Title:
脱落防止具
Document Type and Number:
Japanese Patent JP7442185
Kind Code:
B2
Abstract:
To provide a falling prevention tool which can prevent loosening of a nut attached to a bolt.SOLUTION: A falling prevention tool 1 includes: a first coil spring part 2 having a first coil wire 2A which is wound around in a substantially circular shape; a second coil spring part 3 having a second coil wire 3A which extends from one end of the first coil wire 2A and is wound around in a substantially triangle shape; a third coil spring part 4 having a third coil wire 4A which extends from the other end of the first coil wire 2A and is wound in a substantially triangle shape; an extension part 5 having an extended coil wire 5A which extends from the second coil wire 3A beyond a position of the third coil spring part 4 in the same direction as a direction substantially orthogonal to a winding radial direction of the first coil spring part 2; and a coil spring part 6 for a nut which extends from the extended coil wire 5A and is wound in a substantially hexagonal shape in a winding range in a size such that the coil spring part 6 may contact with a side surface of the nut.SELECTED DRAWING: Figure 1
Inventors:
Mayumi Soeda
Application Number:
JP2020138163A
Publication Date:
March 04, 2024
Filing Date:
August 18, 2020
Export Citation:
Assignee:
Limited company sit
International Classes:
F16B39/20
Domestic Patent References:
| JP2020012545A | ||||
| JP10012319Y1 |
Attorney, Agent or Firm:
Shuichiro Ariyoshi
Yasuyuki Morita
Nobuyoshi Tsutsui
Satoko Endo
Yasuyuki Morita
Nobuyoshi Tsutsui
Satoko Endo