Title:
STRUCTURE FOR PREVENTING LOOSENESS OF NUT FASTENED ONTO BOLT
Document Type and Number:
Japanese Patent JP2018119669
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent positively looseness of a fastening nut.SOLUTION: There is provided a cylindrical or conical circular base part 2 of which diameter is little bit smaller than a root diameter of a male thread, and in turn a shape of a fastening nut 6 is made as a bag-shape provided with a lid part 7 covering the upper end of a bolt, a circular lining having the same size as an outer diameter of the circular base part of the bolt is drawn at the upper surface of the lid part, two to six positions on this circle are equally spaced apart and a drill hole 8 is punched out from these positions through the lid part in advance. Then, after the bolt is fixed to a lower member 34 by a method such as an implanting or the like, an upper member 32 is passed through the bolt hole 33 and mounted on the lower member, after a bag-shaped fastening nut is hardly fastened against the bolt, two to six nail legs 18 fixed to a placing nail main body 17 are driven through two to six drill holes 8 of the lid part 7 of the fastening nut toward the upper part peripheral corner part 3 of the circular base part of the bolt, cutting edges 20 of the extremity end wedge corners at the extremity ends are bought into them to connect the bag-shaped fastening nut immovably with the bolt.SELECTED DRAWING: Figure 1
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Inventors:
OTA RYOZO
Application Number:
JP2017022597A
Publication Date:
August 02, 2018
Filing Date:
January 24, 2017
Export Citation:
Assignee:
OTA RYOZO
International Classes:
F16B39/02