Drive system with low speed, high torque drive mode and freewheel mode
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16H-003/44
F16H-048/30
B60K-017/04
출원번호
US-0574153
(2009-10-06)
등록번호
US-8292776
(2012-10-23)
발명자
/ 주소
Higman, Jerad
Sudbeck, Aaron
Dojan, Harold
출원인 / 주소
Masaba Mining Equipment, Inc.
대리인 / 주소
Proehl, Jeffrey A.
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
A drive system with drive and freewheel modes comprises a final transfer element for receiving and rotating with a drive axle, and a final drive assembly in rotational communication with a motor. The final drive assembly is selectively engageable with the final transfer element to drive an axle rece
A drive system with drive and freewheel modes comprises a final transfer element for receiving and rotating with a drive axle, and a final drive assembly in rotational communication with a motor. The final drive assembly is selectively engageable with the final transfer element to drive an axle received by the final transfer element. The final drive assembly has an engaged condition in which power is transferred through the final drive assembly to the drive axle and a disengaged condition in which power is not transferred through the final drive assembly. The final drive assembly comprises a gear set selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element. The gear set is selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set.
대표청구항▼
1. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being sel
1. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being selectively engageable with the final transfer element to drive a drive axle when the drive axle is received by the final transfer element, the final drive assembly having an engaged condition in which power is transferred through the final drive assembly to the final transfer element and a disengaged condition in which power is not transferred through the final drive assembly to the final transfer element;wherein the final drive assembly comprises a gear set positioned adjacent to the final transfer element, the gear set being selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element and the gear set being selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set;wherein at least one of the final drive assembly and the final transfer element is axially movable with respect to each other between the engaged condition and the disengaged condition. 2. The system of claim 1 wherein the disengaged condition of the final drive assembly is characterized by the final drive assembly being substantially rotationally stationary regardless of any rotation of the final transfer element or a drive axle connected to the final transfer element. 3. The system of claim 1 wherein the final transfer element is configured such that a drive axle is capable of passing through the final transfer element. 4. The system of claim 1 wherein the final drive assembly includes an intermediate transfer element configured to transfer rotation between gears in the gear set, the gear set being axially movable with respect to the intermediate transfer element. 5. The system of claim 1 wherein the gear set comprises: a first gear element for receiving rotational input from an input gear, the first gear element being engaged with an intermediate transfer element such that the intermediate transfer element turns with the final transfer element;a second gear element for receiving rotational input from the intermediate transfer element; anda carrier element rotated by the second gear element. 6. The system of claim 5 wherein the final transfer element includes a first interlock structure; wherein the carrier element includes a second interlock structure for selectively interlocking with the first interlock structure; andwherein the second interlock structure is movable into engagement with the first interlock structure to engage the gear set with the final transfer element and is movable out of engagement with the first interlock structure to disengage the gear set from the final transfer element. 7. The system of claim 1 wherein the final transfer element includes a first interlock structure and the gear set includes a second interlock structure for selectively interlocking with the first interlock structure; and wherein the second interlock structure is movable into engagement with the first interlock structure to engage the gear set with the final transfer element and is movable out of engagement with the first interlock structure to disengage the gear set from the final transfer element. 8. The system of claim 1 wherein the final drive assembly is configured to provide a rotational speed reduction and corresponding torque increase between an input gear and the final transfer element. 9. The system of claim 1 further comprising a preliminary drive assembly, the preliminary drive assembly transferring power from the motor to the final drive assembly, the preliminary drive assembly being configured to provide a rotational speed reduction and corresponding torque increase between the motor and the final drive assembly. 10. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being selectively engageable with the final transfer element to drive a drive axle when the drive axle is received by the final transfer element, the final drive assembly having an engaged condition in which power is transferred through the final drive assembly to the final transfer element and a disengaged condition in which power is not transferred through the final drive assembly to the final transfer element;wherein the final drive assembly comprises a gear set positioned adjacent to the final transfer element, the gear set being selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element and the gear set being selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set; andwherein the final transfer element extends through the gear set, the gear set being slidable on the final transfer element between an engaged position and a disengaged position. 11. The system of claim 10 wherein the final drive assembly is configured to provide a rotational speed reduction and corresponding torque increase between an input gear and the final transfer element. 12. The system of claim 10 further comprising a preliminary drive assembly, the preliminary drive assembly transferring power from the motor to the final drive assembly, the preliminary drive assembly being configured to provide a rotational speed reduction and corresponding torque increase between the motor and the final drive assembly. 13. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being selectively engageable with the final transfer element to drive a drive axle when the drive axle is received by the final transfer element, the final drive assembly having an engaged condition in which power is transferred through the final drive assembly to the final transfer element and a disengaged condition in which power is not transferred through the final drive assembly to the final transfer element;wherein the final drive assembly comprises a gear set positioned adjacent to the final transfer element, the gear set being selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element and the gear set being selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set;wherein the gear set is movable between an engaged position and a disengaged position, the engaged position being characterized by the gear set being engaged with the final transfer element and the disengaged position being characterized by the gear set being disengaged from the final transfer element; anda movement assembly configured to move the gear set between the engaged position and the disengaged position. 14. The system of claim 13 wherein the movement assembly includes: a shifting structure configured to contact the gear set to move the gear set; andan actuation structure configured to move the shifting structure between the engaged position and the disengaged position. 15. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being selectively engageable with the final transfer element to drive a drive axle when the drive axle is received by the final transfer element, the final drive assembly having an engaged condition in which power is transferred through the final drive assembly to the final transfer element and a disengaged condition in which power is not transferred through the final drive assembly to the final transfer element;wherein the final drive assembly comprises a gear set positioned adjacent to the final transfer element, the gear set being selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element and the gear set being selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set;wherein the final drive assembly includes an intermediate transfer element configured to transfer rotation between gears in the gear set, the gear set being movable with respect to the intermediate transfer element;wherein the final transfer element extends through the intermediate transfer element and the intermediate gear element extends through at least a portion of the gear set, the intermediate transfer element rotating freely with respect to the final transfer element, the gear set being slidable with respect to the intermediate transfer element in an axial direction of the intermediate transfer element. 16. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being selectively engageable with the final transfer element to drive a drive axle when the drive axle is received by the final transfer element, the final drive assembly having an engaged condition in which power is transferred through the final drive assembly to the final transfer element and a disengaged condition in which power is not transferred through the final drive assembly to the final transfer element;wherein the final drive assembly comprises a gear set positioned adjacent to the final transfer element, the gear set being selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element and the gear set being selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set; andwherein the final drive assembly further comprises an auxiliary transfer element, the auxiliary transfer element engaging at least a portion of the elements of the gear set, the auxiliary transfer element being rotationally stationary with respect to the gear set when the gear set is rotating the auxiliary transfer element being stationary when the gear set moves, the gear set remaining engaged with the auxiliary transfer element when the gear set moves between an engaged position and a disengaged position. 17. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being selectively engageable with the final transfer element to drive a drive axle when the drive axle is received by the final transfer element, the final drive assembly having an engaged condition in which power is transferred through the final drive assembly to the final transfer element and a disengaged condition in which power is not transferred through the final drive assembly to the final transfer element;wherein the final drive assembly comprises a gear set positioned adjacent to the final transfer element, the gear set being selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element and the gear set being selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set;wherein the gear set comprises: a first gear element for receiving rotational input from an input gear, the first gear element being engaged with an intermediate transfer element such that the intermediate transfer element turns with the final transfer element;a second gear element for receiving rotational input from the intermediate transfer element; anda carrier element rotated by the second gear element; andwherein the second gear element comprises a plurality of planet gears, each of the planet gears being engaged with the intermediate transfer element. 18. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being selectively engageable with the final transfer element to drive a drive axle when the drive axle is received by the final transfer element, the final drive assembly having an engaged condition in which power is transferred through the final drive assembly to the final transfer element and a disengaged condition in which power is not transferred through the final drive assembly to the final transfer element;wherein the final drive assembly comprises a gear set positioned adjacent to the final transfer element, the gear set being selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element and the gear set being selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set;wherein the gear set comprises: a first gear element for receiving rotational input from an input gear, the first gear element being engaged with an intermediate transfer element such that the intermediate transfer element turns with the final transfer element;a second gear element for receiving rotational input from the intermediate transfer element; anda carrier element rotated by the second gear element; andwherein the first gear element is movable as a part of the gear set with respect to the input gear such that movement of the first gear element shifts the location of a contact area between the first gear element and the input gear. 19. A drive system with a drive mode and freewheel mode, comprising: a motor configured to generate rotational movement;a final transfer element configured to receive and rotate with a drive axle; anda final drive assembly in rotational communication with the motor, the final drive assembly being selectively engageable with the final transfer element to drive a drive axle when the drive axle is received by the final transfer element, the final drive assembly having an engaged condition in which power is transferred through the final drive assembly to the final transfer element and a disengaged condition in which power is not transferred through the final drive assembly to the final transfer element;wherein the final drive assembly comprises a gear set positioned adjacent to the final transfer element, the gear set being selectively engagable with the final transfer element in the engaged condition such that rotation of the gear set is transferred to the final transfer element and the gear set being selectively disengageable from the final transfer element in the disengaged condition such that rotation of the final transfer element is not transferred to the gear set;wherein the gear set comprises: a first gear element for receiving rotational input from an input gear, the first gear element being engaged with an intermediate transfer element such that the intermediate transfer element turns with the final transfer element;a second gear element for receiving rotational input from the intermediate transfer element; anda carrier element rotated by the second gear element; andwherein the gear set further comprises a carrier ring at least partially supporting the second gear element, the carrier ring being positioned in an annular channel in the first gear element and being rotatable freely with respect to the first gear element.
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이 특허에 인용된 특허 (7)
Tanzer John H. (Troy MI), All-wheel drive free-wheel mechanism for a motor vehicle.
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