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    • 101. 发明专利
    • Sealing device for bearing
    • 密封装置用于轴承
    • JP2013072443A
    • 2013-04-22
    • JP2011209656
    • 2011-09-26
    • Nsk Ltd日本精工株式会社
    • WATABE MASAMITSU
    • F16C33/78F16C19/18F16J15/32
    • F16C33/782F16C19/186F16C33/7836F16C33/7879
    • PROBLEM TO BE SOLVED: To provide a sealing device for a bearing capable of suppressing an increase of the interference of seal by mitigating a change of the interference of seal lip in accordance with the occurrence of inclination angle and capable of reducing a torque of seal without deteriorating airtightness.SOLUTION: The sealing device for a bearing includes: a first seal body 20 which is fitted to one side bearing ring 2 and is disposed continuously along a circumferential direction so as to cover the inner part of a bearing; a first slinger 24 which is fitted to the other side bearing ring 4 and is disposed continuously along the circumferential direction so as to cover the inner part of the bearing; and an intermediate seal structure which is interposed relatively rotatably between the first seal body and the first slinger and is disposed continuously along the circumferential direction so as to cover the inner part of the bearing. The intermediate seal structure is configured by integrating: a second slinger 22s with which seal lips 28a to 28c molded to the first seal body are brought into sliding contact; and a second seal body 22t to which the seal lips 32a to 32c brought into sliding contact with the first slinger are molded.
    • 解决的问题:提供一种用于轴承的密封装置,其能够通过根据倾斜角度的发生减轻密封唇的干涉的变化来抑制密封干扰的增加,并且能够减小扭矩 的密封,而不会恶化气密性。 解决方案:用于轴承的密封装置包括:第一密封体20,其安装在一个侧面轴承环2上,并且沿圆周方向连续设置以覆盖轴承的内部; 第一抛油环24,其安装在另一侧轴承环4上,并且沿圆周方向连续设置以覆盖轴承的内部; 以及中间密封结构,其相对旋转地插入在所述第一密封体和所述第一抛油环之间,并且沿着所述圆周方向连续地设置以覆盖所述轴承的内部。 中间密封结构通过一体化构成:第二抛油环22s,模制到第一密封体上的密封唇28a至28c与该第二抛油环22s滑动接触; 和与第一抛油环滑动接触的密封唇32a〜32c的第二密封体22t。 版权所有(C)2013,JPO&INPIT