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    • 1. 发明授权
    • Controlled radial magnetic bearing device
    • 受控径向磁轴承装置
    • US4686404A
    • 1987-08-11
    • US824697
    • 1986-01-10
    • Tsugito NakazekiShoji NanamiKoichi Okada
    • Tsugito NakazekiShoji NanamiKoichi Okada
    • F16C32/04F16C39/06H02K7/09
    • F16C32/0453F16C32/0489Y10T74/1275
    • A controlled radial magnetic bearing device which has an X-axis electromagnet and a Y-axis electromagnet provided on the X-axis and Y-axis perpendicular to each other in a plane normal to the axis of a rotary shaft, X-axis and Y-axis position sensors for detecting any displacement of the rotary shaft from its reference position, and X-axis and Y-axis control circuits for feeding the outputs of said position sensors back to the electromagnets to control them. It further includes a speed detector for detecting the speed of the rotary shaft, and an X-axis correction circuit for having a band-pass filter for extracting a reverse precession frequency component from the output of the Y-axis position sensor, a circuit for changing the output of the filter according to the output of the speed detector and an adder for adding the output of the changing circuit to the output of the X-axis position sensor, the output leading in phase by 90 degrees with respect to the reverse precession frequency component, and a Y-axis correction circuit having substantially the same structure as the X-axis correction circuit for and having a circuit for reversing the phase of the output of the X-axis position sensor, thereby attenuating the outputs of the X-axis and Y-axis control circuits with respect to the reverse precession frequency component and effectively attenuating the precession of the rotary shaft.
    • PCT No.PCT / JP85 / 00158 Sec。 371日期1986年1月10日 102(e)日期1986年1月10日PCT提交1985年4月2日PCT公布。 出版物WO85 / 05417 日期:1985年12月5日。一种控制径向磁轴承装置,其具有X轴和Y轴电磁体,该X轴电磁体和Y轴电磁体在与旋转轴线垂直的平面中彼此垂直的X轴和Y轴上 轴,X轴和Y轴位置传感器,用于检测旋转轴与其参考位置的任何位移;以及X轴和Y轴控制电路,用于将所述位置传感器的输出反馈回电磁体以进行控制。 还包括用于检测旋转轴的速度的速度检测器和用于具有用于从Y轴位置传感器的输出提取反向进动频率分量的带通滤波器的X轴校正电路, 根据速度检测器的输出改变滤波器的输出,以及用于将改变电路的输出与X轴位置传感器的输出相加的加法器,相对于逆向进动相位相差90度的输出 频率分量和Y轴校正电路,其具有与X轴校正电路基本相同的结构,并具有用于反转X轴位置传感器的输出的相位的电路,从而衰减X轴校正电路的输出, 轴向和Y轴控制电路相对于反向进动频率分量并有效地衰减旋转轴的进动。
    • 2. 发明授权
    • Hydrodynamic type bearing unit
    • 流体动力式轴承单元
    • US06431757B1
    • 2002-08-13
    • US09696669
    • 2000-10-26
    • Tsugito NakazekiKazuo Okamura
    • Tsugito NakazekiKazuo Okamura
    • F16C3206
    • F16C33/107F16C17/107F16C33/102
    • A hydrodynamic type bearing unit with enhanced moment load capacity. In the bearing unit, a radial bearing clearance and thrust bearing clearances are set at such widths that a tilted spindle member comes into contact at the outer periphery of its spindle with both axial ends of a radial bearing surface opposed thereto, as well as at the rims of both end faces of its flange portion with respective thrust bearing surfaces opposed thereto, so that the moment load can by supported by both the radial bearing part and the thrust bearing part. Specifically, the radial bearing clearance &dgr;R and the thrust bearing clearances &dgr;A are set in accordance with the expression D&dgr;R/L+&egr;≧&dgr;A≧D&dgr;R/L (where D is the diameter of the flange portion, L is the axial length of the radial bearing part, and &egr; is a machining error).
    • 具有增强的力矩载荷能力的流体动力型轴承单元。 在轴承单元中,径向轴承间隙和推力轴承间隙被设定为这样的宽度,使得倾斜的主轴构件在其主轴的外周处与其相对的径向支承表面的两个轴向端部以及 其凸缘部分的两个端面的边缘具有与其相对的相应的推力轴承表面,使得能够通过径向轴承部分和止推轴承部分两者支撑而承受力矩。 具体地,径向轴承间隙ΔR和止推轴承间隙ΔA根据公式DdeltaR / L + epsi = deltaA> = DdeltaR / L来设定(其中D是凸缘部分的直径,L是轴向长度 径向轴承部分和epsi是加工误差)。
    • 3. 发明授权
    • Centrifugal blood pump assembly
    • 离心血泵总成
    • US5947703A
    • 1999-09-07
    • US791560
    • 1997-01-31
    • Toshihiko NojiriTsugito NakazekiTeruaki Akamatsu
    • Toshihiko NojiriTsugito NakazekiTeruaki Akamatsu
    • A61M1/10F04D13/02F04D29/04F04D29/047F04D29/048F04D29/62F04B17/00B63H1/00F01D25/00F03B13/00
    • F04D29/047A61M1/101A61M1/1015A61M1/1036F04D13/026F04D13/027F04D13/0666F04D29/048F04D29/628F16C32/044F05B2240/515F16C2360/44Y10S415/90
    • A centrifugal blood pump assembly according to one aspect of the invention includes a housing, an impeller adapted to rotate within the housing for feeding blood, an impeller position control device, and an impeller rotation torque generating device. The impeller rotates without contacting the inner surface of the housing when the position control device and torque generating device are operative. Even when the position control device is inoperative, operation of the torque generating device enables rotation of the impeller while a blood flowpath is defined between the surface of the impeller facing the torque generating device and the inner surface of the housing. A centrifugal blood pump assembly according to another aspect of the invention involves a pump including a housing having blood inlet and outlet ports and an impeller adapted to rotate within the housing for feeding blood. The assembly also includes an uncontrolled magnetic bearing arrangement for the impeller, and controlled magnetic bearing arrangement for the impeller. The bearing arrangements are removably mounted to the pump.
    • 根据本发明的一个方面的离心式血液泵组件包括壳体,适于在壳体内旋转以供给血液的叶轮,叶轮位置控制装置和叶轮旋转扭矩产生装置。 当位置控制装置和扭矩产生装置可操作时,叶轮旋转而不接触壳体的内表面。 即使当位置控制装置不起作用时,扭矩产生装置的操作也能够在叶轮面向扭矩产生装置的表面与壳体的内表面之间限定血液流路的同时旋转叶轮。 根据本发明的另一方面的离心式血液泵组件涉及一种泵,其包括具有血液入口和出口端口的壳体,以及适于在壳体内旋转以供给血液的叶轮。 该组件还包括用于叶轮的不受控制的磁轴承装置和用于叶轮的受控磁轴承装置。 轴承装置可拆卸地安装在泵上。
    • 4. 发明授权
    • Fuel injection device for internal combustion engines
    • 内燃机燃油喷射装置
    • US4164923A
    • 1979-08-21
    • US710128
    • 1976-07-30
    • Kei KimataTsugito NakazekiSaburo Oshima
    • Kei KimataTsugito NakazekiSaburo Oshima
    • F02B75/02F02M69/14F02M69/46F02D1/00F02D3/04
    • F02M69/467F02M69/147F02B2075/027
    • The present invention relates to fuel injection device characterized by comprising a main body having an axial cylindrical bore, a fuel supply port, a plurality of fuel metering ports, and a plurality of fuel distributing ports communicating with said fuel metering ports; a rotor having an inlet port communicating with said fuel supply port in said main body, a single metering port associated with said metering ports in said main body, and a hole communicating with said two ports; means for driving said rotor for rotation in synchronism with the rotation of an engine; control means for axially sliding said rotor in unique association with the amount of suction air; and fuel supply means for supplying fuel to the fuel supply port in the main body through a pressure regulating valve, the arrangement being such that the length of time for communication between each metering port of the main body and the metering port of the rotor is controlled in connection with the r.p.m. of the engine and the amount of suction air, while the operation (total amount of suction air)/(engine r.p.m.) and the metering and distribution of fuel are performed.
    • 燃料喷射装置技术领域本发明涉及一种燃料喷射装置,其特征在于包括具有轴向圆柱形孔的主体,燃料供给口,多个燃料计量口以及与所述燃料计量口连通的多个燃料分配口。 转子,其具有与所述主体中的所述燃料供给口连通的入口端口,与所述主体中的所述计量口相关联的单个计量口,以及与所述两个端口连通的孔; 用于与发动机的旋转同步地驱动所述转子旋转的装置; 用于使所述转子轴向滑动的控制装置与吸入空气的量相关联; 以及用于通过压力调节阀向主体中的燃料供给口供给燃料的燃料供给装置,该装置使得主体的每个计量口与转子的计量口之间的连通时间被控制 与rpm相关 的发动机和吸入空气的量,同时执行(总吸入空气量)/(发动机转速)和燃料的计量和分配。
    • 6. 发明授权
    • Electric direct-acting actuator and electric brake device
    • 电动直动执行器和电动制动装置
    • US07810616B2
    • 2010-10-12
    • US11795008
    • 2006-01-12
    • Tsugito Nakazeki
    • Tsugito Nakazeki
    • F16D55/08
    • F16H25/2252F16D65/18F16D2121/24F16D2125/405F16H25/2427H02K7/06Y10T74/18568
    • An electric direct-acting actuator is proposed which can maintain a large power increasing function without mounting a separate speed reducer. A plurality of planetary rollers (7) are disposed between the radially outer surface of a rotor shaft (5) of an electric motor and the radially inner surface of an outer ring member (1) fixed in position around the rotor shaft (5) so as to be rotatable about the rotor shaft (5) and about their own axes when the rotor shaft (5) rotates. A helical rib is defined by a rib member (9) engaged in a helical groove (8) formed in the radially inner surface of the outer ring member (1). The helical rib is engaged in circumferential grooves (10) formed in the radially outer surface of each planetary roller (7) at the same pitch as the turns of the helical rib. Thus, the rotary motion of the rotor shaft (5) is converted to a linear motion of the planetary rollers (7), so that it is possible to ensure a large power increasing function without mounting a separate speed reducer.
    • 提出一种电动直动作动器,可以保持较大的功率增加功能,而无需安装单独的减速器。 多个行星辊(7)设置在电动机的转子轴(5)的径向外表面和固定在转子轴(5)周围的外圈构件(1)的径向内表面之间,因此 当转子轴(5)旋转时,可围绕转子轴(5)旋转并绕其自身的轴线旋转。 螺旋肋由接合在形成在外圈构件(1)的径向内表面中的螺旋槽(8)中的肋构件(9)限定。 螺旋肋以与螺旋肋的匝相同的间距接合在形成在每个行星辊(7)的径向外表面中的周向槽(10)中。 因此,转子轴5的旋转运动被转换为行星辊7的直线运动,从而可以在不安装单独的减速器的情况下确保大的功率增加功能。