CIRCUIT BREAKER

• Main Authors: NAGAMINE KAZUTERU, TABATA YUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 26.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

To provide a circuit breaker which can more surely extinguish an arc.SOLUTION: A circuit breaker 10 includes: a pair of rod-like members 34 which are interlocked to a mover 20 and have mutually approaching tip parts during opening operation; a plate spring 42 which connects upper ends of a pair of resin plates 36 provided on the pair of rod-like members 34 and the rod-like members 34, and is pressed by a first pressing part 20a of the mover 20 during the opening operation; and a shaft 40 which holds the plate spring 42 in any one of a first elastic deformation state of projecting upward and a second elastic deformation state of projecting downward. During the opening operation, the pair of resin plates 36 are moved between a fixing contact point 14 and a movable contact point 18, and opposite edges 36a come in contact with each other.SELECTED DRAWING: Figure 5 【課題】一層確実にアークを消弧させることのできる回路遮断器を提供する。【解決手段】回路遮断器１０は、開極動作時に、可動子２０に連動し、先端部が互いに接近する一対の棒状部材３４と、一対の棒状部材３４に設けられた一対の樹脂板３６と棒状部材３４の上端同士を連結し、開極動作時に可動子２０の第１押圧部２０ａによって押圧される板ばね４２と、板ばね４２を上向かって凸の第１弾性変形状態および下に向かって凸の第２弾性変形状態のいずれかに保持する軸４０とを有する。開極動作時に、一対の樹脂板３６は固定接点１４と可動接点１８との間に移動し対向縁同士３６ａが当接する。【選択図】図５