| 摘要 |
PURPOSE:To facilitate a work for forming an opening of a ceiling plate or a work for mounting a ceiling plate by a method wherein a hanger device is provided with an indicator for indicating a forming location of an opening. CONSTITUTION:Holes 2e, 3e for use in fixing a top plate 6a of a main body 6 are provided at a substantial central part of each of lateral frames 2b and 3b and further reinforcing projections 2f, 3f and flanges 2g, 3g are provided. Fixing flanges 3h, 3i are formed at lower ends of vertical frames 3c, 3d. The vertical frames 2c and 2d are also formed with fixing flanges. Side plates 4a and 5a are formed with flanges 4b and 5b bent outwardly. Indicators 7 and 8 are fixed by screws to both ends of flanges 4b and 5b so as to indicate a location forming an opening 28 in a ceiling plate 27. When a mounting work for the ceiling plate 27 is to be carried out, the opening 28 is formed at the ceiling plate 27. The opening 28 of the ceiling plate 27 can be formed in such a way as the flanges 4b, 5b of the side plates 4a, 5a of the hanger device 1, an end part of the holder 12 and end parts of indicator devices 7, 8 may coincide to it and thus the work can easily be carried out. |
