Abstract: A damper device includes damper portions arranged in series with each other in a power transmission path and absorbing torsion by means of elastic force, hysteresis portions arranged in parallel with the damper portions at the power transmission path and absorbing the torsion by means of friction force, an input plate inputting rotational torque into one of the damper portion closest to the input side and the hysteresis portion closest to the input side, an intermediate plate transmitting the rotational torque from the damper portion, arranged at the input side, and the hysteresis portion, arranged at the input side, to the damper portions, arranged at the output side, and the hysteresis portions, arranged at the output side, and an output plate outputting the rotational torque from the damper portion closest to the output side and the hysteresis portion closest to the output side.

Abstract: A torque fluctuation absorber includes a first rotating member arranged to be rotatable, a second rotating member arranged in a rotatable manner relative to the first rotating member, a coil spring for buffering a torsion between the first rotating member and the second rotating member by means of an elastic force, and a cushion member arranged at an inside of the coil spring and buffering the torsion between the first rotating member and the second rotating member by means of an elastic force, wherein the cushion member includes an elastic member formed in a columnar shape, and an abrasion resistant member partly covering a side surface of the elastic member and including a greater abrasion resistance than an abrasion resistance of the elastic member.

Abstract: To provide a torque fluctuation absorbing apparatus capable of achieving cost reduction. The fluctuation absorbing apparatus includes a first plate secured to a flywheel; a second plate disposed at a distance from the first plate; a third plate slidably sandwiched between the first plate and the second plate; and a resilient section that is supported by, fixed to or integrated with the first plate or the second plate and biases the second plate toward the first plate.

Abstract: A damper device includes a damper portion and a limiter portion, and the limiter portion has a first constitutive member formed to cover the damper portion or the limiter portion, a first and second friction materials fixed to a second constitutive member of the damper portion, a cover plate provided so as to be slidable to the first friction material, a support plate arranged so as to be distant from the cover plate at a radially inner portion of the support plate and so as to contact the cover plate at a radially outer portion of the support plate, a pressure plate provided so as to be slidable to the second friction material and a coned disc spring provided between the support plate and the pressure plate, wherein the first constitutive member is at least one of the cover plate and the support plate.

Abstract: A torque fluctuation absorber includes a first plate member, ring-shaped second and third plate members, a fourth plate member, a resilient member and a predetermined member. The resilient member absorbs torque fluctuation between the second or third plate member and the fourth plate member. The predetermined member on a power transmission path between at least two of the first, second and third plate members has a stopper section. The stopper section allows relative rotation between the second or third plate member and the fourth plate member within a predetermined distance in the circumferential direction of the second plate member. The stopper section prevents relative rotation between the second or third plate member and the fourth plate member by contacting to the fourth plate member.

Abstract: A torque fluctuation absorbing apparatus for absorbing a torque fluctuation generated between an engine and a transmission includes a damper portion having a first plate member, a second plate member and a plurality of coil springs. The second plate member includes a first plate portion and a second plate portion to interpose therebetween the first plate member. The plurality of coil springs is provided between the first and second plate members. The plurality of coil springs is arranged to compress when the first and second plate members move relative to each other thereby absorbing a torque fluctuation generated by a difference between a rotation of the first plate member and a rotation of the second plate member. The first plate member is connected to an output shaft of the engine. The second plate member is connected to an input shaft of the transmission.

Abstract: A damper device includes a first plate member rotated when the rotational force is inputted from an input side, a second plate member rotatable relative to the first plate member and outputting the rotational force to an output side when rotated in response to rotation of the first plate member, a damper portion for absorbing relative rotation between the first plate member and the second plate member, and a hysteresis portion for absorbing the relative rotation by a friction force. The hysteresis portion includes an intermediate member between the first plate member and the second plate member, and the intermediate member is pressed against one of the first plate member and the second plate member by the other one of the first plate member and the second plate member when the first plate member and the second plate member rotate relative to each other.

Abstract: A torque fluctuation absorber includes a first rotary member formed into an annular shape and including a first protruding portion formed at an inner circumferential surface, a second rotary member connected to the first rotary member, a third rotary member including a second protruding portion formed at an outer circumferential surface, a damper portion absorbing torque fluctuations caused by torsion generated between the second rotary member and the third rotary member, and an elastic member arranged between the first protruding portion and the second protruding portion and absorbing a shock generated when the first protruding portion directly makes contact with the second protruding portion when the damper portion absorbs the torque fluctuations caused by the torsion generated between the second rotary member and the third rotary member.

Abstract: A torque fluctuation absorber includes a seating member having a pivoting portion at an inner portion in a radial direction and a supporting portion, which rotationally supports the pivoting portion, at an end surface in a circumferential direction of a first and a second opening portion. When no relative rotational torsion existing between a first and a second rotational member, the pivoting portion is in contact with the supporting portion and a clearance is defined between a portion on each seating member positioned outwardly in a radial direction relative to the pivoting portion and a portion of the first and the second opening portion positioned outwardly in a radial direction relative to the supporting portion. At a first torsion angle, the portion on each seating member contacts the portion of first or second opening portion in a state where the pivoting portion is in contact with the supporting portion.

Abstract: A damper device includes a damper unit arranged on a motive power transmission path between a motive power source and a gear mechanism and configured for absorbing torque fluctuations that might be generated by elastic force between the motive power source and the gear mechanism. The damper device also includes a limiter unit that produces slip when the torque fluctuations have exceeded a preset value. The limiter unit is arranged on a motive power transmission path between the damper unit and the gear mechanism.

Abstract: A torque fluctuation absorbing apparatus includes a first plate member, a second plate member rotatable relative to the first plate member, and a first friction member disposed between the first plate member and the second plate member and pressed against the first plate member in a slidable manner. The second plate member includes a first retaining surface that makes contact with the first friction member. The first friction member includes a plurality of grooves at a surface facing the first retaining surface of the second plate member, the grooves extending in a radial direction of the first friction member.

Abstract: A damper device includes a first side plate connected to a flywheel, to which a rotational force from a power source is transmitted, at an outer circumferential portion of the flywheel, a second side plate arranged at a position displaced in an axial direction relative to the first side plate and connected to the first side plate, a center plate member provided between the first side plate and the second side plate and outputting the rotational force towards a gear mechanism, and a spring member absorbing a torque fluctuation generated between the first side plate and the second side plate on the one hand and the center plate member on the other hand, wherein the center plate member is formed so that an outer diameter thereof is set to be greater than an outer diameter of each of the first side plate and the second side plate.

Abstract: A torque fluctuation absorbing apparatus provided between a driving source and a transmission and transmitting torque from the driving source to the transmission, the apparatus absorbing fluctuations in the torque and limiting a maximum value of the torque, the apparatus includes a flywheel, a supporting member, a first plate having a sliding surface, a second plate having a sliding surface, a disc spring supported by the supporting member and biasing one of the first and second plates towards the other one thereof, a friction material sandwiched tightly between the sliding surface of the first plate and the sliding surface of the second plate, a damper mechanism connected to the friction material and transmitting the torque from the driving source to an input shaft of the transmission, and a cover member demarcating the sliding surfaces of the first and second plates from an exterior of the torque fluctuation absorbing apparatus.

Abstract: A torque fluctuation absorbing apparatus including a limiter mechanism includes: a disc member connected to one of the driving-side member and the driven-side member, a first plate and a second plate connected to the other one of the driving-side member and the driven-side member; a frictional member fixed to the disc member and interposed between the first plate and the second plate, the frictional member including a frictional surface slidably in contact with the first and second plates. The frictional member includes a fibrous substrate and is formed with a plurality of grooves at the frictional surface. A minimum dimension between two adjacent grooves from among the plurality of grooves is designed to be greater than or equal to 2 mm and smaller than or equal to 7 mm.

Abstract: A torque fluctuation absorbing apparatus includes a hub member with a flange portion, first and second side-plates provided at both axial sides of the flange portion, respectively, a damper mechanism absorbing a fluctuation of a relative torque generated between the flange portion of the hub member and the first and second side-plates, a thrust member provided between the first side-plate and the flange portion of the hub member, and a first disc spring provided between the first side-plate and the thrust member and biasing the thrust member towards the flange portion of the hub member. The first side plate includes a bent portion bent towards the flange portion of the hub member and a bore formed at the bent portion, and the thrust member is formed with an engagement portion extending through the bore of the first side-plate and engaged with the bore of the first side-plate.

Abstract: The torque fluctuation absorber includes a flywheel fixed on a first rotating shaft by a fixation member, a damper unit connected with a second rotating shaft and absorbs fluctuation of torque occurred between the first rotating shaft and the second rotating shaft by elastic force, and a limiter unit provided on a power transmission path between the flywheel and the damper unit and inducing a slide when the fluctuation of the torque exceeded a predetermined value. A predetermined member rotates with the first rotating shaft on a power transmission path between the first rotating shaft and the limiter unit. The predetermined member has a side plate at the damper unit and a guide portion that prevents movement radially of a hub member, and the guide portion is provided at radially internal side of the fixation member.

Abstract: A torque fluctuation absorber includes a first plate member to which power of rotation is transmitted from a first rotational shaft, a second plate member arranged at a preset distance from the first plate member, a third plate member arranged between the first plate member and the second plate member and configured to transmit power of rotation to a second rotational shaft. The torque fluctuation absorber also includes a fourth plate member arranged at a preset distance from the second plate member, and a resilient member arranged between the second plate member and the fourth plate member and configured to bias the second plate member towards the third plate member. The fourth plate member includes a fulcrum point that supports a mid portion of the resilient member.

Abstract: A torque fluctuation absorber includes a first plate member, ring-shaped second and third plate members, a fourth plate member, a resilient member and a predetermined member. The resilient member absorbs torque fluctuation between the second or third plate member and the fourth plate member. The predetermined member on a power transmission path between at least two of the first, second and third plate members has a stopper section. The stopper section allows relative rotation between the second or third plate member and the fourth plate member within a predetermined distance in the circumferential direction of the second plate member. The stopper section prevents relative rotation between the second or third plate member and the fourth plate member by contacting to the fourth plate member.

Abstract: A torque fluctuation absorber includes: a first plate member, a second plate member, arranged axially with a predetermined distance from the first plate member, a third plate member which rotates integrally with the first plate member, and is arranged axially with a predetermined distance from the second plate member; slide members located between the second plate member and the third plate member; and an elastic member which is supported by the first plate member and biases the second plate member towards the plurality of slide members. The plurality of slide members are configured to generate a first hysteresis torque when a torsion angle between the second plate member and the third plate member is within a predetermined range, and to generate a second hysteresis torque greater than the first hysteresis torque when the torsion angle exceeds the predetermined range.

Abstract: A torque fluctuation absorber includes a first plate member, a second plate member biased towards the first plate member and rotatable relative to the first plate member, and a friction material arranged between the first and second plate members and pressed on the second plate member slidably along a direction of rotation of the second plate member. The friction material is engaged with the first plate member to prevent relative movement to the first plate member or to be movable relative movement to the first plate member a preset distance but to prevent further movement than the preset distance.