Torque converter and hydrokinetic torque coupling device having turbine-piston lockup clutch with lockup resistance member
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16H-045/02
F16H-045/00
출원번호
US-0522372
(2014-10-23)
등록번호
US-9845855
(2017-12-19)
발명자
/ 주소
Depraete, Alexandre
출원인 / 주소
Valeo Embrayages
대리인 / 주소
Berenato & White, LLC
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
A torque converter includes an impeller, a turbine-piston hydrodynamically drivable by the impeller, and an annular lockup resistance member. The impeller includes an impeller shell. The turbine-piston includes a turbine-piston shell having a turbine-piston flange with a first flange surface facing
A torque converter includes an impeller, a turbine-piston hydrodynamically drivable by the impeller, and an annular lockup resistance member. The impeller includes an impeller shell. The turbine-piston includes a turbine-piston shell having a turbine-piston flange with a first flange surface facing an engagement surface of the impeller shell and an opposite second flange surface. The turbine-piston is movable axially toward and away from the engagement surface to position the torque converter into and out of a lockup mode in which the turbine-piston flange is mechanically locked to the impeller shell. The annular lockup resistance member is coaxially aligned with the rotational axis, fixedly connected and non-rotatable relative to the turbine-piston flange, and configured to resist axial movement of the turbine-piston flange toward the engagement surface and into lockup with the impeller shell.
대표청구항▼
1. A torque converter comprising: an impeller rotatable about a rotational axis and comprising an impeller shell having an engagement surface;a turbine-piston coaxially aligned with and hydrodynamically drivable by the impeller, the turbine-piston comprising a turbine-piston shell including a turbin
1. A torque converter comprising: an impeller rotatable about a rotational axis and comprising an impeller shell having an engagement surface;a turbine-piston coaxially aligned with and hydrodynamically drivable by the impeller, the turbine-piston comprising a turbine-piston shell including a turbine-piston flange having a first flange surface facing the engagement surface and an opposite second flange surface, the turbine-piston being movable axially toward and away from the engagement surface to position the torque converter into and out of a lockup mode in which the turbine-piston is mechanically locked to the impeller shell so as to be non-rotatable relative to the impeller shell; andan annular lockup resistance member coaxially aligned with the rotational axis and fixedly connected to so as to be non-rotatable relative to the turbine-piston flange, and configured to resist axial movement of the turbine-piston flange toward the engagement surface and into lockup with the impeller shell. 2. The torque converter of claim 1, wherein the annular lockup resistance member has first end fixed to and non-rotatable relative to the second flange surface and a second end circumferentially slidingly engaging and rotatable relative to the impeller shell when the torque converter is out of the lockup mode. 3. The torque converter of claim 1, wherein the annular lockup resistance member has a radially inner portion fixed to and non-rotatable relative to the second flange surface and a radially outer portion circumferentially slidingly engaging and rotatable relative to the impeller shell when the torque converter is out of the lockup mode. 4. The torque converter of claim 3, wherein the radially outer portion of the annular lockup resistance member circumferentially slidingly engages and is rotatable relative to the impeller shell radially outside of the turbine-piston flange. 5. The torque converter of claim 1, wherein annular lockup resistance member is fixedly connected to and non-rotatable relative to the second flange surface. 6. The torque converter of claim 1, wherein the lockup resistance member comprises an annular spring washer coaxial with the rotational axis and an annular retaining member interconnecting the annular spring washer to the turbine-piston. 7. The torque converter of claim 6, wherein the annular spring washer has a radially inner end portion axially retained relative to the turbine-piston by the retaining member, and a radially outer end portion configured to circumferentially slidingly engage radially-extending inner peripheral surface of the impeller shell when the torque converter is out of the lockup mode. 8. The torque converter of claim 7, wherein the radially outer end portion of the annular spring washer is configured to circumferentially slidingly engage the radially-extending inner peripheral surface of the impeller shell radially outside of the turbine-piston flange when the torque converter is out of the lockup mode. 9. The torque converter of claim 7, wherein the retainer member has a radially inner end connected to and non-movable relative to the turbine-piston flange. 10. The torque converter of claim 1, wherein the lockup resistance member comprises a plurality of annular spring washers coaxial with the rotational axis and an annular retaining member interconnecting the spring washers to the turbine-piston. 11. The torque converter of claim 10, wherein the annular spring washers have radially outer end portions configured to circumferentially slidingly engage a radially-extending inner peripheral surface of the impeller shell when the torque converter is out of the lockup mode. 12. The torque converter of claim 11, wherein the radially outer end portions of the spring washers are configured to circumferentially slidingly engage the radially-extending inner peripheral surface of the impeller shell radially outside of the turbine-piston flange when the torque converter is out of the lockup mode. 13. The torque converter of claim 11, wherein the retainer member has a radially inner end connected to and non-movable relative to the turbine-piston flange. 14. A hydrokinetic torque coupling device for coupling together a driving shaft and a driven shaft, the hydrokinetic torque coupling device being rotatable about a rotational axis and comprising: a casing comprising an impeller shell and a casing shell connected to and non-rotatable relative to the impeller shell, the casing being rotatable about the rotational axis and having an engagement surface; anda torque converter coaxially aligned with and rotatable about the rotational axis, the torque converter comprising: an impeller comprising the impeller shell;a turbine-piston hydrodynamically drivable by the impeller and comprising a turbine-piston shell including a turbine-piston flange having a first flange surface facing the engagement surface and an opposite second flange surface, the turbine-piston shell being movable axially toward and away from the engagement surface to position the hydrokinetic torque coupling device into and out of a lockup mode in which the turbine-piston is mechanically locked to the casing so as to be non-rotatable relative to the casing; andan annular lockup resistance member coaxially aligned with the rotational axis and fixedly connected to so as to be non-rotatable relative to the turbine-piston flange to resist axial movement of the turbine-piston flange toward the engagement surface and into lockup with the casing. 15. The hydrokinetic torque coupling device of claim 14, further comprising: an output hub; and a torsional vibration damper interconnecting the turbine-piston and the output hub. 16. The hydrokinetic torque coupling device of claim 15, further comprising a drive member non-movably connected to the turbine-piston shell and connecting the turbine-piston shell to the torsional vibration damper, the torsional vibration damper further comprising a driven member operatively coupled to the output hub, and wherein the drive member is axially movable relative to the driven member of the torsional vibration damper. 17. The hydrokinetic torque coupling device of claim 15, further comprising a drive member interconnecting the turbine-piston shell to the torsional vibration damper, wherein the torsional vibration damper comprises an intermediate member, a first set of circumferentially extending elastic damping members drivingly coupling the drive member to the intermediate member, a driven member connected to and non-rotatable relative to the output hub, a second set of circumferentially extending elastic damping members drivingly coupling the intermediate member to the driven member, and a centrifugal pendulum oscillator mounted to the intermediate member. 18. The hydrokinetic torque coupling device of claim 15, further comprising a drive member interconnecting the turbine-piston shell to the torsional vibration damper, wherein the torsional vibration damper comprises an intermediate member, a first set of circumferentially extending elastic damping members drivingly coupling the drive member to the intermediate member, a driven member connected to and non-rotatable relative to the output hub, a second set of circumferentially extending elastic damping members drivingly coupling the intermediate member to the driven member, and a spring mass system coupled to the intermediate member. 19. The hydrokinetic torque coupling device of claim 14, wherein the turbine-piston shell and the turbine-piston flange are axially movable towards an output side of the hydrokinetic torque coupling device in order to frictionally couple the engagement surface and the first flange surface for positioning the turbine-piston in the lockup mode, and wherein the turbine-piston shell and the turbine-piston flange are axially movable towards an input side of the hydrokinetic torque coupling device so that the engagement surface and the first flange surface are not frictionally coupled and the turbine-piston is out of the lockup mode. 20. A method of assembling a hydrokinetic torque coupling device for coupling a driving shaft and a driven shaft together, comprising: providing a torque converter rotatable about a rotational axis, the torque converter comprising: an impeller comprising the impeller shell having an engagement surface;a turbine-piston hydrodynamically drivable by the impeller and comprising a turbine-piston shell comprising a turbine-piston flange having a first flange surface facing the engagement surface and an opposite second flange surface, the turbine-piston shell being movable axially toward and away from the engagement surface to position the torque converter into and out of a lockup mode in which the turbine-piston flange is mechanically locked to the impeller shell so as to be non-rotatable relative to the impeller shell; andan annular lockup resistance member coaxially aligned with the rotational axis, fixedly connected to so as to be non-rotatable relative to the turbine-piston flange, and configured to resist axial movement of the turbine-piston flange toward the engagement surface and into lockup with the impeller shell; andoperatively connecting a casing shell to the impeller shell of the torque converter to form a casing that is rotatable about the rotational axis.
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