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    • 2. 发明授权
    • Laminated transformer
    • 层压变压器
    • US5655287A
    • 1997-08-12
    • US530821
    • 1995-09-20
    • Tomoaki Ushiro
    • Tomoaki Ushiro
    • H01F10/08H01F27/28H01F30/00H01F30/10H01F41/04H01F3/02H01F7/06
    • H01F27/2804H01F30/10H01F41/043H01F2027/2809Y10T29/49055Y10T29/49078Y10T29/49126Y10T29/49789
    • Two parts of magnetic layers are placed so as to clamp a coil forming unit consisting of an alternated laminate of non-magnetic layers and electrode layers. The coil forming unit is surrounded by the magnetic body to form a closed magnetic circuit. When manufacturing the laminated transformer, a plurality of sets of U-shaped electrodes are deposited on non-magnetic green sheets. Then, the non-magnetic green sheets are laminated to form the coil forming unit consisting of the alternated laminate of the non-magnetic layers and the electrode layers. Magnetic green sheets are laminated thereto and clamp the non-magnetic green sheets therebetween to form a laminate. The laminate is pressed and additional magnetic body portions are formed in the center and on the side faces of the coil forming units. The laminate is pressed and cut into green elements. The green elements are sintered into monolithic bodies of the laminated transformer.
    • 放置两层磁性层以夹紧由非磁性层和电极层的交替叠层组成的线圈形成单元。 线圈形成单元被磁体包围以形成闭合磁路。 当制造层压变压器时,在非磁性生片上沉积多组U形电极。 然后,非磁性生片被层叠,形成由非磁性层和电极层的交替叠层构成的线圈形成单元。 将磁性生片层压到其上并将非磁性生片夹在其间以形成层压体。 层叠体被压制,并且在线圈成形单元的中心和侧面形成附加的磁性体部分。 将层压板压制成绿色元件。 绿色元件被烧结成层压变压器的单块体。
    • 6. 发明授权
    • Laminated chip common mode choke coil
    • 叠层芯片共模扼流圈
    • US5250923A
    • 1993-10-05
    • US997393
    • 1992-12-28
    • Tomoaki UshiroToshio KawabataDaiji KonoHisato Oshima
    • Tomoaki UshiroToshio KawabataDaiji KonoHisato Oshima
    • H01F17/00H01F27/32H01F37/00H01F27/30
    • H01F17/0013H01F2017/0093
    • A conductor pattern for forming coils and lead-out electrodes which are led out from the coils are formed on a magnetic substance sheet. Furthermore, said magnetic substance sheet is provided with through-holes for connecting the conductor patterns. The magnetic substance sheets disposed respectively just over and just under the conductor pattern that becomes the lead-out electrodes are coated with non-magnetic material paste. A laminated chip common mode choke coil is produced by laminating these magnetic substance sheets and baking them integrally and thereafter forming external electrodes. The non-magnetic material diffuses into the magnetic substance sheet by baking the lamination of the magnetic substance sheets, and the permeability of that portion becomes low. Therefore, the magnetic reluctance around the lead-out electrode becomes high, thus reducing leakage flux around that portion. Thereby, coupling between two coils formed in the choke coil becomes good.
    • 用于形成从线圈引出的线圈和引出电极的导体图案形成在磁性物质片上。 此外,所述磁性物质片设置有用于连接导体图案的通孔。 分别设置在成为引出电极的导体图案正上方且正好在其下方的磁性物质片被非磁性材料糊涂覆。 通过层叠这些磁性物质片并一体地烘烤它们,然后形成外部电极来制造层叠芯片共模扼流线圈。 非磁性材料通过烘焙磁性物质片的层叠而扩散到磁性物质片中,并且该部分的磁导率变低。 因此,引出电极周围的磁阻变高,从而减少该部分附近的漏磁通。 因此,形成在扼流线圈中的两个线圈之间的耦合变得良好。