| 摘要 |
An isolating decoupler comprising a shaft (1), a pulley (2) journalled to the shaft, a torsion spring (10) engaged with the pulley, a wrap spring (11) frictionally engageable with the shaft, the torsion spring and wrap spring connected in series such that each is torsionally loaded in a winding direction, the wrap spring (11) comprising a variable cross- section having a first cross sectional dimension and a second cross sectional dimension, and the wrap spring temporarily releasable from the shaft (1) in an overtorque condition by contact with the pulley (2) urging the wrap spring in an unwinding direction. |
