Title:
BOLT, NUT, AND STRAIN MEASUREMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/075823
Kind Code:
A1
Abstract:
Provided are a bolt and nut that can accurately detect axial force on a shank, and does not require complicated work or an increase in work time. The bolt (1) is provided with a shank (2), a head (3) provided to one end of the shank (2), and a detection unit (7). The head (3) has a strain section (5C, 6) that is a portion in the axial direction of the shank (2), has a lower Young's modulus or a lower thickness than the other portions of the head (3), and that warps more than the other portions as a result of an axial force on the shank (2). The detection unit (7) detects the strain at the strain section (5C, 6) in accordance with the axial force on the shank (2).
Inventors:
SAIGO FUMITAKA (JP)
TAKAHASHI SHUNSUKE (JP)
TAKAHASHI SHUNSUKE (JP)
Application Number:
PCT/JP2013/081551
Publication Date:
May 28, 2015
Filing Date:
November 22, 2013
Export Citation:
Assignee:
SANNOHASHI CORP (JP)
International Classes:
G01L5/00; F16B31/02
Foreign References:
| JPH02183134A | 1990-07-17 | |||
| JPS55112540A | 1980-08-30 | |||
| JP2010185809A | 2010-08-26 | |||
| JP2010053927A | 2010-03-11 | |||
| JP2010216804A | 2010-09-30 |
Attorney, Agent or Firm:
WILLFORT INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Wil photograph international patent firm (JP)
Patent business corporation Wil photograph international patent firm (JP)
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