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公开(公告)号:US20180374514A1
公开(公告)日:2018-12-27
申请号:US16104585
申请日:2018-08-17
申请人: Nidec Corporation
发明人: Masahiro AKAGI , Takeshi OHIRO , Tomohiro YONEDA , Akihiro YUDATE , Takayuki ISHINO , Sho NAKAMURA
CPC分类号: G11B33/1466 , G11B25/043 , G11B33/027 , G11B33/12 , G11B33/122 , G11B33/1446 , G11B33/148 , G11B33/1486
摘要: A base member includes a recessed portion extending in radial directions and recessed upward from a lower surface of the base member and a hole extending through the recessed portion in the vertical direction. The recessed portion includes a recessed portion loop-shaped surface defining a loop-shaped surface in the radial direction. A connector is located on a lower side of the recessed portion to cover the hole portion. An adhesive is located between the connector and the recessed portion. A minimum value of a gap distance in the radial direction between an outer end of the connector and an inner end of the recessed portion in which the outer end of the connector and the inner end of the recessed portion are opposed to each other with the adhesive therebetween is greater than a minimum value of a gap in the vertical direction distance between an upper surface of the connector and the recessed portion loop-shaped surface, in which the upper surface of the connector and the recessed portion loop-shaped surface are opposed to each other with the adhesive therebetween. The adhesive includes an inorganic filler.
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公开(公告)号:US20190093705A1
公开(公告)日:2019-03-28
申请号:US16118435
申请日:2018-08-31
申请人: NIDEC CORPORATION
发明人: Kunio SAKURADA , Akinobu SUMIJI , Akihiro YUDATE , Sho NAKAMURA
CPC分类号: F16C32/0633 , F04D25/06 , F04D25/062 , F04D29/056 , F04D29/063 , F04D29/083 , F04D29/102 , F16C33/745 , F16C2360/46 , H02K5/163 , H02K5/1675 , H02K7/085 , H02K7/14 , H02K21/22
摘要: A bearing apparatus includes a cylindrical sleeve, a shaft rotatably inserted in the sleeve, lubricating oil arranged in a gap defined between an inner circumferential surface of the sleeve and an outer circumferential surface of the shaft, a seal member arranged at an axially upper end portion of the sleeve projecting from the sleeve, and an annular member fixed to an outer circumferential surface of the axially upper end portion of the shaft to rotate together with the shaft. The annular member includes a projecting portion projecting axially downward. The seal member and an axially lower end portion of the projecting portion overlap each other when viewed in at least one of the axial direction or a radial direction.
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公开(公告)号:US20190013049A1
公开(公告)日:2019-01-10
申请号:US16104573
申请日:2018-08-17
申请人: Nidec Corporation
发明人: Masahiro AKAGI , Takeshi OHIRO , Tomohiro YONEDA , Akihiro YUDATE , Takayuki ISHINO , Sho NAKAMURA
CPC分类号: G11B33/1466 , G11B25/043 , G11B33/027 , G11B33/122
摘要: A base member includes a recessed portion extending in radial directions and recessed upward from a lower surface of the base member, and a hole extending through the recessed portion in the vertical direction. The recessed portion includes a recessed portion loop-shaped surface defining a loop-shaped surface in the radial direction. A connector is located on a lower side of the recessed portion to cover the hole portion. An adhesive is located between the connector and the recessed portion. A minimum value of a gap distance in the radial direction between an outer end of the connector and an inner end of the recessed portion in which the outer end of the connector and the inner end of the recessed portion are opposed to each other with the adhesive therebetween is greater than a minimum value of a gap in the vertical direction distance between an upper surface of the connector and the recessed portion loop-shaped surface, in which the upper surface of the connector and the recessed portion loop-shaped surface are opposed to each other with the adhesive therebetween. The adhesive includes a filler.
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公开(公告)号:US20180053534A1
公开(公告)日:2018-02-22
申请号:US15783128
申请日:2017-10-13
申请人: Nidec Corporation
发明人: Masahiro AKAGI , Takeshi OHIRO , Tomohiro YONEDA , Akihiro YUDATE , Takayuki ISHINO , Sho NAKAMURA
CPC分类号: G11B33/1466 , G11B25/043 , G11B33/027 , G11B33/122
摘要: A base member includes a recessed portion arranged to extend in radial directions and recessed upward from a lower surface of the base member, the radial directions being directions perpendicular to a vertical direction; and a hole portion arranged to pass through the recessed portion in the vertical direction. The recessed portion includes a recessed portion loop-shaped surface being a loop-shaped surface perpendicular to the vertical direction. A connector is arranged on a lower side of the recessed portion to cover the hole portion. An adhesive is arranged between the connector and the recessed portion. A minimum value of a gap distance between an outer end of the connector and an inner end of the recessed portion in a radial direction in which the outer end of the connector and the inner end of the recessed portion are opposed to each other with the adhesive therebetween is greater than a minimum value of a gap distance between an upper surface of the connector and the recessed portion loop-shaped surface in the vertical direction, in which the upper surface of the connector and the recessed portion loop-shaped surface are opposed to each other with the adhesive therebetween.
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公开(公告)号:US20170186467A1
公开(公告)日:2017-06-29
申请号:US15376797
申请日:2016-12-13
申请人: Nidec Corporation
发明人: Masahiro AKAGI , Takeshi OHIRO , Tomohiro YONEDA , Akihiro YUDATE , Takayuki ISHINO , Sho NAKAMURA
CPC分类号: G11B33/1466 , G11B25/043 , G11B33/027 , G11B33/122
摘要: A base member includes a recessed portion arranged to extend in radial directions and recessed upward from a lower surface of the base member, the radial directions being directions perpendicular to a vertical direction or directions parallel to these directions; and a hole portion arranged to pass through the recessed portion in the vertical direction. The recessed portion includes a recessed portion loop-shaped surface being a loop-shaped surface perpendicular to the vertical direction. A connector is arranged on a lower side of the recessed portion to cover the hole portion. An adhesive is arranged between the connector and the recessed portion. A minimum value of a gap distance between an outer end of the connector and an inner end of the recessed portion in a radial direction in which the outer end of the connector and the inner end of the recessed portion are opposed to each other with the adhesive therebetween is greater than a minimum value of a gap distance between an upper surface of the connector and the recessed portion loop-shaped surface in the vertical direction, in which the upper surface of the connector and the recessed portion loop-shaped surface are opposed to each other with the adhesive therebetween.
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