Air pressure protection switch

• Main Authors: LIU LUYAO, HE HONGMEI, LIU MEI, SHI ANYUN, LIU HONGZHI, LIU CANMEI, FU LINLIN, YIN LIKUN, XUE LI, CAO CHENGXIANG, LIU JINGYUAN, LI SHUO, CHEN QIAOZHI, LIU HONGJI, LI DANDAN, WU DAN
• Format: Patent
• Language: English
• Published: 13.01.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The invention discloses an air pressure protection switch comprising a housing and a flexible separation layer. The flexible separation layer divides the housing into a first air chamber and a second air chamber; a contact plate is arranged at one side, arranged at the first air chamber, of the flexible separation layer; and two conductive plates cooperating with the contact plate are arranged inside the first air chamber. One of the first air chamber and the second air chamber is a sealed air chamber with a certain air pressure. When the first air chamber is the sealed one with the certain air pressure, the second air chamber is provided with an opening for connecting other devices; and when the second air chamber is the sealed one with the certain air pressure, the first air chamber is provided with an opening for connecting other devices. When the pressure of the first air chamber is less than that of the second air chamber, the conductive plates and the contact plate are in contact and the circuit is connected; and when the pressure of the first air chamber is larger than that of the second air chamber, the conductive plates and the contact plate are separated and the circuit is disconnected. The air pressure protection switch has advantages of simple structure, low manufacturing cost, and high stability.