IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0908346
(2001-07-18)
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발명자
/ 주소 |
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출원인 / 주소 |
- Visteon Global Technologies, Inc.
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대리인 / 주소 |
Brinks Hofer Gilson & Lione
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인용정보 |
피인용 횟수 :
3 인용 특허 :
53 |
초록
▼
A differential device for coupling an input shaft, a first output shaft, and a second output shaft is provided. The differential device preferably includes a differential case with a first side gear, a second side gear, a pinion gear, and a hydraulic conduit. The differential device preferably inclu
A differential device for coupling an input shaft, a first output shaft, and a second output shaft is provided. The differential device preferably includes a differential case with a first side gear, a second side gear, a pinion gear, and a hydraulic conduit. The differential device preferably includes a first rotary pump, which preferably functions to pump hydraulic fluid through the hydraulic conduit upon the relative rotational movement of the differential case and the first output shaft and to resist relative rotational movement of the differential case and the first output shaft upon a restriction of the transmittal of hydraulic fluid through the hydraulic conduit. The differential device also preferably includes a valve system, which functions to selectively restrict the transmittal of hydraulic fluid through the hydraulic conduit.
대표청구항
▼
A differential device for coupling an input shaft, a first output shaft, and a second output shaft is provided. The differential device preferably includes a differential case with a first side gear, a second side gear, a pinion gear, and a hydraulic conduit. The differential device preferably inclu
A differential device for coupling an input shaft, a first output shaft, and a second output shaft is provided. The differential device preferably includes a differential case with a first side gear, a second side gear, a pinion gear, and a hydraulic conduit. The differential device preferably includes a first rotary pump, which preferably functions to pump hydraulic fluid through the hydraulic conduit upon the relative rotational movement of the differential case and the first output shaft and to resist relative rotational movement of the differential case and the first output shaft upon a restriction of the transmittal of hydraulic fluid through the hydraulic conduit. The differential device also preferably includes a valve system, which functions to selectively restrict the transmittal of hydraulic fluid through the hydraulic conduit. d position to an engaged position, and a tension spring connecting said actuating lever to said interlock lever, said final drive comprising a gear having a plurality of jaws, said gear being fixed to an output shaft, said jaws being engageable by said locking lever. 6. A tracked vehicle as in claim 1 further comprising: a selector lever for changing gears in each said intermediate transmission, sensors for detecting the gear selected in each of the intermediate transmissions, and a control unit which chooses a predetermined gear-change program for the main transmission based on the gear selected in each of the intermediate transmissions. 7. A tracked vehicle according to claim 1 wherein each said lateral intermediate transmission comprises: a spur gear fixed to said input shaft, a hollow shaft having fixed thereto a spur gear which is driven by said spur gear on said input shaft, a selector element which is moveable between a first selector position and a second selector position, an epicyclic transmission comprising a sun gear fixed to said hollow shaft, a planet carrier fixed to an output shaft and carrying a plurality of planet gears, and an annulus in which said planet gears revolve when said selector element is in said first selector position, and a housing to which said annulus is rotationally fixed when said selector element is in said first selector position, wherein said output shaft rotates at a reduced speed with respect to said sun gear, and from which said annulus is released when said selector element is in said second selector position, wherein said sun gear is rotationally fixed with respect to said output shaft. 8. A tracked vehicle according to claim 7 wherein said input shaft is coaxial to said sun gear and said output shaft. 9. A tracked vehicle according to claim 7 wherein said final drive connects the output shaft to the track sprocket, said final drive comprising a sun gear fixed to the output shaft, a planet carrier carrying a plurality of planet gears which mesh with said sun gear, and an annulus in which said planet gears revolve, said annulus being fixed to said housing. 10. A tracked vehicle as in claim 7 wherein the output shaft can be connected directly to the track sprocket. ectional control valve coupled to said hydraulic conduit and adapted to selectively direct hydraulic fluid to said pressure relief valve. 2. The device of claim 1 wherein said differential case defines said hydraulic conduit. 3. The device of claim 1 wherein said first rotary pump includes a gerotor device. 4. The device of claim 1 further comprising a hydraulic unit coupled to said differential case and adapted to receive said directional control valve and said pressure relief valve. 5. The device of claim 1 further comprising an electric control unit coupled to said valve system and adapted to control said valve system. 6. The device of claim 5 wherein said electric control unit is further adapted to control said valve system upon the receipt of a slip detection signal. 7. A differential device for coupling an input shaft, a first output shaft, and a second output shaft, comprising: a differential case coupled to the input shaft; a first side gear located within said differential case and coupled to the first output shaft; a second side gear located within said differential case and coupled to the second output shaft; a pinion gear located within said differential case, coupled to said first side gear and said second side gear, and adapted to transfer relative rotational movement of said differential case and one of the first and second output shafts into relative rotational movement of said differential case and the other of the first and second output shafts; a hydraulic conduit coupled to said differential case and adapted to transmit a hydraulic fluid; a first rotary pump coupled to said differential case and the first output shaft and adapted to pump hydraulic fluid through said hydraulic conduit upon the relative rotational movement of said differential case and the first output shaft and to resist relative rotational movement of said differential case and the first output shaft upon a restriction of the transmittal of hydraulic fluid through said hydraulic conduit; a valve system coupled to said hydraulic conduit and adapted to selectively restrict the transmittal of hydraulic fluid through said hydraulic conduit, thereby selectively causing said first rotary pump to resist relative rotational movement of said differential case and the first output shaft; and a second rotary pump coupled to said differential case and the second output shaft and adapted to pump hydraulic fluid through said hydraulic conduit upon the relative rotational movement of said differential case and the second output shaft and to resist relative rotational movement of said differential case and the second output shaft upon a restriction of the transmittal of hydraulic fluid through said hydraulic conduit. 8. The device of claim 7 wherein said first rotary pump and said second rotary pump both include a gerotor device. 9. A method of coupling a differential device to an input shaft, a first output shaft, and a second output shaft, comprising: providing a differential case and coupling the differential case to the input shaft; providing a first side gear within the differential case and coupling the first side gear to the first output shaft; providing a second side gear within the differential case and coupling the second side gear to the second output shaft; providing a pinion gear located the differential case, coupling the pinion gear to the first side gear and the second side gear, and adapting the pinion gear to transfer relative rotational movement of the differential case and one of the first and second output shafts into relative rotational movement of the differential case and the other of the first and second output shafts; providing a hydraulic conduit, coupling the hydraulic to the differential case, and adapting the hydraulic conduit to transmit a hydraulic fluid; providing a first rotary pump, coupling the first rotary pump to the differential case and the first output shaft, and adapting the first rotary pump
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