A lock-up device includes a clutch part and a damper part. The clutch part is disposed between a front cover and a turbine, and transmits or blocks torque. The damper part transmits torque from the clutch part to the turbine, and absorbs torsional vibration. The damper part includes input and output members, elastic members, and a support member. The input member is connected to the clutch part. The output member is connected to the turbine. The elastic members connect the input and output members. The support member has a connecting part, a regulating part, and a stopper part. The regulating part is provided such that the output member is interposed axially between the regulating part and part of the input member. The stopper part is configured to contact the output member and prohibit the input and output members from rotating relative to each other by a predetermined angle or more.

An isolated drive assembly that includes a drive member, which is rotatable about a rotational axis, a drive member hub, which is rotatable about the rotational axis relative to the drive member, an isolator assembly, which has an elastomeric element that transmits rotary power between the drive member and the drive member hub, and a torque limiter. The torque limiter has first and second sets of engagable limiter elements that limit rotation of the drive member relative to the drive member hub in opposite rotational directions to limit a magnitude of a moment that is transmitted through the elastomeric element.

Disclosed is a control method for an internal combustion engine (3) including a power generation motor (4) driven by a power of the internal combustion engine (3) and a damper (30) provided between the internal combustion engine (3) and the power generation motor (4) in a power transmission path, wherein a maximum value of a torque fluctuation generated in an event of a misfire occurring in a cylinder of the internal combustion engine (3) is larger than a value at which a displacement of a main damper (30a) of the damper (30) is allowed to be suppressed to be smaller than a displacement at which abutting occurs on a first stopper (31a) by a counter torque of the power generation motor (4), and the control method includes limiting a torque (Te) of the internal combustion engine (3) within a range in which a displacement of the main damper (30a) is allowed to be controlled to be smaller than a displacement at which abutting occurs on the first stopper (31a) by a counter torque of the power generation motor (4).

A rotary device includes two rotatable rotors and two stopper mechanisms. The first and second stopper mechanisms restrict relative rotation between the rotors. The first stopper mechanism includes a first protruding member and a first contact surface. The first protruding member includes an elastic outer peripheral part. The first contact surface is disposed at an interval from the first protruding member. The first protruding member contacts the first contact surface when a torsion angle between the rotors reaches a first angle. The second stopper mechanism includes a second protruding member and a second contact surface. The second protruding member includes an outer peripheral part having higher stifffiess than that of the first protruding member. The second contact surface is disposed at an interval from the second protruding member. The second protruding member contacts the second contact surface when the torsion angle reaches a second angle greater than the first angle.

A shock-absorbing twisting structure includes a first seat and a second seat. The first seat includes an elastic member. A stop member is arranged at one side of the first seat. The second seat is formed with a receiving chamber that is fit over the first seat, such that the elastic member is set in elastic engagement with and is supported between the first seat and the second seat. A main axle penetrates through the second seat and is received in the first seat to set the second seat in a rotatable condition. An elastic unit is arranged at each of two sides of the receiving chamber and the stop member.

An integrated gear and torsional vibration damper assembly (10, 20, 30, 30) includes a gear (11, 21, 31, 41) having a toothed portion (11a, 21a, 31a, 41a) and a torsional vibration damper (12, 22, 32, 42) supported on the gear (11, 21, 31, 41) for limited rotational and dampened movement relative to each other. The gear (11) may include a hub portion (11b), and the torsional vibration damper (12) may be supported on the hub portion (11b) of the gear (11). Alternatively, the gear (21) may include a hub portion (21b), an intermediate ring (23) may be supported on the hub portion (21b) of the gear (21), and the torsional vibration damper (22) may be supported on the intermediate ring (23). Alternatively, the gear (31) may include a toothed portion (31a) and a hub portion (31b) that extends radially inwardly from the toothed portion (31a) and has an opening (31c) extending therethrough, and the torsional vibration damper (32) may extend through the opening (31c). Alternatively, the gear (41) may include an inner circumferential surface that engages and supports an outer circumferential surface of the torsional vibration damper (41).

A damper device includes a first rotor, a second rotor, a plurality of elastic members and a stopper mechanism. The stopper mechanism includes a plurality of first cutouts, a plurality of second cutouts and a plurality of stop members. A pair of the first and second cutouts is provided on both circumferential sides of each of a plurality of accommodation portions of the second rotor so as to circumferentially extend therefrom. The stop members are fixed to the first rotor. Each stop member is circumferentially movable within the pair of the first and second cutouts. The second rotor includes a first protruding portion circumferentially protruding on one of a pair of pressing surfaces of each accommodation portion. Each of the first cutouts, which is a hole, extends at an end thereof located closer to each accommodation portion toward the first protruding portion.

A damper device includes a first rotor, a second rotor, a plurality of elastic members and a stopper mechanism. The stopper mechanism includes a first stopper hole, a second stopper hole and a plurality of stop members. The first and second stopper holes are provided on both circumferential sides of each of a plurality of first window holes of the second rotor so as to circumferentially extend therefrom. Each of the first and second stopper holes communicates at one end thereof with each first window hole and extends at the other end thereof to a position radially outside one of a plurality of second window holes of the second rotor. The stop members are fixed to the first rotor. Each stop member axially penetrates each of the first and second stopper holes and is circumferentially movable within each of the first and second stopper holes.

A spring seat installed in a damper device including a first rotor, a second rotor and a plurality of elastic members is disclosed. The spring seat includes an end surface support portion and an outer periphery support portion. The end surface support portion includes a recess on a radially middle part thereof. The recess is recessed toward at least one of the elastic members. The end surface support portion supports one end surface of the at least one of the elastic members. The end surface support portion is supported by a pressing surface of a first accommodation portion of the first rotor and a pressing surface of a second accommodation portion of the second rotor. The outer periphery support portion supports part of a radially outer part of the at least one of the elastic members.

A torque converter includes first and second dampers disposed in a torque transmission path during lockup, and a dynamic damper attached to the torque transmission path between the first and second dampers. The dynamic damper includes an inertial rotating body having a weight member mounted on an outer peripheral part of an inertia plate sandwiched between a pair of retaining plates, and an elastic member provided between the inertia plate and the retaining plates. A claw part is provided on one of the retaining plates disposed on a side opposite to the clutch constituent member with respect to the inertia plate. The first damper spring is sandwiched between the claw part and the clutch constituent member, and an elongated hole is formed in the inertia plate, the elongated hole extending lengthwise in a peripheral direction of the inertia plate while the claw part is inserted through the elongated hole.