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    • 7. 发明授权
    • Electrically actuated brake booster
    • 电动制动助力器
    • US07823384B2
    • 2010-11-02
    • US12149237
    • 2008-04-29
    • Junichi IkedaYukio Ohtani
    • Junichi IkedaYukio Ohtani
    • B60T13/74F16D65/14
    • B60T13/746
    • An electrically actuated brake booster capable of obtaining a desired boost ratio for a given input pressure when an electric actuator is activated as a boost source, so as to ensure a desired operability of a brake pedal. The electrically actuated brake booster comprises: an input piston 22 to which an input thrust is applied through an input rod 9 that moves in coordination with operation of a brake pedal 8; and a booster piston 21 to which a booster thrust is applied by an electric actuator 40 that uses an electric motor 41 as a drive source, such that the input piston 22 and the booster piston 21 are disposed to be movable relative to each other but are normally maintained in a neutral position of relative displacement by means of springs 34. While an amount of relative displacement between the pistons 21 and 22 is determined by the potentiometer 45, the electric motor 41 is controlled to adjust the amount of relative displacement to a predetermined value. At the same time, a reaction force acting on the input piston 22 resulting from a hydraulic brake pressure is offset by urging forces of the springs 34 to thereby obtain a desired level of boost ratio.
    • 一种电动制动助力器,其能够在电动致动器作为升压源被激活时获得给定输入压力的期望升压比,以确保制动踏板的期望的可操作性。 电动制动助力器包括:输入活塞22,通过输入杆9施加输入推力,输入杆9与制动踏板8的操作协调地移动; 以及通过使用电动机41作为驱动源的电致动器40对增压推力施力的增压活塞21,使得输入活塞22和增压活塞21相对于彼此可移动设置, 通常通过弹簧34保持在相对位移的中立位置。虽然活塞21和22之间的相对位移量由电位器45确定,但是电动机41被控制以将相对位移量调整到预定的 值。 同时,作用在由液压制动器压力产生的输入活塞22上的反作用力被弹簧34的推动力抵消,从而获得所需的增压比。
    • 10. 发明申请
    • Circuit and method of effectively enhancing drive control of light-emitting diodes
    • 有效提高发光二极管驱动控制的电路及方法
    • US20060256050A1
    • 2006-11-16
    • US11431647
    • 2006-05-11
    • Junichi Ikeda
    • Junichi Ikeda
    • G09G3/32
    • H05B33/0827H05B33/0815
    • An LED drive circuit includes a plurality of LEDs, a power supply circuit for outputting a variable output voltage to supply electricity to the LEDs, a plurality of drive transistors for driving the respective LEDs, a bias voltage setting circuit for generating and outputting a reference gate voltage for causing the drive transistors to have drain currents having a predetermined constant value, and a minimum drain voltage for causing the drive transistors to have the predetermined constant drain currents when the reference gate voltage is input to the drive transistors, and a voltage detection circuit for sequentially comparing drain voltages of the drive transistors with the minimum drain voltage to output one of the drain voltages smaller than the minimum drain voltage, wherein the power supply circuit controls the output voltage so that the drain voltage output from the voltage detection circuit becomes greater than or equal to the minimum drain voltage.
    • LED驱动电路包括多个LED,用于输出可变输出电压以向LED供电的电源电路,用于驱动各个LED的多个驱动晶体管,用于产生和输出参考栅极的偏置电压设置电路 用于使驱动晶体管具有预定常数值的漏极电流的电压和用于当参考栅极电压被输入到驱动晶体管时使驱动晶体管具有预定的恒定漏极电流的最小漏极电压;以及电压检测电路 用于顺序地比较驱动晶体管的漏极电压与最小漏极电压以输出小于最小漏极电压的漏极电压之一,其中电源电路控制输出电压,使得从电压检测电路输出的漏极电压变得更大 大于或等于最小漏极电压。