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Title:
CONTACT TYPE STROKE SENSOR
Document Type and Number:
Japanese Patent JP2010210493
Kind Code:
A
Abstract:

To secure desired detection accuracy without complicating an assembly work of an applied moving body.

This sensor includes: a first case 11 having a sliding hole 11a: a second case 12 bonded to the first case 11 to constitute an oil chamber 14 filled with oil therebetween; a communicating passage 16 for communicating the oil chamber 14 formed in the first case 11 with the outside; a shaft 20 fitted into the sliding hole 11a of the first case 11 movably forward and backward in the state where a tip part is exposed to the outside, and storing a flange 21 having a larger diameter than the sliding hole 11a inside the oil chamber 14; a pressing spring 50 disposed in the oil chamber 14, for pressing the tip part of the shaft 20 to a direction always projecting from the first case 11; and a Hall element 85 for outputting an electric signal corresponding to displacement of the shaft 20 on the outside of the second case 12.


Inventors:
KAGEYAMA MASAHITO
SHOJI YUKIO
AKASHI MITSUMASA
YOKOYAMA YUKI
KOTAKE YOSUKE
Application Number:
JP2009058042A
Publication Date:
September 24, 2010
Filing Date:
March 11, 2009
Export Citation:
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Assignee:
KOMATSU MFG CO LTD
International Classes:
G01B7/00
Domestic Patent References:
JPS646733A1989-01-11
JPH0290459U1990-07-18
JPH07128006A1995-05-19
JPH07323709A1995-12-12
JPH09210016A1997-08-12
JPH10148259A1998-06-02
JPH11108605A1999-04-23
JP2001221605A2001-08-17
JP2002048506A2002-02-15
JPS5889814U1983-06-17
JP2005326302A2005-11-24
JPH02245601A1990-10-01
JPS646733A1989-01-11
JPH0290459U1990-07-18
JPH07128006A1995-05-19
JPH07323709A1995-12-12
JPH09210016A1997-08-12
JPH10148259A1998-06-02
JPH11108605A1999-04-23
JP2001221605A2001-08-17
JP2002048506A2002-02-15
JPS5810004U1983-01-22
JPS5923840U1984-02-14
JPS6152207U1986-04-08
JPS628057U1987-01-19
JPS63245835A1988-10-12
JPH0238811A1990-02-08
JPH041501A1992-01-07
JPH08136553A1996-05-31
JPH08278121A1996-10-22
JP2000121460A2000-04-28
JP2003528297A2003-09-24
JP2005233872A2005-09-02
JP2006170302A2006-06-29
JP2007192592A2007-08-02
Foreign References:
WO2009073170A22009-06-11
WO2009073170A22009-06-11
Attorney, Agent or Firm:
Hiroaki Sakai



 
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