Title:
TONE WHEEL
Document Type and Number:
WIPO Patent Application WO2007080791
Kind Code:
A8
Abstract:
This invention provides a tone wheel which comprises a metal reinforcing ring (13) mounted by fitting integrally into a rotary side member (2, 4), and a circular multipolar magnet (14) fixed to the metal reinforcing ring (13) and, together with a magnetic sensor (9) fixed onto a stationary side member (5), constitutes a rotation detection magnetic encoder (E). The tone wheel is characterized in that the circular multipolar magnet (14) is formed of plastic magnets of a circular resin molded product as a magnetic powder-containing molded product magnetized with a number of S and N poles alternatively in the circumferential direction and is fixed to and integrated with the metal reinforcing ring (13) in its face opposite to the magnetic sensor (9) with the aid of an adhesive (15), and restraint means (16) for reinforcing the fixation and integration to prevent the coming-off of the circular multipolar magnet (14) is provided on a part of the fixed and integrated part of the circular multipolar magnet (14) and the metal reinforcing ring (13) with the adhesive (15).
Inventors:
MIZUTA HIDEO (JP)
Application Number:
PCT/JP2006/326058
Publication Date:
September 20, 2007
Filing Date:
December 27, 2006
Export Citation:
Assignee:
UCHIYAMA MFG (JP)
MIZUTA HIDEO (JP)
MIZUTA HIDEO (JP)
International Classes:
G01D5/245; F16C41/00; G01P3/487
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