| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure switch for preventing malfunction due to invasion of liquid such as water.SOLUTION: The pressure switch includes: a body 54 having an input port; a connector 55 having terminals 58, 59 to form a pair; a piston 56 movably interposed between the body 54 and the connector 55 and to receive pressure from the input port 54a; a return spring 64 to energize the piston 56 in separating direction from the connector 55; a spring holding cylindrical part 55d formed at the connector 55, to house the return spring 54, and to fix the terminals 58, 59 to the bottom plate part 55c; and a conductive plate spring 60 to electrically connect and separate between the terminals 58, 59 to form the pair by movement of the piston 56. At the bottom plate part of the spring holding cylindrical part 55d, a water drain hole 65 is installed. |
