BEARING WITH ROTATION DETECTING APPARATUS

摘要

<P>PROBLEM TO BE SOLVED: To provide a bearing with a rotation detecting apparatus having high accuracy in angle detection and no limitations on a section of use due to interference with a rotating shaft etc. and capable of acquiring zero-point signals. Ž<P>SOLUTION: The bearing includes the rotation detecting apparatus 1 having both a magnetic generator 2 of which magnetic fields in opposing planes change due to rotation and a rotation angle sensor 3 arranged opposing to the magnetic generator 2 on the center axis of rotation wherein a plurality of magnetic sensor elements are planarly arranged for detecting the angle of rotation of the magnetic generator 2. A rotating-ring-side gear 27 is concentrically mounted to a bearing rotating ring 21. A fixed-ring-side gear 28 to be engage with the rotating-ring-side gear 27 is rotatably supported at the bearing rotating ring 21 via a supporting member 29. The magnetic generator 2 and the rotation angle sensor 3 of the rotation detecting apparatus 1 are each mounted to the fixed-ring-side gear 28 and the supporting member 29. A body to be detected 12 and a zero-point detection sensor 11 for detecting one rotation of the rotating ring 21 by detecting the body to be detected 12 are mounted to a rotating-ring-side gear 26 and a supporting member 19. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž