Automatic connector for supplying utility

An automatic coupler for supplying a utility, the automatic coupler comprising:

• a first coupling member provided on any one of a utility supplying end or a utility receiving end;
• a first valve body provided in the first coupling member and provided with a first check ball elastically supported, to perform an opening and closing of a flow path by the first check ball;
• a second coupling member provided on the other one of the utility supplying end or the utility receiving end and configured to be coupled to the first coupling member;
• and
• a second valve body provided in the second coupling member and provided with a second check ball elastically supported, to perform an opening and closing of a flow path by the second check ball,
• wherein the second valve body comprises:
• a main body;
• a first floating body elastically supported to the main body;
• and
• a second floating body elastically supported to the first floating body so that a portion of the second floating body protrudes outside the first floating body, the second floating body elastically supporting the second check ball so that a portion of the second check ball protrudes outside the first floating body.