Patent ID: 9562591
Date: 2017-02-07
CPC Classifications: F16H

Claim:
1. An automatic transmission device for a vehicle comprising: a first planetary gear mechanism including a first element, a second element, and a third element; a second planetary gear mechanism including a first element, a second element, and a third element; a third planetary gear mechanism including a first element, a second element, and a third element; a fourth planetary gear mechanism including a first element, a second element, and a third element; an input shaft; an output shaft; six engaging elements including a first engaging element, a second engaging element, a first clutch, a second clutch, a third clutch and a brake; a first connection member selectively connecting the first element of the first planetary gear mechanism to a fixing member; a second connection member selectively connecting the second element of the first planetary gear mechanism to the third element of the second planetary gear mechanism; a third connection member selectively connecting the third element of the first planetary gear mechanism to the input shaft; a fourth connection member selectively connecting the first element of the second planetary gear mechanism to the first element of the third planetary gear mechanism; a fifth connection member selectively connecting the second element of the third planetary gear mechanism to the output shaft; a sixth connection member selectively connecting the third element of the third planetary gear mechanism to the fixing member; a seventh connection member selectively connecting the first element of the fourth planetary gear mechanism to the first element of the second planetary gear mechanism; an eighth connection member selectively connecting the second element of the fourth planetary gear mechanism to the input shaft; and a ninth connection member selectively connecting the third element of the fourth planetary gear mechanism to the output shaft; wherein the brake selectively connects the second element of the second planetary gear mechanism to the fixing member; the first clutch selectively connects the input shaft to the second element of the second planetary gear mechanism; the second clutch selectively engages two of the first element, the second element and the third element of the second planetary gear mechanism; the first engaging element is disposed at a first selected connection member that is selected among the first connection member, the second connection member, and the third connection member, and selectively engages the first selected connection member; the second engaging element is disposed at a second selected connection member that is selected among the fourth connection member, the fifth connection member and the sixth connection member, and selectively engages the second selected connection member; the third clutch is disposed at a third selected connection member that is selected among the seventh connection member, the eighth connection member, and the ninth connection member, and selectively engages the third selected connection member; one of the first connection member, the second connection member, and the third connection member is provided with the first engaging element, and the others of the first connection member, the second connection member, and the third connection member that are not provided with the first engaging element are in an engaged state; one of the fourth connection member, the fifth connection member, and the sixth connection member is provided with the second engaging element, and the others of the fourth connection member, the fifth connection member, and the sixth connection member that are not provided with the second engaging element are in an engaged state; one of the seventh connection member, the eighth connection member and the ninth connection member is provided with the third clutch, and the others of the seventh connection member, the eighth connection member, and the ninth connection member that are not provided with the third clutch are in an engaged state; and nine forward speeds and one reverse speed are provided by an engagement of three engaging elements of the six engaging elements.