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    • 8. 发明专利
    • Solenoid for detecting short circuit
    • 用于检测短路的电磁阀
    • JPS5776803A
    • 1982-05-14
    • JP15289480
    • 1980-10-30
    • Matsushita Electric Works Ltd
    • YOKOYAMA YOUICHITATENO MAMORU
    • H01F7/122H01F7/16H01H71/32
    • H01F7/1615H01F7/122H01H71/322
    • PURPOSE:To improve the reliability of the action of a circuit breaker by providing at one end of a yoke a permanent magnet surrounding a sliding plunger which is placed inside a coil within the yoke thereby realizing a high speed action. CONSTITUTION:A coil is wound around a hollow holder 2 inside a yoke 1. An iron core 7 is mounted on one end of the yoke 1 and a plunger pin 8 at one end of the sliding plunger 10 pieces the iron core 7.A permanent manget 14 is placed between the other end of the yoke 1 and a magnetic plate 13 surrounding the plunber. A T- shaped operating rold 11 extended from the plunger 10 drives the breaker. The plunger 10 is normally positioned at the right by the magnetic force of the permanent magnet 10 and is drawn to tje lefe when drawn toward the iron core 7 due to sudden decrease of magnetic force caused by the movement of the plunger.
    • 目的:为了提高断路器动作的可靠性,通过在磁轭的一端设置一个围绕滑动柱塞的永久磁铁,该滑动柱塞放置在磁轭内的线圈内,从而实现高速作用。 构成:线圈缠绕在轭体1内的中空保持器2周围。铁芯7安装在轭架1的一端,并且在滑动柱塞10的一端的柱塞销8将铁芯7片断。永久 木盒14放置在轭架1的另一端和围绕着弹簧的磁板13之间。 从柱塞10延伸的T形操作杆11驱动断路器。 柱塞10通常由永磁体10的磁力位于右侧,并且由于柱塞的运动引起的磁力的突然下降而被拉向铁芯7时被拉出。