Title:
NON-LOOSENING BOLT
Document Type and Number:
WIPO Patent Application WO/2020/222298
Kind Code:
A1
Abstract:
Provided is a loosening prevention method which enables a bolt to be easily and quickly tightened and achieves a strong and reliable loosening prevention effect. A locking bolt 1 includes a first bolt 11 that has a bolt head formed by cutting a shaft of one bolt into two portions at a right angle, and a second bolt 12 having a screw tip, wherein: an eccentric column part 123 having a diameter smaller than the diameter of the shaft of the second bolt 12 is eccentrically formed on a cut surface 122 of the second bolt 12 in a direction perpendicular to a central axis and protrudes outward in an axial direction; a side surface convex part 124 is formed on the outer peripheral side surface of the eccentric column part 123; and an eccentric cylindrical part 113, fitted to the eccentric column part 123, is eccentrically opened on a cut surface 112 of the first bolt 11 in a direction perpendicular to the central axis and has therein an axial groove 114 in a direction parallel to the central axis and a radial groove 115 in a radial direction.
Inventors:
TOKUMOTO TOSHIMITU (JP)
Application Number:
PCT/JP2020/016737
Publication Date:
November 05, 2020
Filing Date:
April 16, 2020
Export Citation:
Assignee:
TOKUMOTO TOSHIMITU (JP)
International Classes:
F16B39/28
Foreign References:
| JP2001311417A | 2001-11-09 | |||
| JP2000074031A | 2000-03-07 | |||
| JPH1089334A | 1998-04-07 | |||
| JP2018040495A | 2018-03-15 | |||
| JPH0340967B2 | 1991-06-20 |
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