US 9,810,301 B2
Torque converter in vehicle
Ki-Hyun Kwon, Daegu (KR); Gi-Woo Kim, Incheon (KR); and Soon-Seok Hong, Daegu (KR)
Assigned to Korea Powertrain Co., Ltd., Daegu (KR)
Appl. No. 14/408,615
Filed by Korea Powertrain Co., Ltd., Daegu (KR)
PCT Filed Apr. 9, 2013, PCT No. PCT/KR2013/002938
§ 371(c)(1), (2) Date Dec. 17, 2014,
PCT Pub. No. WO2014/084458, PCT Pub. Date Jun. 5, 2014.
Claims priority of application No. 10-2012-0136545 (KR), filed on Nov. 28, 2012.
Prior Publication US 2015/0260270 A1, Sep. 17, 2015
Int. Cl. F16H 45/02 (2006.01); F16F 15/14 (2006.01); F16F 15/131 (2006.01); F16F 15/123 (2006.01)
CPC F16H 45/02 (2013.01) [F16F 15/123 (2013.01); F16F 15/13128 (2013.01); F16F 15/1471 (2013.01); F16H 2045/0205 (2013.01); F16H 2045/0226 (2013.01); F16H 2045/0263 (2013.01); F16H 2045/0278 (2013.01); F16H 2045/0294 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A torque converter in a vehicle comprising:
a front cover;
an impeller connected to the front cover to rotate together with the front cover;
a turbine arranged at a position opposite to the impeller;
a reactor positioned between the impeller and the turbine for changing an oil flow from the turbine toward the impeller;
a lock-up clutch having a piston for directly connecting the front cover to the turbine; and
a torsional damper coupled to the lock-up clutch for absorbing an impact and vibration acting in a rotation direction,
wherein the torsional damper includes
a retaining plate coupled to the piston,
a plurality of springs arranged at the retaining plate for imparting elastic force in a circumferential direction,
a driven plate coupled to a spline hub which acts as a reaction force on the springs and forwards driving power to a transmission, and
an inertial lever arranged between the piston and the driven plate, the inertial lever including a fixed pivot coupling portion coupled to the piston with a fixed pivot and a movable pivot coupling portion coupled to the drivers plate with a movable pivot.