公开(公告)号：US08426759B2

公开(公告)日：2013-04-23

申请号：US12989250

申请日：2009-04-21

申请人： Kazuhiro Nagatake ,  Tooru Kobayashi ,  Yoshihiko Matsui

发明人： Kazuhiro Nagatake ,  Tooru Kobayashi ,  Yoshihiko Matsui

IPC分类号： H01H33/666

CPC分类号： H01H33/666 ,  H01H1/50

摘要： Vacuum circuit breakers are to gain an extended lifetime by reducing contact face damage of moving and fixed electrodes with improved voltage withstand performance therebetween and enhanced interruption performance. Vacuum circuit breaker of the present invention has bulb 10 having: insulative vacuum tube 11; and fixed electrode 12 on end of current-carrying conductor 13 and moving electrode 15 on end of another current-carrying conductor 16 arranged in insulative vacuum tube 11 with their electrode contact faces opposed each other. Operation system for manipulating current-carrying conductor 16 of moving electrode 15 is equipped with compression-spring 20 and auxiliary compression-spring 21 that increases initial opening speed of moving electrode 15. Auxiliary compression-spring 21 ceases energizing in the middle of a circuit breaking movement of moving electrode 15 and begins storing spring energy in the middle of a circuit closing movement of the same.

摘要翻译： 通过减小移动和固定电极的接触面损伤，真空断路器可延长使用寿命，同时提高其耐压性能并提高其中断性能。 本发明的真空断路器具有灯泡10，其具有：绝缘真空管11; 在载流导体13的端部固定电极12和位于绝缘真空管11上的另一载流导体16的端部的移动电极15，其电极接触面彼此相对。 用于操作移动电极15的载流导体16的操作系统配备有增加移动电极15的初始打开速度的压缩弹簧20和辅助压缩弹簧21.辅助压缩弹簧21在断路中间停止通电 移动电极15的移动，并开始在其闭路运动的中间存储弹簧能量。

公开(公告)号：US08440112B2

公开(公告)日：2013-05-14

申请号：US13126515

申请日：2009-10-02

申请人： Yasushi Noda ,  Hiromasa Sato

发明人： Yasushi Noda ,  Hiromasa Sato

IPC分类号： H01B1/02

CPC分类号： H01H1/0206 ,  B22F2999/00 ,  C22C1/0425 ,  C22C27/06 ,  C22C30/02 ,  H01H11/048 ,  H01H33/664 ,  B22F3/10 ,  B22F2201/01 ,  B22F2201/10

摘要： Atomized Cu—Cr alloy powder, 20 to 30 percent by weight of Thermite Cr powder and 5 percent by weight of electrolytic Cu powder are mixed together and undergo solid phase sintering treatment to form an electrode material for vacuum circuit breakers. The gross content of Cr of the electrode material is 30 to 50 percent by weight. In manufacturing the electrode material for vacuum circuit breakers, such powders are mixed together and then undergo compression molding to be formed into a compressed compact. The compressed compact is performed solid phase sintering at a temperature lower than the melting point of Cu in a non-oxidizing atmosphere to prepare a solid phase sintered body.

摘要翻译： 雾化的Cu-Cr合金粉末，20〜30重量％的Thermite Cr粉末和5重量％的电解Cu粉末混合在一起，进行固相烧结处理，形成真空断路器的电极材料。 电极材料的Cr的总含量为30〜50重量％。 在制造用于真空断路器的电极材料时，将这种粉末混合在一起，然后进行压缩成型以形成压缩成型体。 在非氧化性气氛中，在低于Cu的熔点的温度下进行固相烧结，制备固相烧结体。

公开(公告)号：US20130199905A1

公开(公告)日：2013-08-08

申请号：US13806568

申请日：2011-06-20

申请人： Yasushi Noda ,  Hiromasa Sato

发明人： Yasushi Noda ,  Hiromasa Sato

IPC分类号： H01H1/06 ,  H01B13/00 ,  H01B1/02

CPC分类号： H01H1/0206 ,  B22F3/26 ,  B22F2998/10 ,  C22C1/0425 ,  C22C1/0491 ,  C22C9/00 ,  C22C27/04 ,  C22C30/02 ,  H01B1/02 ,  H01B13/0036 ,  H01H1/06 ,  H01H33/6642 ,  B22F1/0003 ,  B22F3/02 ,  B22F3/10

摘要： Provided are: a method for producing an electrode material for a vacuum circuit breaker, whereby withstand voltage, high current interruption performance and capacitor switching performance can be improved; an electrode material for a vacuum circuit breaker; and an electrode for a vacuum circuit breaker.The electrode material for a vacuum circuit breaker is produced by a method comprising a mixing step, a press sintering step, and a Cu infiltration step. In the mixing step, an Mo powder having a particle diameter of 0.8 to 6 μm is homogeneously mixed with a thermite Cr powder having a particle diameter of 40 to 300 gm in such a manner as giving a mixing ratio (Mo:Cr) of 1:1 to 9:1 and satisfying the weight relation Mo≧Cr. In the press sintering step, the resultant mixture is pressure molded under a press pressure of 1 to 4 t/cm2 to give a molded article. Next, said molded article is sintered by maintaining the same at a temperature of 1100 to 1200° C. for 1 to 2 hours in an heating furnace to give a partially sintered article. In the Cu infiltration step, a thin Cu plate is placed on said partially sintered article and maintained at a temperature of 1100 to 1200° C. for 1-2 hours in a heating furnace so that Cu is liquid-phase sintered and infiltrated into the partially sintered article. A contact material of an electrode for a vacuum circuit breaker has an integral structure consisting of a central member and a Cu—Cr outer peripheral member, said central member having been produced as described above and comprising 30 to 50 wt % of Cu of a particle diameter of 20 to 150 μm and 50 to 70 wt % of Mo—Cr of a particle diameter of 1 to 5 μm, while said outer peripheral member being formed of a material, which is highly compatible with the central member, shows excellent interruption performance and had high withstand voltage, and being provided outside the central member and fixed thereto.