0.5°. 36. The track assembly of claim 34, wherein the oblique angle is at least 1°. 37. The track assembly of claim 34, wherein the oblique angle is at least 2°. 38. The track assembly of claim 34, wherein the oblique angle is at least 5°. 39. The track assembly of claim 33, wherein the drive surface of the drive member defines a draft angle used in manufacturing the drive wheel, the drive surface of the drive lug being configured to accommodate the draft angle defined by the drive member. 40. The track assembly of claim 33, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.5 and 1.5. 41. The track assembly of claim 33, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.8 and 1.2. 42. The track assembly of claim 33, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.9 and 1.1. 43. The track assembly of claim 33, wherein the drive surface of the drive lug is curved. 44. The track assembly of claim 33, wherein a contact area of the drive lug for contacting the drive member is greater than if the drive surface of the drive lug was substantially flat but the drive lug was otherwise identical. 45. The track assembly of claim 33, wherein an apex of the drive surface of the drive lug is located in a central region of the drive lug in the widthwise direction of the track. 46. The track assembly of claim 45, wherein the apex of the drive surface of the drive lug is located substantially at a midpoint of the drive lug in the widthwise direction of the track. 47. The track assembly of claim 33, wherein the drive surface of the drive lug comprises an angular part that is received in the recessed portion of the drive surface of the drive member when the drive lug engages the drive member. 48. The track assembly of claim 33, wherein the drive surface of the drive lug comprises a curved part that is received in the recessed portion of the drive surface of the drive member when the drive lug engages the drive member. 49. The track assembly of claim 33, wherein: the drive surface of the drive lug is a first drive surface of the drive lug; the drive surface of the drive member is a first drive surface of the drive member; the drive lug comprises a second drive surface opposite to the first drive surface of the drive lug and configured to contact the drive member when the drive lug engages the drive member as the track is moved in a reverse direction opposite to that in which the first drive surface of the drive lug contacts the first drive surface of the drive member; the drive member comprises a second drive surface opposite to the first drive surface of the drive member and configured to contact the second drive surface of the drive lug when the drive lug engages the drive member as the track is moved in the reverse direction; the second drive surface of the drive member is uneven in the direction parallel to the axis of rotation of the drive wheel such that the second drive surface of the drive member comprises a recessed portion; and the second drive surface of the drive lug is uneven in the widthwise direction of the track such that the second drive surface projects towards and is received in the recessed portion of the second drive surface of the drive member when the drive lug engages the drive member as the track is moved in the reverse direction. 50. The track assembly of claim 33, wherein the drive surface of the drive lug is nonparallel to the widthwise direction of the track over at least a majority of an extent of the drive lug in the widthwise direction of the track. 51. The track assembly of claim 50, wherein the drive surface of the drive lug is nonparallel to the widthwise direction of the track over substantially an entirety of the extent of the drive lug in the widthwise direction of the track. 52. A track for traction of a vehicle, the track being mountable around a plurality of wheels that comprises a drive wheel for driving the track, the drive wheel comprising a plurality of drive members spaced apart from one another, the track being elastomeric to flex about the wheels, the track comprising: an inner surface for facing the wheels;a ground-engaging outer surface for engaging the ground; anda plurality of drive lugs projecting from the inner surface and configured to engage the drive wheel, each drive lug of the plurality of drive lugs comprising a drive surface configured to contact a drive member of the plurality of drive members when the drive lug engages the drive member, the drive member comprising a drive surface configured to contact the drive surface of the drive lug when the drive lug engages the drive member; the drive surface of the drive lug being uneven in a widthwise direction of the track such that the drive surface of the drive lug comprises:a first lateral portion;a second lateral portion; andan intermediate portion that is between the first lateral portion and the second lateral portion of the drive surface of the drive lug in the widthwise direction of the track and projects in a longitudinal direction of the track relative to the first lateral portion and the second lateral portion of the drive surface of the drive lug. 53. The track of claim 52, wherein the drive surface of the drive lug defines an oblique angle relative to the widthwise direction of the track. 54. The track of claim 53, wherein the oblique angle is at least 0.5°. 55. The track of claim 53, wherein the oblique angle is at least 1°. 56. The track of claim 53, wherein the oblique angle is at least 2°. 57. The track of claim 53, wherein the oblique angle is at least 5°. 58. The track of claim 52, wherein the drive surface of the drive member defines a draft angle used in manufacturing the drive wheel and the intermediate portion of the drive surface of the drive lug is configured to fit within the draft angle defined by the drive member. 59. The track of claim 52, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.5 and 1.5. 60. The track of claim 52, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.8 and 1.2. 61. The track of claim 52, wherein the drive surface of the drive member defines an oblique angle, the drive surface of the drive lug defines an oblique angle, and a ratio of the oblique angle defined by the drive surface of the drive lug and the oblique angle defined by the drive surface of the drive member is between 0.9 and 1.1. 62. The track of claim 52, wherein the drive surface of the drive lug is curved. 63. The track of claim 52, wherein an apex of the intermediate portion of the drive surface of the drive lug is located in a central region of the drive lug in the widthwise direction of the track. 64. The track of claim 63, wherein the apex of the intermediate portion of the drive surface of the drive lug is located substantially at a midpoint of the drive lug in the widthwise direction of the track. 65. The track of claim 52, wherein the drive surface of the drive member is uneven in a direction parallel to an axis of rotation of the drive wheel such that the drive surface of the drive member comprises a recessed portion, the intermediate portion of the drive surface of the drive lug being configured to be received in the recessed portion of the drive surface of the drive member when the drive lug engages the drive member. 66. The track of claim 52, wherein the drive surface of the drive lug is nonparallel to the widthwise direction of the track over at least a majority of an extent of the drive lug in the widthwise direction of the track. 67. The track of claim 66, wherein the drive surface of the drive lug is nonparallel to the widthwise direction of the track over substantially an entirety of the extent of the drive lug in the widthwise direction of the track.

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IPC 상세정보(version : 201201)

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