| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a radius of curvature of a direction-changing curved portion connecting straight portions of two crossing surfaces of a horizontal sliding shutter. <P>SOLUTION: An escape hinge displacement permitting portion 44 is disposed in such a manner that a bracing guide 62 in an upper frame 41, which guides a bracing horizontal roller 3 of an escape hinge 15, does not exist only in a direction-changing curved portion 43; the escape hinge 15 passing through the curved portion 43 is displaced from the depth-direction center of the upper frame 41; a contact of an adjacent vertically-long panel 13 connected to the escape hinge 15, which forms a chord with respect to its arc, is shifted to the side of the center of the arc; the direction-changing curved portion 43 is formed from the arc passing through the contact; and a radius of curvature of the direction-changing curved portion 43 is reduced as a horizontal sliding shutter S having the same constitution is used. <P>COPYRIGHT: (C)2012,JPO&INPIT |
