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    • 2. 发明授权
    • Lens driving mechanism for optical pickup and optical disc apparatus
    • 用于光学拾取器和光盘装置的透镜驱动机构
    • US08341657B2
    • 2012-12-25
    • US12542078
    • 2009-08-17
    • Tatsuya YamasakiYoshihiro SatoSeiichi KatoKatsuhiko KimuraTakahiro YamaguchiYoshiro KonishiHidenao Saito
    • Tatsuya YamasakiYoshihiro SatoSeiichi KatoKatsuhiko KimuraTakahiro YamaguchiYoshiro KonishiHidenao Saito
    • G11B7/135
    • G11B7/08582
    • An optical pickup, mounting a lens actuator 101 thereon, the lens actuator comprises: a lens 1 having an optical axis in direction in parallel with an optical disc; a holder 2, which holds the lens thereon; a first guide shaft 3 holding the holder, so as to regulate the holder to change a position thereof, into an inner surface direction of a surface having the optical axis of the lens as a normal line vector thereof; a second guide shaft 4, which regulates the holder to change the position thereof, into a normal line vector of an optical disc; and a reed screw, which moves the holder into direction of the optical axis of the lens, wherein a distance between the optical axis of the lens and the optical disc, a distance between a central axis of the first guide shaft and the optical disc, and a distance between a central axis of the second guide shaft and the optical disc are lager than a distance between a central axis of the reed screw and the optical disc.
    • 在其上安装透镜致动器101的光学拾取器,透镜致动器包括:具有与光盘平行的方向的光轴的透镜1; 在其上保持透镜的保持器2; 保持保持器的第一引导轴3,以将保持器的位置调整为具有透镜的光轴的表面的内表面方向作为其法线矢量; 第二引导轴4,其将保持器改变其位置,调节成光盘的法线矢量; 以及将保持器移动到透镜的光轴的方向的簧片螺钉,其中透镜的光轴与光盘之间的距离,第一引导轴的中心轴线与光盘之间的距离, 并且第二引导轴的中心轴线与光盘之间的距离大于簧片螺钉的中心轴线与光盘之间的距离。
    • 7. 发明授权
    • Electric linear motion actuator and electric brake system
    • 电动直线运动执行器和电动制动系统
    • US08579090B2
    • 2013-11-12
    • US13122569
    • 2009-10-01
    • Tatsuya Yamasaki
    • Tatsuya Yamasaki
    • F16D55/08F16H1/34
    • F16H25/20F16D65/18F16D2121/24F16D2125/40F16D2125/48F16D2125/50F16H25/2252Y10T74/18568Y10T74/18664Y10T74/19795
    • In an electric linear motion actuator for transmitting torque of a rotary shaft (4) to planetary rollers (7) and thus to a linearly driven output member constituted by an outer race member (5), axial movement of a carrier (6) supporting the planetary rollers (7) is restricted, and the outer race member (5) is axially slidably fitted in a radially inner surface of a cylindrical portion (1a) of a housing (1) and is rotationally fixedly coupled to an object to be driven via keys (25) The planetary rollers (7) have their radially inner surfaces rotatably supported on respective support pins (6c) of the carrier (6), and are radially inwardly biased by radial compression ring springs (21) wound around the support pins (6c) so as to envelop the support pins. The planetary rollers (7) are thus pressed against the radially outer surface of the rotary shaft (4).
    • 在用于将旋转轴(4)的扭矩传递到行星辊(7)并且因此传递到由外圈构件(5)构成的线性驱动的输出构件的电动直线运动致动器中,支撑 行星辊(7)受到限制,外座圈构件(5)可轴向滑动地嵌合在壳体(1)的圆柱形部分(1a)的径向内表面中,并且经由 键(25)行星滚子(7)的径向内表面可旋转地支撑在托架(6)的相应的支撑销(6c)上,并且通过围绕支撑销的径向压缩弹簧(21)径向向内偏置 6c),以便包围支撑销。 因此,行星辊(7)被压靠在旋转轴(4)的径向外表面上。