公开(公告)号：US20140062640A1

公开(公告)日：2014-03-06

申请号：US14019130

申请日：2013-09-05

申请人： Kunio Sasamori ,  Masaaki Totsuka ,  Yasuyuki Kawauchi ,  Keita Muneuchi ,  Hiroyasu Mori

发明人： Kunio Sasamori ,  Masaaki Totsuka ,  Yasuyuki Kawauchi ,  Keita Muneuchi ,  Hiroyasu Mori

IPC分类号： H01F3/08

CPC分类号： H01F3/08 ,  H01F17/04 ,  H01F27/255 ,  H01F27/292 ,  H01F2003/106 ,  H01F2017/048

摘要： [TECHNICAL PROBLEM]The present invention provides a surface-mount inductor allowing the Q to be improved at a higher frequency and preventing the efficiency of the inductor from getting worse even at the higher frequency.[SOLUTION TO THE PROBLEM]A surface-mount inductor comprises: a coil formed by winding a conductive wire; and a core containing the coil and formed by subjecting a mixture of a magnetic powder and a binder to powder-compacting. The magnetic powder contains plural types of magnetic powders each having a different particle size from the other, and the plural types of magnetic powders are mixed to satisfy the following relationship: Σan·Φn≦10 μm, where an is a mixing ratio, Φn is an average particle size, and n is an integer of 2 or more.

摘要翻译： 技术问题本发明提供了一种表面贴装电感器，其允许以更高的频率改进Q，并且甚至在较高的频率下也防止电感器的效率变差。 背景技术表面安装电感器包括：通过缠绕导线形成的线圈; 以及包含线圈并通过使磁粉和粘合剂的混合物进行粉末压实而形成的芯。 磁性粉末含有多种类型的各自具有不同粒径的磁性粉末，并且混合多种类型的磁性粉末以满足以下关系：Sigmaan·Phin @ 10um，其中a为混合比，Phin为 平均粒径，n为2以上的整数。

公开(公告)号：US20110309906A1

公开(公告)日：2011-12-22

申请号：US13115138

申请日：2011-05-25

申请人： Keita Muneuchi ,  Yusuke Kito ,  Takeo Ohaga ,  Hisashi Yano

发明人： Keita Muneuchi ,  Yusuke Kito ,  Takeo Ohaga ,  Hisashi Yano

IPC分类号： H01F17/04 ,  H01F7/06

CPC分类号： H01F17/045 ,  H01F27/327 ,  H01F2017/048 ,  Y10T29/4902 ,  Y10T29/49071

摘要： A coil component, in which a space on an outer periphery of a winding interposed between a pair of flange portion is coated with a resin with magnetic powder, has a problem of long-term reliability that a thermosetting resin expands and contracts due to change in a temperature and the flange portions are fatigued to be broken.An object of the present invention is to provide the coil component of which core is hardly broken even when the resin with magnetic powder expands and contracts and a method of manufacturing the same.In order to solve the above-described problem, the method of manufacturing the coil component according to one embodiment of the present invention is a method of manufacturing a coil component including a drum-shaped core including a winding core portion and a pair of flange portions provided on both ends in an axial direction of the winding core portion, and a winding wound around the winding core portion, including applying a mold releasing agent for providing a gap on at least one of opposed surfaces of the pair of flange portions, winding the winding around the winding core portion, applying a resin with magnetic powder formed of a thermosetting resin to a space on an outer periphery of the winding interposed between the pair of flange portions, and thermally curing the resin with magnetic powder.

摘要翻译： 卷绕在一对凸缘部之间的卷绕体的外周的空间用磁性粉末涂布树脂的线圈部件具有长期可靠性的问题，即热固性树脂由于变化而膨胀和收缩 温度和凸缘部分疲劳破裂。 本发明的目的是提供即使当具有磁性粉末的树脂膨胀和收缩时，芯也几乎不破裂的线圈部件及其制造方法。 为了解决上述问题，根据本发明的一个实施方式的线圈部件的制造方法是一种线圈部件的制造方法，该线圈部件包括：鼓形铁心，其包括卷绕芯部和一对凸缘部 设置在卷绕芯部的轴向的两端以及缠绕在卷绕芯部上的绕组，包括在所述一对凸缘部的至少一个相对的表面上施加用于提供间隙的脱模剂， 缠绕在卷芯部分上，将由热固性树脂形成的磁性粉末的树脂施加到置于一对凸缘部分之间的绕组的外周上的空间中，并用磁性粉末热固化树脂。

公开(公告)号：US20140062639A1

公开(公告)日：2014-03-06

申请号：US14019112

申请日：2013-09-05

申请人： Kunio Sasamori ,  Masaaki Totsuka ,  Yasuyuki Kawauchi ,  Keita Muneuchi ,  Hiroyasu Mori

发明人： Kunio Sasamori ,  Masaaki Totsuka ,  Yasuyuki Kawauchi ,  Keita Muneuchi ,  Hiroyasu Mori

IPC分类号： H01F3/08

CPC分类号： H01F3/08 ,  H01F17/04 ,  H01F27/255 ,  H01F27/292 ,  H01F2003/106 ,  H01F2017/048

摘要： [TECHNICAL PROBLEM]Present invention provides a surface-mount inductor allowing the Q to be improved at a higher frequency and preventing the efficiency of the inductor from getting worse even at the higher frequency.[SOLUTION TO THE PROBLEM]A surface-mount inductor comprises: a coil formed by winding a conductive wire; and a core comprising mainly of a magnetic powder and a resin and containing the coil therein. The magnetic powder contains plural types of magnetic powders each having a different particle size from others, and the plural types of magnetic powders are mixed to satisfy the following relationship: Σan·Φn≦10 μm, where an is a mixing ratio, Φn is an average particle size, and n is an integer of 2 or more.

摘要翻译： 技术问题本发明提供了一种表面贴装电感器，其允许以更高的频率改进Q，并且防止电感器即使在较高频率下也会变差。 背景技术表面安装电感器包括：通过缠绕导线形成的线圈; 以及主要由磁性粉末和树脂构成并且包含线圈的芯体。 磁性粉末含有与其他粒径不同的多种类型的磁性粉末，混合多种类型的磁性粉末以满足以下关系：Sigmaan·Phin @ 10um，其中a为混合比，Phin为 平均粒径，n为2以上的整数。

公开(公告)号：US20130255071A1

公开(公告)日：2013-10-03

申请号：US13854590

申请日：2013-04-01

申请人： Keita MUNEUCHI ,  Masaaki Totsuka ,  Kunio Sasamori

发明人： Keita MUNEUCHI ,  Masaaki Totsuka ,  Kunio Sasamori

IPC分类号： H01F41/02

摘要： A method of producing a surface-mount inductor having an external electrode with high connection reliability even in a high-humidity environment is provided.The method comprises the steps of: forming a coil by winding an electrically-conductive wire having a self-bonding coating; forming a core portion using a sealant comprising metal magnetic powders and a resin so as to encapsulate the coil while allowing each of opposite ends of the coil to be at least partially exposed on a surface of the core portion; applying an electrically-conductive paste containing metal fine particles having a sintering temperature of 250° C. or less onto the surface of the core portion; and forming an underlying electrode on the surface of the core portion by sintering the metal fine particles through a heat treatment of the core portion to achieve electrical conduction with the coil.

摘要翻译： 提供了即使在高湿度环境下也具有具有高连接可靠性的外部电极的表面安装电感器的制造方法。 该方法包括以下步骤：通过缠绕具有自粘合涂层的导电丝来形成线圈; 使用包含金属磁性粉末和树脂的密封剂形成芯部，以便使所述线圈封装，同时使所述线圈的每个相对端至少部分地暴露在所述芯部的表面上; 将含有烧结温度为250℃以下的金属微粒的导电性糊料涂布在芯部的表面上; 以及通过对所述芯部进行热处理来烧结所述金属微粒而在所述芯部的表面上形成下面的电极，以实现与所述线圈的导电。

公开(公告)号：US08438720B2

公开(公告)日：2013-05-14

申请号：US13115138

申请日：2011-05-25

申请人： Keita Muneuchi ,  Yusuke Kito ,  Takeo Ohaga ,  Hisashi Yano

发明人： Keita Muneuchi ,  Yusuke Kito ,  Takeo Ohaga ,  Hisashi Yano

IPC分类号： H01F7/06

CPC分类号： H01F17/045 ,  H01F27/327 ,  H01F2017/048 ,  Y10T29/4902 ,  Y10T29/49071

摘要： A coil component, in which a space on an outer periphery of a winding interposed between a pair of flange portion is coated with a resin with magnetic powder, has a problem of long-term reliability that a thermosetting resin expands and contracts due to change in a temperature and the flange portions are fatigued to be broken. An object of the present invention is to provide the coil component of which core is hardly broken even when the resin with magnetic powder expands and contracts and a method of manufacturing the same. In order to solve the above-described problem, the method of manufacturing the coil component according to one embodiment of the present invention is a method of manufacturing a coil component including a drum-shaped core including a winding core portion and a pair of flange portions provided on both ends in an axial direction of the winding core portion, and a winding wound around the winding core portion, including applying a mold releasing agent for providing a gap on at least one of opposed surfaces of the pair of flange portions, winding the winding around the winding core portion, applying a resin with magnetic powder formed of a thermosetting resin to a space on an outer periphery of the winding interposed between the pair of flange portions, and thermally curing the resin with magnetic powder.

摘要翻译： 卷绕在一对凸缘部之间的卷绕体的外周的空间用磁性粉末涂布树脂的线圈部件具有长期可靠性的问题，即热固性树脂由于变化而膨胀和收缩 温度和凸缘部分疲劳破裂。 本发明的目的是提供即使当具有磁性粉末的树脂膨胀和收缩时，芯也几乎不破裂的线圈部件及其制造方法。 为了解决上述问题，根据本发明的一个实施方式的线圈部件的制造方法是一种线圈部件的制造方法，该线圈部件包括：鼓形铁心，其包括卷绕芯部和一对凸缘部 设置在卷绕芯部的轴向的两端以及缠绕在卷绕芯部上的绕组，包括在所述一对凸缘部的至少一个相对的表面上施加用于提供间隙的脱模剂， 缠绕在卷芯部分上，将由热固性树脂形成的磁性粉末的树脂施加到置于一对凸缘部分之间的绕组的外周上的空间中，并用磁性粉末热固化树脂。