Title:
TONE WHEEL
Document Type and Number:
WIPO Patent Application WO/2007/080791
Kind Code:
A1
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:
July 19, 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
Foreign References:
JP2005315782A | 2005-11-10 | |||
JP2003097583A | 2003-04-03 | |||
JP2004053410A | 2004-02-19 |
Attorney, Agent or Firm:
NAKAI, Hiroyuki (2-1 Sakaemachi 2-chom, Takarazuka-shi Hyogo 45, JP)
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