| 摘要 |
PROBLEM TO BE SOLVED: To improve workability by fitting bolt head parts into a cross-sectional T-shaped groove arranged on a connecting horizontal bar, and fixing an installing part to bolt shaft parts projected from the groove. SOLUTION: Head parts of bolts 9 having a square head part corresponding to a groove width are slidingly fitted into and housed in a cross-sectional almost T-shaped guide groove of a square bar-shaped connecting horizontal bar 4 composed of a metallic section or the like. Next, door suspending plates 2 and 2' to pivotally support sash rollers 3 are engaged with shaft parts of the bolts 9 projected outside through an opening of the guide groove formed on a front face of the bar 4, and are fixed to prescribed positions through nuts 11. A belt catch plate 5 to connect a belt 6 to horizontally move a door main body 1 of an automatic door, a key receiver 13 for an electric lock and a magnet 14 for a proximity switch, are similarly installed in prescribed positions in the bar 4. Therefore, the door suspending plates and a door driving part can be easily installed without performing tap work on the connecting horizontal bar as usual, and an installing position can also be freely moved, changed and adjusted. |
