Title:
FASTENER
Document Type and Number:
Japanese Patent JP2019113176
Kind Code:
A
Abstract:
To provide a nut fall prevention device which can prevent a fall of a nut fastened to a bolt without applying special processing to the bolt, and does not cause its own come-off from the bolt due to the vibration of the bolt.SOLUTION: In a fastener, a bolt in which a bolt groove is formed by cutting a male thread to an axial direction is formed, a nut groove is formed by cutting a female thread of a nut which is screwed to the bolt in the axial direction, the female thread formed into a disc circular shape by the nut groove is inserted into the bolt groove in the axial direction, and the nut is screwed to the bolt in a prescribed position by the rotation of the nut. The nut is split into a front nut having a first female thread, and a rear nut having a second female thread, a linkage member is arranged between the front nut and the rear nut, and by the linkage member, the front nut and the rear nut are connected to each other in a position being a disc circular shape in a plane view by the disc circular first female thread and the second female thread.SELECTED DRAWING: Figure 2
Inventors:
SUZUKI YASUYUKI
ARA HITOSHI
ARA HITOSHI
Application Number:
JP2017255399A
Publication Date:
July 11, 2019
Filing Date:
December 22, 2017
Export Citation:
Assignee:
SUZUKI YASUYUKI
TECHNOCRAT KK
TECHNOCRAT KK
International Classes:
F16B37/08; F16B35/00