| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure switch with high reliability capable of preventing the intrusion of any foreign obstacle like dusts from the outside of a casing in a second pressure chamber while maintaining a communicated state of a second pressure chamber for housing a switch contact opening and closing in accordance with the pressure difference between the first and second pressure chambers and the outside of a casing for demarcating the first and second pressure chambers. SOLUTION: The pressure switch comprises a casing demarcating the first pressure chamber and the second pressure chamber C2, a terminal through hole 32 formed on the casing communicating the outside of the casing with the second pressure chamber C2, a switch contact housed in the second pressure chamber C2, turning on and off in compliance with the pressure difference between the first pressure chamber and the second pressure chamber C2, a terminal 15M connected to the switch contact projecting from the second pressure chamber C2 toward the outside of the casing through the terminal through hole 32, and a pair of seal parts 36f, 36r formed at the terminal part of the terminal through hole 32 at the opposite side of the pressure chamber C2, pressing the terminal 15 accompanied by such a deformation that pinches the terminal part 15M. COPYRIGHT: (C)2005,JPO&NCIPI
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