Title:
LOOSENESS PREVENTION STRUCTURE FOR HEADED BOLT
Document Type and Number:
Japanese Patent JP2017089875
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To surely inhibit looseness resulting from vibration or the like with simple work, when a headed bolt is screwed.SOLUTION: A looseness prevention structure for a headed bolt is configured such that after a headed bolt 1 passes through a bolt hole 18 of an upper member 17, and is screwed into a lower member 20, two nails 7 are inserted toward an inlet corner part 19 of the bolt hole of the upper member through two drilled holes 5, cutting blades 9 of wedge parts at tips of the two nails are bitten into the inlet corner part of the bolt hole by screwing a small bolt 10 for pushing-in, and then the headed bolt is connected to the upper member.SELECTED DRAWING: Figure 1
Inventors:
OTA RYOZO
Application Number:
JP2015231131A
Publication Date:
May 25, 2017
Filing Date:
November 09, 2015
Export Citation:
Assignee:
OTA RYOZO
International Classes:
F16B39/02
Domestic Patent References:
| JP2006514238A | 2006-04-27 | |||
| JP2011179679A | 2011-09-15 | |||
| JP2008064299A | 2008-03-21 | |||
| JPH02116012U | 1990-09-17 | |||
| JPS63112612U | 1988-07-20 |
Foreign References:
| US2783811A | 1957-03-05 | |||
| GB1224343A | 1971-03-10 | |||
| GB1224343A | 1971-03-10 |