| 摘要 |
<p>An adjustable dumbbell device includes a linkwork mechanism (2,3) for adjusting the weight of two groups of plates (12) synchronously, which is provided for selecting the required weight of dumbbells by exercisers. After the dial (4) is turned to make the arrow point to the number corresponding to the required weight, the weight of the dumbbell lifted by an exerciser satisfies the exerciser's needs, and two groups of plates (12) are selected to match the required weight synchronously.</p> |
