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公开(公告)号：EP1553316B1
公开(公告)日：2011-07-27
申请号：EP03736309.0
申请日：2003-06-30
申请人： NSK LTD.
CPC分类号： F04B27/0895 , F16C19/184 , F16C33/7823 , F16C33/7853 , F16C2240/40 , F16C2361/63
摘要： In the pulley support double row ball bearing of this invention, in order to improve the seal performance by the seal rings 46 at the openings on both ends and be able to maintain sufficient durability even under severe conditions, the inner sections of the seal rings 46 overlap the end surfaces 56 in the axial direction of the inner ring such that the width of the overlap in the axial direction is 30% or more than the diameter of the balls 44. Moreover, the tip edges of first and second protrusions 53, 54 that are formed on the inside surface of the seal lips 52 come in sliding contact with the end surfaces 56. Furthermore, third protrusions 55 come close to and face the corner sections 57 of the inner ring 42 to form labyrinth seals 58 in those areas.
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公开(公告)号：EP1553316A1
公开(公告)日：2005-07-13
申请号：EP03736309.0
申请日：2003-06-30
申请人： NSK LTD.,
CPC分类号： F04B27/0895 , F16C19/184 , F16C33/7823 , F16C33/7853 , F16C2240/40 , F16C2361/63
摘要： In the pulley support double row ball bearing of this invention, in order to improve the seal performance by the seal rings 46 at the openings on both ends and be able to maintain sufficient durability even under severe conditions, the inner sections of the seal rings 46 overlap the end surfaces 56 in the axial direction of the inner ring such that the width of the overlap in the axial direction is 30% or more than the diameter of the balls 44. Moreover, the tip edges of first and second protrusions 53, 54 that are formed on the inside surface of the seal lips 52 come in sliding contact with the end surfaces 56. Furthermore, third protrusions 55 come close to and face the corner sections 57 of the inner ring 42 to form labyrinth seals 58 in those areas.
摘要翻译： 在本发明的滑轮支承双列球轴承中，为了提高密封环46在两端的开口处的密封性能，即使在恶劣的条件下也能够保持足够的耐久性，密封环46的内部 在内圈的轴向上与端面56重叠，使得轴向重叠的宽度为球44的直径的30％以上。此外，第一突起53和第二突起54的前端缘 形成在密封唇52的内表面上的端部与端面56滑动接触。此外，第三突起55靠近并面向内环42的角部57，以在这些区域中形成迷宫式密封件58。
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3.发明公开DOUBLE-ROW BALL BEARING FOR SUPPORTING PULLEY 审中-公开DOPPELREIHIGES KUGELLAGER ZURABSTÜTZUNGEINER SCHEIBE
公开(公告)号：EP1533533A1
公开(公告)日：2005-05-25
申请号：EP03760924.5
申请日：2003-06-20
申请人： NSK LTD.,
CPC分类号： F16C33/58 , F04B27/0895 , F04B27/1063 , F16C13/02 , F16C19/184 , F16C33/414 , F16C33/6629 , F16C33/7853 , F16C2240/40 , F16C2361/63
摘要： In a pulley support double row ball bearing, with a construction which uses small diameter balls 44 so that the axial dimensions are minimized, a construction is realized which ensures an amount of grease filled in an inner space 47, and is able to effectively utilize this grease. In order to enhance the lubrication of the rolling contact portions, and be able to miniaturize and lighten automobile auxiliary equipment incorporating a double row ball bearing 32a, while ensuring durability of the double row ball bearing 32a, in the present invention, a chamfer 49 is provided in a portion near both ends of the inner circumferential surface of an outer ring 40, so that grease can be easily filled to inside the inner space 47, and the amount of grease filled inside the inner space 47 is ensured. Moreover, a retainer 45 is provided with an offset radially inwards of the pitch circle of the balls 44 so that the grease filled inside the inner space 47 is effectively fed to the rolling contact portions.
摘要翻译： 在滑轮支撑双列球轴承中，使用小直径球44的结构使得轴向尺寸最小化，实现了确保在内部空间47中填充的润滑剂的量的结构，并且能够有效地利用该 润滑脂。 为了提高滚动接触部的润滑性，能够在确保双列球轴承32a的耐久性的同时，能够使包括双列球轴承32a的汽车辅助设备小型化和轻量化，在本发明中，倒角49为 设置在外圈40的内周面的两端附近的部分，使得能够容易地将油脂填充到内部空间47的内部，并且确保了填充在内部空间47内的润滑脂的量。 此外，保持器45设置有球44的节圆径向向内的偏置，使得填充在内部空间47内的润滑脂被有效地供给到滚动接触部。
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