| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fixing structure of a treadboard of a staircase, which has a high degree of freedom of construction, and which enables the treadboard to be easily post-constructed, without causing damage to either of an open stinger and a closed stinger, even if the open stinger and the closed stinger are installed in advance. <P>SOLUTION: A fitting protrusion 22 of a open stinger such as a stringer 2 comprises a through-hole 23 which penetrates in a width direction, and a shaft body 24 which is inserted into the through-hole 23 and which is long enough for right and left ends to protrude from the through-hole 23. The fitting recess 11 of the treadboard 1 has a width dimension equivalent to the length of the shaft body 24. When the treadboard 1 is inserted into a treadboard inserting part 21 which is provided in the open stinger, right and left ends of the shaft body 24, which are protruded from the through-hole 23 of the fitting protrusion 22, are put into the state of being fitted between the right and left inner walls of the fitting recess 11; and the treadboard 1 can slide in the width direction according to the sliding motion of the shaft body 24 in the through-hole 23. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
