Answer
A CAM MECHANISM
凸輪機構
WINDOW QUESTION · ANSWERBUILD CLUB
The question
WHAT MECHANISM CONVERTS STEADY ROTATION INTO THE DRINKING BIRD’S REPEATED NODDING?
把連續旋轉變成飲水鳥反覆點頭的機構叫什麼？
Why it works
EACH TURN LIFTS AND RELEASES THE FOLLOWER, CREATING REPEATED MOTION
凸輪每轉一圈，就把從動件推高再放下，形成重複動作
See it in action · THE DRINKING BIRD CAM
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