| 摘要 |
The loop frame (1) has several articulated joints (4) for coupling several connecting tubes (3) together so as to form octagon frame (2), such that connecting tubes and joints are set at different loop shapes and/or sizes. The joint angle of connecting tubes is set in the range of 60-300 [deg] . The connecting tubes are formed of plastic, polyacrylate, polymethacrylate, polyester or other copolymers. The articulated joints are provided with several joint portions (5,6) with tubular base (13). |
