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    • 5. 发明申请
    • ELECTRIC POWER STEERING SYSTEM
    • 电力转向系统
    • US20110048839A1
    • 2011-03-03
    • US12861446
    • 2010-08-23
    • Toshihiro ASAKURATakashi HARA
    • Toshihiro ASAKURATakashi HARA
    • B62D5/04
    • B62D5/0427B62D5/0448
    • In an electric power steering system, a ball screw nut (23) of a ball screw device that drives a rack shaft is screwed to an axial end portion (6a) of a motor shaft (6) when a threaded portion (31) of a hollow threaded shaft (30) formed at an axial end portion (23a) of the ball screw nut (23) is screwed to a threaded portion (32) formed in the inner periphery of a motor shaft (6). A flange member (33) that is larger in diameter than the ball screw nut (23) is fitted to the outer periphery of the axial end portion (6a) of the motor shaft (6). The flange member (33) is formed in such a manner that when the rotation of the flange member (33) is restricted, the rotation of the ball screw nut (23) and the motor shaft (6) in the same direction is restricted when the ball screw nut (23) is screwed to the motor shaft (6).
    • 在电动助力转向系统中,将驱动齿条轴的滚珠丝杠装置的滚珠丝杠螺母(23)与电动机轴(6)的螺纹部(31)螺纹连接在电动机轴(6)的轴向端部(6a) 形成在滚珠丝杠螺母(23)的轴向端部(23a)的中空螺纹轴(30)与形成在电机轴(6)的内周的螺纹部(32)旋拧。 与电动机轴(6)的轴向端部(6a)的外周嵌合有直径大于滚珠丝杠螺母(23)的凸缘部件(33)。 凸缘构件33以这样的方式形成,即当凸缘构件33的旋转被限制时,滚珠丝杠螺母(23)和马达轴(6)沿相同方向的旋转受到限制,当 滚珠丝杠螺母(23)被拧到马达轴(6)上。
    • 10. 发明申请
    • SWITCHING POWER SUPPLY APPARATUS
    • 切换电源设备
    • US20120033454A1
    • 2012-02-09
    • US13272387
    • 2011-10-13
    • Tatsuya HOSOTANITakashi HARA
    • Tatsuya HOSOTANITakashi HARA
    • H02M3/335
    • H02M3/33569H02M1/34H02M2001/342Y02B70/1433Y02B70/1491
    • A resonance-type power supply is provided in which no short circuit occurs and driving is performed with a constant switching period by performing switching control using a change of magnetic flux of a magnetic component as a trigger. When the change of magnetic flux of the transformer is detected, the first switching control signal is caused to transition to the Hi level. The detection voltage signal is A/D-converted, a first on-time is determined from the level thereof, and a second on-time is calculated by subtracting the first on-time from the constant switching period. When the first switching control signal is caused to transition to the Low level based on the first on-time, the change of magnetic flux of the transformer is detected, and the second switching control signal is caused to transition to the Hi level and is caused to transition to the Low level after the second on-time has elapsed.
    • 提供了一种谐振型电源,其中不发生短路,并且通过使用磁性部件的磁通量的变化作为触发来执行切换控制,以恒定的切换周期进行驱动。 当检测到变压器的磁通量的变化时,使第一开关控制信号转变到高电平。 检测电压信号被A / D转换,从其电平确定第一导通时间,并且通过从恒定切换周期减去第一导通时间来计算第二导通时间。 当第一开关控制信号基于第一导通时间转变到低电平时,检测变压器的磁通量的变化,并且使第二开关控制信号转变到高电平并且被引起 在第二次启动时间过后,转换到低电平。