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1. 发明公开

EP1813505A4 ELECTRIC POWER STEERING DEVICE 审中-公开
标题翻译：电动动力转向装置
公开(公告)号：EP1813505A4
公开(公告)日：2008-01-23
申请号：EP05805133
申请日：2005-10-21
申请人： NSK LTD
发明人： SEGAWA TORU , EDA HIROSHI
IPC分类号： B62D5/04
CPC分类号： B62D6/10
摘要： An electric power steering device, wherein male splines (21) and (23) formed at both ends of a torsion bar (5) are fixedly fitted to female splines (22) and (24) formed in an input shaft (2) and an output shaft (3). Also, the number of recesses and protrusions of the recessed and protruded stoppers (18) and (19) is equal to the number of the recesses and protrusions of the male splines (21) and (22) formed on the torsion bar (5), and the male splines (21) and (23) at both ends of the torsion bar (5) have a same phase. Thus, even if the torsion bar (5) is assembled in both shafts (2) and (3) at any phase, an angle restricted by the stoppers (18) and (19) in twisting both shafts (2) and (3) relative to a neutral position is the same in clockwise and counterclockwise directions.

2. 发明公开

EP1746011A4 ELECTRIC POWER STEERING DEVICE 审中-公开
标题翻译：电动动力转向装置
公开(公告)号：EP1746011A4
公开(公告)日：2007-11-07
申请号：EP05728831
申请日：2005-04-05
申请人： NSK LTD
发明人： SEGAWA TORU , EDA HIROSHI , CHIKARAISHI KAZUO , SOMEYA KENJI , ONIZUKA TOSHIYUKI
IPC分类号： B62D5/04
CPC分类号： B62D5/0409 , B62D5/0403
摘要： An electric power steering device, wherein a steering torque applied to a steering wheel is detected by a torque sensor and an auxiliary steering torque is generated from an electric motor correspondingly to the detected steering torque and transmitted to the output shaft of a steering mechanism through a worm gear mechanism. The gear meshing position of the worm gear mechanism substantially matches the position of the torque sensor in the axial direction of the output shaft, or the worm wheel of the worm gear mechanism is rotatably supported directly on a housing through a bearing. A steering shaft is fixedly fitted to the input shaft of a power assist part by elastic deformation.

3. 发明公开

EP1452419A4 ELECTRIC POWER STEERING DEVICE 有权
标题翻译： ELEKTRISCHE SERVOLENKVORRICHTUNG
公开(公告)号：EP1452419A4
公开(公告)日：2005-09-14
申请号：EP02783745
申请日：2002-12-03
申请人： NSK LTD
发明人： EDA HIROSHI , SEGAWA TORU
IPC分类号： B62D5/04 , F16C25/08 , F16C27/06 , F16C35/073 , F16C35/077 , F16H1/16 , F16H55/06 , F16H55/22 , F16H57/12 , F16H55/24
CPC分类号： B62D5/0409 , F16C19/06 , F16C25/08 , F16C27/066 , F16C35/073 , F16C2326/24 , F16C2361/61 , F16C2380/27 , F16H1/16 , F16H25/24 , F16H55/24 , F16H57/021 , F16H2057/0213
摘要： An electric power steering device, comprising a housing, a motor fitted to the housing and transmitting an auxiliary steering force to a rotating shaft through a motor shaft, a worm formed in or externally fitted to the rotating shaft and having a gear part formed of a metal or a resin, rolling bearings disposed in the housing at both side positions of the worm and rotatably supporting the rotating shaft, an output shaft transmitting a steering force for steering an axle and pivotally supported on the housing at a specified position, a worm wheel formed in or externally fitted to the output shaft so as to be meshed with the worm and having a gear part formed of a resin, and a pressurization mechanism for providing a pre-load in the direction of the worm wheel to the shaft end part of the rotating shaft apart from the motor, whereby the simple electric power steering device capable of eliminating the presence of backlash and capable of reducing tooth hitting noise without impairing a power transmission performance can be provided.
摘要翻译： 1。一种电动动力转向装置，其特征在于，具备：壳体;电动机，其安装于所述壳体，并且经由电动机轴将辅助转向力传递至旋转轴;蜗杆，其形成于所述旋转轴上或者外嵌于所述旋转轴，并具有齿轮部，金属或树脂制成，在蜗杆的两侧位置处设置在壳体中并且可旋转地支撑旋转轴的滚动轴承，传输转向轴的转向力并在特定位置处枢转地支撑在壳体上的输出轴，蜗轮以与蜗杆啮合的方式形成于或外嵌于输出轴，并具有由树脂形成的齿轮部;以及加压机构，用于在蜗轮方向上对蜗杆的轴端部施加预负荷所述旋转轴与所述马达分开，由此所述简单的电动助力转向装置能够消除间隙的存在并且能够减少击牙噪声而不会损害po 可以提供传输性能。

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