| 摘要 |
PROBLEM TO BE SOLVED: To provide a tube-form holder for a cylindrical cutout, which can prevent a closing lid from being left open. SOLUTION: The cutout 10 includes a body 1, a fuse cylinder 2, and the tube-form holder 3. The body 1 has an opening 11 at a bottom part. The fuse cylinder 2 is inserted from the opening 11 and mounted inside the body 1. The tub-form holder 3 is coupled with the fuse cylinder 2 coaxially in free detachment. The tube-form holder 3 includes a first cylinder 31 and a first lid body 32. The first cylinder 31 has its one end face in contact with a flange 2f of the fuse cylinder 2, and is insertion-coupled with a fixed cylinder 21 of the fuse cylinder 2. Furthermore, a moving cylinder 22 of the fuse cylinder 2 advances into the first cylinder 31. The first lid body 32 is coaxially coupled with the first cylinder 31 in an axis direction in free sliding, and can tightly seal the opening 11. If the fuse melts down, the moving cylinder 22 gets protruded from the fixed cylinder 21 to have the first lid body 32 separated from the opening 11. COPYRIGHT: (C)2011,JPO&INPIT
|
