| 摘要 |
A plurality of keys are supported at a key support parts such that the respective keys are pivoted by a key-pressing operation of a player in a vertical direction, the keys being arranged in parallel to each other along a width direction of the keyboard device. A plurality of hammers are arranged in parallel to each other along the width direction such that the hammers correspond to the respective keys. The hammers are operatively connected to the corresponding keys to rotate about the respective hammer support parts, the hammers applying inertia to pivoting movements of the corresponding keys. A frame has an opening portion open at a front area which faces the player, and located more frontward than the hammer support parts, and the frame is constructed such that the hammer support parts are located between an upper limit position and a lower limit position of the opening portion in the vertical direction, and the hammers can be inserted into the frame through the opening portion from the front area when the hammers are mounted to the respective hammer support parts.
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