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    • 61. 发明授权
    • Rotary head assembly for magnetic recording and reproducing device
    • 用于磁记录和再现装置的旋转头组件
    • US4251840A
    • 1981-02-17
    • US4564
    • 1979-01-18
    • Teruo MaruyamaTakashi Ichiyanagi
    • Teruo MaruyamaTakashi Ichiyanagi
    • F16C17/10F16C17/08F16C33/10G11B5/53G11B15/60
    • F16C33/107F16C17/08F16C17/107G11B5/53
    • The present invention relates to a rotary head assembly for a magnetic recording and reproducing device such as VTR. A stationary center shaft is mounted on the side of a stationary cylinder while a rotary sleeve which is fitted over said stationary center shaft for rotation about the axis thereof is disposed on the side of a rotary cylinder. A lubricating oil is injected between the rotary sleeve and the stationary center shaft so that a space between the cylinders may be utilized so as to provide a hydraulic bearing portion. Thus, the rotary head assembly may be made compact in size and to a higher degree of accuracy. In addition, the thrust load carrying point of the hydraulic bearing portion is located on the side of the rotary cylinder, and the portion adjacent to the thrust load carrying point has a sealing arrangement or construction so as to prevent the leakage of lubricating oil and to stabilize the rotation of the rotary cylinder.
    • 本发明涉及一种用于诸如VTR的磁记录和再现装置的旋转磁头组件。 固定的中心轴安装在固定筒的侧面上,而安装在所述固定中心轴上以绕其轴线旋转的旋转套筒设置在旋转圆筒的侧面上。 在旋转套筒和固定中心轴之间注入润滑油,使得可以利用气缸之间的空间,以便提供液压轴承部分。 因此,可以使旋转头组件的尺寸和精度更高。 此外,液压轴承部的推力载荷点位于旋转筒的一侧,与推力承载点相邻的部分具有密封结构或结构,以防止润滑油的泄漏,并且 稳定旋转圆筒的旋转。
    • 69. 发明授权
    • Fluid rotating apparatus with plural drive motor synchronization system
    • 具有多个驱动电动机同步系统的流体旋转装置
    • US5348448A
    • 1994-09-20
    • US33755
    • 1993-03-18
    • Yoshihiro IkemotoTeruo Maruyama
    • Yoshihiro IkemotoTeruo Maruyama
    • F04C2/00F04C18/16F04C25/02F04C28/06F04C29/00F04B49/00H02P5/46
    • F04C29/0085
    • A fluid rotating apparatus includes non-circular rotors accommodated in a housing, rotary shafts having the rotors, bearings for rotatably supporting the shafts, a fluid suction and a fluid discharge ports formed in the housing, a positive displacement pump section formed of combination of the housing and rotors, and gears connected with the shafts having backlash set smaller than backlash between the rotors. The apparatus includes motors for independently driving the shafts, a device for detecting a rotating angle or speed of rotation of the motors, a unit for controlling the motors to synchronously rotate, a unit for detecting a current running in the motors, a unit for detecting a relative position of the shafts, and a rotation commanding unit, to which outputs from the motor current detecting unit and relative position detecting unit are inputted, for deciding whether or not a shift amount of the synchronous rotation is larger than a specified value based on the outputs of the motor current detecting unit and/or the relative position detecting unit, and outputting to the motor controlling unit a signal to decelerate one shaft when the rotation command unit decides that the shift amount of the synchronous rotation is larger than the value.
    • 流体旋转装置包括容纳在壳体中的非圆形转子,具有转子的旋转轴,用于可旋转地支撑轴的轴承,形成在壳体中的流体抽吸和流体排出口,由位移泵 外壳和转子,以及与具有小于转子之间的间隙的间隙的轴连接的齿轮。 该装置包括用于独立驱动轴的马达,用于检测马达的旋转角度或转速的装置,用于控制马达同步旋转的单元,用于检测马达中运行的电流的单元,用于检测马达的电流的单元 轴的相对位置和旋转指令单元,来自电动机电流检测单元和相对位置检测单元的输出被输入到其中,用于基于以下方式来决定同步旋转的偏移量是否大于指定值 马达电流检测单元和/或相对位置检测单元的输出,并且当旋转指令单元判定同步旋转的移动量大于该值时,向马达控制单元输出用于减速一个轴的信号。