| 摘要 |
PURPOSE:To keep constant connection strength by making ceiling frames abut at their respective end portions to each other, and fitting the lower fit-in portion of a connector into the lower channeled portion of one ceiling frame, and fitting the upper fit-in portion of the connector into the upper channeled portion of the other ceiling frame so as to connect the ceiling frames together. CONSTITUTION:Upper and lower channeled portions 2,3 opposite to each other in the vertical direction are provided on the upper and lower portions and both sides of the shell portion 14 of each reverse-T-shaped ceiling frame 4 and the ceiling frames 4 are made to abut at their respective ends to each other. The right and left side portions of a lower fit-in portion 6 provided at the lower portion of a connector 4 are both fitted into the respective lower channeled portions 3 of adjacent ceiling frames 4 continued to each other. Next, the bending portion 9f a bending piece 8 is pressed by a caulking tool 17 and an upper fit-in portion 7 provided at the upper portion of the bending piece 8 is fitted into the upper channeled portion 2 of each ceiling frame. When a force to push the bending portion 9 is applied the bending piece 8 is buckled at its portion corresponding to the center holed portion 10 of the bending portion 8. Connection strength can thus be kept constant. |
