| 摘要 |
An engagement coupling for a starter drive, in which driving and driven jaws (20, 21) engage each other through face gears, is provided with a blocking mechanism (51). The blocking mechanism (51) is located in the driven jaw (21) and consists of flyweights (57) and a blocking rod (55). The flyweights (57) cause the rod (55) to extend into a blocking position against a pinion assembly (11) when a predetermined engine speed has been reached and the jaws (20, 21) have been separated. Once the rod (55) has been extended and the rotational speed of the driven jaw (21)is maintained, the rod (55) blocks the driving jaw (20) from destructively engaging the driven jaw (21). The blocking condition remains effective until such time as the driven (21) jaw has slowed down, e.g. after the engine has been shut down.
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