초록 ▼

A torsion damper (10) for damping vibration between the input member and output member of a hydrodynamic converter (12) includes a lock-up plate (30) which is axially moveable in response to differential hydraulic pressure thereacross to be directly coupled to or released from the input member; a va

A torsion damper (10) for damping vibration between the input member and output member of a hydrodynamic converter (12) includes a lock-up plate (30) which is axially moveable in response to differential hydraulic pressure thereacross to be directly coupled to or released from the input member; a variable volume liquid filled damping chamber (62) is connected to the inboard surface of the lock-up plate and is comprised of three separate, slidably supported rings (40) for forming part of the damping chamber. A cam ring (48) is directly connected to the output member and a stopper ring (42) is connected to the lock-up plate; a follower ring (50) includes cam followers that engage cam surfaces on the cam ring and further includes lock segments thereon that engage a spring diaphragm (60) which seals the damping chamber and which is shifted by the follower ring upon relative rotation between the input member and the output member to vary the volume of the variable volume chamber; the torsion damper includes orifices (68) and a relief valve (72) on the lock-up plate for controlling flow into and from the damping chamber to impose a vibration damping force between the input and output member partly in accordance with the size of the orifices; partly in accordance with the shape of the cam surface on the cam ring and partly in accordance with the spring rate of the spring diaphragm any one of which can be adjusted for tuning the torsional damping rates of the torsion damper.

대표청구항 ▼

A damping mechanism for damping engine vibrations in a vehicle drive train between an input member and an output member comprising: a hydraulic damping mechanism including an annular spring plate forming a wall portion of a liquid filled variable volume chamber for imposing a vibration damping force

A damping mechanism for damping engine vibrations in a vehicle drive train between an input member and an output member comprising: a hydraulic damping mechanism including an annular spring plate forming a wall portion of a liquid filled variable volume chamber for imposing a vibration damping force between said input member and said output member for damping engine vibrations between said input member and said output member; and fluid restriction means for controlling flow of liquid into and from said variable volume chamber in accordance with the rate of relative rotation between said input member and said output member so as to control the level of damping torque on a lockup plate in accordance with the relative movement between said input member and said output member.