Title:
WASHER AND FASTENING METHOD USING THE SAME
Document Type and Number:
Japanese Patent JP2023154740
Kind Code:
A
Abstract:
To provide a washer which prevents generation of foreign objects even if co-rotation is caused when an object to be fastened (a fastened object) is fastened by a flange bolt, and to provide a fastening method using the washer.SOLUTION: In a washer 20 disposed between a flange bolt 30 and a fastened object 11, a bending part 22 which is bent inward in a curved surface form so as to wrap a flange part 32 of the flange bolt is formed at an outer periphery of a circular bottom surface part 21 including a center hole 24 through which a shaft part 33 of the flange bolt 30 penetrates. The structure allows foreign objects 14 generated between the flange bolt 30 and the washer 20 to stay in the washer 20 during fastening.SELECTED DRAWING: Figure 6
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Inventors:
WAKAHARA AKIHITO
Application Number:
JP2022064261A
Publication Date:
October 20, 2023
Filing Date:
April 08, 2022
Export Citation:
Assignee:
AOYAMA SEISAKUSHO
International Classes:
F16B5/02; F16B43/00
Attorney, Agent or Firm:
Kusunoki Patent Office