Foldable Sound Unit Duct Layout for Stable Audio Radiation
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Solution Overview
Problem
Existing electronic devices with flexible displays face challenges in maintaining stable sound performance as they change states, such as folding and unfolding, due to inconsistent sound radiation directions.
Innovation Solution
The electronic device incorporates a sound unit positioned in a housing that adjusts its sound radiation direction based on the device's state, using ducts and sealing portions to ensure consistent sound output and input across different configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the second housing moves relative to the first housing between closed and open states, then the display area is expanded, but the sound radiation direction becomes inconsistent
Solution Approach 1:
The sound unit is positioned in the second housing to radiate sound in different directions depending on the relative position between housings. In the closed state, sound radiates along the first side surface; in the open state, sound radiates through the second side surface. This dynamic adjustment of sound radiation direction based on device state resolves the contradiction between display area expansion and sound performance stability.
2Reliability
If ducts are aligned in closed state, then sound output is consistent, but device structure becomes complex
Solution Approach 1:
The duct structure serves multiple functions: it guides sound from the sound unit to different radiation directions based on housing position, and the sealing portion maintains acoustic sealing in both closed and open states. This multi-functional design achieves consistent sound output without requiring separate duct systems for different states.
Solution Approach 2:
The sealing portion acts as an intermediary element between the ducts and housing surfaces, ensuring proper acoustic sealing and maintaining duct alignment effectiveness in both closed and open states, thereby simplifying the overall duct structure while maintaining sound output consistency.
Data Source
AI summary
An electronic device is provided. The electronic device includes a first housing, a second housing, a display, and a sound unit configured to output or receive a sound, the sound unit being disposed in the second housing such that the sound is radiated in a first direction through a second side surface in an open state and radiated in a second direction different from the first direction along a first side surface in a closed state.