BLOCK PLUG FOR DETONATOR AND MANUFACTURE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a block plug which can stably set the resistance value of a bridge wire between lead pins to a desired value in a wide range without influence of applied pressure by igniting explosive powder by excluding the directionality of a lead pin insertion hole without regulating the cross angle of the wire between the end faces of the pins. SOLUTION: The block plug for a detonator comprises a bridge wire connected between the end faces of a pair of lead pins 2 of an insulation plug 1 through which the pair of lead pins 2 are passed, and pircular collars 21 formed at the ends of the pins 2, wherein the ratio L1 /Lmin of the shortest interval Imin between the collars to the interval L0 between the centers of both the collars is set to 2.5 or more, and the wire 4 is connected to the surface of the collar 21 by including the collar edge positions (e).