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Title:
ROTARY SENSOR
Document Type and Number:
WIPO Patent Application WO2010110363
Kind Code:
A1
Abstract:
A rotary sensor (1) comprises a housing member (2) fixed to a vehicle frame (B), a rotor (4) made of conductive material and fixed to a support member (S), a coil (31) retained in the housing member (2) such that the distance between the rotor (4) and the coil varies as the support member (S) rotates relative to the vehicle frame and a detection circuit capable of detecting the orientation of the support member with respect to the vehicle frame (B) based on the impedance of the coil (31). As compared with a rotary switch, the rotary sensor has no members such as a movable contact and a stationary contact in a space between the housing member (2) and the rotor (4) making it possible to omit sealing members for sealing the space and thus reducing the cost of manufacture and lengthening service life because no parts are subject to wear.

Inventors:
SATOU KOUHEI (JP)
IDA NORIHIRO (JP)
Application Number:
PCT/JP2010/055205
Publication Date:
September 30, 2010
Filing Date:
March 25, 2010
Export Citation:
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Assignee:
PANASONIC ELEC WORKS CO LTD (JP)
SATOU KOUHEI (JP)
IDA NORIHIRO (JP)
International Classes:
B62H1/02; B62J9/00; B62J99/00; G01B7/30
Foreign References:
JP2004355903A2004-12-16
JP2002357494A2002-12-13
JP2008287981A2008-11-27
JPH0631038B21994-04-27
JPH028688U1990-01-19
Attorney, Agent or Firm:
NISHIKAWA, Yoshikiyo et al. (JP)
Yoshikiyo Nishikawa (JP)
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