| 摘要 |
PROBLEM TO BE SOLVED: To provide an improper connection prevention device and a method of using the improper connection prevention device which smoothly provides the normal connection state even while preventing the occurrence of the improper connection state by fitting the improper connection prevention device to a plug.SOLUTION: A coupling member 20 abuts on an inclination part 86 in accordance with insertion of the coupling member 20 to the plug base end side from the plug top end side in the axial direction of a plug 40, an engagement-releasing elastic deformation part 62b is elastically deformed and the engagement between an engagement part 61 and an engaged part 62 is released. |
