Combined sensor and bearing assembly and method of...

Details Combined sensor and bearing assembly and method of... Combined sensor and bearing assembly and method of...

2007-12-04

2007-12-04

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S174000, C384S448000

Reexamination Certificate

active

11092587

ABSTRACT:
A combined sensor and bearing assembly (1) of the present invention includes a rolling bearing unit (22) and a rotation sensor unit (23). The rolling bearing unit (22) includes a rotatable raceway member (2), a stationary raceway member (3) mounted around the rotatable raceway member (2) with an annular bearing space defined between it and the rotatable raceway member (2), and a circular row of rolling elements (4). The combined sensor and bearing assembly (1) also includes a to-be-detected member (7) including a magnet secured to the rotatable raceway member (2), and a magnetic detector (8) including a magnetic sensor of an analog output type disposed in face-to-face relation with the to-be-detected member (7). Only a range in which a magnetic characteristic of the to-be-detected member (7) relative to the magnetic detector (8) exhibits linearity is used for detection of rotation angle of the rotatable raceway member (2).

REFERENCES:
patent: 4895462 (1990-01-01), Takata
patent: 2006/0061352 (2006-03-01), Koyagi et al.
Ichiro Tokunaga et al, Patent Abstracts of Japan, “Magnetic Angle Detection Apparatus”, Publication No. 08-122011 and Publication Date May 17, 1996.
Yoshio Fujikawa et al., Patent Abstracts of Japan, “Bearing With Absolute Encoder”, Publication No. 2004-004028, Publication Date Jan. 8, 2004.
Mamoru Aoki, Patent Abstracts of Japan, “Rolling Bearing With Rotating Condition Detecting Device”, Publication No. 2004-020548, Publication Date Jan. 22, 2004.

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