| 摘要 |
An expandable and contractable shade assembly includes a plurality of closed cell structures aligned vertically one above another with juncture lines defined between adjacent structures. Each closed cell structure includes a front face and a separate back face. The front face and the back face are offset from one another in relation to a vertical axis. In one embodiment, for instance, the front face of a higher cell is connected to both the front face and back face of a lower cell, while the back face of the higher cell is only connected to the back face of the lower cell. In an alternative embodiment, the front face of a higher cell is only connected to the front face of a lower cell, while the back face of the higher cell is connected to both the front face and the back face of the lower cell. The above configuration can increase strength and dimensional stability of the interconnected cells.
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