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Title:
DEVICE FOR MEASURING DISTANCE BETWEEN HEADREST AND HEAD, METHOD FOR MEASURING DISTANCE BETWEEN HEADREST AND HEAD, HEADREST POSITION ADJUSTING DEVICE, AND HEADREST POSITION ADJUSTING METHOD
Document Type and Number:
WIPO Patent Application WO2010110306
Kind Code:
A1
Abstract:
A headrest position adjusting device (100) comprises a distance measuring device (10) and a drive motor unit (30). The distance measuring device (10) includes a plurality of detection electrodes (11 to 15) and a detection circuit (20). The detection circuit (20) includes a plurality of capacitance detection circuits (21 to 25) connected to the respective detection electrodes (11 to 15) in a one-to-one relationship and an arithmetic processing circuit (28). The drive motor unit (30) includes a motor drive circuit and a drive motor. The detection circuit (20) calculates, based on the detected capacitance values, the distance calculation angle (?) formed by points indicating the positions and output values of the detection electrodes (15, 11) disposed uppermost and lowermost and a point indicating the position and output value of the maximum output value, thereby measuring an electrode-head distance (L). An operation for adjusting the position of a headrest (43) is performed on the basis of the measurement result.

Inventors:
YAMAGUCHI YUICHIRO (JP)
OSAKI TAKUYA (JP)
NOGUCHI YUKI (JP)
Application Number:
PCT/JP2010/055067
Publication Date:
September 30, 2010
Filing Date:
March 24, 2010
Export Citation:
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Assignee:
FUJIKURA LTD (JP)
YAMAGUCHI YUICHIRO (JP)
OSAKI TAKUYA (JP)
NOGUCHI YUKI (JP)
International Classes:
G01B7/00; B60N2/48; G01B7/14; G01B7/28
Domestic Patent References:
WO2008133291A12008-11-06
Foreign References:
JP4018112B22007-12-05
JP2007280352A2007-10-25
JP2006226823A2006-08-31
JPH01285801A1989-11-16
JPH0418112B21992-03-26
JP2007131026A2007-05-31
JP3347069B22002-11-20
Other References:
See also references of EP 2413091A4
Attorney, Agent or Firm:
ITAMI, Masaru et al. (JP)
Itami 勝 (JP)
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