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公开(公告)号：US06603110B2
公开(公告)日：2003-08-05
申请号：US10180996
申请日：2002-06-27
申请人： Akihiro Hayami , Tadaaki Fujii , Tomonao Kikuchi , Tadashi Hatano , Yasuhiro Yamada , Takayuki Nakao , Tomoaki Shimotsu , Toshiaki Murai , Tohru Oyama , Hidehiro Ikeuchi , Masayuki Miyoshi
发明人： Akihiro Hayami , Tadaaki Fujii , Tomonao Kikuchi , Tadashi Hatano , Yasuhiro Yamada , Takayuki Nakao , Tomoaki Shimotsu , Toshiaki Murai , Tohru Oyama , Hidehiro Ikeuchi , Masayuki Miyoshi
IPC分类号： H01J4014
摘要： A temperature compensating circuit includes a first circuit network 1 between an inverting input terminal of an operational amplifier 13 and an output terminal of the operational amplifier 13, and a second circuit network 2 between the inverting input terminal of the operational amplifier 13 and a reference potential. At least one of the first circuit network and the second circuit network is made of an arrangement containing a plurality of series-connected thermistor/resistor pairs in which the thermistors are connected parallel to the resistors, and the temperature compensating circuit compensates a temperature-dependent signal which is inputted into a positive phase input terminal of the operational amplifier 13, and outputs the temperature-compensated signal.
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2.发明授权公开(公告)号：US06426495B1
公开(公告)日：2002-07-30
申请号：US09603953
申请日：2000-06-26
申请人： Akihiro Hayami , Tadaaki Fujii , Tomonao Kikuchi , Tadashi Hatano , Yasuhiro Yamada , Takayuki Nakao , Tomoaki Shimotsu , Toshiaki Murai , Tohru Oyama , Hidehiro Ikeuchi , Masayuki Miyoshi
发明人： Akihiro Hayami , Tadaaki Fujii , Tomonao Kikuchi , Tadashi Hatano , Yasuhiro Yamada , Takayuki Nakao , Tomoaki Shimotsu , Toshiaki Murai , Tohru Oyama , Hidehiro Ikeuchi , Masayuki Miyoshi
IPC分类号： H01J4014
摘要： A temperature compensating circuit includes a first circuit network 1 between an inverting input terminal of an operational amplifier 13 and an output terminal of the operational amplifier 13, and a second circuit network 2 between the inverting input terminal of the operational amplifier 13 and a reference potential. At least one of the first circuit network and the second circuit network is made of an arrangement containing a plurality of series-connected thermistor/resistor pairs in which the thermistors are connected parallel to the resistors, and the temperature compensating circuit compensates a temperature-dependent signal which is inputted into a positive phase input terminal of the operational amplifier 13, and outputs the temperature-compensated signal.
摘要翻译： 温度补偿电路包括在运算放大器13的反相输入端和运算放大器13的输出端之间的第一电路网络1和运算放大器13的反相输入端之间的第二电路网络2和参考电位 。 第一电路网络和第二电路网络中的至少一个由包含多个串联连接的热敏电阻/电阻器对的装置制成，其中热敏电阻并联连接到电阻器，并且温度补偿电路补偿温度依赖性 信号，输入到运算放大器13的正相输入端子，并输出温度补偿信号。
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3.发明授权
公开(公告)号：US5518380A
公开(公告)日：1996-05-21
申请号：US380575
申请日：1995-01-30
申请人： Tadaaki Fujii , Hiroto Iwata , Yuuichi Kimura
发明人： Tadaaki Fujii , Hiroto Iwata , Yuuichi Kimura
CPC分类号： F04C14/226
摘要： A cam ring for forming a pump chamber on the outer periphery of a rotor which is rotatable in a body is arranged movably, and is urged in a direction in which the volume of the pump chamber is made maximum. Sealing means are interposed in an annular gap space on the outer periphery of the cam ring between the cam ring and the body, thereby forming first and second fluid-pressure chambers for allowing the cam ring to undergo displacement by moving. A spool-type changeover valve is provided which is operated in accordance with the discharge flow rate of the pressure fluid from the pump chamber to control the fluid pressure supplied to the first and second fluid-pressure chambers. The fluid pressure on the downstream side of a metering orifice 29 provided in a pump discharge-side passage 28 is introduced into the second fluid-pressure chamber for imparting moving displacement in the direction in which the volume of the pump chamber is made maximum, through a passage 37 via a second valve chamber 32b. It is possible to control the swinging of the cam ring, and to prevent fluctuations in the flow rate and a decline in the flow rate on the discharge side of the pump.
摘要翻译： 用于在转子的外周上形成可在主体中旋转的泵室的凸轮环被可移动地设置，并且沿着使泵室的容积最大的方向被推动。 密封装置插入在凸轮环和主体之间的凸轮环的外周上的环形间隙空间中，从而形成用于允许凸轮环通过移动而移位的第一和第二流体压力室。 提供了一种阀芯式转换阀，其根据来自泵室的压力流体的排出流量进行操作，以控制供应到第一和第二流体压力室的流体压力。 设置在泵排出侧通道28中的计量孔29的下游侧的流体压力被引入到第二流体压力室中，用于在泵室的容积最大化的方向上通过移动位移，通过 通过第二阀室32b的通道37。 可以控制凸轮环的摆动，并且防止流量的波动和泵排出侧的流量的下降。
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公开(公告)号：US5265691A
公开(公告)日：1993-11-30
申请号：US932268
申请日：1992-08-19
申请人： Hideo Konishi , Tadaaki Fujii
发明人： Hideo Konishi , Tadaaki Fujii
CPC分类号： B62D5/0409 , B62D3/123 , F16H55/283 , F16H55/286 , Y10T74/1967
摘要： A cushioning material sheet to be interposed between a rack support and a press plug for applying an elastic force provided by a spring is formed such that at least its one end face is tapered. Slide-contact surfaces of the rack support and the press plug to be brought into contact with the two end faces of the cushioning material sheet are so formed as to move the cushioning material sheet in a direction perpendicular to a rack support direction, along which the thickness of the cushioning material sheet is decreased. A biasing member is provided to bias the cushioning material sheet in this direction of movement, thereby obtaining a proper meshed condition between a pinion and a rack.
摘要翻译： 插入在齿条支撑件和用于施加由弹簧提供的弹性力的压塞之间的缓冲材料片形成为至少其一个端面是锥形的。 齿条支撑件和压塞与滑动材料板的两个端面接触的滑动接触表面形成为沿着与支架方向垂直的方向移动缓冲材料片， 缓冲材料片的厚度减小。 提供偏置构件以沿着该移动方向偏置缓冲材料片，由此获得小齿轮和齿条之间的适当的啮合状态。
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公开(公告)号：US5165495A
公开(公告)日：1992-11-24
申请号：US665334
申请日：1991-03-06
申请人： Tadaaki Fujii
发明人： Tadaaki Fujii
CPC分类号： B62D5/0409 , B62D5/0421 , F16H55/20 , Y10T74/19595 , Y10T74/19623 , Y10T74/19665
摘要： An improvement to an electrically driven power steering apparatus which utilizes an electric motor is disclosed. A bevel gear of a greater diameter is mounted on a steering shaft so as to be axially displaceable thereon, and an urging mechanism is connected between the bevel gear and the steering shaft. The urging mechanism renders the bevel gear to be incapable of rotation relative to the steering shaft, and also urges the teeth thereof toward the teeth of a bevel gear of a reduced diameter which is coupled to the electric motor. This prevents a backlash from occurring between the both bevel gears, thus preventing the occurrence of sounds of percussion as the both gears abut against each other.
摘要翻译： 公开了一种利用电动机的电动动力转向装置的改进。 更大直径的锥齿轮安装在转向轴上以便在其上轴向移动，并且推动机构连接在锥齿轮和转向轴之间。 推动机构使得锥齿轮相对于转向轴不能旋转，并且还将其齿朝向联接到电动机的减小直径的锥齿轮的齿推动。 这防止了在两个锥齿轮之间发生间隙，从而当两个齿轮彼此抵靠时，防止了敲击声的发生。
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公开(公告)号：US4428399A
公开(公告)日：1984-01-31
申请号：US284144
申请日：1981-07-16
申请人： Naosuke Masuda , Yoshio Tobisawa , Tadaaki Fujii
发明人： Naosuke Masuda , Yoshio Tobisawa , Tadaaki Fujii
CPC分类号： B62D5/083 , Y10T137/86646
摘要： A power steering apparatus is provided including a control valve or rotary type which controls the supply to or discharge from a power cylinder of a hydraulic fluid. A valve rotor is integrally formed with a projection within the region of a valve sleeve, which is formed with an opening therein to permit the free end of the projection to extend therethrough to the exterior thereof, with the projection being disposed in the opening to leave a given spacing therebetween, as viewed in the direction of rotation of the valve sleeve. Another projection is integrally provided on the valve sleeve, and the both projections are maintained at given positions by the resilience of a spring which is disposed in surrounding relationship with the valve sleeve. As a result, the both projections are provided at axially close locations and in a region where an input and an output shaft abut against each other. This arrangement is preferred in consideration of the mechanical strength. Since the spring is disposed in surrounding relationship with the valve sleeve, the involved construction may be made compact while assuring a resilience of a sufficient magnitude. The C-shaped spring is configured in a manner such that stresses produced therein remain to be uniform throughout the entire body thereof. This allows the spring and hence its mounting structure to be reduced in size.
摘要翻译： 提供了一种动力转向装置，其包括控制阀或旋转式，其控制对液压流体的动力缸的供给或排出。 阀转子与阀套的区域内的突起一体地形成，该套筒在其中形成有开口，以允许突起的自由端穿过其延伸到其外部，突起设置在开口中以离开 在阀套的旋转方向观察时，其间具有给定的间隔。 另一突出部一体地设置在阀套上，并且两个突起通过弹簧的弹性保持在给定的位置，该弹簧与阀套围成关系。 结果，两个突起设置在轴向靠近的位置处，并且在输入和输出轴彼此抵靠的区域中。 考虑到机械强度，这种布置是优选的。 由于弹簧设置成与阀套的周围关系，所以可以使所涉及的结构紧凑，同时确保足够大的弹性。 C形弹簧被构造成使得其中产生的应力在其整个主体中保持均匀。 这允许弹簧因此其安装结构的尺寸减小。
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公开(公告)号：US20050257992A1
公开(公告)日：2005-11-24
申请号：US11131354
申请日：2005-05-18
申请人： Kohtaro Shiino , Fumiyuki Yamaoka , Tadaaki Fujii , Toshiro Yoda
发明人： Kohtaro Shiino , Fumiyuki Yamaoka , Tadaaki Fujii , Toshiro Yoda
IPC分类号： B62D6/00 , B62D5/04 , B62D5/22 , B62D119/00 , F16H19/04
CPC分类号： B62D5/04 , B62D5/0406 , B62D5/0421 , B62D5/046
摘要： An electric power steering system for an automotive vehicle, includes a torque sensor disposed to a steering shaft to detect a steering torque. A first pinion is disposed to the steering shaft. A rack shaft is in mesh with the first pinion and connected with the steering shaft to change a rotational motion of the steering shaft to an axial motion of the rack shaft and provided to be operated in relation to the steering shaft. A first motor is connected with the first pinion to generate a steering assist torque in accordance with the steering torque detected by the torque sensor. A second pinion is disposed to be separate from the first pinion and in mesh with the rack shaft. A second motor is connected with the second pinion to generate a steering assist torque in accordance with the steering torque.
摘要翻译： 一种用于机动车辆的电动助力转向系统，包括设置在转向轴上以检测转向转矩的转矩传感器。 第一小齿轮设置在转向轴上。 齿条轴与第一小齿轮啮合并与转向轴连接，以将转向轴的旋转运动改变为齿条轴的轴向运动，并被设置为相对于转向轴操作。 第一电动机与第一小齿轮连接，以根据由转矩传感器检测的转向转矩产生转向辅助转矩。 第二小齿轮设置成与第一小齿轮分离并与齿条轴啮合。 第二电动机与第二小齿轮连接，以根据转向转矩产生转向辅助转矩。
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公开(公告)号：US5711394A
公开(公告)日：1998-01-27
申请号：US661715
申请日：1996-06-11
申请人： Tadaaki Fujii , Toshiro Yoda
发明人： Tadaaki Fujii , Toshiro Yoda
摘要： A electric motor, which drives a fluid pressure pump used to derive a steering assist force, is controlled in a required manner using a simplified arrangement. Specifically, a pump 11 which feeds a fluid pressure in order to produce an assist force is driven by a D.C. brushless motor 11 which is provided with means 18 for detecting a rotational position of a rotor 23 thereof. Motor control means 14, 15 drives and controls the motor to rotate at a given number of revolutions. Vehicle speed detecting means 16 detects a running speed of a vehicle. The motor control means controls the number of revolutions of the brushless motor on the basis of information representing a vehicle speed, a number of revolutions of the rotor which is determined by utilizing a signal from the rotor position detecting means, and information from means which detect a steer angle and a steering angular rate.
摘要翻译： 驱动用于导出转向辅助力的流体压力泵的电动机使用简化的布置以所需的方式进行控制。 具体地说，为了产生辅助力而供给流体压力的泵11由直流无刷电动机11驱动，直流无刷电动机11设有用于检测其转子23的旋转位置的装置18。 马达控制装置14,15驱动并控制马达以给定的转数旋转。 车速检测单元16检测车辆的行驶速度。 电动机控制装置根据表示车速的信息，通过利用来自转子位置检测装置的信号确定的转子的转数和从检测到的装置的信息来控制无刷电动机的转数 转向角和转向角速度。
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公开(公告)号：US5538400A
公开(公告)日：1996-07-23
申请号：US174039
申请日：1993-12-28
申请人： Hideo Konishi , Tadaaki Fujii
发明人： Hideo Konishi , Tadaaki Fujii
CPC分类号： F04C14/226 , F04C2270/052 , F04C2270/60
摘要： A variable capacity or displacement type pump by which a pump discharge quantity is variably controlled in accordance with the revolution number, which has simple construction to contributes easier machining and assembling, and is reliable in operation. A cam ring is movably arranged to define a pump chamber around a rotatable rotor within a pump body and is biased so that the volume of the pump chamber is made maximum. Sealing members are provided in an annular space between the cam ring and the pump body so as to define first and second hydraulic pressure chambers through which the cam ring is driven to move. A switch valve is provided to control the hydraulic pressure transmitted to the first and second chambers in accordance with the quantity of the flow discharged from the pump chamber.
摘要翻译： 一种可变容量或排量型泵，通过该泵可以根据转数可变地控制泵排出量，其结构简单，有助于加工和组装更容易，并且操作可靠。 凸轮环可移动地布置成在泵体内围绕可旋转转子限定泵室，并且被偏压使得泵室的容积达到最大。 密封构件设置在凸轮环和泵体之间的环形空间中，以便限定第一和第二液压室，凸轮环通过该第一和第二液压室被驱动移动。 提供一种切换阀，以根据从泵室排出的流量来控制传递到第一和第二腔室的液压压力。
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公开(公告)号：US4645025A
公开(公告)日：1987-02-24
申请号：US835108
申请日：1986-02-28
申请人： Takeshi Ohe , Tadaaki Fujii , Ichiro Koike
发明人： Takeshi Ohe , Tadaaki Fujii , Ichiro Koike
CPC分类号： B62D6/002 , B62D7/1581
摘要： A steering apparatus for a vehicle steers both front and rear wheels and has an electric power steering unit for steering the rear wheels with a rotational force of a motor and a controller for generating a rear wheel steering signal in response to a vehicle speed and a front wheel steering angle. The controller includes a plurality of pattern memories for storing rear wheel steering angles, one of which is read out in response to a detected front wheel steering angle in accordance with ratios of rear wheel steering angles to front wheel steering angles. The ratios are predetermined or given as a function of vehicle speeds.
摘要翻译： 用于车辆的转向装置引导前轮和后轮，并且具有电动助力转向单元，用于使电动机的旋转力转向后轮，并且控制器用于响应于车辆速度和前方产生后轮转向信号 车轮转向角。 控制器包括用于存储后轮转向角的多个模式存储器，其中的一个是响应于根据后轮转向角与前轮转向角的比率而检测到的前轮转向角读出的。 这些比率是预定的或作为车辆速度的函数给出的。
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