| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw structure for securing a wall surface via an adhesive, which can stably secure a base material to an external wall main body of a building. SOLUTION: A wall surface securing screw 1 is integrally formed of a screw head 2 having a diameter H1, a first screw portion 3 (inclusive of a shaft portion 4 of an under-head portion) having a diameter H2 and a length F, and a second screw portion 5 having a diameter H3 and a length B. The total screw length of the first screw portion 3 and the second screw portion 5 is set to a length C. An ALC material (an ALC wall surface) 6 as the external wall main body has a prepared hole 7 having a diameter H and a depth G (a length from an ALC wall front surface 6a) which is equal to a length A (a length E of the shaft portion 4 of the under-head portion, plus a length F of an actual screw portion) of the first screw portion 3 of the wall surface securing screw 1, and the adhesive 8 is filled in the prepared hole 7. When the wall surface securing screw 1 is inserted into the prepared hole 7, the second screw portion 5 penetrates a bottom 9 of the prepared hole 7 to be fixed to the ALC wall surface 6 in a temporarily screwed state. COPYRIGHT: (C)2006,JPO&NCIPI
|
