| 摘要 |
PURPOSE:To facilitate a mesh screen to be stretched by uniform tension, by providing a plurality of long holes having radial angles on the frame surrounding the screen, engaging these holes with screws for fixing the screen to a support, and fixing it in the state where tension is applied in one direction. CONSTITUTION:A plurality of a long holes 2, 2', 2'' are provided on the border frame surrounding screen 1, and these long holes 2, 2', 2'' are formed in such as manner that the longer axes of hole group 2 and those of group 2' from radial lines having the common center alpha and beta on the central line of the screen, respectively, and the distance between the 2 points is shorter than that between groups 2, 2'. Mesh screen 1 is subjected to tension using these long holes, the right ends holes are engaged with screws 6, and screen 1 is stretched in the right direction, thus permitting screen 1 to be stretched in the vertical or lateral direction depending upon the relative movement distance of the long holes and the screws and the inclination angles of the holes. |
