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    • 1. 发明授权
    • Valve operating system in internal combustion engine
    • 内燃机阀门操作系统
    • US5941201A
    • 1999-08-24
    • US914993
    • 1997-08-20
    • Yasuo ShimizuMitsuhito YamazakiKenji HiroseAtsushi UmemotoKouichi Ikoma
    • Yasuo ShimizuMitsuhito YamazakiKenji HiroseAtsushi UmemotoKouichi Ikoma
    • F01L9/04F16K31/06
    • F01L9/04
    • A valve operating system for an internal combustion engine includes a valve-opening electromagnet and a valve-closing electromagnet for exhibiting an electromagnetic force for attracting an armature to operate an engine valve, and a valve-opening resilient means and a valve-closing resilient means for maintaining the armature at a predetermined neutral position during deenergization of the electromagnets. In each electromagnet, a coil is inserted between inner and outer yokes which are disposed in the form of a double-cylinder such that they open at their ends opposed to the armature and are magnetically coupled to each other at their ends opposite from the armature, and the coil is positioned so that the coil protrudes from at least one of the yokes toward the armature. The armature has an annular accommodating portion provided in a surface thereof opposed to each the electromagnets and capable of accommodating that portion of the coil which protrudes from the yoke. With such a structure, it is possible to increase the electromagnetic attracting force of each of the electromagnets and to enhance the performance of the engine.
    • 一种用于内燃机的气门操作系统包括一个开启电磁铁和一个用于显示用于吸引电枢操作发动机气门的电磁力的闭阀电磁铁,以及一个开阀弹性装置和一个闭阀弹性装置 用于在电磁体断电期间将衔铁保持在预定的中立位置。 在每个电磁体中,线圈被插入在两个圆柱体形式的内轭铁和外轭铁之间,使得它们在与电枢相对的端部处开口,并且在与电枢相对的端部处彼此磁耦合, 并且线圈被定位成使得线圈从至少一个轭向着电枢突出。 电枢具有设置在与每个电磁体相对的表面中的环形容纳部分,并且能够容纳从轭架突出的线圈部分。 通过这样的结构,能够提高各电磁铁的电磁吸引力,提高发动机的性能。
    • 2. 发明授权
    • Displacement detecting device
    • 位移检测装置
    • US06633157B1
    • 2003-10-14
    • US09714358
    • 2000-11-16
    • Toshihiro YamakiKenji AbeKouichi IkomaYasuo ShimizuMinoru Nakamura
    • Toshihiro YamakiKenji AbeKouichi IkomaYasuo ShimizuMinoru Nakamura
    • G01B714
    • G01D5/145F01L9/04G01B7/023Y10T137/8242
    • Displacement of a mechanical element is accurately detected by a simple and inexpensive structure. To provide displacement detecting device including: a mechanical element capable of being displaced; a magnet connected to the mechanical element and magnetized in displacement direction of the mechanical element; and a magnetic sensor for detecting a magnetic flux generated by the magnet and outputting a sensor output corresponding to a detected magnetic-flux value, so as to detect displacement of the mechanical element in accordance with the sensor output. In one embodiment, a Hall element is used as the magnetic sensor and the magnet longer than distance of movement of the mechanical element is used. Thus, an output having a linear relation with displacement of the mechanical element is obtained, and detection of the displacement is easily implemented. The displacement detecting device can be applied to an actuator of intake/exhaust valves of an engine. In another embodiment, a magnetic material provided between the Hall element and a spring to reduce the disturbance caused by the spring. Moreover, a transfer shaft connected to the intake/exhaust valve is made of a non-magnetic material or a material having characteristics close to the non-magnetic material to reduce the effect of leakage flux.
    • 通过简单且廉价的结构精确地检测出机械元件的位移。 提供位移检测装置,包括:能够移位的机械元件; 连接到所述机械元件并在所述机械元件的位移方向上被磁化的磁体; 以及磁传感器,用于检测由磁体产生的磁通量并输出对应于检测磁通值的传感器输出,以便根据传感器输出检测机械元件的位移。 在一个实施例中,使用霍尔元件作为磁传感器,并且使用长于机械元件的移动距离的磁体。 因此,获得与机械元件的位移具有线性关系的输出,并且易于实现位移的检测。 位移检测装置可以应用于发动机的进气/排气阀的致动器。 在另一个实施例中,设置在霍尔元件和弹簧之间的磁性材料以减少由弹簧引起的干扰。 此外,连接到进/排气门的传送轴由非磁性材料或具有接近非磁性材料的特性的材料制成,以减少漏磁通的影响。
    • 5. 发明授权
    • Motor control device and electric steering system
    • 电机控制装置和电动转向系统
    • US08670904B2
    • 2014-03-11
    • US12937485
    • 2009-05-28
    • Atsuhiko YonedaYasuo Shimizu
    • Atsuhiko YonedaYasuo Shimizu
    • G06F17/00G06F19/00B62D6/00G08B1/06
    • B62D5/0484B62D5/046B62D5/049H02P6/185H02P29/032
    • A motor control device includes: a rotation angle detection portion that detects a rotation angle of a motor and outputs a rotation angle signal; an abnormal condition detection portion that detects the presence or absence of an abnormal condition of the rotation angle detection portion; a rotation angle estimation portion that estimates the rotation angle of the motor and outputs an estimate rotation angle signal; and a driving control portion that controls driving of the motor on the basis of the rotation angle signal, which is output from the rotation angle detection portion, when the abnormal condition detection portion does not detect an abnormal condition of the rotation angle detection portion, and controls driving of the motor on the basis of the estimate rotation angle signal, which is output from the rotation angle estimation portion, when the abnormal condition detection portion detects an abnormal condition of the rotation angle detection portion.
    • 电动机控制装置包括:旋转角度检测部,其检测电动机的旋转角度并输出旋转角度信号; 异常状态检测部,其检测所述旋转角度检测部的异常状况的有无; 旋转角度估计部,其估计所述电动机的旋转角度并输出估计旋转角度信号; 以及驱动控制部,当所述异常状态检测部未检测到所述旋转角度检测部的异常状态时,基于从所述旋转角度检测部输出的旋转角度信号来控制所述电动机的驱动,以及 当异常状态检测部检测到旋转角度检测部的异常状况时,基于从旋转角度估计部输出的估计旋转角度信号来控制电动机的驱动。
    • 7. 发明授权
    • Worm wheel
    • 蜗轮
    • US08646352B2
    • 2014-02-11
    • US13505350
    • 2010-10-20
    • Yosuke TanakaYasuo ShimizuAtsuhiko Yoneda
    • Yosuke TanakaYasuo ShimizuAtsuhiko Yoneda
    • F16H55/12
    • F16H55/06B62D5/0409F16H55/22F16H2055/065
    • Provided is a worm wheel that allows the residual stress in the plastic gear forming member thereof to be reduced, and suited for compact design. The worm wheel comprises a metallic core member (30) and a plastic gear forming member (20) formed on an outer periphery of the core member. In particular, the core member includes a boss portion (31) defining a pivot portion, an intermediate portion (32) extending radially from the outer periphery of the boss portion, and a cylindrical portion (33) connected to a radially outer end of the intermediate portion and having the gear forming member molded thereon coaxially with the boss, the cylindrical portion being formed with through holes (34) or cutouts (36) passed radially therethrough.
    • 提供一种能够减小塑料齿轮形成构件中的残余应力的蜗轮,适用于紧凑的设计。 蜗轮包括金属芯构件(30)和形成在芯构件的外周上的塑料齿轮形成构件(20)。 特别地,芯部件包括限定枢转部分的凸起部分(31),从凸起部分的外周径向延伸的中间部分(32)和连接到凸起部分的径向外端的圆柱形部分(33) 中间部分并且具有与凸台同轴成型的齿轮形成构件,圆柱形部分形成有径向通过的通孔(34)或切口(36)。