BOTTLE AND BOTTLE CAP WITH EASY OPENING AND CLOSING

摘要

The present invention relates to an easily openable sealing container. The easily openable sealing container includes: a bottle body (10) for accommodating contents therein; a bottleneck part (20) protruding from the bottle body (10), the bottleneck part (20) having a cylindrical shape and including a locking groove concavely defined on an outer circumferential surface thereof; a cap (50) for covering the bottleneck part (20); and a locking protrusion (60) protruding from an inner circumferential surface of the cap (50), wherein the locking groove includes a first locking groove (30). The first locking groove (30) includes: a first sidewall (33) inclinedly extending from an upper distal end formed on a predetermined first point (5) disposed on an upper end of the bottleneck part (20) to a lower distal end formed on a lower end of the bottleneck part (20); a second sidewall (35) inclinedly extending from an upper distal end formed on a predetermined second point (7) disposed on the upper end of the bottleneck part (20) to the lower distal end formed on the lower end of the bottleneck part (20); and a first coupling part (31) connected between the lower distal end of the first sidewall (33) and the lower distal end of the second sidewall (35), the first coupling part (31) concavely defined so that the locking protrusion (60) is inserted and fixed thereto. Here, the first sidewall (33) and the second sidewall (35) may be gradually reduced in width and depth therebetween from the upper distal end toward the lower distal end.