Lawn care vehicle with rear wheel steering assembly
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B62D-007/16
A01D-034/00
F16C-001/00
A01D-034/66
A01D-034/82
A01D-034/64
B62D-009/00
B62D-065/00
F16C-001/10
B62D-001/16
B62D-003/02
출원번호
US-0515738
(2014-10-16)
등록번호
US-9650070
(2017-05-16)
발명자
/ 주소
Stark, Urban
출원인 / 주소
HUSQVARNA AB
대리인 / 주소
Nelson Mullins Riley & Scarborough LLP
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
A riding lawn care vehicle may include a frame and a steering assembly. Wheels of the riding lawn care vehicle may be attachable to the frame. The steering assembly may include a steering wheel operably coupled to rear wheels of the riding lawn care vehicle via a cable system. The cable system may i
A riding lawn care vehicle may include a frame and a steering assembly. Wheels of the riding lawn care vehicle may be attachable to the frame. The steering assembly may include a steering wheel operably coupled to rear wheels of the riding lawn care vehicle via a cable system. The cable system may include a first cable portion, a second cable portion and a pulley assembly. The first and second cable portions may each contact a steering column pulley at respective first ends of the first and second cable portions. The steering column pulley may be configured to pull a corresponding one of the first cable portion or the second cable portion based on a direction of rotation of the steering wheel. The first and second cable portions may each be in operable communication with a steering disc at respective second ends of the first and second cable portions. The steering disc may provide translation of movement of the first cable portion and the second cable portion into corresponding movement of the rear wheels. The pulley assembly may be configured such that each pulley of the pulley assembly handles both the first cable portion and the second cable portion as the first cable portion and the second cable portion are conveyed from the steering column pulley to the steering disc to translate motion of the steering column pulley to the steering disc.
대표청구항▼
1. A riding lawn care vehicle comprising: a frame to which wheels of the riding lawn care vehicle are operably coupled; anda steering assembly comprising a steering wheel operably coupled to rear wheels of the riding lawn care vehicle via a cable system,wherein the cable system comprises: a first ca
1. A riding lawn care vehicle comprising: a frame to which wheels of the riding lawn care vehicle are operably coupled; anda steering assembly comprising a steering wheel operably coupled to rear wheels of the riding lawn care vehicle via a cable system,wherein the cable system comprises: a first cable portion and a second cable portion, the first cable portion comprising a first end of the first cable portion and a second end of the first cable portion, the second cable portion comprising a first end of the second cable portion and a second end of the second cable portion, the respective first ends of the first and second cable portions being operably coupled to a steering column pulley, the steering column pulley being configured to pull a corresponding one of the first cable portion or the second cable portion based on a direction of rotation of the steering wheel, the respective second ends of the first and second cable portions being operably coupled to a steering disc, the steering disc being configured to provide translation of movement of the first cable portion and the second cable portion into corresponding movement of the rear wheels, anda pulley assembly comprising a first pulley and a second pulley in which each of the first pulley and the second pulley of the pulley assembly handles both the first cable portion and the second cable portion as the first cable portion and the second cable portion are conveyed rearward toward the steering disc to translate motion of the steering column pulley to the steering disc,wherein the pulley assembly is configured such that the first pulley and the second pulley of the pulley assembly are disposed along a same side of the riding lawn care vehicle. 2. The riding lawn care vehicle of claim 1, wherein the pulley assembly is configured such that the first and second cable portions each contact the first pulley and the second pulley on an opposite side of the first pulley and the second pulley relative to a longitudinal centerline of the riding lawn care vehicle. 3. The riding lawn care vehicle of claim 2, wherein the first pulley comprises a front pulley receiving the first cable portion and the second cable portion extending from the steering column pulley, and the second pulley comprises a back pulley providing the first cable portion and the second cable portion toward the steering disc. 4. The riding lawn care vehicle of claim 3, wherein the front pulley and the back pulley are each double pulleys comprising two independently rotatable wheels, and wherein one of the two independently rotatable wheels receives the first cable portion and the other of the two independently rotatable wheels receives the second cable portion. 5. The riding lawn care vehicle of claim 3, wherein an axis of rotation of the front pulley, an axis of rotation of the back pulley, and an axis of rotation of the steering column pulley are each oriented differently to convey the first and second cable portions from the steering column pulley toward the steering disc while crossing the first and second cable portions such that the first cable portion is operably coupled to a first side of the steering column pulley that is opposite, relative to the centerline of the riding lawn care vehicle, of a first side of the steering disc to which the first cable portion is operably coupled, and the second cable portion is operably coupled to a second side of the steering column pulley that is opposite, relative to the centerline, of a second side of the steering disc to which the second cable portion is operably coupled. 6. The riding lawn care vehicle of claim 1, wherein a length of the first cable portion is equal to a length of the second cable portion when the steering wheel is in a neutral position. 7. The riding lawn care vehicle of claim 1, wherein the steering disc is rotatably disposed substantially between the rear wheels, and wherein a first tie rod operably couples the steering disc to a first one of the rear wheels and a second tie rod operably couples the steering disc to a second one of the rear wheels. 8. The riding lawn care vehicle of claim 7, further comprising an axle mount fixed relative to the frame, the axle mount being disposed to extend between the rear wheels proximate to the steering disc, wherein the axle mount comprises a first sleeve and a second sleeve disposed at opposite distal ends of the axle mount, the first and second sleeves receiving respective portions of a first axle rod and a second axle rod rotatably mounted therein. 9. The riding lawn care vehicle of claim 8, further comprising a first steering knuckle disposed on the first axle rod and connected to the first tie rod to cause rotation of the first axle rod within the first sleeve responsive to movement of the first tie rod when the steering disc rotates, and a second steering knuckle disposed on the second axle rod and connected to the second tie rod to cause rotation of the second axle rod within the second sleeve responsive to movement of the second tie rod when the steering disc rotates. 10. The riding lawn care vehicle of claim 9, wherein the first and second tie rods are operably coupled to the steering disc at a location proximate to each other. 11. The riding lawn care vehicle of claim 1, wherein the steering column pulley comprises a gear operably coupled to the respective first ends of the first and second cable portions. 12. The riding lawn care vehicle of claim 1, wherein the first pulley and the second pulley of the pulley assembly are disposed along a right side of the riding lawn care vehicle. 13. A cable system for providing operable coupling between a steering wheel of a riding lawn care vehicle and rear wheels of the riding lawn care vehicle, the cable system comprising: a first cable portion and a second cable portion, the first cable portion comprising a first end of the first cable portion and a second end of the first cable portion, the second cable portion comprising a first end of the second cable portion and a second end of the second cable portion, the respective first ends of the first and second cable portions being operably coupled to a steering column pulley, the steering column pulley being configured to pull a corresponding one of the first cable portion or the second cable portion based on a direction of rotation of the steering wheel, the respective second ends of the first and second cable portions being operably coupled to a steering disc, the steering disc being configured to provide translation of movement of the first cable portion and the second cable portion into corresponding movement of the rear wheels, anda pulley assembly comprising a first pulley and a second pulley in which each of the first pulley and the second pulley of the pulley assembly handles both the first cable portion and the second cable portion as the first cable portion and the second cable portion are conveyed rearward toward the steering disc to translate motion of the steering column pulley to the steering disc,wherein the pulley assembly is configured such that the first pulley and the second pulley of the pulley assembly are disposed along a same side of the riding lawn care vehicle. 14. The cable system of claim 13, wherein the pulley assembly is configured such that the first and second cable portions each contact the first pulley and the second pulley on an opposite side of the first pulley and the second pulley relative to a longitudinal centerline of the riding lawn care vehicle, and wherein the first pulley comprises a front pulley receiving the first cable portion and the second cable portion extending from the steering column pulley, and the second pulley comprises a back pulley providing the first cable portion and the second cable portion toward the steering disc. 15. The cable system of claim 14, wherein the front pulley and the back pulley are each double pulleys comprising two independently rotatable wheels, and wherein one of the two independently rotatable wheels receives the first cable portion and the other of the two independently rotatable wheels receives the second cable portion. 16. The cable system of claim 14, wherein an axis of rotation of the front pulley, an axis of rotation of the back pulley, and an axis of rotation of the steering column pulley are each oriented differently to convey the first and second cable portions from the steering column pulley toward the steering disc while crossing the first and second cable portions such that the first cable portion is operably coupled to a first side of the steering column pulley that is opposite, relative to the centerline of the riding lawn care vehicle, of a first side of the steering disc to which the first cable portion is operably coupled, and the second cable portion is operably coupled to a second side of the steering column pulley that is opposite, relative to the centerline, of a second side of the steering disc to which the second cable portion is operably coupled. 17. The cable system of claim 13, wherein the steering column pulley comprises a gear operably coupled to the respective first ends of the first and second cable portions. 18. The cable system of claim 13, wherein the steering disc is rotatably disposed substantially between the rear wheels, and wherein a first tie rod operably couples the steering disc to a first one of the rear wheels and a second tie rod operably couples the steering disc to a second one of the rear wheels. 19. The cable system of claim 18, wherein the steering disc is mounted proximate to an axle mount fixed relative to a frame of the riding lawn care vehicle, the axle mount being disposed to extend between the rear wheels, wherein the axle mount comprises a first sleeve and a second sleeve disposed at opposite distal ends of the axle mount, the first and second sleeves receiving respective portions of a first axle rod and a second axle rod rotatably mounted therein. 20. A method of providing rear wheel steering for a riding lawn care vehicle, comprising: providing a steering assembly comprising a steering wheel operably coupled to rear wheels of the riding lawn care vehicle via a cable system, wherein the cable system comprises a first cable portion and a second cable portion, wherein the first cable portion comprises a first end of the first cable portion and a second end of the first cable portion, and wherein the second cable portion comprises a first end of the second cable portion and a second end of the second cable portion;operably coupling the respective first ends of the first and second cable portions to a steering column pulley, the steering column pulley being configured to pull a corresponding one of the first cable portion or the second cable portion based on a direction of rotation of the steering wheel;operably coupling the respective second ends of the first and second cable portions to a steering disc, the steering disc being configured to provide translation of movement of the first cable portion and the second cable portion into corresponding movement of the rear wheels; andproviding a pulley assembly comprising a first pulley and a second pulley in which each of the first pulley and the second pulley of the pulley assembly handles both the first cable portion and the second cable portion as the first cable portion and the second cable portion are conveyed rearward towards the steering disc to translate motion of the steering column pulley to the steering disc, the pulley assembly being configured such that the first pulley and the second pulley of the pulley assembly are disposed along a same side of the riding lawn care vehicle.
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이 특허에 인용된 특허 (8)
Mullett Paul W. (Hesston KS) Voth Elmer D. (Newton KS), 4-wheel coordinated steering multi-purpose tractor.
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