Abstract: A power transmission device includes an input-side rotary part to which a torque is inputted from an engine, an output-side rotary part, and a damper part. The output-side rotary part includes a first rotor and a second rotor. The first rotor is configured to be rotatable relative to the input-side rotary part. The first rotor is configured to be rotatable unitarily with the input-side rotary part at greater than or equal to a predetermined relative rotational angle. The second rotor is configured to be rotatable unitarily with the first rotor. The second rotor is configured to be rotatable relative to the first rotor at greater than or equal to the predetermined relative rotational angle. The damper part is configured to elastically couple the input-side rotary part and the output-side rotary part.

Abstract: A power transmission device includes an input-side rotary part to which a torque is inputted from an engine, an output-side rotary part, and a damper part. The output-side rotary part includes a first rotor and a second rotor. The first rotor is configured to be rotatable relative to the input-side rotary part. The second rotor is configured to be unitarily rotatable with the first rotor. The second rotor is configured to be rotatable relative to the first rotor when the torque fluctuates with a predetermined magnitude or greater. The damper part is configured to elastically couple the input-side rotary part and the output-side rotary part.

Abstract: A vehicular fluid power transmitting device includes a pump impeller, a turbine runner, a damper device, a set member, and a centering member. The pump impeller has a pump shell to which torque from a drive source is input. The damper device has a damper input member and a damper output member. The damper input member is connected to an output shaft of the drive source. The damper output member is connected to the pump shell. The set member is fixed to the pump shell, and is connected to the damper output member. Also, the centering member is provided protruding toward the pump shell from the output shaft of the drive source, and is fitted together with the damper input member.

Abstract: A torque fluctuation absorbing apparatus is capable of securely sealing a space housing an elastic member even on application of a centrifugal force or at the time of cooling. The torque fluctuation absorbing apparatus includes a center plate, a side plate(s) (side plate assembly) coaxial with the center plate and slidably relative to the center plate, and an elastic member housed within a space delimited by the side plate assembly to absorb torque fluctuations between the side plate assembly and the center plate. The apparatus also includes a cover member secured to the center plate and slidably pressure contacted with the side plate assembly to cover from outside a space housing the elastic member, and a suppressing section capable of suppressing the cover member from deforming under a pressure acting on the cover member when atmospheric pressure within the space housing the elastic member(s) becomes lower than outside atmospheric pressure.

Abstract: A vehicular fluid power transmitting device has a pump impeller, a turbine runner, damper device, an annular set member and a bearing assembly. The pump impeller has a pump shell. The damper device is provided between a drive source and the pump shell in an axial direction of an output shaft, and has a damper input member that is connected to the drive source, and a damper output member that is connected to the pump shell. The damper output member is connected to the annular set member that is fixed to the pump shell. The damper input member is relatively rotatably supported via the bearing assembly by the annular set member.

Abstract: A vehicular fluid power transmitting device includes a pump impeller, a turbine runner, a damper device, and a ring-shaped annular set member. The pump shell has a rear shell and a front shell that is connected to the rear shell. Also, the ring-shaped annular set member connects the damper output member to the front shell and is fixed to the front shell. An intermediate position between a position of an outer radius of the front shell and a position of a radius of the cylindrical shaft is included in a width (W) of the annular set member in a radial direction of the annular set member.

Abstract: A vehicular fluid power transmitting device has a pump impeller, a turbine runner, damper device, an annular set member and a bearing assembly. The pump impeller has a pump shell. The damper device is provided between a drive source and the pump shell in an axial direction of an output shaft, and has a damper input member that is connected to the drive source, and a damper output member that is connected to the pump shell. The damper output member is connected to the annular set member that is fixed to the pump shell. The damper input member is relatively rotatably supported via the bearing assembly by the annular set member.

Abstract: A vehicular fluid power transmitting device includes a pump impeller, a turbine runner, a damper device, and a ring-shaped annular set member. The pump shell has a rear shell and a front shell that is connected to the rear shell. Also, the ring-shaped annular set member connects the damper output member to the front shell and is fixed to the front shell. An intermediate position between a position of an outer radius of the front shell and a position of a radius of the cylindrical shaft is included in a width (W) of the annular set member in a radial direction of the annular set member.

Abstract: A vehicular fluid power transmitting device includes a pump impeller, a turbine runner, a damper device, a set member, and a centering member. The pump impeller has a pump shell to which torque from a drive source is input. The damper device has a damper input member and a damper output member. The damper input member is connected to an output shaft of the drive source. The damper output member is connected to the pump shell. The set member is fixed to the pump shell, and is connected to the damper output member. Also, the centering member is provided protruding toward the pump shell from the output shaft of the drive source, and is fitted together with the damper input member.

Abstract: A torque fluctuation absorber includes a drive plate configured to rotate integrally with a crankshaft of an internal combustion engine, a center plate, a side plate, an elastic member for absorbing torque fluctuations, and a block member configured to be engaged with the drive plate and attached to the side plate, wherein the side plate includes plural accommodation portions accommodating the elastic member, and at least one of a recessed portion and a first window portion which are provided at a position corresponding to a position of the block member, and the block member is attached to a portion of the side plate between adjacent accommodation portions in a circumferential direction of the side plate.

Abstract: A torque limiter device includes a flywheel, a clutch disc assembly, a cover plate, a pressure ring, a plurality of friction members, a plurality of rivets and a cone spring. Each of the rivets is fixed to the cover plate and includes a first head portion disposed axially between a disc portion and the cover plate. The cone spring is disposed axially between the first head portions and the pressure ring in a compressed state.

Abstract: The torque limiter includes a flywheel, a clutch plate, a spline hub, a clutch disc assembly and a transmission torque limiting part. The flywheel includes a friction coupling surface. The clutch plate includes plural axial through holes. Plural friction members are respectively attached to the through holes. The spline hub can be engaged with a transmission-side shaft. The clutch disc assembly circumferentially elastically couples the clutch plate and the spline hub. The transmission torque limiting part limits torque to be transmitted from the flywheel to the transmission-side shaft while the friction members are interposed and held between the transmission torque limiting part and the friction coupling surface of the flywheel.

Abstract: A torque fluctuation absorber includes a center plate rotatably arranged, a side plate arranged coaxially with and rotatably relative to the center plate, an elastic member accommodated in a space surrounded by the side plate and absorbing torque fluctuations generated between the side plate and the center plate, a cover member separating the space and an outside space from each other by covering a clearance between the center plate and the side plate, and a vent portion arranged inwardly in a radial direction of the side plate relative to the cover member and providing a ventilation between the space and the outside space.

Abstract: A torque fluctuation absorber includes a drive plate configured to rotate integrally with a crankshaft of an internal combustion engine, a center plate, a side plate, an elastic member for absorbing torque fluctuations, and a block member configured to be engaged with the drive plate and attached to the side plate, wherein the side plate includes plural accommodation portions accommodating the elastic member, and at least one of a recessed portion and a first window portion which are provided at a position corresponding to a position of the block member, and the block member is attached to a portion of the side plate between adjacent accommodation portions in a circumferential direction of the side plate.

Abstract: A torque fluctuation absorber includes a center plate rotatably arranged, a side plate arranged coaxially with and rotatably relative to the center plate, an elastic member accommodated in a space surrounded by the side plate and absorbing torque fluctuations generated between the side plate and the center plate, a cover member separating the space and an outside space from each other by covering a clearance between the center plate and the side plate, and a vent portion arranged inwardly in a radial direction of the side plate relative to the cover member and providing a ventilation between the space and the outside space.

Abstract: A torque limiter device includes a flywheel, a clutch disc assembly, a cover plate, a pressure ring, a plurality of friction members, a plurality of rivets and a cone spring. Each of the rivets is fixed to the cover plate and includes a first head portion disposed axially between a disc portion and the cover plate. The cone spring is disposed axially between the first head portions and the pressure ring in a compressed state.

Abstract: A simple and low-cost structure is provided for fixing friction members of a torque limiter. The torque limiter includes a flywheel (5), a clutch plate (20), a spline hub (22), a clutch disc assembly (6) and a transmission torque limiting part (7). The flywheel (5) includes a friction coupling surface (14b). The clutch plate (20) includes plural axial through holes (20b). Plural friction members (26) are respectively attached to the through holes (20b). The spline hub (22) can be engaged with a transmission-side shaft (3). The clutch disc assembly (6) circumferentially elastically couples the clutch plate (20) and the spline hub (22). The transmission torque limiting part (7) limits torque to be transmitted from the flywheel (5) to the transmission-side shaft (3) while the friction members (26) are interposed and held between the transmission torque limiting part (7) and the friction coupling surface (14b) of the flywheel (5).

Abstract: A flexible plate is formed with a first rigidity about a first axis and a second rigidity about a second axis where the first and second axis are each perpendicular to a central axia about which the flexible plate is rotatable. The first rigidity is greater than the second rigidity such that the flexible plate may flex more easily about the second axis than the first axis, thus providing the flexible plate with an anisotropic flexural rigidity. In one embodiment, the flexible plate is formed with an eliptical intermediate portion. In another embodiment, the flexible plate includes first and second plates. Each plate has a central portion. The first plate has first foot portions and the second plate has second foot portions. The first and second foot portions have differing circumferential widths.

Abstract: A flexible plate is formed with a first rigidity about a first axis and a second rigidity about a second axis where the first and second axis are each perpendicular to a central axia about which the flexible plate is rotatable. The first rigidity is greater than the second rigidity such that the flexible plate may flex more easily about the second axis than the first axis, thus providing the flexible plate with an anisotropic flexural rigidity. In one embodiment, the flexible plate is formed with an eliptical intermediate portion. In another embodiment, the flexible plate includes first and second plates. Each plate has a central portion. The first plate has first foot portions and the second plate has second foot portions. The first and second foot portions have differing circumferential widths.