PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLE
First Claim
1. A planetary gear train of an automatic transmission for a vehicle, comprising:
- a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element;
a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element;
a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element;
a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element;
an input shaft mounted with the first, second, and third planetary gear sets at an external circumference of the input shaft;
an output shaft disposed in parallel with the input shaft and mounted with the fourth planetary gear set on an external circumference of the output shaft;
a first shaft connected with the first rotation element;
a second shaft connecting the second rotation element, the fifth rotation element, and the ninth rotation element;
a third shaft interconnecting the third rotation element and the fourth rotation element;
a fourth shaft connected with the sixth rotation element;
a fifth shaft connected with the seventh rotation element;
a sixth shaft connected with the eighth rotation element;
a seventh shaft connected with the tenth rotation element, and gear-meshed with one shaft among the fifth and sixth shafts;
an eighth shaft connected with the eleventh rotation element and directly connected with the output shaft;
a ninth shaft connected with the twelfth rotation element, and gear-meshed with a remaining shaft among the fifth and sixth shafts that is not gear-meshed with the seventh shaft; and
transfer gears, each gear-meshed with at least one of the first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth shafts.
1 Assignment
0 Petitions
Accused Products
Abstract
A planetary gear train of an automatic transmission for a vehicle including a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, an input shaft mounted with the first, second, and third planetary gear sets at an external circumference of the input shaft, an output shaft mounted with the fourth planetary gear set on an external circumference of the output shaft, a first shaft, a second shaft, a third shaft, a fourth shaft, a fifth shaft, a sixth shaft, a seventh shaft gear-meshed with one shaft among the fifth and sixth shafts, an eighth shaft directly connected with the output shaft, a ninth shaft gear-meshed with a remaining shaft among the fifth and sixth shafts that is not gear-meshed with the seventh shaft, and transfer gears.
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Citations
17 Claims
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1. A planetary gear train of an automatic transmission for a vehicle, comprising:
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a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element; a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element; a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element; a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element; an input shaft mounted with the first, second, and third planetary gear sets at an external circumference of the input shaft; an output shaft disposed in parallel with the input shaft and mounted with the fourth planetary gear set on an external circumference of the output shaft; a first shaft connected with the first rotation element; a second shaft connecting the second rotation element, the fifth rotation element, and the ninth rotation element; a third shaft interconnecting the third rotation element and the fourth rotation element; a fourth shaft connected with the sixth rotation element; a fifth shaft connected with the seventh rotation element; a sixth shaft connected with the eighth rotation element; a seventh shaft connected with the tenth rotation element, and gear-meshed with one shaft among the fifth and sixth shafts; an eighth shaft connected with the eleventh rotation element and directly connected with the output shaft; a ninth shaft connected with the twelfth rotation element, and gear-meshed with a remaining shaft among the fifth and sixth shafts that is not gear-meshed with the seventh shaft; and transfer gears, each gear-meshed with at least one of the first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth shafts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A planetary gear train of an automatic transmission for a vehicle, comprising:
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a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element; a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element; a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element; a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element; an input shaft mounted with the first, second, and third planetary gear sets at an external circumference of the input shaft; and an output shaft disposed in parallel with the input shaft and mounted with the fourth planetary gear set on an external circumference of the output shaft, wherein the first rotation element is selectively connectable with at least one of the input shaft and a transmission housing, the second, fifth, and ninth rotation elements are directly connected to each other, the third and fourth rotation elements are directly connected to each other and selectively connectable with the input shaft, the sixth rotation element is selectively connectable with the transmission housing, the seventh rotation element is gear-meshed with one rotation element among the tenth and twelfth rotation elements, and selectively acts as a fixed element, the eighth rotation element is gear-meshed with a remaining rotation element among the tenth and twelfth rotation elements, and selectively connectable with the input shaft, and the eleventh rotation element is directly connected with the output shaft. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification