Keyboard lid opening and closing apparatus and keyboard instrument
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United States of America Patent
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Aug 30, 2016
Grant Date -
Jun 25, 2015
app pub date -
Dec 18, 2014
filing date -
Dec 24, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention includes a keyboard lid which is constituted by a front lid and a rear lid whose lengths in the front-rear direction of a keyboard section provided in an instrument case are different from each other being foldably connected to each other by a coupling member, and openably and closably covers the keyboard section; a rotary fulcrum section which supports the rear end portion of the rear lid such that the rear lid is rotatable with respect to the instrument case, and by which the keyboard lid is mountain-folded and the front lid is held upright above the rear portion of the keyboard section when the keyboard lid exposes the keyboard section; and a guide section which guides the front end portion of the front lid in the front-rear direction of the keyboard section. Accordingly, the keyboard lid can be stably and smoothly opened or closed.
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