| 摘要 |
The invention relates to a ball screw (20) comprising a ball nut (21), a roller bearing (22) and a belt pulley (23) arranged on the roller bearing (22). The ball nut (21) is arranged in the roller bearing (22) such that there is no reduction in tension between that of the belt pulley (23) and an assisting engine arranged to the side of the ball screw (20). |
