| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an outer frame device for inspection hole with a simple structure that can be installed simply and easily as well as quickly, without causing deformation of an outer frame due to driving of a machine screw so as to achieve proper and firm installation. <P>SOLUTION: An outer frame device for inspection hole comprises an outer frame 3, a fitting part 4 installed at the bottom of the outer frame 3, a fixed column 2 having a suspended rail 23 in a head part 21 fitted to the fitting part 4 so as to be engaged and disengaged to and from the fitting part 4, and an arched engaging body 1 having a window hole 13 in the surface of one end side capable of being elevated on the suspended rail 23 while being engaged to the suspended rail 23 and an arched hook arm 12 at the other end side for abutting a tip 12a on the bottom surface of a floor 8. <P>COPYRIGHT: (C)2012,JPO&INPIT |
