| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure switch which is suitable for a cubicle or the like having a fire extinguisher of pack type, and in which a pressure switch is formed in light weight and compact, and installation can be made extremely easy. SOLUTION: The pressure switch comprises a limit switch 2 that is operated by depressing a plunger 1, and is provided with a piston 3 for pressing the plunger 1 and a first cylinder 4 for supporting the piston 3 capable of sliding at the rear of the plunger 1. And a second cylinder 5 that supports the first cylinder 4 capable of sliding is provided at the limit switch 2, and an engaging part 6 that engages the first cylinder 4 to the plunger 1 side by pressing and presses the plunger 1 through the piston 3 is provided at the first cylinder 4 or the piston 3.
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