| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: when a seal plate is soldered to a container of a fire extinguisher, gas leakage seldom occurs but, as an opening area is large, plate thickness needs to be increased and it becomes difficult for women and children to use the fire extinguisher. SOLUTION: The fire extinguisher includes a container 1 and a unsealing device 2. The container includes a body 11, a cover ring 12, a seal plate 13, and a siphon tube 14. The body is filled with extinguishant and pressurized gas. In the cover ring, its through-hole 16 is covered with the seal plate and an attachment part 17 projects and is soldered to an edge part of the opening. One end part of the siphon tube is fitted with the attachment part airtight, and the other end part opens to a bottom part of the body. The unsealing device includes a block body 21, a puncture needle 22, and an operator 23. A delivery port 25 of extinguishant L communicates with a shaft hole 24 of the block body, a ram 26 to whose one surface the puncture needle protrudes and whose other end part protrudes outside the block body in such a way as interlocking with the operator is given an isolation tendency with respect to the seal plate, and is slidably fitted. The unsealing device is fixed to the container by covering the cover ring. COPYRIGHT: (C)2011,JPO&INPIT |
