| 摘要 |
PROBLEM TO BE SOLVED: To provide an outer frame fixing device of an inspection port which can firmly fix an outer frame only by fitting an inner frame into the outer frame, can keep a joint gap between the outer frame and a floor material so as not to require worker's skilled work, and can be installed precisely and quickly.SOLUTION: An outer frame fixing device of an inspection port includes: an outer frame A providing a window hole 15 on a horizontal support surface 14a of an inner frame support part of one frame material 1A and opening an entrance 16 on an external wall 14c of the inner frame support part of another frame material 1B; a corner joint 2 providing a communication hole 21a for communicating with the window hole 15 and the entrance 16 in the plane of a base plate part 21 fitting into an insertion frame part 14b of the inner frame support part 14 of one frame material 1A and providing a projection base plate part 22 fitting into the insertion frame part 14b of the inner frame support part of the other frame material 1B; a slider 3 providing an inclined groove 34 in a slider main body 31 in which the lower portion is fitted into the communication hole 21a and the upper portion is raised upward from the window hole 15; and a piercing body 4 arranged in the communication hole 21a in which the tip corresponds to the entrance 16 and an inclined plate 43 of a base end fits to the inclined groove 34. |
