| 摘要 |
<p>The present invention relates to a musical instrument in which projecting keys are arranged apart from each other along the longitudinal direction on the upper surface of the musical instrument. Specifically, the present invention includes a key section having the keys, a key lever, a rotating shaft, a spring, and a frame. The keys are connected on one side at the upper end of the key lever, and the rotating shaft and the spring connected thereto are provided in the central portion of the end surface of the key lever. In the frame, which is disposed below the key lever and is in communication with the upper surface of an air chamber in order to store air, a discharge portion is formed on the upper surface in a direction opposite to the position of the keys. When the keys are operated, the key lever is rotated and moved about the rotating shaft while the other side at the lower end of the key lever and the discharge portion of the frame are in contact with or separated from each other so as to open or close the discharge portion.</p> |
