| 摘要 |
PURPOSE: A bottle cap is provided, which lowers concern of the malfunction and generates melody in opening and shutting of the bottle cap. CONSTITUTION: A bottle cap is formed into a dual structure which is comprised of an inside cap(200) opening and shutting an entrance(21) of the bottle(20); and an external cap(100) which covers the inside cap and receives it. A melody board(110) is formed in one cap of the external cap or the inside cap and is made of a metal plate(111) having different length. A plurality of musical scale protrusions(210) are perpendicularly projected from the location corresponding to the tip-end part of the metal plate in the other cap. In the rotation of the external cap, a melody according to the classified vibration is generated. |
