A friction device for a torsional vibration damper includes an axis of rotation, an input side with a first disc and a second disc, and an output side between the first disc and the second disc and rotatable relative to the input side. The output side has a first friction disc, a second friction disc, and a spring element between the first friction disc and the second friction disc. The spring element has first, second and third contact regions. At a first angle of rotation between the input side and the output side, an axial contact force between the first friction disc and the second friction disc is transmittable via the first contact region and the third contact region. At a second angle of rotation, different than the first angle of rotation, the axial contact force is transmittable via the second contact region and the third contact region.

A torque limiter for a drive train includes a rotational axis extending in an axial direction, a drive side, an output side, a first friction surface on a one of the drive side or the output side, a second friction surface on the other of the drive side or the output side, and a friction lining. The friction lining has a first material with a first friction coefficient facing the first friction surface and a second material with a second friction coefficient, different from the first friction coefficient, facing the second friction surface. The friction lining is under a preload acting in the axial direction, torque-transmissively connects the output side to the drive side until a limit torque is reached, and is arranged to slip on the first friction surface when the limit torque is exceeded.

Uncoupling pulley having a longitudinal axis, and including a wheel rim having a first zone, to receive a belt connecting the wheel rim to a first power transmission element, and second zone situated in the axial extension along the direction defined by the longitudinal axis of the pulley, of the first zone; a hub to be secured to a second power transmission element; one of the power transmission elements being driving, and the other being driven; a ring mounted below the second zone of the wheel rim and around the hub, so the ring can rotate, around the longitudinal axis, relative to the wheel rim and/or the hub; an elastically deformable element mounted between the hub and the ring; and a unidirectional clutch having an end fastened to the ring and the remaining part of which is mounted below the second zone of the wheel rim and above the ring.

A damper device includes first to third rotating elements rotatable about a rotational center; a first elastic element located between the first and third rotational elements and compressed by relative rotation of the first rotational element to the third rotational element in one rotational direction; a second elastic element located between the second and third rotational elements and compressed by relative rotation of the third rotational element to the second rotational element in the one rotational direction, a support member intervenient between the third rotational element and the first elastic element to support the first elastic element; and a restrictor provided with the third rotational element to rotatably support the support member in a plane orthogonal to the rotational center, to restrict the support member from rotating beyond a certain angle and from moving away from the third rotational element in rotational directions.

A compensating coupling connects a first shaft to a second shaft along an axis of rotation. The compensating coupling has a first coupling body connected to an end of the first shaft and a second coupling body connected to an end of the second shaft. At least one elastic coupling element has a longitudinal axis lying in a plane that is oriented perpendicularly to the axis of rotation. The two coupling bodies are arranged with respect to one another to form a three-dimensional coupling region in which the elastic coupling element is arranged. The elastic coupling element is connected to the two coupling bodies such that the two coupling bodies are displaceable in the radial direction with respect to the axis of rotation. The elastic coupling element is displaceable in the axial direction with respect to the axis of rotation.

A switching device for a drivetrain of a motor vehicleincludes a housing in which a first and a second driveshaft are rotatably mounted. The first and second driveshafts are arranged coaxially with one another so that they have a common rotation axis; The switching device further including switchable clutch device arranged between the first and the second driveshaft. The clutch device is transferrable into a disengaged open switched position, in which the first driveshaft is freely rotatable relative to the second driveshaft, and into an engaged switched position, in which the first driveshaft is connected to the second driveshaft via the clutch device for conjoint rotation. The control element is formed by a sliding sleeve, with an annular space being formed between each of the clutch elements, the corresponding drive shaft and the control element. The control element is arranged displaceably relative to the clutch element over a delimited axial path of movement, such that the volume of the annular space is variable.

A torsion shaft assembly includes a torque carrying shaft including a driven end configured for receiving torque input to the torque carrying shaft and a driving end configured for outputting torque output from the toque carrying shaft. The torque carrying shaft includes an axial facing damping interface surface axially between the driven end and the driving end. A friction tube is disposed outboard of the torque carrying shaft. The friction tube is connected at a first axial location to be driven by the torque carrying shaft. The friction tube includes an axial facing damping interface surface that abuts the axial facing damping interface surface of the torque carrying shaft, forming a damping interface to provide frictional dampening against angular vibrations occurring as differential angular displacement between the driven end and the driving end of the torque carrying shaft.

A centered double universal joint comprises a housing having a first inner joint fork and a second inner joint fork, a first outer joint fork hingedly connected to the first inner joint fork via a first trunnion cross, a second outer joint fork hingedly connected to the second inner joint fork via a second trunnion cross, an annular recess in the housing disposed about a longitudinal axis of the housing, a guide disc that is guided in a radially adjustable manner in the annular recess of the housing, the two outer joint forks being coupled in an articulated manner to the guide disc, and two floating discs arranged in the axial direction on both sides of the guide disc in the annular recess, wherein the housing, the floating discs or the guide disc is/are magnetized, exerting a magnetic force on the floating discs in the direction of the longitudinal axis.

A coupling assembly for transmitting rotational forces from a driving shaft to a driven shaft, the driving and driven shafts having teeth. The coupling assembly includes a first and a second flange, each flange configured to be rotationally fixed onto respective shafts. A pair of resilient shoes are disposed between the flanges. The shoes are configured to be attached to the coupling assembly by a first plurality of fasteners that are fixed to the first flange and extend through the shoes to connect the shoes to the first flange and a second plurality of fasteners are fixed to the second flange and extend through the shoes to connect the shoes to the second flange.

According to the present disclosure, there is provided a structure of an electric power steering device in which its steering shafts are connected includes a torsion bar connected to a steering wheel; an input shaft surrounding the torsion bar on an input side of the torsion bar;

and an output shaft surrounding one end of the input shaft and the torsion bar on an output side of the torsion bar, wherein the one end of the input shaft is inserted into and coupled to one end of the output shaft, and a copper bush and a needle bearing are disposed side by side between an outer circumferential surface of the one end of the input shaft and an inner circumferential surface of the one end of the output shaft.