| 摘要 |
<p>A support device is disclosed. According to an embodiment of the present invention, the support device is ring-shaped and made of an elastic material, including a coupling part having a pressurizing member capable of being transformed on one side. When the pressurizing member contracts inwardly to the coupling part, the overall diameter of the coupling part is reduced, and when the pressurizing member protrudes outward, the overall diameter of the coupling part can be expanded.</p> |
