| 摘要 |
<p>The present invention relates to a blade damper. The blade damper comprises: a frame (100); a plurality of shafts (200) installed in the frame (100), separated from each other, and arranged in parallel with each other to open/close an internal space of the frame (100); and a blade (300) mounted on the shafts (200). The frame (100) is formed in a rectangular frame shape with a lower and an upper portion thereof penetrated. The plurality of shafts (200) are arranged in a line inside the frame (100). The blade (300) whose horizontal section is rectangular is mounted on the shafts (200). If the shafts (200) are rotated, the blade (300) rotates with the shafts to open/close the internal space of the frame (100). The present invention structurally modifies an end portion of the blade to improve air-tightness to minimize damages, and the blade can be easily opened and closed even with a small force.</p> |
