| 摘要 |
The invention concerns a sheath structure 10 for use as a backrest for a chair or as a seat, an envelope, a wallet, a purse, a handbag, a panel, etc., comprising a flexible sheet material 32 stretched on a frame 20 and having spaced-apart front and rear external surfaces 33, 39. The frame consists of at least two spaced-apart front and rear frame elements 26, 24, each corresponding to the front and rear external surfaces 33, 39. The frame elements define an intermediate space between each other. The sheet material 32 forms the front and rear external surfaces 33, 39, extends over the frame elements 26, 24 and is tucked into the intermediate space, while clamping devices, such as elastic devices 38, cooperate with the tucked-in parts of the sheet material 32 in order to stretch this material on the frame. <IMAGE> |
