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CRANK VARIABLE-SPEED GEAR DEVICE FOR INCREASING ROTATIONAL POWER
CRANK VARIABLE-SPEED GEAR DEVICE FOR INCREASING ROTATIONAL POWER
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机译:用于增加旋转功率的曲柄变速齿轮装置
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摘要
Disclosed is a crank variable-speed gear device (100) wherein the gear ratio can be increased to 1.6:1 to 1.8:1 through a gear assembly and a latch assembly, and the gear ratio can also be changed to 1:1, if necessary, thereby providing an excellent transmission efficiency, facilitating the manipulation thereof, and making it possible to provide a compact and lightweight bicycle.
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