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    • 1. 发明专利
    • Speed reduction unit
    • 减速单元
    • JP2008121717A
    • 2008-05-29
    • JP2006303147
    • 2006-11-08
    • Hitachi LtdNtn CorpNtn株式会社Univance Corp株式会社ユニバンス株式会社日立製作所
    • TAKARADA MINORUSAITO TAKAHIDEYAMAGATA SATORUHAMAI KYUGOYAMAMOTO DAISUKEOYAMA KAZUTOMURAKAMI KAZUTOSHISHIMIZU AKIRA
    • F16H57/021
    • PROBLEM TO BE SOLVED: To shorten the axial length of a speed reduction unit which is coaxially arranged at a motor. SOLUTION: This speed reduction unit comprises: a first shaft 1 connected to the motor M; a first gear 2 arranged at the external periphery of the first shaft 1; a second gear 3 engaged with the first gear 2; a second shaft 4 which supports the second gear 3; a third gear 5 which is rotatably supported by the second shaft 4, and arranged at the motor M side with respect to the second gear 3; a clutch 6 which switches the transmission and the disconnection of rotation between the second shaft 4 and the third gear 5; and a differential device 7 which distributes the rotation of the third gear 5 to right and left wheels. The speed reduction gear also reduces the rotation of the motor M in speed in a connection with the clutch 6, and transmits the reduced rotation to the right and left wheels. An outer ring 30 of at least one bearing among bearings 37, 39 which rotatably support the end of the first shaft 1, and bearings 29, 40 which rotatably support the end of the second shaft 4 is constituted of a large-diameter part 31 and a small-diameter part 32 which is smaller than the large-diameter part 31 in outside diameter, and the outer ring 30 is fixed by pressing down the end face of the large-diameter part 31 by using a plate 35. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:缩短同轴布置在电动机上的减速单元的轴向长度。 解决方案:该减速单元包括:连接到电动机M的第一轴1; 布置在第一轴1的外周的第一齿轮2; 与第一齿轮2啮合的第二齿轮3; 支撑第二齿轮3的第二轴4; 由第二轴4可旋转地支撑并相对于第二齿轮3布置在马达M一侧的第三齿轮5; 离合器6,其在第二轴4和第三齿轮5之间切换变速器和旋转的切断; 以及将第三齿轮5的旋转分配到左右车轮的差动装置7。 减速装置还能够减小与离合器6连接的马达M的旋转速度,并将减速旋转传递到左右车轮。 可旋转地支撑第一轴1的端部的轴承37,39中的至少一个轴承的外圈30和可旋转地支撑第二轴4的端部的轴承29,40由大直径部31和 小直径部分32比外径大的直径部分31小,外环30通过使用板35向下压大直径部分31的端面而固定。 (C)2008,JPO&INPIT
    • 2. 发明专利
    • Rotation transmission device
    • 旋转传动装置
    • JP2008121715A
    • 2008-05-29
    • JP2006303102
    • 2006-11-08
    • Hitachi LtdNtn CorpNtn株式会社Univance Corp株式会社ユニバンス株式会社日立製作所
    • YAMAGATA SATORUTAKARADA MINORUSAITO TAKAHIDEHAMAI KYUGOYAMAMOTO DAISUKEOYAMA KAZUTOMURAKAMI KAZUTOSHISHIMIZU AKIRA
    • F16D41/08F16D27/112
    • PROBLEM TO BE SOLVED: To provide a rotation transmission device constructed to be highly reliable, resistant to bending moment, and compact lengthwise in the axial direction. SOLUTION: A two-way clutch 10 is incorporated between a cam ring 1 and an outer ring 3, and an electromagnetic clutch 20 is attached to the two-way clutch 10 for controlling the engagement/disengagement of the two-way clutch 10. The electromagnetic clutch 20 consists of an armature 21 prevented from rotating by a cage 14 of the two-way clutch 10 and movable in the axial direction, a rotor guide 22 fitted to the outer periphery of the opening end of the outer ring 3, a rotor 23 pressed into the other end of the rotor guide 22 and opposed to the armature 21 in the axial direction, and an electromagnet 24 opposed to the rotor 23 in the axial direction. The rotor guide 22 is pressed into the outer periphery of the opening end of the outer ring 3, and the rotor guide 22 and the outer ring 3 are prevented from rotating by fitting a protruded portion 30 provided at the opening end of the outer ring 3 to a recessed portion 29 formed in the rotor guide 22. The three rotation preventing portions are provided at equal-angle positions in the peripheral direction. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种构造成高度可靠,耐弯曲力矩并且在轴向方向上沿纵向紧凑的旋转传动装置。 解决方案:双向离合器10结合在凸轮环1和外圈3之间,电磁离合器20安装在双向离合器10上,用于控制双向离合器的接合/分离 电磁离合器20由防止由双向离合器10的保持架14沿轴向移动的电枢21,与外圈3的开口端的外周配合的转子引导件22 压入转子引导件22的另一端并沿轴向与电枢21相对的转子23以及与转子23轴向相对的电磁体24。 转子引导件22被压入外圈3的开口端的外周,并且通过装配设置在外圈3的开口端的突出部分30来防止转子引导件22和外圈3旋转 到形成在转子引导件22中的凹部29.三个防旋转部分沿圆周方向设置在等角位置。 版权所有(C)2008,JPO&INPIT
    • 8. 发明专利
    • Power conversion apparatus
    • 功率转换装置
    • JP2012165495A
    • 2012-08-30
    • JP2011021925
    • 2011-02-03
    • Hitachi Ltd株式会社日立製作所
    • OYAMA KAZUTOFURUKAWA KIMIHISAMIYAZAKI HIDEKIMITSUI TOSHISADANISHIGUCHI SHINGO
    • H02P27/06H02M7/48
    • PROBLEM TO BE SOLVED: To provide a power conversion apparatus that suppresses switching loss.SOLUTION: In a power conversion apparatus 140, a control circuit 172 generates a PHM pulse indicating a pulse waveform of a corresponding electrical angle depending on a rotational state of a motor generator 192 for each of U, V and W phases. Any one of the U, V and W phases which has a different PHM pulse voltage value from the other two phases is identified by the generated PHM pulses for the respective phases, the PHM pulse voltage value of the identified one phase is inverted at the period of a predetermined zero vector trigger signal, and a zero-vector-rearranged PHM pulse signal based on the inverted PHM pulse and the PHM pulses for the other two phases is output as a control signal to a driver circuit 174.
    • 解决的问题:提供抑制开关损耗的电力转换装置。 解决方案:在功率转换装置140中,控制电路172根据U,V和W相中的每一个的电动发电机192的旋转状态产生指示对应的电角度的脉搏波形的PHM脉冲。 具有与其他两相不同的PHM脉冲电压值的U,V和W相中的任何一个由各相的所生成的PHM脉冲识别,所识别的一相的PHM脉冲电压值在该周期 的预定零矢量触发信号,以及基于反相PHM脉冲的零矢量重新布置的PHM脉冲信号和用于其他两相的PHM脉冲作为控制信号输出到驱动器电路174.版权所有: (C)2012,JPO&INPIT
    • 9. 发明专利
    • Rotary electric machine
    • 旋转电机
    • JP2009142084A
    • 2009-06-25
    • JP2007316398
    • 2007-12-06
    • Hitachi Ltd株式会社日立製作所
    • YOSHIDA KENICHISUWA TOKIHITOOYAMA KAZUTOSHIMIZU HISAYAUMEZAKI YOSUKE
    • H02K9/06H02K5/08H02K9/02H02K11/00
    • H02K9/06H02K11/048
    • PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of lowering the temperature of an inverter device even when there is no cooling air from an air blower. SOLUTION: A rotary electric machine body 40 has a rotor 4 with the air blower, a stator 1 and housings 2 and 3. The inverter device 30 has a case 14 and a plurality of switching semiconductor devices 15 for controlling power. The rotary electric machine body 40 and the inverter device 30 are unified by connecting the case 14 to the housings 3 and cooling air circulation by the rotation of the air blower 12a cools the inverter device 30 and flows into the housings. Part of the case 14 is arranged between the rotary electric machine body 40 and the switching semiconductor devices 15 for controlling power, and suppresses a heat radiated (or irradiated) by the rotary electric machine body 40 from reaching the switching semiconductor devices 15 for controlling power. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供即使在没有来自鼓风机的冷却空气的情况下也能够降低逆变器装置的温度的旋转电机。 解决方案:旋转电机主体40具有带有鼓风机的转子4,定子1和壳体2和3.逆变器装置30具有用于控制电力的壳体14和多个开关半导体装置15。 旋转电机体40和逆变器装置30通过将壳体14连接到壳体3而被统一,并且通过鼓风机12a的旋转的冷却空气循环冷却逆变器装置30并流入壳体。 壳体14的一部分设置在旋转电机主体40和用于控制电力的开关半导体装置15之间,并且抑制由旋转电机体40辐射(或照射)的热量到达用于控制功率的开关半导体器件15 。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Power converter for vehicle
    • 车用功率转换器
    • JP2009106046A
    • 2009-05-14
    • JP2007274581
    • 2007-10-23
    • Hitachi Ltd株式会社日立製作所
    • SUWA TOKIHITOOYAMA KAZUTOKUNII KEIJISHIMIZU HISAYA
    • H02M7/48
    • PROBLEM TO BE SOLVED: To provide a power converter for vehicle capable of reducing a height to the greatest extent possible. SOLUTION: A power module 103 having a semiconductor device is placed on a plane on a dissipation portion 102 on the housing inside side and a smoothing capacitor 104 electrically connected with the semiconductor device is placed on a plane of the housing inside one stage lower than a plane on which the power module 103 is placed. Next, a printed board 105 mounted with a control circuit is disposed on the opposite side to the placement side relative to planes of the power module 103 and the smoothing capacitor 104 in the inside of the housing. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供能够最大程度地降低高度的车辆用电力转换器。 解决方案:具有半导体器件的电源模块103被放置在壳体内侧的散热部分102上的平面上,并且与半导体器件电连接的平滑电容器104被放置在壳体的一个平面内的一个 低于放置电源模块103的平面。 接下来,安装有控制电路的印刷电路板105相对于壳体内部的功率模块103和平滑电容器104的平面设置在放置侧的相对侧。 版权所有(C)2009,JPO&INPIT