| 摘要 |
PROBLEM TO BE SOLVED: To provide a switch responding to vibration which can cut off conduction of electricity to home electric appliances or the like certainly on the occurrence of an earthquake, and prevents conduction of electricity from resuming, unless a resetting operation is performed. SOLUTION: A movable plate (32) is supported in an open side, to which an elastic plate (33) of a shape of a downward arch is integrated and formed. Usually, by a push-up power of the movable plate, displacement of the free end of the movable plate is carried out, and an opening-and-closing contact point (37 39) is shut. when there is a vibration of a magnitude more than a predetermined one, a vibration transfer axis (44) is pushed in by an weight (42), and the movable plate is deformed below a dealine. Then, a bias power pulling the elastic plate downward is made larger than a bias power pulling the movable plate upward and the opening-and-closing contact point is opened. |
