公开(公告)号：US06729435B2

公开(公告)日：2004-05-04

申请号：US10318155

申请日：2002-12-13

申请人： Yasushi Yamada ,  Masahide Iwazawa ,  Kiyotaka Iwata ,  Akira Itoh

发明人： Yasushi Yamada ,  Masahide Iwazawa ,  Kiyotaka Iwata ,  Akira Itoh

IPC分类号： B62D504

CPC分类号： B62D5/0487 ,  B62D5/0466 ,  B62D5/0484

摘要： A control apparatus of an electric power steering system has first to fourth calculators and an abnormality detector. The first calculator calculates an assist current command value, which corresponds to assist force for reducing steering force of the steering wheel, based on the steering torque of the steering wheel. The second to fourth calculators calculate a compensation current command value, which corresponds to compensation force for compensating for movement of the steering wheel, based on the angular velocity of the steering wheel that has been estimated based on the terminal-to-terminal voltage of the motor. The abnormality detector detects an abnormality of the terminal voltages of the motor. When the abnormality detector detects an abnormality, the second to fourth calculators substitute zero for the steering wheel angular velocity and then calculates the compensation current command value.

摘要翻译： 电动助力转向系统的控制装置具有第一至第四计算器和异常检测器。 第一计算器基于方向盘的转向扭矩计算辅助电流指令值，该辅助电流指令值对应于用于减小方向盘的转向力的辅助力。 第二至第四计算器基于已经基于所述方向盘的端子间电压估计的方向盘的角速度来计算补偿电流指令值，该补偿电流指令值对应于用于补偿方向盘的运动的补偿力 发动机。 异常检测器检测电动机的端子电压的异常。 当异常检测器检测到异常时，第二至第四计算器将零代替方向盘角速度，然后计算补偿电流指令值。

公开(公告)号：US06795762B2

公开(公告)日：2004-09-21

申请号：US10316912

申请日：2002-12-12

申请人： Akira Itoh ,  Masahide Iwazawa ,  Kiyotaka Iwata ,  Yasushi Yamada

发明人： Akira Itoh ,  Masahide Iwazawa ,  Kiyotaka Iwata ,  Yasushi Yamada

IPC分类号： G06F1700

CPC分类号： B62D5/049 ,  B62D5/0484

摘要： A steering apparatus controller for an electric power steering apparatus, which includes an electric motor for generating assist torque for assisting steering of a steering wheel and the steering apparatus controller is designed to execute a feedback control of the applied drive voltage to the electric motor based on the detection result of the actual current that flows through the motor. A sensor detects the actual current to produce the detection result. When detecting an abnormal decrease of the drive voltage of the sensor, a voltage controller maintains the applied voltage to the electric motor at the voltage at a predetermined time before the drive voltage abnormally decreased.

摘要翻译： 一种用于电动助力转向装置的转向装置控制器，其包括用于产生用于辅助方向盘的转向的辅助转矩的电动机和所述转向装置控制器，被设计成基于对所述电动机施加的驱动电压的反馈控制 流过电机的实际电流的检测结果。 传感器检测实际电流以产生检测结果。 当检测到传感器的驱动电压的异常降低时，电压控制器在驱动电压异常降低之前的预定时间将电动机的施加电压保持在电动机上。

公开(公告)号：US06696807B2

公开(公告)日：2004-02-24

申请号：US10320650

申请日：2002-12-17

申请人： Kiyotaka Iwata ,  Masahide Iwazawa ,  Akira Itoh ,  Yasushi Yamada

发明人： Kiyotaka Iwata ,  Masahide Iwazawa ,  Akira Itoh ,  Yasushi Yamada

IPC分类号： A02P700

CPC分类号： B62D5/0484 ,  B62D5/0487

摘要： A control apparatus of an electric power steering system has calculating means, controlling means, determining means suppressing means, canceling means. Calculating means calculates an assist current value that corresponds to the assist force based on steering torque of a steering wheel. Controlling means executes assist control of the motor based on the assist current value. Determining means determines an abnormality in the circuit. Suppressing means suppresses the assist control when an abnormality in the circuit is determined. If the determination of an abnormality has continued longer than a predetermined time since the suppression of the assist control, the suppressing means opens relay means that permits electric power to be supplied to the motor. When it is determined that the circuit returns to normal with the assist control suppressed, the canceling means cancels the suppression of the assist control.

摘要翻译： 电动助力转向系统的控制装置具有计算装置，控制装置，确定装置抑制装置，取消装置。 计算装置根据方向盘的转向转矩计算与辅助力对应的辅助电流值。 控制装置基于辅助电流值执行电动机的辅助控制。 确定装置确定电路中的异常。 当确定电路中的异常时，抑制装置抑制辅助控制。 如果由于禁止辅助控制而导致异常的判断持续时间超过预定时间，则抑制装置打开允许向电动机供应电力的继电装置。 当确定在辅助控制被抑制时电路恢复正常时，取消装置取消对辅助控制的抑制。

公开(公告)号：US07016775B2

公开(公告)日：2006-03-21

申请号：US10314984

申请日：2002-12-10

申请人： Masahide Iwazawa ,  Kiyotaka Iwata ,  Akira Ito ,  Yasushi Yamada

发明人： Masahide Iwazawa ,  Kiyotaka Iwata ,  Akira Ito ,  Yasushi Yamada

IPC分类号： A01B69/00 ,  B62D11/00 ,  G01M17/00 ,  G05B21/02

CPC分类号： B60T8/885 ,  B60T2270/414 ,  B62D5/0481

摘要： A controller controls an electric motor to provide assist power corresponding to steering operation for an electric power steering apparatus. The controller comprises a detecting device, a filtering device, a judging device and a determining device. The detecting device detects present voltage of a power source for the electric motor. The filtering device filters the present voltage based on a small time-constant when the voltage of the power source increases and based on a large time-constant when the voltage of the power source decreases. The judging device judges whether the filtered voltage is lower than a predetermined threshold. And, the determining device determines being abnormality of the power source when it is judged that the filtered voltage is lower than the threshold.

公开(公告)号：US06908270B1

公开(公告)日：2005-06-21

申请号：US09614849

申请日：2000-07-12

申请人： Kiyotaka Iwata

发明人： Kiyotaka Iwata

IPC分类号： F16B35/04 ,  F16B39/282 ,  F16B25/00

CPC分类号： F16B39/282 ,  F16B35/047 ,  Y10S411/959

摘要： A self-locking bolt has a head with a bearing surface and a threaded part extending from the bearing surface and provided with an external thread of a pitch P for fastening to a first member when the head and threaded part are rotated in a fastening direction. There are n locking projections or recesses at equal angular intervals on the bearing surface, heights or depths of the locking projections or recesses from the bearing surface increasing or decrease gradually in a direction opposite the fastening direction from maximums to minimums with edges of the locking projections or recesses at junctions of the bearing surface and end walls of the locking projections or recesses at the maximums. The maximum height of the edge of the locking projections from the bearing surface of the head is nearly equal to and less than P/n. A second member that is between the bearing surface and the first member when the head and threaded part are rotated in the fastening direction bulges into the locking recesses.

摘要翻译： 自锁螺栓具有带有轴承表面的头部和从轴承表面延伸的螺纹部件，当头部和螺纹部件沿紧固方向旋转时，该螺纹部件具有螺距P的外螺纹，用于紧固到第一部件。 在轴承表面上具有相等角度间隔的n个锁定突起或凹槽，从轴承表面的锁定突起或凹部的高度或深度在紧固方向的相反方向上逐渐增加或减小，从最大到最小，锁定突起的边缘 或在锁定突起或凹部的支承表面和端壁的接合处的最大值处的凹部。 锁定突起从头部支承表面的边缘的最大高度几乎等于和小于P / n。 当头部和螺纹部分沿紧固方向旋转时，位于支承表面和第一构件之间的第二构件凸出到锁定凹槽中。

公开(公告)号：US07857567B2

公开(公告)日：2010-12-28

申请号：US10571840

申请日：2004-09-14

申请人： Kiyotaka Iwata ,  Kazuki Kitai

发明人： Kiyotaka Iwata ,  Kazuki Kitai

IPC分类号： F16B43/02

CPC分类号： B62D25/147 ,  F16B5/0233 ,  F16B2033/025

摘要： Clearance can be secured, the thrust of a bolt provided with a left-hand external screw thread is stabilized and the costs of component members are reduced in attaching a steering member to a body frame. A bolt-and-nut fastening mechanism includes a right-hand bolt 4 provided with a metal-to-metal contact locking mechanism 7 on a threaded part, a left-hand bolt 5 provided with an internal screw thread 8 with which the bolt engages, and a fixing nut 6 capable of engaging with the left-hand screw thread 9 of the left-hand bolt 5 or a member 14 provided with an internal screw thread with which the left-hand screw thread 9 of the left-hand bolt 5 engages. The locking mechanism 7 of the bolt 4 thrusts the left-hand bolt 5 forward so that the gap between the top surface 13 of the head of the left-hand bolt and an inner panel 2 is narrowed, and the head of the left-hand bolt 5 comes into contact with the inner panel 2 to define a clearance between a body frame and the bracket 3 of a steering member. The bolt 4 is screwed into the left-hand bolt 5 and the base surface 11 of the bolt comes into contact with an outer panel 1 to produce a fastening force. The fastening force is transmitted through the left-hand bolt 5 to attach the steering member. A welded nut 6 may be omitted and an internal screw thread 15 with which the left-hand bolt engages may be formed in the bracket 14 of the steering member.

摘要翻译： 可以确保间隙，设置有左侧外螺纹的螺栓的推力被稳定，并且在将转向构件附接到车身框架上时，部件的成本降低。 螺栓和螺母紧固机构包括在螺纹部分上设置有金属对金属触点锁定机构7的右侧螺栓4，设置有内螺纹8的左侧螺栓5，螺栓与螺栓接合 ，以及能够与左侧螺栓5的左侧螺纹9啮合的固定螺母6，或具有内螺纹的构件14，左螺栓5的左侧螺纹9 参与。 螺栓4的锁定机构7向前推动左侧螺栓5，使得左侧螺栓的头部的顶表面13与内部面板2之间的间隙变窄，并且左侧的头部 螺栓5与内板2接触以限定主体框架和转向构件的托架3之间的间隙。 螺栓4拧入左侧螺栓5中，并且螺栓的基面11与外板1接触以产生紧固力。 紧固力通过左侧螺栓5传递以附接转向构件。 可以省略焊接螺母6，并且可以在转向构件的托架14中形成左螺栓接合的内螺纹15。

公开(公告)号：US20070041808A1

公开(公告)日：2007-02-22

申请号：US10571840

申请日：2004-09-14

申请人： Kiyotaka Iwata ,  Kazuki Kitai

发明人： Kiyotaka Iwata ,  Kazuki Kitai

IPC分类号： F16B25/00

CPC分类号： B62D25/147 ,  F16B5/0233 ,  F16B2033/025

摘要： Clearance can be secured, the thrust of a bolt provided with a left-hand external screw thread is stabilized and the costs of component members are reduced in attaching a steering member to a body frame. A bolt-and-nut fastening mechanism includes a right-hand bolt 4 provided with a metal-to-metal contact locking mechanism 7 on a threaded part, a left-hand bolt 5 provided with an internal screw thread 8 with which the bolt engages, and a fixing nut 6 capable of engaging with the left-hand screw thread 9 of the left-hand bolt 5 or a member 14 provided with an internal screw thread with which the left-hand screw thread 9 of the left-hand bolt 5 engages. The locking mechanism 7 of the bolt 4 thrusts the left-hand bolt 5 forward so that the gap between the top surface 13 of the head of the left-hand bolt and an inner panel 2 is narrowed, and the head of the left-hand bolt 5 comes into contact with the inner panel 2 to define a clearance between a body frame and the bracket 3 of a steering member. The bolt 4 is screwed into the left-hand bolt 5 and the base surface 11 of the bolt comes into contact with an outer panel 1 to produce a fastening force. The fastening force is transmitted through the left-hand bolt 5 to attach the steering member. A welded nut 6 may be omitted and an internal screw thread 15 with which the left-hand bolt engages may be formed in the bracket 14 of the steering member.

摘要翻译： 可以确保间隙，设置有左侧外螺纹的螺栓的推力被稳定，并且在将转向构件附接到车身框架上时，部件的成本降低。 螺栓和螺母紧固机构包括在螺纹部分上设置有金属对金属触点锁定机构7的右侧螺栓4，设置有内螺纹8的左侧螺栓5，螺栓与螺栓接合 ，以及能够与左侧螺栓5的左侧螺纹9啮合的固定螺母6，或具有内螺纹的构件14，左螺栓5的左侧螺纹9 参与。 螺栓4的锁定机构7向前推动左侧螺栓5，使得左侧螺栓的头部的顶表面13与内部面板2之间的间隙变窄，并且左侧的头部 螺栓5与内板2接触以限定主体框架和转向构件的托架3之间的间隙。 螺栓4拧入左侧螺栓5中，并且螺栓的基面11与外板1接触以产生紧固力。 紧固力通过左侧螺栓5传递以附接转向构件。 可以省略焊接螺母6，并且可以在转向构件的托架14中形成左螺栓接合的内螺纹15。

公开(公告)号：US20050191152A1

公开(公告)日：2005-09-01

申请号：US11098133

申请日：2005-04-04

申请人： Kiyotaka Iwata

发明人： Kiyotaka Iwata

IPC分类号： F16B35/04 ,  F16B39/282 ,  F16B25/00

CPC分类号： F16B39/282 ,  F16B35/047 ,  Y10S411/959

摘要： A bolt and nut can be smoothly engages with a mating nut and a mating bolt, respectively, even if the threads of the mating nut and the mating bolt have metal particles or paint particles sticking thereto. The bolt has a regularly threaded part (3) capable of being regularly engaged with the mating nut, and a cylindrical guide part (4) extending from the regularly threaded part and having a diameter smaller than the minor diameter of the internal thread of the mating nut. A slot (5) is formed in the end surface of the cylindrical guide part.

摘要翻译： 即使配合螺母和配合螺栓的螺纹具有粘附到其上的金属颗粒或涂料颗粒，螺栓和螺母也可以分别与配合螺母和配合螺栓平滑地接合。 螺栓具有能够与配合螺母规则地接合的规则的螺纹部分（3）和从规则螺纹部分延伸的直径小于配合的内螺纹的小直径的圆柱形引导部分（4） 坚果。 在圆柱形引导部件的端面上形成有槽（5）。