公开(公告)号：US06848534B2

公开(公告)日：2005-02-01

申请号：US10073981

申请日：2002-02-14

申请人： Ryoji Toyofuku ,  Takahiro Kawakami ,  Mitsutaka Sugino ,  Yasuhiro Tsutsui

发明人： Ryoji Toyofuku ,  Takahiro Kawakami ,  Mitsutaka Sugino ,  Yasuhiro Tsutsui

IPC分类号： B62D5/04 ,  B62D5/22 ,  F16H25/20 ,  H02K7/06 ,  H02K15/14

CPC分类号： H02K7/06 ,  B62D5/0427 ,  B62D5/043 ,  B62D5/0448 ,  F16H25/2021

摘要： An electric power steering apparatus for a vehicle includes a rack shaft having a rack of gear teeth formed at one end portion thereof and an externally threaded screw formed at a portion thereof excluding the toothed one end portion, a pinion meshing with the rack, a ball-screw mechanism having a nut threadedly engaged with the screw via balls, and an electric motor having a hollow motor shaft extending around the rack shaft and connected to the nut such that an assist torque generated by the electric motor is transmitted from the motor shaft via the nut to the rack shaft. The nut is disposed between the rack and the electric motor. This arrangement ensures that the electric motor and the electric power steering apparatus can be assembled easily and efficiently.

摘要翻译： 一种用于车辆的电动助力转向装置，包括齿条轴，齿条轴在其一个端部形成有齿轮齿条，外侧螺纹形成在除了齿形的一个端部之外的部分，与齿条啮合的小齿轮，球 具有通过滚珠与螺钉螺纹接合的螺母的电动机，以及具有围绕齿条轴延伸并连接到螺母的中空电机轴的电动机，使得由电动机产生的辅助转矩从电动机轴经由 螺母到齿条轴。 螺母设置在机架和电动机之间。 由此，可以容易且高效地组装电动马达和电动助力转向装置。

公开(公告)号：US5796198A

公开(公告)日：1998-08-18

申请号：US533201

申请日：1995-09-25

申请人： Mitsutaka Sugino ,  Tadao Kodaira ,  Tugio Onodera

发明人： Mitsutaka Sugino ,  Tadao Kodaira ,  Tugio Onodera

IPC分类号： B62D5/04 ,  H02K5/04 ,  H02K5/22 ,  H02K7/06 ,  H02K5/00 ,  H02K5/24

CPC分类号： B62D5/0403 ,  H02K5/04 ,  H02K7/06

摘要： An electric motor used in an electric type power steering apparatus and the like, wherein a magnetic field unit outer casing 14 for encasing a magnetic field unit 7 comprising magnets 5 and an armature 6, is formed integral and concentric with a motor yoke 3, and a power supply unit outer casing 15 for encasing a commutator 22 and brushes 27 of a power supply unit 8, having a protruding portion 15a protruding from an axially concentric outer peripheral face thereof arranged eccentric to the magnetic field unit outer casing 14, is formed integral with the motor yoke 3. As a result, the influence of shock from the outside is suppressed, and accommodating space for the power supply unit ensured, so that long motor life is possible.

摘要翻译： 在电动助力转向装置等中使用的电动机，其特征在于，包括磁铁5和电枢6的磁场单元7的磁场单元外壳14与电动机磁轭3形成一体且同心的， 用于封装换向器22的电源单元外壳15和电源单元8的电刷27，该电源单元8具有从与磁场单元外壳14偏心设置的轴向同心的外周面突出的突出部15a， 结果，抑制了来自外部的冲击的影响，并且确保了供电单元的容纳空间，从而可以延长电机寿命。

公开(公告)号：US5650701A

公开(公告)日：1997-07-22

申请号：US746192

申请日：1996-11-06

申请人： Yasuo Shimizu ,  Mitsutaka Sugino

发明人： Yasuo Shimizu ,  Mitsutaka Sugino

IPC分类号： B62D3/12 ,  B62D5/04

CPC分类号： B62D5/0445 ,  B62D3/123 ,  B62D5/0427

摘要： An electrically operated power steering apparatus has a housing, a pinion rotatably supported in the housing, the pinion being adapted to be connected to a steering shaft, a rack shaft axially movably disposed in the housing and held in mesh with the pinion, an electric motor disposed coaxially around the rack in the housing, and a ball-and-nut mechanism disposed on the rack shaft in the housing for transmitting a torque produced by the electric motor as an axial displacement to the rack shaft. The electric motor has a stator fixedly mounted in the housing and a rotor rotatably supported in the housing by a pair of bearings mounted on respective opposite ends of the rotor, the ball-and-nut mechanism being coupled to the rotor. A rack guide is disposed in the housing behind the pinion remotely from the ball-and-nut mechanism and held in sliding contact with the rack shaft. The rack shaft is axially slidably supported in the housing by the ball-and-nut mechanism and the rack guide.

摘要翻译： 电动动力转向装置具有壳体，可旋转地支撑在壳体中的小齿轮，小齿轮适于连接到转向轴，轴向可移动地设置在壳体中并与小齿轮啮合的齿条轴，电动机 同轴地布置在壳体中的齿条周围，并且设置在壳体中的齿条轴上的球螺母机构，用于将由电动机产生的扭矩作为轴向位移传递到齿条轴。 电动机具有固定地安装在壳体中的定子和通过安装在转子的相应相对端上的一对轴承可旋转地支撑在壳体中的转子，该滚珠螺母机构联接到转子。 齿条引导件远离球 - 螺母机构设置在小齿轮后面的小齿轮上并保持与齿条轴滑动接触。 齿条轴通过球 - 螺母机构和齿条引导件轴向可滑动地支撑在壳体中。

公开(公告)号：US5555951A

公开(公告)日：1996-09-17

申请号：US309892

申请日：1994-09-20

申请人： Mitsutaka Sugino ,  Yasuo Shimizu

发明人： Mitsutaka Sugino ,  Yasuo Shimizu

IPC分类号： B62D5/04

CPC分类号： B62D5/0427 ,  B62D5/0403

摘要： An electrically operated power steering apparatus having an electric motor for producing forces to assist in axially moving a rack shaft having rack teeth held in mesh with a pinion mounted on an end of a steering shaft with a steering wheel mounted thereon. The electric motor and the rack shaft are accommodated in a housing assembly which comprise a first housing and a second housing which are separate from and fastened to each other in an axial direction of the rack shaft. The second housing comprises a smaller-diameter portion, a medium-diameter portion, and a larger-diameter portion which are axially successively joined by tapered portions. The electric motor has a stator fixed to an inner surface of the larger-diameter portion and a rotor rotatably disposed around the rack shaft in the larger-diameter portion.

摘要翻译： 一种电动动力转向装置，其具有用于产生力的轴向移动齿条轴的电动机，所述齿条轴具有与安装在其上的方向盘安装在转向轴的端部上的小齿轮啮合的齿条齿。 电动机和齿条轴容纳在壳体组件中，壳体组件包括在齿条轴的轴向方向上彼此分离并彼此紧固的第一壳体和第二壳体。 第二壳体包括由锥形部分轴向连续接合的小直径部分，中直径部分和大直径部分。 电动机具有固定在大直径部的内表面的定子和可旋转地设置在大直径部的齿条轴周围的转子。

公开(公告)号：US5590732A

公开(公告)日：1997-01-07

申请号：US281183

申请日：1994-07-27

申请人： Mitsutaka Sugino ,  Yasuo Shimizu

发明人： Mitsutaka Sugino ,  Yasuo Shimizu

IPC分类号： B62D5/04

CPC分类号： B62D5/0448 ,  B62D5/0427

摘要： An electrically assisted power steering system for a motor vehicle includes a housing, a shaft slidably supported in the housing, a ball-and-nut mechanism operatively mounted on the shaft, and an electric motor mounted in the housing for transmitting rotary force from the electric motor through the ball-and-nut mechanism to the shaft. The ball-and-nut mechanism including a nut assembly disposed around the shaft and having one end rockably and rotatably supported in the housing by a four-point contact bearing or an automatic aligning bearing, and a plurality of balls movably held between an opposite end of the nut assembly and a screw groove defined in the shaft.

摘要翻译： 一种用于机动车辆的电辅助动力转向系统包括壳体，可滑动地支撑在壳体中的轴，可操作地安装在轴上的滚珠和螺母机构，以及安装在壳体中的电动马达，用于将电动力从电动 电机通过球螺母机构到轴。 所述滚珠螺母机构包括设置在所述轴周围的螺母组件，所述螺母组件通过四点接触轴承或自动调心轴承可摇摆地且可旋转地支撑在所述壳体中，以及可移动地保持在相对端 的螺母组件和限定在轴中的螺纹槽。

公开(公告)号：US5927429A

公开(公告)日：1999-07-27

申请号：US90692

申请日：1998-06-05

申请人： Mitsutaka Sugino ,  Hiroshi Ichimura ,  Masahiro Ogawa ,  Tsuto Sasaki ,  Tetsuya Matsumoto ,  Tsutomu Tatsuishi

发明人： Mitsutaka Sugino ,  Hiroshi Ichimura ,  Masahiro Ogawa ,  Tsuto Sasaki ,  Tetsuya Matsumoto ,  Tsutomu Tatsuishi

IPC分类号： B62D3/12 ,  B62D5/04 ,  B62D5/22 ,  B62D7/22

CPC分类号： B62D5/0448 ,  B62D3/12 ,  B62D7/226

摘要： An electric power steering apparatus for applying an auxiliary torque generated in proportion to a steering torque, to a rack shaft to thereby reduce the steering torque. The rack shaft has at one end thereof rack teeth for meshing with a pinion. A rack guide mechanism is provided at the rack shaft one end oppositely from the rack teeth, for urging the rack shaft to the pinion. At the other end of the rack shaft, a screw portion and a ball screw mechanism are provided. A bush is provided for supporting an intermediate portion of the rack shaft to thereby restrict the bending of the intermediate portion beyond a predetermined value when an external force is applied to the rack shaft ends thereby bending the rack shaft intermediate portion. As a result, the vibration of the rack shaft and hence a steering wheel can be minimized.

摘要翻译： 一种用于将与转向转矩成比例地产生的辅助转矩施加到齿条轴的电动助力转向装置，从而减小转向转矩。 齿条轴的一端具有与小齿轮啮合的齿条齿。 齿条引导机构设置在齿条轴的与齿条齿相反的一端，用于将齿条轴推向小齿轮。 在齿条轴的另一端设有螺纹部和滚珠丝杠机构。 设置有用于支撑齿条轴的中间部分的衬套，从而当外部力施加到齿条轴端部时由此将中间部分的弯曲限制在预定值以上，从而弯曲齿条轴中间部分。 结果，可以使齿条轴和因此方向盘的振动最小化。

公开(公告)号：US4742882A

公开(公告)日：1988-05-10

申请号：US24047

申请日：1987-03-10

申请人： Yasuo Shimizu ,  Toshitake Kawai ,  Mitsutaka Sugino

发明人： Yasuo Shimizu ,  Toshitake Kawai ,  Mitsutaka Sugino

IPC分类号： B62D5/04

CPC分类号： B62D5/0448 ,  B62D5/0424 ,  B62D5/0427

摘要： A motor-driven power steering device includes an electric motor for generating assistive torque which is applied through a ball screw mechanism to a steering gear mechanism to reduce manual steering forces applied by the driver to steer a motor vehicle. The motor-driven power steering device comprises a rack-and-pinion steering gear mechanism for converting the rotation of a pinion shaft to axial movement of a rack shaft, an electric motor for generating assistive torque to be applied to the rack-and-pinion steering gear mechanism, and a ball screw mechanism for converting the assistive torque from the motor to the axial movement of the rack shaft. The ball screw mechanism has a screw shaft having a helical groove defined in an outer peripheral surface thereof and extending substantially parallel to the rack shaft, the screw shaft being receptive of the assistive torque generated by the motor, a nut having a helical groove defined in an inner peripheral surface thereof and disposed around the screw shaft, the nut being nonrotatably coupled to the rack shaft, and a plurality of balls disposed in and between the helical grooves of the screw shaft and the nut.

摘要翻译： 电动动力转向装置包括用于产生通过滚珠丝杠机构施加到舵机机构的辅助扭矩的电动机，以减少由驾驶员施加的驾驶员引导机动车辆的手动转向力。 马达驱动的动力转向装置包括用于将小齿轮轴的旋转转换成齿条轴的轴向运动的齿轮齿条转向齿轮机构，用于产生施加到齿条和齿轮的辅助扭矩的电动机 舵机机构和用于将来自马达的辅助扭矩转换成齿条轴的轴向运动的滚珠丝杠机构。 滚珠丝杠机构具有螺旋轴，该螺旋轴具有限定在其外周表面中并且基本上平行于齿条轴延伸的螺旋槽，螺杆轴接受由马达产生的辅助扭矩，螺母具有限定在 其内周面并设置在螺杆轴周围，螺母不可旋转地联接到齿条轴，以及多个球，其设置在螺杆轴和螺母的螺旋槽之中并在其之间。