公开(公告)号：US20160061268A1

公开(公告)日：2016-03-03

申请号：US14888352

申请日：2013-12-11

Applicant: NSK LTD.

Inventor： Kazuhiro OHIRA ,  Katsuaki DENPOU

IPC: F16C41/00 ,  F16C33/78 ,  F16C19/06

CPC classification number: F16C41/007 ,  F16C19/06 ,  F16C33/78 ,  F16C33/7856 ,  F16C33/7886 ,  F16C33/80

Abstract: A sensor (20) arranged in a deep groove ball bearing (10) includes an encoder (22) attached at an inner ring (1) to be rotatable integrally with the inner ring (1), and a magnetism detecting element (24) attached at an outer ring (2) via a sensor housing (26) to face the encoder (22) with a sensor gap. Then, the magnetism detecting element (24) is capable of measuring a rotating state of the encoder (22) rotating in the rotating state identical to that of the inner ring (1) in conjunction with a rotation of the inner ring (1). The deep groove ball bearing (10) includes a foreign material entering prevention portion that prevents a foreign material from entering the inside of the bearing from a gap between the inner ring (1) and the sensor housing (26). The size of the gap between the inner ring (1) and the sensor housing (26) is substantially identical to the sensor gap between the magnetism detecting element (24) and the encoder (22), and the gap configures non-contact seal and functions as the foreign material entering prevention portion.

Abstract translation: 布置在深沟球轴承（10）中的传感器（20）包括安装在内环（1）上以与内圈（1）一体旋转的编码器（22），以及安装有磁性检测元件（24）的编码器 在外环（2）处经由传感器外壳（26）与传感器间隙面对编码器（22）。 然后，磁性检测元件24能够与内圈（1）的旋转一起测量与内圈（1）的旋转状态相同的旋转状态旋转的编码器（22）的旋转状态。 深沟球轴承（10）包括防止异物从内圈（1）和传感器壳体（26）之间的间隙进入轴承内部的异物进入防止部。 内环（1）和传感器外壳（26）之间的间隙大小基本上与磁检测元件（24）和编码器（22）之间的传感器间隙相同，并且间隙构成非接触式密封和 作为异物进入防止部。