Screw thread type heavy current binding post

The utility model relates to a screw thread type heavy current binding post, including the casing, its characterized in that: the inside of said casing is provided with line ball frame sub-assembly, and the line ball frame sub-assembly includes screw, line ball frame, square and packing ring, the line ball frame is the U-shaped form, the line ball frame includes the first side wall, first skew wall, second skew wall and second lateral wall, being provided with the cockscomb structure on the inner wall of said the first side wall and second lateral wall respectively, being provided with the elasticity groove between the adjacent sawtooth, the radian in the elasticity groove is 180 degrees, the utility model discloses lie in: the line ball frame will be put into to the wire earlier to the wire when binding post connects, cooperation square and packing ring, then the screw rotates, the cockscomb structure has increased the coefficient of friction between the wire on messenger's the first side wall and the second lateral wall, makes wire and binding post connect difficult becoming flexible firm more, has guaranteed connection stability and reliability between the two.