APERTURE GRILLE SUSPENDING AND TENSIONING DEVICE

PROBLEM TO BE SOLVED: To apply uniform tension to an aperture grille by pulling a pair of suspending and tensioning members in the separating direction from each other, and forming the tip section of a pressure piece on the insertion side into a groove formed on a second member into a protruded shape. SOLUTION: A tip section 331b a pressure piece 33b is inserted into a groove 41b across the end side vicinity on the longitudinal direction side of a slit of an aperture grille 1. A contact portion of the tip section 331b kept in contact with the inner face of the groove 41b at the deep position of the groove 41b is increased, and the aperture grille 1 is hardly slid. The friction of the pressure pieces 33a, 33b is decreased, the inserting actions of the aperture grille 1 can be made many times. When suspending and tensioning members 50a, 50b are pulled in the separating direction from each other, the aperture grille 1 is uniformly pulled, and no wrinkle is generated on the surface of the aperture grille 1 after the aperture grille 1 and a frame are welded.