| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve playability by making it possible to assure a sufficient space for placing hands atop a shell body with a simple structure and to improve appearance without making string detaining members visually recognizable. SOLUTION: The top surface side of the shell body 2 is provided with string slots 13. The string detaining members 14 are disposed at the inner walls of the string slots 13 and each one-side end of the strings 3 to be inserted into the string slots 13 by the string detaining members 14 are detained.</p> |
