Title:
WASHER AND FASTENING STRUCTURE
Document Type and Number:
Japanese Patent JP2021179250
Kind Code:
A
Abstract:
To provide a washer having a non-rotation function and not damaging a mounted surface in fastening and loosening without increasing the number of components, and a fastening structure for preventing co-rotation of a bolt by applying the non-rotation function.SOLUTION: A washer 1 is used in a state of being held between a mounted surface Sa of a mounted object S and a nut 2 or a bolt head portion. A first annular projecting portion 3 is formed at a side of the mounted surface Sa. An inner shape of the first annular projecting portion 3 is larger than an outer shape of the nut 2 or the bolt head portion.SELECTED DRAWING: Figure 1
More Like This:
| WO/1982/002690 | WHEEL NUTS |
| JP2004176741 | HEIGHT ADJUSTING DEVICE |
Inventors:
SAEKI HIROSHI
Application Number:
JP2021029646A
Publication Date:
November 18, 2021
Filing Date:
February 26, 2021
Export Citation:
Assignee:
BOLT ENG CO
International Classes:
F16B43/00; F16B35/00; F16B37/00
Attorney, Agent or Firm:
Minoru Torinosu
Shinichi Nakajima
Torisu Keita
Kazuma Kanazawa
Shinichi Nakajima
Torisu Keita
Kazuma Kanazawa