| 摘要 |
A drive assembly for a drug delivery device is provided, comprising a piston rod which is moveable in a distal direction in order to deliver a dose of medication, and comprising a drive element which is configured to cause a movement of the piston rod in a distal direction. The drive assembly further comprises a decelerating mechanism which is configured to decelerate the movement of the drive element such that the movement of the piston rod in a distal direction is decelerated during the dispense of a dose. The decelerating mechanism comprises a decelerating element which is fixed with respect to a housing of the drug delivery device at least during the dispense of a dose and the drive element, wherein the drive element is configured to rotate with respect to the housing during the dispense of a dose, and wherein the decelerating element and the drive element rub against each other during the dispense of a dose. |
