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1. 发明公开

EP2960549A1 WORM WHEEL, AND ELECTRIC POWER STEERING DEVICE 有权
标题翻译：蜗轮和电动转向装置
公开(公告)号：EP2960549A1
公开(公告)日：2015-12-30
申请号：EP14754667.5
申请日：2014-02-24
申请人： NSK Ltd.
发明人： KIYOTA Haruhiko , YAMAMOTO Takeshi , MITSUHASHI Fumiaki
IPC分类号： F16H55/22 , B62D5/04 , F16H55/06
CPC分类号： B62D5/0409 , F16H55/06 , F16H55/22 , F16H57/0006 , F16H2055/065 , Y10T74/19907 , Y10T74/19921 , Y10T74/19953
摘要： A core of a worm wheel has an axial end surface formed with a first annular recess nad and another axial end surface formed with a second annular recess. A rim portion has a first inner circumferential portion fixed to the first annular recess and a second inner circumferential portion fixed to the second annular recess. An outer circumferential wall surface of the second annular recess extends from a bottom surface of the second annular recess so as to be perpendicular to the bottom surface. A depth of the second annular recess is at least 0.1 mm but not deeper than half of a gate thickness.
摘要翻译：蜗轮的芯部具有形成有第一环形凹槽槽的轴向端面和形成有第二环形凹槽的另一轴向端面。边缘部分具有固定到第一环形凹槽的第一内圆周部分和固定到第二环形凹槽的第二内圆周部分。第二环形凹槽的外圆周壁表面从第二环形凹槽的底表面延伸，从而垂直于底表面。第二环形凹槽的深度至少为0.1mm，但不超过浇口厚度的一半。

2. 发明公开

EP2921372A1 ELECTRIC POWER STEERING SYSTEM 审中-公开
标题翻译： ELEKTRISCHES SERVOLENKSYSTEM
公开(公告)号：EP2921372A1
公开(公告)日：2015-09-23
申请号：EP13855855.6
申请日：2013-07-26
申请人： NSK Ltd.
发明人： KICHIKAWA Takefumi , MURAKAMI Takeshi , YAMAMOTO Takeshi , MAEDA Atsushi , ISHI Tatsuya
IPC分类号： B62D5/04 , F16C19/06 , F16C35/067
CPC分类号： B62D5/0403 , B62D5/0409 , B62D6/10 , F16C19/26 , F16C19/54 , F16C19/56 , F16C35/042 , F16C35/06 , F16C35/067 , F16C2240/80 , F16C2326/24
摘要： In an electric power steering system according to the present invention, a housing member for bearings, which supports at least one rolling bearing, is formed of resin. It is preferable that the resin: can be used continuously in an environment of -40 to 85°C; comprises a resin composition that contains a fibrous filler at 30-55 mass%; has a linear expansion coefficient in the range of 1.2x10 -5 -5.5x10 -5 (1/°C) in both the fiber direction and the direction orthogonal thereto at temperatures in the range of 23 to 80°C; and has a water absorption rate of equal to or less than 4% when left in 23°C water for 24 hours.
摘要翻译：在根据本发明的电动助力转向系统中，用于轴承的支承至少一个滚动轴承的壳体构件由树脂形成。树脂优选可以在-40〜85℃的环境下连续使用; 包含含有30-55质量％的纤维填料的树脂组合物; 在23〜80℃的温度范围内，在纤维方向和与其正交的方向上的线膨胀系数在1.2×10 -5 -5.5×10 -5（1 /℃）的范围内; 并且当在23℃水中放置24小时时，其吸水率等于或小于4％。

3. 发明公开

EP2960548A1 WORM WHEEL, AND ELECTRIC POWER STEERING DEVICE 有权
标题翻译：蜗轮和电动转向装置
公开(公告)号：EP2960548A1
公开(公告)日：2015-12-30
申请号：EP14753780.7
申请日：2014-02-24
申请人： NSK Ltd.
发明人： KIYOTA Haruhiko , YAMAMOTO Takeshi , MITSUHASHI Fumiaki
IPC分类号： F16H55/22 , B62D5/04 , F16H55/06
CPC分类号： B62D5/0409 , F16H55/06 , F16H55/22 , F16H57/0006 , F16H2055/065 , Y10T74/19907 , Y10T74/19921 , Y10T74/19953
摘要： A core of a worm wheel has an axial end surface formed with a first annular recess, another axial end surface formed with a second annular recess, and a third annular recess formed in a radially outer region of the first annular recess. A rim portion has a first inner circumferential portion fixed to the first annular recess, a second inner circumferential portion fixed to the second annular recess, and a protrusion engaged with the third annular recess.
摘要翻译：蜗轮的芯部具有形成有第一环形凹部的轴向端面，形成有第二环形凹部的另一轴向端面以及形成在第一环形凹部的径向外部区域中的第三环形凹部。边缘部分具有固定到第一环形凹槽的第一内圆周部分，固定到第二环形凹槽的第二内圆周部分和与第三环形凹槽接合的突起。

4. 发明授权

EP2913246B1 ELECTRIC POWER-STEERING DEVICE 有权
公开(公告)号：EP2913246B1
公开(公告)日：2019-03-27
申请号：EP13851138.1
申请日：2013-10-28
申请人： NSK Ltd.
发明人： ISHII Tatsuya , YAMAMOTO Takeshi , MORIYAMA Seiichi
IPC分类号： B62D5/04

5. 发明公开

EP2960550A1 WORM WHEEL, AND ELECTRIC POWER STEERING DEVICE 无效
标题翻译： SCHNECKENRAD UND ELEKTRISCHE SERVOLENKVORRICHTUNG
公开(公告)号：EP2960550A1
公开(公告)日：2015-12-30
申请号：EP14754948.9
申请日：2014-02-24
申请人： NSK Ltd.
发明人： KIYOTA Haruhiko , YAMAMOTO Takeshi , MITSUHASHI Fumiaki
IPC分类号： F16H55/22 , B62D5/04 , F16H55/06
CPC分类号： B62D5/0409 , F16H55/06 , F16H55/22 , F16H57/0006 , F16H2055/065 , Y10T74/19907 , Y10T74/19921 , Y10T74/19953
摘要： A core of a worm wheel has an axial end surface formed with a first annular recess nad and another axial end surface formed with a second annular recess. An outer circumferential wall surface of a radially outer region of the second annular recess has a tapered surface extending from a bottom surface of the second annular recess to form an obtuse angle relative to the bottom surface, and a third annular recess formed radially outside the tapered surface. A cross-section of the third annular recess is a right-angled triangle having, as two sides, a surface parallel to the bottom surface of the second annular recess and a surface perpendicular to the bottom surface of the second annular recess. A rim portion has a first inner circumferential portion fixed to the first annular recess and a second inner circumferential portion fixed to the second annular recess.
摘要翻译：蜗轮的芯部具有形成有第一环形凹部的轴向端面和形成有第二环形凹部的另一个轴向端面。第二环形凹部的径向外部区域的外周壁表面具有从第二环形凹部的底表面延伸的锥形表面，以相对于底表面形成钝角，以及形成在锥形的径向外侧的第三环形凹部表面。第三环形凹部的横截面是直角三角形，其具有平行于第二环形凹部的底表面的表面和垂直于第二环形凹部的底表面的表面的两侧。边缘部分具有固定到第一环形凹部的第一内周部分和固定到第二环形凹部的第二内圆周部分。

6. 发明公开

EP2913246A1 ELECTRIC POWER-STEERING DEVICE 有权
标题翻译：电动助力转向装置
公开(公告)号：EP2913246A1
公开(公告)日：2015-09-02
申请号：EP13851138.1
申请日：2013-10-28
申请人： NSK Ltd.
发明人： ISHII Tatsuya , YAMAMOTO Takeshi , MORIYAMA Seiichi
IPC分类号： B62D5/04
CPC分类号： B62D5/0409 , B62D5/0403
摘要： An electric power steering apparatus has a first rolling bearing and a second rolling bearing rotatably supporting an output shaft. The first rolling bearing is provided between an inner peripheral surface of a through-hole of a gear housing and an outer peripheral surface of the output shaft. The second rolling bearing is provided between an inner peripheral surface of an intermediate plate press-fitted and fixed in an opening portion of the gear housing and the outer peripheral surface of the output shaft. An outer peripheral portion of the intermediate plate has alternately arranged large diameter portions and small diameter portions, and the large diameter portions are press-fitted in the gear housing.
摘要翻译：电动转向设备具有第一滚动轴承和可旋转地支撑输出轴的第二滚动轴承。第一滚动轴承设置在齿轮壳体的贯通孔的内周面与输出轴的外周面之间。第二滚动轴承设置在压入并固定在齿轮箱的开口部分中的中间板的内周表面和输出轴的外周表面之间。中间板的外周部分具有交替布置的大直径部分和小直径部分，并且大直径部分压配合在齿轮箱内。

7. 发明公开

EP2913245A1 ELECTRIC POWER-STEERING DEVICE 有权
标题翻译：电动助力转向装置
公开(公告)号：EP2913245A1
公开(公告)日：2015-09-02
申请号：EP13850639.9
申请日：2013-10-28
申请人： NSK Ltd.
发明人： ISHII Tatsuya , YAMAMOTO Takeshi , MORIYAMA Seiichi
IPC分类号： B62D5/04
CPC分类号： B62D5/0403 , B62D5/0409
摘要： An electric power steering apparatus has a first rolling bearing and a second rolling bearing rotatably supporting an output shaft. The first rolling bearing is provided between an inner peripheral surface of a through-hole of a gear housing and an outer peripheral surface of the output shaft. The second rolling bearing is provided between an inner peripheral surface of an intermediate plate and the outer peripheral surface of the output shaft. The intermediate plate has an outer peripheral portion supported and fixed in an opening portion of the gear housing.
摘要翻译：电动转向设备具有第一滚动轴承和可旋转地支撑输出轴的第二滚动轴承。第一滚动轴承设置在齿轮壳体的贯通孔的内周面与输出轴的外周面之间。第二滚动轴承设置在中间板的内周面与输出轴的外周面之间。中间板具有支撑并固定在齿轮箱的开口部分中的外周部分。

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