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    Normally-closed electromagnetic valve and manufacturing method for the same
    3.
    发明授权
    Normally-closed electromagnetic valve and manufacturing method for the same 有权
    常闭电磁阀及其制造方法相同

    公开(公告)号：US07246632B2

    公开(公告)日：2007-07-24

    申请号：US11092564

    申请日：2005-03-29

    申请人： Takeshi Ohi ,  Takaaki Komaba ,  Hiroaki Tokoi

    发明人： Takeshi Ohi ,  Takaaki Komaba ,  Hiroaki Tokoi

    IPC分类号： F16K31/02

    CPC分类号： F16K31/0655 ,  B60T8/363 ,  B60T15/028 ,  F16K31/0693 ,  Y10T137/0491

    摘要： A normally-closed electromagnetic valve has a body member having a receiving space, a fixed core, a valve seat, a moving core, a resilient member urging the moving core toward the valve seat, a valve element and a coil exciting the fixed core to produce an attracting force between the fixed core and the moving core, wherein the moving core has a through hole, the valve element is inserted into the through hole from the valve seat-side, at least a part of the resilient member is inserted into the through hole from the fixed core-side and the resilient member is compressed between a moving core-side end of the fixed core and a fixed core-side end of the valve seat.

    摘要翻译： 常闭电磁阀具有主体部件，该主体部件具有容纳空间，固定芯部，阀座，移动芯部，将移动铁心推向阀座的弹性部件，将该固定铁心励磁的阀芯和线圈 在固定芯与活动芯之间产生吸引力，其中移动芯具有通孔，阀元件从阀座侧插入到通孔中，弹性构件的至少一部分插入到 来自固定铁心侧的通孔和弹性构件在固定铁芯的可动铁心侧端部与阀座的固定铁芯侧端部之间被压缩。

    Normally closed solenoid valve
    4.
    发明申请
    Normally closed solenoid valve 有权
    常闭电磁阀

    公开(公告)号：US20050029478A1

    公开(公告)日：2005-02-10

    申请号：US10887318

    申请日：2004-07-09

    申请人： Takaaki Komaba ,  Takeshi Ohi

    发明人： Takaaki Komaba ,  Takeshi Ohi

    IPC分类号： F16K31/06 ,  F16K31/02

    CPC分类号： F16K31/0693 ,  B60T8/363 ,  F16K31/0655

    摘要： A normally closed solenoid valve includes a fixed core, a valve portion including a valve seat and a valve body, a movable core disposed between the fixed core and the valve seat, a resilient biasing member for biasing the movable core in a valve-closing direction and a coil. When energized, the coil generates an attracting force between the movable core and the fixed core against a biasing force by the resilient biasing member to cause the movable core to retreat from an initial position where the valve seat is in a closed state. When a characteristic graph line of spacing distance/attracting force that defines the attracting force in relation with a spacing distance between the fixed core and the movable core provides an inclination A (N/mm) at the initial position, the compression resiliency coefficient of the resilient biasing member is set to A(N/mm).

    摘要翻译： 常闭电磁阀包括固定芯，包括阀座和阀体的阀部分，设置在固定芯和阀座之间的可动芯，弹性偏压件，用于沿阀闭合方向 和线圈。 当通电时，线圈通过弹性偏置构件抵抗偏置力而在可动铁芯和固定铁芯之间产生吸引力，以使可动铁芯从阀座处于关闭状态的初始位置退回。 当限定与固定芯和可动铁芯之间的间隔距离相关的吸引力的间隔距离/吸引力的特性曲线图在初始位置提供倾斜A（N / mm）时，压缩弹性系数 弹性偏置构件设定为A（N / mm）。

    Drive circuit for a power semiconductor device
    5.
    发明授权
    Drive circuit for a power semiconductor device 失效
    用于功率半导体器件的驱动电路

    公开(公告)号：US06967519B2

    公开(公告)日：2005-11-22

    申请号：US10345388

    申请日：2003-01-16

    申请人： Yasushi Nakayama ,  Takeshi Ohi ,  Ryuichi Hashido

    发明人： Yasushi Nakayama ,  Takeshi Ohi ,  Ryuichi Hashido

    IPC分类号： H02M1/00 ,  H02M1/08 ,  H03K17/0812 ,  H03K17/16 ,  H03K17/30

    CPC分类号： H03K17/168 ,  H01L2924/0002 ,  H03K17/08128 ,  H01L2924/00

    摘要： A drive circuit for a power semiconductor device includes: a sampling signal generating circuit for detecting that an input control signal instructs OFF and outputting a sampling signal at the time instant of start of a Miller period of time of an IGBT; a gate voltage detecting circuit for detecting a Miller voltage of the IGBT at the timing when the sampling signal is inputted and outputting, when the Miller voltage is equal to or larger than a threshold, an over-current detection signal; and a gate voltage controlling circuit for controlling, in response to the over-current detection signal, a gate voltage of the IGBT in such a way that the IGBT is turned OFF at slower speed than in the normal state. Thus, it is possible to suppress a surge voltage which is generated when the IGBT is turned OFF during the flow of an over-current.

    摘要翻译： 一种用于功率半导体器件的驱动电路包括：采样信号发生电路，用于检测输入控制信号指示关闭并在IGBT的米勒启动时刻启动采样信号; 栅极电压检测电路，用于在采样信号输入的定时检测IGBT的米勒电压，并且当米勒电压等于或大于阈值时输出过电流检测信号; 以及栅极电压控制电路，用于响应于过电流检测信号，以与正常状态相比以较慢的速度关闭IGBT的方式来控制IGBT的栅极电压。 因此，可以抑制在过电流期间IGBT关断时产生的浪涌电压。

    Normally open solenoid valve
    6.
    发明申请
    Normally open solenoid valve 审中-公开
    常开电磁阀

    公开(公告)号：US20050001189A1

    公开(公告)日：2005-01-06

    申请号：US10858469

    申请日：2004-06-02

    申请人： Yoshiyuki Takamatsu ,  Masaya Shigeta ,  Takeshi Ohi

    发明人： Yoshiyuki Takamatsu ,  Masaya Shigeta ,  Takeshi Ohi

    IPC分类号： B60T8/36 ,  B60T15/02 ,  F16K31/06 ,  F16K31/02

    CPC分类号： F16K31/0655 ,  B60T8/363 ,  B60T15/028

    摘要： A normally open solenoid valve, includes: a coil; a fixed core that is excited when the coil is energized, the fixed core having a through hole and an opening formed at an end of the throughhole; a valve seat disposed at the opening; a valve element inserted through the through hole, the valve element including a valve part for coming into contact with the valve seat and a roughly columnar shaft part extending from the valve part; and a movable core that pushes and moves the valve element. The shaft part has a plurality of sliding portions that are slidable on the inner surface of the through hole and are formed to be spaced in an axial direction of the shaft part and a narrowed portion having an outer diameter smaller than the sliding portions between the plurality of sliding portions.

    摘要翻译： 常开电磁阀，包括：一个线圈; 固定铁心，其在线圈通电时被激励，固定铁芯具有通孔和形成在通孔的端部的开口; 设置在开口处的阀座; 通过所述通孔插入的阀元件，所述阀元件包括用于与所述阀座接触的阀部件和从所述阀部件延伸的大致柱状轴部; 以及推动和移动阀元件的可动芯。 所述轴部具有能够在所述贯通孔的内表面上滑动的多个滑动部，所述多个滑动部形成为沿所述轴部的轴向间隔开，所述狭窄部的外径小于所述多个 的滑动部分。

    Normally-closed electromagnetic valve and manufacturing method for the same
    7.
    发明授权
    Normally-closed electromagnetic valve and manufacturing method for the same 有权
    常闭电磁阀及其制造方法相同

    公开(公告)号：US07866627B2

    公开(公告)日：2011-01-11

    申请号：US11763244

    申请日：2007-06-14

    申请人： Takeshi Ohi ,  Takaaki Komaba ,  Hiroaki Tokoi

    发明人： Takeshi Ohi ,  Takaaki Komaba ,  Hiroaki Tokoi

    IPC分类号： F16K31/02

    CPC分类号： F16K31/0655 ,  B60T8/363 ,  B60T15/028 ,  F16K31/0693 ,  Y10T137/0491

    摘要： A normally-closed electromagnetic valve has a body member having a receiving space, a fixed core, a valve seat, a moving core, a resilient member urging the moving core toward the valve seat, a valve element and a coil exciting the fixed core to produce an attracting force between the fixed core and the moving core, wherein the moving core has a through hole, the valve element is inserted into the through hole from the valve seat-side, at least a part of the resilient member is inserted into the through hole from the fixed core-side and the resilient member is compressed between a moving core-side end of the fixed core and a fixed core-side end of the valve seat.

    摘要翻译： 常闭电磁阀具有主体部件，该主体部件具有容纳空间，固定芯部，阀座，移动芯部，将移动铁心推向阀座的弹性部件，将该固定铁心励磁的阀芯和线圈 在固定芯与活动芯之间产生吸引力，其中移动芯具有通孔，阀元件从阀座侧插入到通孔中，弹性构件的至少一部分插入到 来自固定铁心侧的通孔和弹性构件在固定铁芯的可动铁心侧端部与阀座的固定铁芯侧端部之间被压缩。

    Normally closed solenoid valve
    8.
    发明授权
    Normally closed solenoid valve 有权
    常闭电磁阀

    公开(公告)号：US07240893B2

    公开(公告)日：2007-07-10

    申请号：US10887318

    申请日：2004-07-09

    申请人： Takaaki Komaba ,  Takeshi Ohi

    发明人： Takaaki Komaba ,  Takeshi Ohi

    IPC分类号： F16K31/02

    CPC分类号： F16K31/0693 ,  B60T8/363 ,  F16K31/0655

    摘要： A normally closed solenoid valve includes a fixed core, a valve portion including a valve seat and a valve body, a movable core disposed between the fixed core and the valve seat, a resilient biasing member for biasing the movable core in a valve-closing direction and a coil. When energized, the coil generates an attracting force between the movable core and the fixed core against a biasing force by the resilient biasing member to cause the movable core to retreat from an initial position where the valve seat is in a closed state. When a characteristic graph line of spacing distance/attracting force that defines the attracting force in relation with a spacing distance between the fixed core and the movable core provides an inclination A (N/mm) at the initial position, the compression resiliency coefficient of the resilient biasing member is set to A (N/mm).

    摘要翻译： 常闭电磁阀包括固定芯，包括阀座和阀体的阀部分，设置在固定芯和阀座之间的可动芯，弹性偏压件，用于沿阀闭合方向 和线圈。 当通电时，线圈通过弹性偏置构件抵抗偏置力而在可动铁芯和固定铁芯之间产生吸引力，以使可动铁芯从阀座处于关闭状态的初始位置退回。 当限定与固定芯和可动铁芯之间的间隔距离相关的吸引力的间隔距离/吸引力的特性曲线图在初始位置提供倾斜A（N / mm）时，压缩弹性系数 弹性偏置构件设定为A（N / mm）。

    Normally-closed electromagnetic valve and manufacturing method for the same
    9.
    发明申请
    Normally-closed electromagnetic valve and manufacturing method for the same 有权
    常闭电磁阀及其制造方法相同

    公开(公告)号：US20050218364A1

    公开(公告)日：2005-10-06

    申请号：US11092564

    申请日：2005-03-29

    申请人： Takeshi Ohi ,  Takaaki Komaba ,  Hiroaki Tokoi

    发明人： Takeshi Ohi ,  Takaaki Komaba ,  Hiroaki Tokoi

    IPC分类号： B60T8/36 ,  B60T15/02 ,  F16K31/06 ,  F16K31/02

    CPC分类号： F16K31/0655 ,  B60T8/363 ,  B60T15/028 ,  F16K31/0693 ,  Y10T137/0491

    摘要： A normally-closed electromagnetic valve has a body member having a receiving space, a fixed core, a valve seat, a moving core, a resilient member urging the moving core toward the valve seat, a valve element and a coil exciting the fixed core to produce an attracting force between the fixed core and the moving core, wherein the moving core has a through hole, the valve element is inserted into the through hole from the valve seat-side, at least a part of the resilient member is inserted into the through hole from the fixed core-side and the resilient member is compressed between a moving core-side end of the fixed core and a fixed core-side end of the valve seat.

    摘要翻译： 常闭电磁阀具有主体部件，该主体部件具有容纳空间，固定芯部，阀座，移动芯部，将移动铁心推向阀座的弹性部件，将该固定铁心励磁的阀芯和线圈 在固定芯与活动芯之间产生吸引力，其中移动芯具有通孔，阀元件从阀座侧插入到通孔中，弹性构件的至少一部分插入到 来自固定铁心侧的通孔和弹性构件在固定铁芯的可动铁心侧端部与阀座的固定铁芯侧端部之间被压缩。

    Drive circuit for driving power semiconductor device
    10.
    发明授权
    Drive circuit for driving power semiconductor device 有权
    用于驱动功率半导体器件的驱动电路

    公开(公告)号：US06906574B2

    公开(公告)日：2005-06-14

    申请号：US10627784

    申请日：2003-07-28

    申请人： Takeshi Ohi ,  Yasushi Nakayama ,  Takeshi Tanaka

    发明人： Takeshi Ohi ,  Yasushi Nakayama ,  Takeshi Tanaka

    IPC分类号： H01L27/04 ,  H01L21/822 ,  H02M1/00 ,  H02M1/08 ,  H03K17/0812 ,  H03K17/16 ,  H03K17/28

    CPC分类号： H03K17/08128 ,  H03K17/168

    摘要： A drive circuit includes a gate voltage detector that detects a gate-emitter voltage Vge that appears between the gate and emitter of a power semiconductor device throughout a detection time period during which a sampler allows the process of detecting the gate-emitter voltage Vge, and that recognizes the occurrence of an abnormality in the power semiconductor device when the gate-emitter voltage Vge exceeds a reference value. Therefore, the drive circuit can protect the power semiconductor device with higher reliability by promptly detecting the occurrence of a short circuit even when the power semiconductor device is resistant to high voltages.

    摘要翻译： 驱动电路包括栅极电压检测器，其检测在功率半导体器件的栅极和发射极之间出现的栅 - 发射极电压Vge，在检测时间段期间，采样器允许检测栅 - 发射极电压Vge的处理，以及 当栅极 - 发射极间电压Vge超过参考值时，识别功率半导体器件发生异常。 因此，即使当功率半导体器件耐高压时，驱动电路可以通过及时检测短路的发生来以更高的可靠性来保护功率半导体器件。