Patent ID: 7872554
Filing Date: 2011-01-18
Classification: F16C,F16J,G01P

Abstract:
1. A rotary detector comprising: a sensor assembling body that is fixed to an outer ring member, the sensor assembling body including: a first metallic ring that includes a cylindrical portion; a magnetic sensor that is molded out of an outer body comprising a resin, and is arranged at a predetermined position on an outer circumferential side of the cylindrical portion; and a window that is opened in a radial direction and is formed in a portion of the cylindrical portion of the first ring corresponding to a region in which the magnetic sensor is arranged; and a pulser ring that is fixed to an inner ring member capable of relatively, coaxially rotating with respect to the outer ring member, is to be detected by the sensor assembling body, and is opposed to the sensor assembling body in a radial direction, the pulser ring including an annular core portion comprising a cylindrical portion and an inner cylindrical portion, the inner cylindrical portion being disposed radially inward from the outer cylindrical portion and engaged with a second metallic ring disposed on the inner ring member, wherein the magnetic sensor is disposed radially outward from the window, and the resin is disposed between the magnetic sensor and the window.