Trunkline delay detonator and blast-triggering device using same

A blast-triggering device comprising:

• a connector;
• and
• a trunkline delay detonator,
• wherein the trunkline delay detonator is inserted into the connector, a plurality of shock tubes that are connected to a detonator for igniting an explosive is fitted between the connector and the trunkline delay detonator, and an explosion signal is applied to the shock tubes by detonation of the trunkline delay detonator,
• the connector comprises:
• a connector body having a rectangular rod shape including front and rear surfaces and opposite side surfaces, and having therein a detonator insertion portion, which passes through the connector body in a longitudinal direction of the connector body, so that the trunkline delay detonator is inserted into the detonator insertion portion;
• a connector head configured such that a rear end thereof is integrally connected with a rear surface of the connector body, an upper surface thereof is formed in a curved surface extending from the rear end thereof to a front end thereof, a tube insertion portion of a void is provided between a lower surface thereof and the connector body so that the plurality of shock tubes connected to the detonator for igniting an explosive is fitted therein, and the front end thereof is separated from the connector body;
• a clip-fixing body, which is integrally provided with a lower end of the connector body, is formed by protruding from a circumference of the lower end of the connector body, has an opening of the detonator insertion portion in a lower surface thereof, and has a clip-fitting portion formed by passing through opposite side surfaces of the clip-fixing body;
• and
• a fixing clip fitted in the clip-fitting portion to fix the trunkline delay detonator that is inserted into the detonator insertion portion, and
• the trunkline delay detonator comprises:
• a detonator casing member having an insertion space therein in a longitudinal direction thereof, the insertion space having an open lower end;
• a base charge member inserted into an upper end side of the insertion space of the detonator casing member;
• a delay line member inserted into the insertion space in the detonator casing member and positioned under the base charge member, and in which an ignition retardant is provided;
• a plug line member inserted into the insertion space in the detonator casing member and positioned under the delay line member;
• and
• a detonation tube inserted into an inside of the plug line member so that one end of the detonation tube is positioned up to an upper end of the plug line member, and in which an explosive is inserted,
• wherein the connector body comprises:
• a main body member having a rectangular rod shape;
• and
• a head-supporting member provided at an upper end of the main body member, formed by extending outwards from a circumference of the main body member, and formed such that a rear surface thereof is integrally connected with the connector head and a front surface thereof is separated from a front end of the connector head,
• wherein the head-supporting member has a guide protrusion at the front surface thereof, and the guide protrusion is configured to be in contact with the front end of the connector head and is formed such that a gap between the guide protrusion and the connector head widens from a contact portion with the connector head toward the front end of the connector head,
• wherein the main body member is provided with a first horizontal groove and a second horizontal groove spaced apart from each other in a front surface thereof, the first horizontal groove and the second horizontal groove being open toward opposite sides of the main body member, respectively, a plurality of first horizontal grooves being spaced apart from each other in a longitudinal direction of the main body member, and a plurality of second horizontal grooves being spaced apart from each other in the longitudinal direction of the main body member, and the main body member is provided with a third horizontal groove and a fourth horizontal groove spaced apart from each other in a rear surface thereof, the third horizontal groove and the fourth horizontal groove being open toward the opposite sides of the main body member, respectively, a plurality of third horizontal grooves being spaced apart from each other in the longitudinal direction of the main body member, and a plurality of fourth horizontal grooves being spaced apart from each other in the longitudinal direction of the main body member.