Title:
FASTENING STRUCTURE
Document Type and Number:
Japanese Patent JP2017106603
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a fastening structure capable of releasing a fastening state without breaking a member.SOLUTION: A fastening structure 10 includes a bolt 20 having a head portion 21 and a shaft portion 22, and a nut 30 threaded to the shaft portion 22. The shaft portion 22 has a first screw portion 23, and a second screw portion 24 having a spiral direction opposite to that of the first screw portion 23. The nut 30 is composed of a first nut 31 threaded to the first screw portion 23, and a second nut 35 threaded to the second screw portion 24. The first nut 31 and the second nut 35 are provided with loosening prevention means 40 for preventing loosening of the first nut 31 and the second nut 35. The loosening prevention means 40 is composed of a recessed portion 36 disposed on the second nut 35 and an elastically deformable projecting portion 32 capable of entering the corresponding recessed portion 36, and the engagement of the recessed portion 36 and the projecting portion 32 can be released by elastic deformation of the projecting portion 32.SELECTED DRAWING: Figure 4
Inventors:
KAWAMURA MASAYUKI
Application Number:
JP2015242432A
Publication Date:
June 15, 2017
Filing Date:
December 11, 2015
Export Citation:
Assignee:
SHINMEI SANSO KK
International Classes:
F16B39/12; F16B39/16
Domestic Patent References:
| JP2004204867A | 2004-07-22 | |||
| JPH0473414A | 1992-03-09 | |||
| JP2014126159A | 2014-07-07 |
Foreign References:
| WO2001088391A1 | 2001-11-22 |
Attorney, Agent or Firm:
Akio Iida
Michiko Ema
Chiori Ueda
Toshiyuki Ando
Michiko Ema
Chiori Ueda
Toshiyuki Ando
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