| 摘要 |
Disclosed is a decoupler (1, 1') for transferring a drive torque from a rotary drive (3) to a rotary output (5), comprising: - a drive part (7) arranged on the rotary-drive side, - an output part (9) arranged on the rotary output side, - a series connection lying between the drive part and the output part, said connection consisting of a helical torsion spring (11) and a one-way clutch (10), which permits overrunning of the output part with respect to the drive part in the rotational drive direction, - a first spring collar (14), arranged on the drive-part side, for the first end (12) of the helical torsion spring, - and a second spring collar (15), arranged on the output part side, for the second end (13) of the helical torsion spring. The spring collars increase axially in inclination, in the manner of ramps and the helical torsion-spring ends lying thereon expand the helical torsion spring radially whilst transferring the drive torque. The helical torsion-spring ends and the spring collars are to be provided with reciprocal rotary stops (19, 20), which together prevent, in the rotational drive direction, relative torsion of the second spring collar in relation to the second helical torsion-spring end and of the first helical torsion-spring end in relation to the first spring collar. |
