Title:
BOLT WITH SENSOR, NUT WITH SENSOR, SCREW LOOSENING OR SCREW REMOVAL DETECTION DEVICE, AND SCREW LOOSENING OR SCREW REMOVAL MONITOR SYSTEM
Document Type and Number:
Japanese Patent JP2015219081
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To be easily installed without any necessity of additional processing by using a bolt or nut with a dedicated sensor, be stably retained, be manufactured at a low cost and accurately detect a screw loosening state or a screw removal state for a long period of time.SOLUTION: A bolt 1 with a sensor includes a flange-like part 1c integrally formed between a head part 1a and a shaft part 1b. A through-hole 4c of a screw-loosening or -removal detection device 4 is inserted around the flange-like part 1c, a body member 4g is rotationally adjusted such that an index 4e displayed on the body member 4g is made to match an index 1f representing a physical relationship of a disposed magnet, and fixes to a fixing object member by a magnet attraction member provided on the back face side. When the bolt 1 with the sensor is loosened or removed, a magnetism-sensitive switch detects it.
Inventors:
SHIMURA TAKESHI
SHIMIZU KAZUKI
KANEHIRA MITSUTAKA
SHIMIZU KAZUKI
KANEHIRA MITSUTAKA
Application Number:
JP2014101985A
Publication Date:
December 07, 2015
Filing Date:
May 16, 2014
Export Citation:
Assignee:
KYOWA ELECTRONIC INSTRUMENTS
International Classes:
G01L5/00; F16B31/02; H01H36/00
Attorney, Agent or Firm:
Shuji Sanada