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1.发明授权公开(公告)号：US07814808B2
公开(公告)日：2010-10-19
申请号：US11114559
申请日：2005-04-26
IPC分类号： F16H55/18
CPC分类号： B62D5/0409 , Y10T74/19623 , Y10T74/19828
摘要： Worm gear mechanism includes a driving worm, a torque delivering worm wheel meshing with the worm, and an auxiliary worm wheel superimposed on the torque delivering worm wheel. The auxiliary worm wheel has a pitch diameter greater than that of the torque delivering worm wheel. The auxiliary worm wheel is biased against the driving worm wheel via a biasing member in the form of a leaf spring.
摘要翻译： 蜗轮机构包括驱动蜗杆，与蜗杆啮合的扭矩输送蜗轮，以及叠加在扭矩传递蜗轮上的辅助蜗轮。 辅助蜗轮的直径大于扭矩输送蜗轮的直径。 辅助蜗轮通过叶簧形式的偏置构件偏压驱动蜗轮。
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2.发明申请公开(公告)号：US20050235768A1
公开(公告)日：2005-10-27
申请号：US11114559
申请日：2005-04-26
CPC分类号： B62D5/0409 , Y10T74/19623 , Y10T74/19828
摘要： Worm gear mechanism includes a driving worm, a torque delivering worm wheel meshing with the worm, and an auxiliary worm wheel superimposed on the torque delivering worm wheel. The auxiliary worm wheel has a pitch diameter greater than that of the torque delivering worm wheel. The auxiliary worm wheel is biased against the driving worm wheel via a biasing member in the form of a leaf spring.
摘要翻译： 蜗轮机构包括驱动蜗杆，与蜗杆啮合的扭矩输送蜗轮，以及叠加在扭矩传递蜗轮上的辅助蜗轮。 辅助蜗轮的直径大于扭矩输送蜗轮的直径。 辅助蜗轮通过叶簧形式的偏置构件偏压驱动蜗轮。
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公开(公告)号：US20070205680A1
公开(公告)日：2007-09-06
申请号：US11714158
申请日：2007-03-06
申请人： Takashi Miyoshi , Yasuo Shimizu , Atsuhiko Yoneda , Katsuhiro Saito , Ryoji Toyofuku , Katsuji Watanabe
发明人： Takashi Miyoshi , Yasuo Shimizu , Atsuhiko Yoneda , Katsuhiro Saito , Ryoji Toyofuku , Katsuji Watanabe
CPC分类号： F16C35/067 , F16C2380/27 , H02K5/1732 , H02K7/081 , H02K7/1166 , H02K29/12 , Y10T74/19828
摘要： An electric motor having a rotation shaft includes a motor housing into which the electric motor is accommodated, at least one pair of rolling bearings positioned in the motor housing and rotatably supporting both ends of the rotation shaft, and a displacement restriction member provided inside the motor housing and restricting a displacement of the rolling bearing in an axial direction of the rolling bearing. Each rolling bearing includes an inner race, an outer race, and rolling elements rotatably supported between the inner race and the outer race. The inner race is press fitted without any gaps onto an outer peripheral surface of the rotation shaft, and the outer race is press fitted without any gaps into a bearing attachment portion provided inside the motor housing.
摘要翻译： 具有旋转轴的电动机包括容纳电动机的电动机壳体，位于电动机壳体中的至少一对滚动轴承和可旋转地支撑旋转轴的两端的旋转轴承，以及设置在电动机内部的位移限制部件 容纳并限制滚动轴承在滚动轴承的轴向上的位移。 每个滚动轴承包括内圈，外圈和可旋转地支撑在内圈和外圈之间的滚动元件。 内圈在旋转轴的外周面上没有任何间隙地压配合，并且外圈没有间隙地压配合到设置在电动机壳体内部的轴承安装部分中。
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公开(公告)号：US08294311B2
公开(公告)日：2012-10-23
申请号：US11714158
申请日：2007-03-06
申请人： Takashi Miyoshi , Yasuo Shimizu , Atsuhiko Yoneda , Katsuhiro Saito , Ryoji Toyofuku , Katsuji Watanabe
发明人： Takashi Miyoshi , Yasuo Shimizu , Atsuhiko Yoneda , Katsuhiro Saito , Ryoji Toyofuku , Katsuji Watanabe
CPC分类号： F16C35/067 , F16C2380/27 , H02K5/1732 , H02K7/081 , H02K7/1166 , H02K29/12 , Y10T74/19828
摘要： An electric motor having a rotation shaft includes a motor housing into which the electric motor is accommodated, at least one pair of rolling bearings positioned in the motor housing and rotatably supporting both ends of the rotation shaft, and a displacement restriction member provided inside the motor housing and restricting a displacement of the rolling bearing in an axial direction of the rolling bearing. Each rolling bearing includes an inner race, an outer race, and rolling elements rotatably supported between the inner race and the outer race. The inner race is press fitted without any gaps onto an outer peripheral surface of the rotation shaft, and the outer race is press fitted without any gaps into a bearing attachment portion provided inside the motor housing.
摘要翻译： 具有旋转轴的电动机包括容纳电动机的电动机壳体，位于电动机壳体中的至少一对滚动轴承和可旋转地支撑旋转轴的两端的旋转轴承，以及设置在电动机内部的位移限制部件 容纳并限制滚动轴承在滚动轴承的轴向上的位移。 每个滚动轴承包括内圈，外圈和可旋转地支撑在内圈和外圈之间的滚动元件。 内圈在旋转轴的外周面上没有任何间隙地压配合，并且外圈没有间隙地压配合到设置在电动机壳体内部的轴承安装部分中。
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公开(公告)号：US06976556B2
公开(公告)日：2005-12-20
申请号：US10618476
申请日：2003-07-11
申请人： Yasuo Shimizu , Katsuji Watanabe , Yasuhiro Terada
发明人： Yasuo Shimizu , Katsuji Watanabe , Yasuhiro Terada
CPC分类号： B62D5/0409 , F16H55/22
摘要： Electric power steering apparatus includes an electric motor for producing steering assist torque corresponding to steering torque applied to a steering system, and a worm gear mechanism for transmitting the steering assist torque to the steering system. The worm of the worm gear mechanism has a pressure angle greater than a pressure angle of the worm wheel, so as to reduce an actual meshing pitch circle diameter of the worm in the worm gear mechanism.
摘要翻译： 电动助力转向装置包括用于产生对应于施加到转向系统的转向转矩的转向辅助转矩的电动机和用于将转向辅助转矩传递到转向系统的蜗轮机构。 蜗轮机构的蜗杆具有大于蜗轮的压力角的压力角，从而减小蜗轮蜗杆机构中蜗杆的实际啮合节圆直径。
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公开(公告)号：US06832662B2
公开(公告)日：2004-12-21
申请号：US10695150
申请日：2003-10-27
申请人： Yasuo Shimizu , Katsuji Watanabe , Yasuhiro Terada
发明人： Yasuo Shimizu , Katsuji Watanabe , Yasuhiro Terada
IPC分类号： B62D504
CPC分类号： B62D5/0409 , F16H55/24 , F16H57/021 , F16H2057/0213 , Y10T74/19623 , Y10T74/19842
摘要： An electric power steering apparatus with an electric motor generating an assistant steering force for transmission to the steering system, a worm shaft rotated by the electric motor, a worm gear on the worm shaft that rotates therewith, a worm wheel rotated by the worm gear, a pinion shaft that rotates with the worm gear, supporting units that support both ends of the worm shaft so as to allow rotation thereof, and a distortion prevention unit that prevents distortion of the worm shaft. The supporting units may support the ends of the worm shaft without play.
摘要翻译： 一种电动助力转向装置，其具有产生用于向转向系统传递的辅助转向力的电动机，由电动机旋转的蜗杆轴，与其一起旋转的蜗杆轴上的蜗轮，由蜗轮旋转的蜗轮， 与蜗轮一起旋转的小齿轮轴，支撑蜗杆轴的两端的支撑单元，以便允许其旋转;以及防变形单元，其防止蜗杆轴的变形。 支撑单元可以在不起动的情况下支撑蜗杆的端部。
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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。
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8.发明授权Magnetostrictive torque sensor and electric power steering apparatus including the same 失效磁致伸缩转矩传感器和包括其的电动助力转向装置公开(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
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。
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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。
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公开(公告)号：US20070295552A1
公开(公告)日：2007-12-27
申请号：US11730093
申请日：2007-03-29
申请人： Katsuji Watanabe , Yasuo Shimizu , Takahiro Aoki
发明人： Katsuji Watanabe , Yasuo Shimizu , Takahiro Aoki
CPC分类号： B62D5/0409 , B62D5/0403 , F16H2057/0224
摘要： This electric power steering apparatus is provided with: a motor; a worm gear provided on a rotational shaft of the motor so as not to rotate with respect to the rotational shaft; a worm wheel gear which meshes with the worm gear and links to a steering system; a gear housing to which a motor housing of the motor is attached, and which accommodates the worm gear and the worm wheel gear; and a decentering device which makes the rotational shaft approach to or depart from a rotational axis of the worm wheel gear in a parallel manner thereto, by rotating the motor housing with respect to the gear housing.
摘要翻译： 该电动助力转向装置设有：马达; 蜗轮，设置在电动机的旋转轴上以不相对于旋转轴旋转; 蜗轮齿轮与蜗轮啮合并连接到转向系统; 齿轮壳体，电动机的电动机壳体附接到齿轮壳体，并且容纳蜗轮和蜗轮齿轮; 以及通过使马达壳体相对于齿轮壳体旋转而使旋转轴以与其平行的方式接近或离开蜗轮齿轮的旋转轴线的偏心装置。
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