公开(公告)号：US08054151B2

公开(公告)日：2011-11-08

申请号：US12691959

申请日：2010-01-22

申请人： Nobuyuki Kobayashi ,  Kazuyuki Mizuno ,  Natsumi Shimogawa ,  Shuichi Ozawa

发明人： Nobuyuki Kobayashi ,  Kazuyuki Mizuno ,  Natsumi Shimogawa ,  Shuichi Ozawa

IPC分类号： H01F27/02

CPC分类号： H01F41/0246 ,  H01F17/04 ,  H01F27/255 ,  H01F27/34 ,  H01F2017/048 ,  Y10T29/49073

摘要： A compact inductor comprises a coil, a coil-burying body, and a body for a closed magnetic circuit. The coil-burying body is a fired porous ceramic body having a first magnetic permeability, in which the coil is buried. In the coil-burying body, “a through-hole 12a passing through inside of the coil along an axis of the coil” is formed. The body for a closed magnetic circuit is a fired dense ceramic body having a second magnetic permeability greater than the first magnetic permeability. The body for a closed magnetic circuit is arranged closely/densely at an outer circumference portion of the coil-burying body and in the through-hole. A magnetic path is therefore formed mainly within the body for a closed magnetic circuit, and the magnetic flux density is reduced in an area close to the coil. Accordingly, an inductor having the excellent superimposed DC current characteristic is provided.

摘要翻译： 紧凑型电感器包括线圈，线圈掩埋体和用于闭合磁路的主体。 线圈埋体是具有第一磁导率的烧制多孔陶瓷体，其中线圈被埋置。 在线圈埋层体中形成有沿着线圈的轴线穿过线圈内部的通孔12a。 用于闭合磁路的本体是具有大于第一磁导率的第二磁导率的烧制致密陶瓷体。 用于封闭磁路的主体紧密/密集地布置在线圈埋入体的外周部分和通孔中。 因此，主要在体内形成用于封闭磁路的磁路，并且在靠近线圈的区域中磁通密度减小。 因此，提供具有优异的叠加DC电流特性的电感器。

公开(公告)号：US20100194511A1

公开(公告)日：2010-08-05

申请号：US12691959

申请日：2010-01-22

申请人： Nobuyuki Kobayashi ,  Kazuyuki Mizuno ,  Natsumi Shimogawa ,  Shuichi Ozawa

发明人： Nobuyuki Kobayashi ,  Kazuyuki Mizuno ,  Natsumi Shimogawa ,  Shuichi Ozawa

IPC分类号： H01F27/02 ,  H01F41/02

CPC分类号： H01F41/0246 ,  H01F17/04 ,  H01F27/255 ,  H01F27/34 ,  H01F2017/048 ,  Y10T29/49073

摘要： A compact inductor comprises a coil, a coil-burying body, and a body for a closed magnetic circuit. The coil-burying body is a fired porous ceramic body having a first magnetic permeability, in which the coil is buried. In the coil-burying body, “a through-hole 12a passing through inside of the coil along an axis of the coil” is formed. The body for a closed magnetic circuit is a fired dense ceramic body having a second magnetic permeability greater than the first magnetic permeability. The body for a closed magnetic circuit is arranged closely/densely at an outer circumference portion of the coil-burying body and in the through-hole. A magnetic path is therefore formed mainly within the body for a closed magnetic circuit, and the magnetic flux density is reduced in an area close to the coil. Accordingly, an inductor having the excellent superimposed DC current characteristic is provided.

摘要翻译： 紧凑型电感器包括线圈，线圈掩埋体和用于闭合磁路的主体。 线圈埋体是具有第一磁导率的烧制多孔陶瓷体，其中线圈被埋置。 在线圈埋层体中形成有沿着线圈的轴线穿过线圈内部的通孔12a。 用于闭合磁路的本体是具有大于第一磁导率的第二磁导率的烧制致密陶瓷体。 用于闭合磁路的主体紧密/密集地布置在线圈埋入体的外周部分和通孔中。 因此，主要在体内形成用于封闭磁路的磁路，并且在靠近线圈的区域中磁通密度减小。 因此，提供具有优异的叠加DC电流特性的电感器。

公开(公告)号：US08512628B2

公开(公告)日：2013-08-20

申请号：US12691970

申请日：2010-01-22

申请人： Natsumi Shimogawa ,  Shuichi Ozawa ,  Nobuyuki Kobayashi

发明人： Natsumi Shimogawa ,  Shuichi Ozawa ,  Nobuyuki Kobayashi

IPC分类号： B28B1/14

CPC分类号： H01F41/0246 ,  B22F2998/10 ,  C04B35/265 ,  C04B35/638 ,  C04B35/82 ,  C04B2235/3267 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/6562 ,  C04B2235/9615 ,  C22C47/04 ,  C22C47/064 ,  H01F17/04 ,  H01F27/2823 ,  H01F2017/046 ,  H01F2017/048

摘要： A method for manufacturing a fired ceramic body including a metal wire wherein the metal wire is placed in a mold and then, a ceramic slurry having a heat-gelling characteristic or a thermoset characteristic is poured into the mold. Subsequently, the ceramic slurry is dried and hardened to form a ceramic-compact-before-fired, and then, the ceramic-compact-before-fired is fired. In this firing process, a degreasing of the ceramic compact is firstly performed, and thereafter, a temperature of the ceramic compact is increased up to a second temperature at which the metal wire is softened and the ceramic compact is fired at a second temperature increasing rate. The second temperature increasing rate is set at such a rate that a shrinkage ratio of the ceramic compact when the temperature of the ceramic compact reaches the second temperature is smaller than or equal to a predetermined threshold shrinkage ratio.

摘要翻译： 一种制造包括金属线的烧结陶瓷体的方法，其中将金属丝放置在模具中，然后将具有热凝胶特性或热固性特征的陶瓷浆料注入模具中。 随后，将陶瓷浆料干燥并硬化，从而形成烧制前的陶瓷 - 压坯，然后烧制陶瓷 - 压坯。 在该烧成工序中，首先进行陶瓷成形体的脱脂，然后将陶瓷成形体的温度升高至金属丝软化的第二温度，并且以第二升温速度烧结陶瓷成形体 。 第二升温速度设定为当陶瓷压块的温度达到第二温度时陶瓷压坯的收缩率小于或等于预定阈值收缩率的速率。

公开(公告)号：US20100194003A1

公开(公告)日：2010-08-05

申请号：US12691970

申请日：2010-01-22

申请人： Natsumi Shimogawa ,  Shuichi Ozawa ,  Nobuyuki Kobayashi

发明人： Natsumi Shimogawa ,  Shuichi Ozawa ,  Nobuyuki Kobayashi

IPC分类号： C04B35/64

CPC分类号： H01F41/0246 ,  B22F2998/10 ,  C04B35/265 ,  C04B35/638 ,  C04B35/82 ,  C04B2235/3267 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/6562 ,  C04B2235/9615 ,  C22C47/04 ,  C22C47/064 ,  H01F17/04 ,  H01F27/2823 ,  H01F2017/046 ,  H01F2017/048

摘要： A method for manufacturing a fired ceramic body including a metal wire wherein the metal wire is placed in a mold, and then, a ceramic slurry having a heat-gelling characteristic or a thermoset characteristic is poured into the mold. Subsequently, the ceramic slurry is dried and hardened to form a ceramic-compact-before-fired, and then, the ceramic-compact-before-fired is fired. In this firing process, a degreasing of the ceramic compact is firstly performed, and thereafter, a temperature of the ceramic compact is increased up to a second temperature at which the metal wire is softened and the ceramic compact is fired at a second temperature increasing rate. The second temperature increasing rate is set at such a rate that a shrinkage ratio of the ceramic compact when the temperature of the ceramic compact reaches the second temperature is smaller than or equal to a predetermined threshold shrinkage ratio.

摘要翻译： 一种制造包括金属丝的烧结陶瓷体的方法，其中将金属丝放置在模具中，然后将具有热凝胶特性或热固性特征的陶瓷浆料倒入模具中。 随后，将陶瓷浆料干燥并硬化，从而形成烧制前的陶瓷 - 压坯，然后烧制陶瓷 - 压坯。 在该烧成工序中，首先进行陶瓷成形体的脱脂，然后将陶瓷成形体的温度升高至金属线软化的第二温度，并且以第二升温速度烧结陶瓷成形体 。 第二升温速度设定为当陶瓷压块的温度达到第二温度时陶瓷压坯的收缩率小于或等于预定阈值收缩率的速率。

公开(公告)号：US20100194513A1

公开(公告)日：2010-08-05

申请号：US12691950

申请日：2010-01-22

申请人： Shuichi Ozawa ,  Natsumi Shimogawa ,  Katsuyuki Takeuchi ,  Yukio Aisaka

发明人： Shuichi Ozawa ,  Natsumi Shimogawa ,  Katsuyuki Takeuchi ,  Yukio Aisaka

IPC分类号： H01F5/00

CPC分类号： H01F17/0013 ,  H01F41/046 ,  H01F2017/002 ,  H01F2017/0066 ,  H05K1/165 ,  H05K3/4629 ,  H05K2201/083 ,  H05K2201/09672 ,  H05K2201/098

摘要： A layered inductor 10 is manufactured by layering “silver-based conductive layers” and “ferrite-based magnetic layers” and simultaneously firing these layers. The conductive layers are via-connected to form a helical coil 30. A shape of a cross sectional surface of the conductive layer, cut by a plane perpendicular to a longitudinal direction of each of the conductive layers is a substantial trapezoid shape, having an upper base and a lower base. A base angle θ of the trapezoid shape at both ends of the lower base is equal to or greater than 50° and is smaller than or equal to 80°.

摘要翻译： 通过层叠“银基导电层”和“铁氧体基磁性层”并同时烧制这些层来制造层状电感器10。 导电层通孔连接以形成螺旋线圈30.导电层的横截面形状由垂直于每个导电层的纵向的平面切割，呈大致梯形，具有上部 基地和较低的基地。 底角角度; 在下底座两端的梯形形状等于或大于50°并且小于或等于80°。

公开(公告)号：US20110121930A1

公开(公告)日：2011-05-26

申请号：US12884461

申请日：2010-09-17

申请人： Katsuyuki TAKEUCHI ,  Natsumi Shimogawa ,  Shuichi Ozawa

发明人： Katsuyuki TAKEUCHI ,  Natsumi Shimogawa ,  Shuichi Ozawa

IPC分类号： H01F27/02 ,  H01F41/04

CPC分类号： H01F17/04 ,  H01F41/0246 ,  H01F2017/048 ,  Y10T29/4902

摘要： The invention relates to a coil-buried type inductor. The inductor comprises a conductive coil, a first fired ceramics body arranged at least in an area along an inner periphery of the coil, and a second fired ceramics body arranged so as to surround the entire of the coil along with the first fired ceramics body. The first fired ceramics body has porosity equal to or larger than 40 percent and smaller than 70 percent.

摘要翻译： 本发明涉及一种线圈埋式电感器。 电感器包括导电线圈，至少布置在沿着线圈的内周的区域中的第一烧制陶瓷体以及与第一烧制陶瓷体一起围绕整个线圈布置的第二烧制陶瓷体。 第一次烧制的陶瓷体的孔隙率等于或大于40％且小于70％。

公开(公告)号：US08102234B2

公开(公告)日：2012-01-24

申请号：US12691950

申请日：2010-01-22

申请人： Shuichi Ozawa ,  Natsumi Shimogawa ,  Katsuyuki Takeuchi ,  Yukio Aisaka

发明人： Shuichi Ozawa ,  Natsumi Shimogawa ,  Katsuyuki Takeuchi ,  Yukio Aisaka

IPC分类号： H01F5/00

CPC分类号： H01F17/0013 ,  H01F41/046 ,  H01F2017/002 ,  H01F2017/0066 ,  H05K1/165 ,  H05K3/4629 ,  H05K2201/083 ,  H05K2201/09672 ,  H05K2201/098

摘要： A layered inductor is manufactured by layering “silver-based conductive layers” and “ferrite-based magnetic layers” and simultaneously firing these layers. The conductive layers are via-connected to form a helical coil. A shape of a cross sectional surface of the conductive layer, cut by a plane perpendicular to a longitudinal direction of each of the conductive layers is a substantial trapezoid shape, having an upper base and a lower base. A base angle θ of the trapezoid shape at both ends of the lower base is equal to or greater than 50° and is smaller than or equal to 80°.

摘要翻译： 通过层叠“银基导电层”和“铁氧体基磁性层”并同时烧制这些层来制造层状电感器。 导电层通孔连接形成螺旋线圈。 由垂直于每个导电层的纵向的平面切割的导电层的横截面的形状是具有上基部和下基部的实质梯形形状。 底角角度; 在下底座两端的梯形形状等于或大于50°并且小于或等于80°。

公开(公告)号：US08343375B2

公开(公告)日：2013-01-01

申请号：US12607207

申请日：2009-10-28

申请人： Nobuyuki Kobayashi ,  Shuichi Ozawa ,  Kei Sato

发明人： Nobuyuki Kobayashi ,  Shuichi Ozawa ,  Kei Sato

IPC分类号： H01F17/00 ,  H01F41/04 ,  C04B35/26

CPC分类号： C01G49/0018 ,  C01G49/0063 ,  C01P2002/32 ,  C01P2002/72 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/42 ,  C04B35/265 ,  C04B35/6263 ,  C04B35/62675 ,  C04B35/632 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6023 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/763 ,  H01F1/344 ,  H01F1/36 ,  H01F41/0246

摘要： A ferrite powder for producing a ferrite sintered body is provided, the ferrite powder having a median diameter D50 [μm] in a range from 0.1 to 0.8 μm, a degree of spinel formation in a range from 45 to 90%, and a remanent magnetization Br per unit mass [emu/g] satisfying the following formula after application of the maximum magnetic field of 15 kOe: 0.05≦Br≦2.0(ln.D50)+6.3. This ferrite powder produces a homogeneous ferrite sintered body having very few cracks by gel casting.

摘要翻译： 提供了一种用于制造铁氧体烧结体的铁氧体粉末，铁氧体粉末的中值粒径D50 [μm]在0.1-0.8μm的范围内，尖晶石形成程度在45-90％的范围内，剩余磁化强度 Br / nlE; 2.0（ln.D50）+6.3的最大磁场施加15kOe后的单位质量[emu / g]满足下式。 该铁氧体粉末通过凝胶铸造产生非常少的裂纹的均匀的铁氧体烧结体。

公开(公告)号：US20100127423A1

公开(公告)日：2010-05-27

申请号：US12607207

申请日：2009-10-28

申请人： Nobuyuki Kobayashi ,  Shuichi Ozawa ,  Kei Sato

发明人： Nobuyuki Kobayashi ,  Shuichi Ozawa ,  Kei Sato

IPC分类号： B29C39/18 ,  C04B35/30

CPC分类号： C01G49/0018 ,  C01G49/0063 ,  C01P2002/32 ,  C01P2002/72 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/42 ,  C04B35/265 ,  C04B35/6263 ,  C04B35/62675 ,  C04B35/632 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6023 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/763 ,  H01F1/344 ,  H01F1/36 ,  H01F41/0246

摘要： On producing a ferrite sintered body, there is used a ferrite powder having a median diameter D50 [μm] in a range from 0.1 to 0.8 μm, a degree of spinel formation in a range from 45 to 90%, and a remanent magnetization Br per unit mass [emu/g] satisfying the following formula after application of the maximum magnetic field of 15 kOe:_0.05≦Br≦2.0(ln.D50)+6.3. The above ferrite powder allows producing a homogeneous ferrite sintered body generating very few cracks by gel casting.

摘要翻译： 在制造铁氧体烧结体时，使用中值粒径D50 [μm]为0.1〜0.8μm的铁素体粉末，尖晶石形成程度为45〜90％，剩余磁化强度Br为 单位质量[emu / g]在施加15kOe的最大磁场后满足下列公式：_0.05＆nlE; Br＆nlE; 2.0（ln.D50）+6.3。 上述铁氧体粉末可以制造通过凝胶铸造产生非常少的裂纹的均匀的铁氧体烧结体。

公开(公告)号：US20110230329A1

公开(公告)日：2011-09-22

申请号：US13037746

申请日：2011-03-01

申请人： Shuichi Ozawa ,  Naoto Ohira ,  Kouichi Kondou

发明人： Shuichi Ozawa ,  Naoto Ohira ,  Kouichi Kondou

IPC分类号： C04B35/30

CPC分类号： C04B35/265 ,  C01G49/0063 ,  C01P2004/62 ,  C01P2006/12 ,  C04B35/62655 ,  C04B35/62695 ,  C04B2235/3203 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/602 ,  C04B2235/608 ,  C04B2235/72 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/94 ,  H01F1/344

摘要： The first invention relates to powders for producing a Ni—Cu—Zn system ferrite ceramics sintered body, comprising ferrite calcined powders and NiO powders, wherein the specific surface area of said ferrite calcined powders is within the range of 4.0 m2/g to 14.0 m2/g, the spinel included in said ferrite calcined powders is such that Ni does not solve, the composition of said spinel is such that Fe2O3 is within the range of 49.0 mol % to 60.0 mol % and the remaining comprises CuO and ZnO, and the ratio of ZnO relative to CuO in mole percent is within the range of 1.0 to 4.0.

摘要翻译： 第一发明涉及用于制造Ni-Cu-Zn系铁氧体陶瓷烧结体的粉末，其包括铁氧体煅烧粉末和NiO粉末，其中所述铁氧体煅烧粉末的比表面积在4.0m 2 / g至14.0m 2的范围内 / g，包含在所述铁氧体煅烧粉末中的尖晶石使得Ni不能解决，所述尖晶石的组成使得Fe 2 O 3在49.0mol％至60.0mol％的范围内，并且其余包含CuO和ZnO，并且 ZnO相对于CuO的摩尔百分数比在1.0〜4.0的范围内。