Title:
CO-ROTATION PREVENTION WASHER
Document Type and Number:
Japanese Patent JP2017082829
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a co-rotation prevention washer capable of preventing co-rotation together with a bolt when the bolt is fastened.SOLUTION: This invention relates to a washer 1 present between a bolt seat surface and an object O to be fastened. A surface 3 at the object O to be fastened that is contacted with the object O to be fastened is formed with a plurality of grooves 5 or protrusions. In this invention, a practical example of the grooves 5 is shown. Each of both surfaces at a surface 4 of the bolt seat surface is formed with a plurality of grooves 5 extending in a radial direction. The grooves 5 are formed to extend from the outer peripheral edge of the washer 1 and at the same time they are formed to have a uniform groove width [a size in a peripheral direction] over its entire length.SELECTED DRAWING: Figure 2
Inventors:
IIDA MAKOTO
Application Number:
JP2015209008A
Publication Date:
May 18, 2017
Filing Date:
October 23, 2015
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F16B39/24; F16B43/00
Attorney, Agent or Firm:
Haruhisa Kinutani
Hiroyuki Hashiyama
Hiroyuki Hashiyama