TORSIONAL VIBRATION REDUCTION DEVICE FOR TORQUE CONVERTER

摘要

A torsional vibration reduction device for a torque converter includes rolling elements (46), a plate (50;108;128), and a cover (52;81;102;122). The plate (50;108;128) includes rolling chambers (48) that house the rolling elements (46). The cover (52;81;102;122) is configured to shield the rolling elements (46) and the plate (50;108;128) from a working fluid. A first cover (54;82;104;124) and a second cover (56;84;106;126) are joined together with the plate (50;108;128) held between the first cover (54;82;104;124) and the second cover (56;84;106;126). The first cover (54;82;104;124) and the second cover (56;84;106;126) are in contact with the plate (50;108;128) in an axial direction of the torque converter at parts that are, with respect to an axis of the torque converter, on an inner peripheral side and on an outer peripheral side from positions in the plate (50;108;128) at which the rolling elements (46) are housed. Surfaces of the first cover (54;82;104;124) and the second cover (56;84;106;126) in contact with the plate (50;108;128) are at least partially joined together.