| 摘要 |
Disclosed is a laborsaving cam wheel structure formed of a fixed member and a movable member each having two slopes spirally running in reversed directions on the respective inner side. The slopes of the fixed member are respectively abutted against the slopes of the movable member such that when the movable member is biased relative to the movable member, the peak ends of the slopes of the movable member are moved along the slopes of the fixed member toward the root ends of the slopes of the fixed member.
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