| 摘要 |
PURPOSE: A drum device using multi-layered shells is provided to improve the wave length of sound because a lug part is integrally formed in a shell. CONSTITUTION: A drum device comprises a first head part(110a), a second head part, a shell part(120), a hoop part(130), and a tension bolt part(140). The first head part contacts a stick used during a performance. The second head part is formed separate from the bottom of the first head part, includes a leather component, and contacts the stick during the performance. The shell part comprises a lug part which protrudes across the direction from the first head part to the second head part and has a lug hole in the protruding section. The hoop part connects the first and second head parts to the shell part and has a hoop hole which is located to overlap with the lug hole, not the first head part. The tension bolt part fixes the shell part and the hoop part by passing through the lug hole and the hoop hole. |
