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    • 2. 发明申请
    • CHANGE MECHANISM OF TRANSMISSION
    • 变更机制
    • WO2007114409A1
    • 2007-10-11
    • PCT/JP2007/057347
    • 2007-03-27
    • HONDA MOTOR CO., LTD.KONO, NaokiKUBOTA, RyoUCHIDA, HiroyukiYAMAMOTO, Toshihiro
    • KONO, NaokiKUBOTA, RyoUCHIDA, HiroyukiYAMAMOTO, Toshihiro
    • F16H63/14
    • F16H63/14F16H63/18F16H63/38
    • In a change mechanism of transmission, a plurality of driven pins 15, provided at an end portion of a shift drum 2, are arranged around the axis of the shift drum 2. A change spindle 20 is made to operate in conjunction with a shift arm 25 which has a pair of drive pawls 27 facing each other with two of the driven pins 15 placed in between, the two driven pins 15 being adjacent to each other. When the shift arm 25 moves outwards, one of the drive pawls 27 feeds the corresponding one of the driven pins 15, and thus the shift drum 2 is caused to rotate by a predetermined unit angle. In this change mechanism of transmission, each drive pawl 27, rotatably supported to the shift arm 25, can move between a standing position A, where the drive pawl 27 stands up against the driven pin 15, and a receding position B, where the drive pawl 27 recedes from the driven pin 15. A standing spring 30 is connected to the drive pawls 27. When the shift arm returns, one of the drive pawls 27 is caused to recede to the receding position B by the corresponding driven pin 15 touching a rear face 27r of the drive pawl 27.
    • 在变速机构的变速机构中,设置在变速鼓2的端部的多个从动销15绕变速鼓2的轴线配置。变速主轴20与变速杆 25,其具有一对驱动爪27,两个驱动销彼此相邻,两个驱动销15彼此相邻,两个驱动销15彼此相邻。 当变速臂25向外移动时,驱动爪27中的一个将相应的一个从动销15送入,从而使换档鼓2旋转预定的单位角。 在这种变速机构中,可转动地支撑在换档臂25上的每个驱动爪27能够在驱动爪27与从动销15之间竖起的立场A和后退位置B之间移动, 棘爪27从从动销15后退。竖立弹簧30连接到驱动爪27.当换档臂返回时,驱动爪27中的一个被相应的从动销15接触到后退位置B 驱动爪27的后表面27r。