SWITCH

• Main Authors: SAGARA TAKEHIRO, YAMAGUCHI SHINICHI, TAKEMATSU TOSHIHIKO, HOTTA KATSUKI
• Format: Patent
• Language: English; Japanese
• Published: 28.07.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

To provide a switch capable of improving current interrupting performance by forming a return passage between the inside and the outside of an arc extinguishing chamber with a simple structure of the arc extinguishing chamber.SOLUTION: A switch includes: a fixed electrode 1 having a fixed contact 3; a movable electrode 2 having a movable contact 4 that comes into contact with and separates from the fixed contact 3; an arc running plate 5 electrically connected to the movable electrode 2, disposed opposite the fixed electrode 1, and configured to run an arc 20 generated between a pair of contact portions 34 of the fixed contact 3 and the movable contact 4; a pair of arc-extinguishing chamber side plates 7 arranged on both left and right sides in the running direction of the arc 20 so as to sandwich the fixed electrode 1, the movable electrode 2, and the arc running plate 5; and a plurality of vent holes 8 respectively provided in the pair of arc-extinguishing chamber side plates 7 along the traveling direction of the arc 20.SELECTED DRAWING: Figure 1 【課題】簡略な消弧室の構造により、消弧室の内部と外部間に還流通路を形成させ、電流遮断性能が向上できる開閉器を提供する。【解決手段】本開示に係る開閉器は、固定接点３を有する固定電極１と、固定接点３と接離する可動接点４を有する可動電極２と、可動電極２と電気的に接続され、固定電極１と対向して配置され、固定接点３と可動接点４との一対の接点部３４間で発生するアーク２０を走行させるアーク走行板５と、固定電極１、可動電極２およびアーク走行板５を挟むようにアーク２０の走行方向の左右両側に配置された一対の消弧室側板７と、アーク２０の走行方向に沿って、一対の消弧室側板７にそれぞれ設けられた複数の通気口８とを備える。【選択図】 図１