发明名称 |
WORM WHEEL, AND ELECTRIC POWER STEERING DEVICE |
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. |
申请公布号 |
EP2960548(A4) |
申请公布日期 |
2016.11.16 |
申请号 |
EP20140753780 |
申请日期 |
2014.02.24 |
申请人 |
NSK LTD. |
发明人 |
KIYOTA HARUHIKO;YAMAMOTO TAKESHI;MITSUHASHI FUMIAKI |
分类号 |
F16H55/22;B62D5/04;F16H55/06 |
主分类号 |
F16H55/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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