Title:
WASHER, NUT AND MEMBER CONNECTING STRUCTURE
Document Type and Number:
Japanese Patent JP2021060064
Kind Code:
A
Abstract:
To provide a washer, a nut and a member connecting structure which can fasten even a sharp instrument, a tool, an apparatus or the like having a structure whose connecting part is easily loosened.SOLUTION: A shaft insertion hole 6 is formed at a washer center part, a whirl-stop protrusion 8 is formed at a washer inner face 7, and a washer lock part 10 is arranged at a washer outer face 9. The whirl-stop protrusion 8 is protruded in an opening direction of the shaft insertion hole 6 from the washer inner face, can be fit to a member connecting hole, or a member lock part 40 arranged outside the member connecting hole, and does not idle in the connecting hole or at the member lock part 40 after the fitment. The washer lock part 10 is a washer 1 which is locked to a nut lock part 21 of the nut inner face 22 screwed to a screw shaft 5 of a bolt 4 which penetrates the member connecting hole, and can prevent loosening. The nut lock part 21 is arranged at the nut inner face 22, and the nut lock part 21 is constituted so as to be preventive in loosening by being locked to the washer lock part 10 of the washer outer face 9 which is set at the screw shaft 5 by screwing the nut 20 to the screw shaft 5 of the bolt 4, and fastening and rotating it.SELECTED DRAWING: Figure 1
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Inventors:
NAKAJIMA KAZUO
Application Number:
JP2019183771A
Publication Date:
April 15, 2021
Filing Date:
October 04, 2019
Export Citation:
Assignee:
MARUNAKA KK
International Classes:
F16B43/00; B26B13/28; F16B5/02; F16B39/24; F16B39/282
Attorney, Agent or Firm:
Masahide Kobayashi
Masaharu Kobayashi
Masaharu Kobayashi