脚蹬部件:脚蹬部件装配在中轴部件的左右曲柄上,是一个将平动力转化为转动力的装置,自行车骑行时,脚踏力首先传递给脚蹬部件,然后由脚蹬轴转动曲柄,牙盘,中轴,链条飞轮,使后轮转动,从而使自行车前进。因此脚蹬部件的结构和规格是否合适,将直接影响骑车人的放脚位置是否合适,自行车的驱动能否顺利进行。
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US4907985 Jun 26, 1989 Mar 13, 1990 Johnsen Cary T Safety twist lock connector for an extension power cordUS4907985 * Jun 26, 1989 Mar 13, 1990 Johnsen Cary T Safety twist lock connector for an extension power cordUS4907985 1989年6月26日 1990年3月13日 Johnsen; Cary T. Safety twist ...
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