| 摘要 |
The pulley comprises a section (200) with a ribbed outer surface (201) for engaging with a ribbed belt, and an elastic element (206) between the pulley section and a receiver (203) connected to the driven shaft (220). It incorporates a freewheeling mechanism (204) with balls, needles or cams, connected in series with the elastic element between the pulley section (200) and the receiver (203). The freewheeling mechanism ensures the transmission of power when the driving element is driven by the belt and uncoupling when it is not. |
