Rear Panel Sound-Hole Structure for Wider Audio Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing external members for sound radiation devices, such as speaker covers, face challenges in efficiently radiating sound due to limited sound radiation directions and interference, particularly in compact electronic instruments with limited space.
Innovation Solution
The design incorporates a frame portion with multiple sound radiation holes and sloping surfaces oriented in different directions, utilizing a hexagonal prism mold to create sloping portions within the sound radiation holes, allowing for wider sound dispersion and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional speaker covers with circular sound radiation holes are used, then the structure is simple and easy to manufacture, but the sound radiation direction is limited and sound interference occurs
Solution Approach 1:
The patent applies local quality by creating sloping portions at specific locations within the sound radiation holes of the frame portion. These sloping portions are formed by providing sloping surfaces on the inner peripheral surface of the sound radiation holes, allowing sound to radiate in multiple directions from different areas of the same hole. This local modification enables directional sound control without changing the overall circular hole structure, thus maintaining ease of manufacture while improving sound radiation versatility.
2Adaptability or versatility
If multiple sound radiation holes are added to improve sound distribution, then sound radiation coverage increases, but the device complexity and interference between holes increases
Solution Approach 1:
The patent applies segmentation by dividing each sound radiation hole into multiple functional zones through the sloping portions. Each sloping portion acts as an independent sound radiation path oriented in a specific direction. This segmentation allows a single hole to perform the function of multiple holes, achieving wide sound distribution coverage while maintaining a simple structure with fewer holes, thereby reducing device complexity and interference.
Data Source
AI summary
A rear panel, which is an external member, includes a frame portion including multiple sound radiation holes including a first sound radiation hole, a second sound radiation hole, and a third sound radiation hole. A first sloping portion is disposed within an area of the first sound radiation hole and is inclined with respect to a thickness direction of the frame portion towards a first direction non-parallel to the thickness direction, and a second sloping portion is disposed within an area of the second sound radiation hole and is inclined with respect to the thickness direction of the frame portion towards a second direction different from the first direction and non-parallel to the thickness direction, and the third sound radiation hole includes a surface parallel to the thickness direction of the frame portion.