A drive assembly for a motor vehicle drive train is provided. The drive assembly includes a first subassembly configured for connecting to an engine crank. The first subassembly includes a slip clutch plate. The drive assembly also includes a second subassembly connected to the first subassembly via a radially outer portion of the slip clutch plate. The second subassembly includes a damper assembly. A method of forming a drive assembly for a motor vehicle drive train is also provided.

A clutch disc includes a core plate and a friction member having an annular shape. The core plate includes a coupling portion having an annular shape and a plurality of fixation portions. The plurality of fixation portions protrude radially outward from the coupling portion and are circumferentially aligned through a plurality of slits each radially extending between adjacent two of the plurality of fixation portions. The friction member is fixed to the plurality of fixation portions and has an inner diameter larger than a diameter of the core plate at inner peripheral ends of the plurality of slits. The friction member includes a plurality of discharge grooves on an inner peripheral end surface thereof in corresponding portions thereof to the plurality of fixation portions. The plurality of discharge grooves lead water to the plurality of slits when the water drops on the inner peripheral end surface of the friction member.

A clutch assembly including a cover and a mounting ring having a plurality of arms extending outwardly to a strap mount. The assembly includes strap springs. Each strap spring has a first end connected to the strap mount and a second end opposite the first. The clutch assembly includes an annular pressure plate and a plurality of outwardly extending tabs. Each tab is releasably connected to the second end of a corresponding strap spring so the strap springs biases the pressure plate away from the flywheel. The assembly includes a keeper and a resilient diaphragm spring that biases the pressure plate toward the flywheel, deforming each strap spring, so the strap spring biases the annular pressure plate away from the flywheel. The diaphragm ring is resiliently deformable to a deformed position, allowing each strap spring to move the pressure plate away from the flywheel.

A vibration absorber is provided which is mounted in an annular space housing a spring of a damper, wherein accompanying rotational fluctuation of a drive source, when a first plate connected to the drive source and a second plate connected to a transmission rotate relative to each other while elastically deforming a spring, an arm part extending radially outward from a driven plate swings in the interior of an annular space, and grease packed in the annular space is compressed by the arm part and pushed inward in the radial direction, but since this grease is guided in the peripheral direction by a flow-aligning projection provided on either one of the driven plate and the seal plate and projecting toward the other, and is prevented from being concentrated in part of a seal member provided on the inner peripheral part of the seal plate and sealing the annular space.

A drive assembly for a motor vehicle drive train includes a first subassembly configured for connecting to an engine crank. The first subassembly includes a slip clutch plate. The drive assembly also includes a second subassembly connected to the first subassembly via a radially outer portion of the slip clutch plate. The second subassembly includes a damper assembly. A method of forming a drive assembly for a motor vehicle drive train is also provided.

A clutch assembly including a cover and a mounting ring having a plurality of arms extending outwardly to a strap mount. The assembly includes strap springs. Each strap spring has a first end connected to the strap mount and a second end opposite the first. The clutch assembly includes an annular pressure plate and a plurality of outwardly extending tabs. Each tab is releasably connected to the second end of a corresponding strap spring so the strap springs biases the pressure plate away from the flywheel. The assembly includes a keeper and a resilient diaphragm spring that biases the pressure plate toward the flywheel, deforming each strap spring, so the strap spring biases the annular pressure plate away from the flywheel. The diaphragm ring is resiliently deformable to a deformed position, allowing each strap spring to move the pressure plate away from the flywheel.

A clamping device for a shaft-hub connection in a torque-transferring device in a drive train of a vehicle. The connection is an axial spline connection between an externally toothed shaft and an internally toothed hub. An externally toothed ring is provided for clamping the shaft and hub, wherein the externally toothed ring includes an annular body having external teeth. Fastening tongues of leaf-spring-type design are provided on and extend from the radially inner side of the annular body. Outer ends of the leaf-spring-type fastening tongues are attached to the shaft, and the teeth of the toothed ring mesh with teeth of the hub. By rotating the toothed ring against a force provided by the fastening tongues, a clamping force is produced on the shaft-hub connection in the assembled state and is introduced into the shaft-hub connection through the teeth and fastening tongues.

A dual clutch having a first clutch which has a first pressure plate that is movable axially relative to a first counterplate for coupling a first clutch disk that is connected to a first output shaft, a second clutch, which has a second pressure plate that is axially movable relative to a second counterplate for coupling a second clutch disk that is connected to a second output shaft, a torsional vibration damper situated in the direction of flux force between the input shaft and the first counterplate wherein the torsional vibration damper includes a dual mass flywheel with a bow spring running in the circumferential direction to transmit torque, where the flux of force is introducible radially on the outside from the input shaft to the first counterplate into the dual mass flywheel, and is dispersible radially on the inside to the bow spring.

A damper is in the form of a disk and used for the clutch including: a clutch housing in which a clutch plate is held; and a clutch gear that transmits rotary drive power to the clutch housing via the damper. A non-circular engagement hole is formed at a center portion of a disk of the damper such that an engagement projection of the clutch housing engages with the engagement hole. First cutout portions are formed in the damper on an outer side and an inner side in a clutch radial direction on a rear side on which rotary drive power from the clutch gear is applied. A minimal distance between each first cutout portion and the engagement hole is smaller than a distance between the engagement hole and an outer circumference of the disk.

A vibration absorber is provided which is mounted in an annular space housing a spring of a damper, wherein accompanying rotational fluctuation of a drive source, when a first plate connected to the drive source and a second plate connected to a transmission rotate relative to each other while elastically deforming a spring, an arm part extending radially outward from a driven plate swings in the interior of an annular space, and grease packed in the annular space is compressed by the arm part and pushed inward in the radial direction, but since this grease is guided in the peripheral direction by a flow-aligning projection provided on either one of the driven plate and the seal plate and projecting toward the other, and is prevented from being concentrated in part of a seal member provided on the inner peripheral part of the seal plate and sealing the annular space.