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    • 23. 发明授权
    • Multi-layer piezoelectric element
    • 多层压电元件
    • US08004155B2
    • 2011-08-23
    • US13051920
    • 2011-03-18
    • Shigenobu Nakamura
    • Shigenobu Nakamura
    • H01L41/083
    • H01L41/0471F02M51/0603H01L41/0472H01L41/0477
    • A multi-layer piezoelectric element of high durability wherein the internal electrodes and the external electrodes do not break even when operated continuously over a long period of time under high electric field and high pressure is provided. The first multi-layer piezoelectric element according to the present invention comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, and the external electrodes include an electrically conductive material and glass and is formed from a porous electrically conductive material that has a three-dimensional mesh structure.
    • 一种高耐久性的层叠型压电元件,其特征在于,即使在高电场和高压下,长时间连续运转,内部电极和外部电极也不会断裂。 根据本发明的第一层叠型压电元件包括​​通过将压电层和内部电极彼此交替堆叠而形成的堆叠以及形成在堆叠的第一侧面和第二侧面上的外部电极,其中, 相邻的内部电极连接到形成在第一侧面上的外部电极,另一个内部电极连接到形成在第二侧面上的外部电极,外部电极包括导电材料和玻璃,并由多孔 具有三维网格结构的导电材料。
    • 26. 发明授权
    • Alternating current generator with improved frame structure
    • 具有改进框架结构的交流发电机
    • US07759830B2
    • 2010-07-20
    • US11896872
    • 2007-09-06
    • Shigenobu NakamuraYoshiki TanMasatoshi KoumuraAkihito Koike
    • Shigenobu NakamuraYoshiki TanMasatoshi KoumuraAkihito Koike
    • H02K9/28
    • H02K11/046H02K5/18H02K9/06
    • In an alternating-current generator, an end wall of a frame is provided with a plurality of fin supports separately arranged on the outer surface of the end wall. The cooling fin is mounted on the plurality of fin supports. The end wall is provided with a plurality of reinforcements each arranged between a corresponding one of the plurality of fin supports and another one thereof and each configured to reinforce a rigidity of a portion of the end wall. The corresponding one of the plurality of fin supports and another one thereof are adjacent to each other in a circumferential direction of the axis of the rotor. The rigidity-reinforced portion of the end wall is located between the corresponding one of the plurality of fin supports and another one thereof.
    • 在交流发电机中,框架的端壁设置有分开布置在端壁的外表面上的多个翅片支撑件。 冷却翅片安装在多个翅片支撑件上。 端壁设置有多个加强件,每个加强件均布置在多个翅片支撑件中的相应一个翅片支撑件和另一个翼片支撑件中的另一个之间,并且每个加强件构造成加强端壁的一部分的刚度。 多个翅片支架中的相应的一个翅片支撑件和另一个翅片支架在转子的轴线的圆周方向上彼此相邻。 端壁的刚性增强部分位于多个翅片支撑件中的相应一个和另一个翅片支撑件之间。
    • 29. 发明申请
    • Vehicle alternator with improved operation reliability
    • 车辆交流发电机具有提高的运行可靠性
    • US20080061652A1
    • 2008-03-13
    • US11812912
    • 2007-06-22
    • Kazuhiko YamamuroShigenobu NakamuraHiroki Yoshimura
    • Kazuhiko YamamuroShigenobu NakamuraHiroki Yoshimura
    • H01R39/38H01R39/40H02K5/14H02K9/28
    • H02K5/141H02K9/28
    • An alternator for a vehicle is disclosed as having front and rear frames supporting a stator having a stator winding, a rotor fixedly carried on a rotary shaft and rotatably disposed inside the stator while having a field winding, a bush unit accommodating brushes held in sliding contact with slip rings formed on the rotary shaft, and a brush-wear particle collecting section for collecting brush-wear particles resulting from sliding contact between the brushes and the slip rings. In one embodiment, the bush unit includes a bush holder holding the bushes and a sealing plate member having the brush-wear particle collecting section. In another embodiment, the rear frame carries a protective cover formed with the brush-wear particle collecting section. In a further embodiment, the rotary shaft carries thereon brush-cooling means formed adjacent to the slip rings for creating an air stream to cool the brushes.
    • 公开了一种用于车辆的交流发电机,其具有支撑具有定子绕组的定子的前框架和后框架,固定地承载在旋转轴上并且可旋转地设置在定子内部的转子,同时具有励磁绕组,保持滑动接触的刷子的衬套单元 具有形成在旋转轴上的滑环,以及用于收集由刷子和滑环之间的滑动接触而产生的刷磨损颗粒的刷磨损颗粒收集部。 在一个实施例中,衬套单元包括保持衬套的衬套保持器和具有刷磨损颗粒收集部分的密封板构件。 在另一个实施例中,后框架承载由刷磨损颗粒收集部分形成的保护罩。 在另一个实施例中,旋转轴承载有与滑环相邻形成的刷子冷却装置,用于产生气流以冷却刷子。
    • 30. 发明申请
    • Rotary electric machine for vehicles
    • 车用旋转电机
    • US20070228866A1
    • 2007-10-04
    • US11240566
    • 2005-10-03
    • Shigenobu Nakamura
    • Shigenobu Nakamura
    • H02K1/22
    • H02K21/044
    • An on-vehicle rotary electric machine, such as AC generator, is provided. The machine comprises a rotary shaft, a pole core, plural magnetic poles, plural permanent magnets, and plural holding members. The magnetic poles are located at intervals in a circumferential direction and passing magnetic flux between two mutually-adjacent of the magnetic poles. Each permanent magnet intervenes between the two magnetic poles and is magnetized to reduce leakage of the magnetic flux to be passed. Each holding member holds each permanent magnet between the two magnetic poles. Each holding member is secured on the two magnetic poles and has a first plate portion enclosing a radially outer surface of each permanent magnet and two second plate portions enclosing side surfaces of each permanent magnet. The two second plate portions are rigidly coupled to the first plate portion and are lower in rigidity than the first plate portion.
    • 提供了诸如AC发电机的车载旋转电机。 该机器包括旋转轴,极芯,多个磁极,多个永磁体和多个保持构件。 磁极沿圆周方向间隔设置,并在两个相邻的磁极之间通过磁通。 每个永磁体介于两个磁极之间并被磁化以减少要通过的磁通量的泄漏。 每个保持构件将每个永磁体保持在两个磁极之间。 每个保持构件固定在两个磁极上,并且具有包围每个永磁体的径向外表面的第一板部分和封闭每个永磁体的侧表面的两个第二板部分。 两个第二板部分刚性地联接到第一板部分并且刚性低于第一板部分。