公开(公告)号：US20050257991A1

公开(公告)日：2005-11-24

申请号：US11079527

申请日：2005-03-15

申请人： Nobuhiro Ishii ,  Hisao Ubukata

发明人： Nobuhiro Ishii ,  Hisao Ubukata

IPC分类号： B62D3/12 ,  B62D5/04

CPC分类号： B62D5/0409 ,  B62D3/123 ,  B62D3/126 ,  B62D5/0421 ,  Y10T74/19842

摘要： A ball bearing 34 serving as a support reference for a pinion shaft 2 is located directly under a worm wheel 51. Thus, even when a temperature change occurs around the electric power steering apparatus, the engagement position between the worm wheel 51 and the worm 53 shifts only slightly in the axial direction of the pinion shaft 2. Furthermore, a bearing hole 47 into which an outer race of a lower needle bearing 36 is pressed and a bearing hole 45 into which an outer race of an upper ball bearing 34 is pressed are formed in a common lower gear box 41, and can be fabricated by through processing using a boring tool from the bearing hole 45 side.

摘要翻译： 用作小齿轮轴2的支撑基准的滚珠轴承34位于蜗轮51的正下方。因此，即使在电动助力转向装置周围发生温度变化时，蜗轮51与蜗杆53之间的卡合位置 此外，还有一个轴承孔47，一个下滚动轴承36的外圈被按压到该轴承孔47中，一个轴承孔45，一个上滚珠轴承34的外圈被按压到该轴承孔45中 形成在共同的下齿轮箱41中，并且可以通过使用镗刀从轴承孔45侧进行的加工来制造。

公开(公告)号：US07357216B2

公开(公告)日：2008-04-15

申请号：US11079527

申请日：2005-03-15

申请人： Nobuhiro Ishii ,  Hisao Ubukata

发明人： Nobuhiro Ishii ,  Hisao Ubukata

IPC分类号： B62D5/04 ,  F16H1/16

CPC分类号： B62D5/0409 ,  B62D3/123 ,  B62D3/126 ,  B62D5/0421 ,  Y10T74/19842

摘要： A ball bearing 34 serving as a support reference for a pinion shaft 2 is located directly under a worm wheel 51. Thus, even when a temperature change occurs around the electric power steering apparatus, the engagement position between the worm wheel 51 and the worm 53 shifts only slightly in the axial direction of the pinion shaft 2. Furthermore, a bearing hole 47 into which an outer race of a lower needle bearing 36 is pressed and a bearing hole 45 into which an outer race of an upper ball bearing 34 is pressed are formed in a common lower gear box 41, and can be fabricated by through processing using a boring tool from the bearing hole 45 side.

摘要翻译： 用作小齿轮轴2的支撑基准的滚珠轴承34位于蜗轮51的正下方。因此，即使在电动助力转向装置周围发生温度变化时，蜗轮51与蜗杆53之间的卡合位置 此外，还有一个轴承孔47，一个下滚动轴承36的外圈被按压到该轴承孔47中，一个轴承孔45，一个上滚珠轴承34的外圈被按压到该轴承孔45中 形成在共同的下齿轮箱41中，并且可以通过使用镗刀从轴承孔45侧进行的加工来制造。