Electronic Keyboard Sound Path via Plate Cutouts
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Solution Overview
Problem
Conventional electronic keyboard instruments with loudspeakers on the lower side face challenges in securing a clear sound path to the upper side of the keyboard, leading to suboptimal sound image quality due to the placement of supporting sheet metal units obstructing the sound emitting path.
Innovation Solution
The electronic keyboard instrument incorporates a main body case with sound emitting holes on the lower side and a plate-shaped unit on the upper side, featuring cutouts that create communication paths for sound to be emitted from the loudspeaker units to the outside, ensuring uninterrupted sound transmission to the player.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a loudspeaker unit is disposed on the lower side of the main body case, then the structure can support the keyboard effectively, but the sound emitting path is obstructed by supporting sheet metal units leading to suboptimal sound image quality
Solution Approach 1:
The supporting sheet metal unit is segmented by providing cutouts that divide the solid structure into separate regions. This segmentation creates sound emission holes through which sound can pass from the loudspeaker to the keyboard area, allowing the support structure to maintain its strength while enabling sound transmission paths that improve sound image quality
Solution Approach 2:
The sheet metal unit is designed with different local properties: solid regions provide structural support for the keyboard, while cutout regions provide sound emission pathways. This local differentiation allows the same component to simultaneously fulfill both support and sound transmission functions with optimized performance for each
2Stability of the object's composition
If supporting sheet metal units are placed on the lower side to support the keyboard, then structural stability is improved, but sound transmission path is blocked resulting in poor sound image
Solution Approach 1:
The supporting sheet metal unit incorporates cutouts that segment the solid structure, creating localized sound emission holes. These segmented regions allow sound to transmit through the support structure to reach the keyboard area, maintaining structural stability while improving sound image quality
Solution Approach 2:
The cutouts in the sheet metal unit act as intermediaries that facilitate sound transmission from the loudspeaker to the keyboard area. The solid portions of the sheet metal provide structural support, while the cutout portions mediate sound passage, enabling both functions to coexist
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively secures a clear sound path from the loudspeaker to the player, enhancing sound image quality while allowing for effective support of the keyboard, thus providing a better playing experience.
Implementation Method 1
a sound emitting unit disposed on the lower side of the main body case in such a manner that a sound emitting port corresponding to the sound emitting hole is directed towards the keyboard
Implementation Method 2
a communication path is provided inside the main body case, the communication path being configured to enable a sound emitted by the sound emitting unit to be emitted from an upper side of the keyboard towards an outside by way of the cutout in the plate-shaped unit
Data Source
AI summary
An electronic keyboard instrument includes a main body case configured to include a sound emitting hole in a lower side, a keyboard provided inside the main body case, a sound emitting unit disposed on the lower side of the main body case in such a manner that a sound emitting port corresponding to the sound emitting hole is directed towards the keyboard, and a plate-shaped unit provided on an upper side of the sound emitting unit and configured to include a cutout formed in a portion corresponding to the sound emitting hole, and a communication path is provided inside the main body case, the communication path being configured to enable a sound emitted by the sound emitting unit to be emitted from an upper side of the keyboard towards an outside by way of the cutout in the plate-shaped unit.