公开(公告)号：US06543569B1

公开(公告)日：2003-04-08

申请号：US09680699

申请日：2000-10-06

申请人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

发明人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

IPC分类号： B62D504

CPC分类号： F16H55/26 ,  B21K1/767 ,  B62D3/123 ,  B62D3/126 ,  B62D5/04 ,  B62D5/0421 ,  F16H55/08 ,  F16H55/285 ,  Y10T74/1906 ,  Y10T74/19953

摘要： An electric power steering apparatus comprising a rack shaft having two racks, a first rack-and-pinion mechanism for transferring a steering torque to the rack shaft, and a second rack-and-pinion mechanism for transferring an assist torque to the rack shaft. The second rack-and-pinion mechanism includes a pinion and a rack both being helical gears so that a large torque can be transmitted to the rack shaft. Teeth of the pinion and rack are arc profiled. The arc profiled teeth mesh with each other through a large contact area of concave and convex surfaces thereof and hence with a reduced contact pressure compared to involute profiled teeth. The arc profiled teeth thus have increased surface fatigue strength, bending strength and bending fatigue strength and can transmit an assist torque sufficiently to the rack shaft. Moreover, they have durability sufficient to withstand a torque load of a motor inertia.

摘要翻译： 一种电动助力转向装置，包括具有两个齿条的齿条轴，用于将转向转矩传递到齿条轴的第一齿条和小齿轮机构，以及用于将辅助转矩传递到齿条轴的第二齿条齿轮机构。 第二齿条齿轮机构包括小齿轮和齿条，两者都是斜齿轮，从而能够将大的扭矩传递到齿条轴。 小齿轮和齿条的牙齿呈弧形。 弧形牙齿通过其凹凸表面的大的接触面彼此啮合，因此与渐开线成型齿相比具有降低的接触压力。 因此，弧形牙齿具有增加的表面疲劳强度，弯曲强度和弯曲疲劳强度，并且可以将足够的辅助扭矩传递到齿条轴。 此外，它们具有足以承受电动机惯性的转矩负载的耐久性。

公开(公告)号：US06390230B1

公开(公告)日：2002-05-21

申请号：US09679915

申请日：2000-10-05

申请人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

发明人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

IPC分类号： B62D312

CPC分类号： F16H55/26 ,  B21K1/767 ,  B62D3/123 ,  B62D3/126 ,  B62D5/0421 ,  F16H55/08 ,  F16H55/285 ,  Y10T74/1967

摘要： An electric power steering apparatus having a motor for producing assist torque according to the steering torque, and a rack and pinion mechanism for transferring torque assistance to the rack shaft. The pinion and rack of the rack and pinion mechanism are both helical gears, and transfer high torque to the rack shaft. The helical gears have a curved arc tooth profile. The teeth of a curved arc tooth profile gear set mesh with contact between convex and concave surfaces. The contact area is therefore increased and contact pressure is decreased compared with involute teeth. Surface fatigue strength, bending strength, and bending fatigue strength are thus greater compared with involute teeth. The combined steering torque and assist torque is efficiently transferred to the rack shaft, and durability is sufficient to withstand torque loads from motor inertia.

摘要翻译： 一种电动助力转向装置，具有根据转向转矩产生辅助转矩的电动机和用于将转矩辅助传递给齿条轴的齿条齿轮机构。 齿条和小齿轮机构的小齿轮和齿条都是斜齿轮，并将高扭矩传递到齿条轴。 螺旋齿轮具有弯曲的弧形齿廓。 弯曲弧齿轮齿轮组的齿与凸表面和凹面之间的接触啮合。 因此，与渐开线齿相比，接触面积增大，接触压力降低。 因此，与渐开线齿相比，表面疲劳强度，弯曲强度和弯曲疲劳强度更大。 组合的转向扭矩和辅助扭矩被有效地传递到齿条轴，并且耐久性足以承受来自电动机惯性的转矩负载。

公开(公告)号：US06422095B1

公开(公告)日：2002-07-23

申请号：US09696653

申请日：2000-10-25

申请人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

发明人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

IPC分类号： G01L302

CPC分类号： G01L3/102 ,  G01L3/103 ,  G01L3/105 ,  G01L5/221

摘要： A magnetostrictive torque sensor includes a magnetostrictive film of width W provided along a circumference of a rotational shaft. The film causes magnetostriction in correspondence to a torque applied to the rotational shaft. The torque sensor also includes excitation and detection cores each having substantially U-shaped configuration. These cores are disposed in opposed relation to the film. The excitation core extends through an excitation coil while the detection core extends through a detection coil. The excitation core is disposed on the detection core at right angles. The film has a magnetic path passing therethrough. The magnetic path, the excitation coil, and the detection coil cooperate with each other to provide a magnetic circuit. The excitation coil and the detection coil provides a bridge circuit in cooperation with each other. When a torque is applied to the rotational shaft, the film causes magnetostriction in correspondence to the torque. The magnetostriction is electrically detected by the bridge circuit.

摘要翻译： 磁致伸缩扭矩传感器包括沿旋转轴的圆周设置的宽度为W的磁致伸缩膜。 该膜根据施加到旋转轴的扭矩而引起磁致伸缩。 扭矩传感器还包括各自具有大致U形构造的激励和检测芯。 这些芯与薄膜相对设置。 激励芯延伸穿过励磁线圈，同时检测芯延伸穿过检测线圈。 激励芯以直角设置在检测芯上。 该胶片具有穿过其中的磁路。 磁路，励磁线圈和检测线圈相互配合以提供磁路。 励磁线圈和检测线圈彼此配合提供桥接电路。 当转矩施加到旋转轴时，膜对应于扭矩引起磁致伸缩。 磁致伸缩由电桥电路电检测。

公开(公告)号：US5015009A

公开(公告)日：1991-05-14

申请号：US474620

申请日：1990-02-05

申请人： Yasuharu Ohyama ,  Masaki Izawa ,  Katsuji Watanabe ,  Tetsuro Hamada

发明人： Yasuharu Ohyama ,  Masaki Izawa ,  Katsuji Watanabe ,  Tetsuro Hamada

IPC分类号： B60G17/015 ,  B60G17/016 ,  B60G21/06

CPC分类号： B60G17/0162 ,  B60G2202/12 ,  B60G2202/41 ,  B60G2202/413 ,  B60G2202/414 ,  B60G2400/104 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/41 ,  B60G2400/60 ,  B60G2400/61 ,  B60G2400/63 ,  B60G2500/30 ,  B60G2600/182 ,  B60G2800/012 ,  B60G2800/24 ,  Y10S280/01

摘要： An active suspension system and an active suspension control method for a vehicle having a first wheel set and a second wheel set, comprising a power actuator interposed between the vehicle body and each of the wheels; a sensor for detecting turning maneuver of the vehicle; and a control unit for controlling operation of the actuators according to data obtained from the sensor so as to reduce a vertical load acting on the inner wheel of the second wheel set which bears a less vertical load than the first wheel set during the turning maneuver. Thereby, the shifting of the vertical load between the wheels of the first wheel set is reduced with the result that the overall cornering force of the vehicle is maximized because of the saturating property of the maximum cornering force of the tire in relation with the vertical load acting thereon.

摘要翻译： 一种用于具有第一车轮组和第二车轮组的车辆的主动悬架系统和主动悬架控制方法，包括设置在车身与每个车轮之间的动力致动器; 用于检测车辆的转向机动的传感器; 以及控制单元，用于根据从传感器获得的数据来控制致动器的操作，以便减少作用在第二轮组的内轮上的垂直载荷，该第二轮组的内轮在转弯操作期间具有比第一轮组更小的垂直载荷。 因此，第一车轮组的车轮之间的垂直负载的偏移减小，由于轮胎的最大转弯力相对于垂直载荷的饱和特性，车辆的整体转弯力最大化 作用于其上。

公开(公告)号：US06483442B2

公开(公告)日：2002-11-19

申请号：US09905072

申请日：2001-07-16

申请人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuhiro Sakai

发明人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuhiro Sakai

IPC分类号： G08G100

CPC分类号： B62D15/0275 ,  B60R1/00 ,  B60R2300/302 ,  B60R2300/305 ,  B60R2300/607 ,  B60R2300/806 ,  B60R2300/8086 ,  B60T2201/10 ,  B62D15/027

摘要： A parking aid system having a driver initially stop the subject vehicle alongside a target parking position so that a mark provided inside a door coincides with the central line of the target parking position when assisting the driver with left reverse parking. The subject vehicle is a predetermined distance away from an entrance of the target parking position, when the driver turns the operation switch ON. A display unit then displays the target parking position, the subject vehicle position, and an expected parking position. The expected parking position is set at a position that the subject vehicle reaches when reversing with the steering wheel turned fully to the left. Therefore, when the driver moves the subject vehicle forward to a position where the expected parking position coincides with the target parking position and reverses the subject vehicle from that position through 90° while turning the steering wheel fully to the left, the subject vehicle can reliably be guided to the target parking position.

摘要翻译： 具有驾驶员的停车辅助系统最初在目标停车位置旁边停止所述车辆，使得当向左驾驶员辅助驾驶员时，设在门内的标记与目标停车位置的中心线重合。 目标车辆距离目标停车位置的入口预定距离，当驾驶员将操作开关打开时。 然后，显示单元显示目标停车位置，目标车辆位置和预期停车位置。 当方向盘完全向左转动时，预期停车位置被设定在当车辆到达时的位置。 因此，当驾驶员将目标车辆向前方移动到预定停车位置与目标停车位置一致的位置时，将该车辆从该位置转过90°，同时使方向盘完全向左转动，则本车辆可靠地 被引导到目标停车位置。