| 摘要 |
PROBLEM TO BE SOLVED: To facilitate mounting and removal and an adjustment work of each part of a muffling device at the time of maintenance or the like. SOLUTION: A mounting member 306 is installed on a top plate 304 of an upright piano, and a slide block 303 is supported on the mounting member 306 movably between the front face side and the rear face side of the piano. A connecting rod 307 is installed on the slide block 303 through a support plate holder 302, and according as a lever member 308 is rotated with a rotary shaft 309 as the shaft, the slide block 303 is moved in the right and left directions in the figure by the connecting rod 307. According to the movement of the slide block 303 like this, a link support plate 300 installed on the slide block 303 through the support plate holder 302 pushes and rotates a link 202. Hereby, a shank stopper rail 200 connected to the link 202 enters a moving range of a hammer shank. |
