Title:
FASTENING STRUCTURE BY BOLT AND NUT
Document Type and Number:
Japanese Patent JP2000055028
Kind Code:
A
Abstract:
To enable releasing of fastening to be hardly carried out.
This fastening structure comprises at least one recessed engaging portion 2 formed on a thread hole 1A of a nut 1 and a wedge member 3 imbedded in the recessed engaging portion 2. A depth of the recessed engaging portion 2 is continuously shallowly formed toward a fastening direction of the nut 1. Thereby, when a rotating force of a reverse direction relative to the fastening direction is functioned to the nut 1, the wedge member 3 is bitten to the bolt 1 by a wedge effect to inhibit a loosening of the nut 1.
Inventors:
KANAYAMA KIYOSHI
Application Number:
JP22598998A
Publication Date:
February 22, 2000
Filing Date:
August 10, 1998
Export Citation:
Assignee:
JAPAN STEEL & TUBE CONSTR
International Classes:
F16B39/282; (IPC1-7): F16B39/282
Attorney, Agent or Firm:
Yasuo Ishikawa