公开(公告)号：EP3173644B1

公开(公告)日：2020-10-21

申请号：EP15824733.8

申请日：2015-07-14

申请人： NTN Corporation

发明人： KANAMOTO Takahiro ,  KOYAMA Mineo ,  NASU Keisuke

IPC分类号： F16C37/00 ,  F16C19/06 ,  F16C33/58 ,  F16C33/66 ,  F16C33/78 ,  F16C19/16 ,  F16C33/38 ,  F16C19/54

公开(公告)号：EP3173644A1

公开(公告)日：2017-05-31

申请号：EP15824733.8

申请日：2015-07-14

申请人： NTN Corporation

发明人： KANAMOTO Takahiro ,  KOYAMA Mineo ,  NASU Keisuke

IPC分类号： F16C37/00 ,  F16C19/06 ,  F16C33/58 ,  F16C33/66 ,  F16C33/78

摘要： An object is to provide a motor-incorporation-spindle ball bearing capable of allowing cooling air which enters inside the bearing of the motor-incorporation-spindle to be discharged smoothly out of the bearing without causing turbulent flow inside the bearing, does not cause a retainer 14 easily to be vibrated, and provides a high level of silent operation.
A seal plate 15 has a length to allow air to pass through the bearing from an entrance side toward an exit side substantially straightly without resistance. Therefore, the seal plate 15 is less likely to be exposed to unnecessary force when the air passes through the bearing; the seal plate 15 is prevented from wobble and deformation; stable sealing is ensured; the air is discharged smoothly without causing turbulent flow inside the bearing; a retainer 14 is not easily vibrated, and silent operation is maintained.

摘要翻译： 本发明的目的是提供一种电动机装入主轴球轴承，其能够使进入电动机装入主轴的轴承内部的冷却空气平稳地排出轴承而不会引起轴承内部的紊流，并且不会导致 保持架14容易振动，并提供高水平的静音操作。 密封板15具有允许空气基本上直线地从入口侧朝向出口侧穿过轴承而没有阻力的长度。 因此，当空气通过轴承时密封板15不太可能受到不必要的力; 防止密封板15摆动和变形; 确保稳定的密封; 空气顺利排出而不会在轴承内部产生湍流; 保持架14不容易振动，并保持静音操作。