The present invention has a simple structure to form a collar that connects the dog collar and the leash in a one-touch way to lower the manufacturing cost, and by elastically supporting the connecting portion to prevent damage to the broken part by the impact of the shaking part is connected to the leash An object of the present invention is to be able to fix the rotation freely and without shaking.Means for solving this problem, the ring body 100 is open on one side； An open / close spring 110 mounted at a lower end of the open portion of the ring body 100 so as to be fixed and pivoted with elasticity, and mounted at an upper end of the annular body 100 to be in close contact with elasticity； A fixing hole 120 formed in the form of a long hole in an up-down direction from the lower side of the ring body 100, and having a wire insertion hole 121 formed therethrough through the outer side of the ring body 100； A wire 140 introduced into the fixing hole 120 through the wire insertion hole 121； A wire having a diameter larger than the diameter of the wire insertion hole 121, the center portion is inserted into the fixing hole 120 having a through hole 131, the wire inserted through the wire insertion hole 121 A fixed bead 130 which draws the inside of the through hole 131 into the upper side and withdraws the upper side and the through hole 131 is narrowed by an external pressure to fix the wire 140； A spring mounting groove 122 formed in a groove shape from an upper end of the fixing hole 120 to receive an upper side of the spring 150； The upper side is inserted into the spring mounting groove 122, the lower side is composed of a spring 150 for supporting the upper and lower elastic in contact with the upper side of the fixing bead 130.Through this configuration, the present invention has a simple structure, which can greatly reduce the price of the product according to the reduction in manufacturing cost, and it is easy to lock and loosen by one-touch method.In addi
