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    • 19. 发明授权
    • Circuit breaker
    • 断路器
    • US06483420B1
    • 2002-11-19
    • US09630723
    • 2000-08-02
    • Hideo TakahashiNoboru Yamaguchi
    • Hideo TakahashiNoboru Yamaguchi
    • H01H3900
    • H01H85/044H01H39/006H01H85/36H01H2039/008H01H2085/466
    • When an ignitor 29 is ignited by an abnormal signal sent from outside, a heating agent 27 charged into a thermite case 26 is heated, a retainer 45 is melted by the heat, a compression spring 39a is expanded to allow the thermite case 26 to move up. Therefore, electrical connection between the thermite case 26 and each of a first bus bar 11a and a second bus bar 19a is interrupted. Thus, it is possible to reliably interrupt a circuit within a short time. Further, a low-melting metal 28 mounted to an intermediate portion of the second bus bar 19a is blown out by heat caused by a current flowing through the second bus bar 19a to interrupt the circuit. Therefore, even if an abnormal signal is not sent to the ignitor 29 due to failure of a control circuit or the like, it is possible to reliably interrupt the circuit.
    • 当点火器29被从外部发出的异常信号点燃时,加热到热铝壳体26中的加热剂27被加热,保持器45被热量熔化,压缩弹簧39a被膨胀以允许铝热壳体26移动 向上。 因此,铝热壳26与第一母线11a和第二母线19a之间的电连接被中断。 因此,可以在短时间内可靠地中断电路。 此外,安装到第二母线19a的中间部分的低熔点金属28被流过第二母线19a的电流引起的热量吹出以中断电路。 因此,即使由于控制电路等的故障而不向点火器29发送异常信号,也可以可靠地中断电路。