| 摘要 |
PROBLEM TO BE SOLVED: To prevent bushings from being missed, and wire covering inserted in a punched hole from being damaged by burrs caused at the time of punching, by forming a slit between a part to be punched and a wall, putting a bushing remaining at the hole edge of a hole to be punched in the slit, and fitting it on the wall side. SOLUTION: A bushing B is formed into a circle out of an electric insulation material. At its surface, a flange part Bb, a leg part Ba, and a cut Bf are formed. The cut Bf is made to straddle a part 4 to be punched and cut, and the bushing B is put into a slit S to be fitted. It is thus possible to eliminate storing the bushing B and fitting the bushing B at a working site for improved workability. It is also possible to burrs generated at a cutting position from protruding from the inner surface of the bushing B, thereby preventing wire covering from being damaged. |
