Movable Sounding Assembly for Reducing Airflow Noise in Terminal Devices
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Solution Overview
Problem
Portable multimedia devices suffer from airflow and piano sounds when in speaker mode, affecting sound quality.
Innovation Solution
A terminal device design featuring a movable sounding assembly with a housing and baffle that changes sound emitting paths between receiver and speaker modes, providing a smoother sound emitting path in speaker mode by using recessed channels and sound emitting holes to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the terminal device uses a conventional speaker structure, then it can emit sound in speaker mode, but it generates airflow sound and piano sound that affect sound quality
Solution Approach 1:
The patent extracts the harmful airflow sound and piano sound generation mechanism by redesigning the sound emission path. The sounding assembly is separated into a movable component that can be positioned to either expose or cover the first sounding channel, thereby extracting the problematic airflow path from the active sound emission mechanism.
Solution Approach 2:
The patent introduces a cover plate as an intermediary element that controls the sound emission path. The cover plate can cover or expose the first sounding channel, acting as a mediator between the sounding body and the external environment to eliminate harmful airflow sounds while maintaining normal speaker function.
2Productivity
If the first sounding channel is always exposed, then sound can be emitted directly, but airflow sound is generated affecting sound quality
Solution Approach 1:
The patent applies dynamics by making the cover plate movable between two positions: covering the first sounding channel during normal operation and exposing it during speaker mode. This dynamic adjustment allows the system to optimize sound emission efficiency while eliminating harmful airflow sounds at different operational states.
Solution Approach 2:
The patent uses preliminary anti-action by positioning the cover plate to cover the first sounding channel before speaker mode activation, preventing harmful airflow sounds from generating in the first place. The cover plate is预先 positioned to block the problematic path before the harmful effect can occur.
3Object-affected harmful factors
If the sounding assembly is made movable to control sound paths, then airflow sound can be reduced, but device complexity increases
Solution Approach 1:
The patent segments the sounding assembly into distinct functional components: the sounding body, the housing with first sounding channel, and the cover plate. This segmentation allows each component to perform its specific function independently, simplifying the overall design while achieving the goal of reducing airflow sound through controlled movement.
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
Enhances sound quality by reducing airflow and piano sounds in speaker mode, improving user experience through optimized sound propagation.
Implementation Method 1
the sound generated by the sounding assembly is propagated to the outside of the terminal device
Data Source
AI summary
The invention provides a terminal device having a main body, a sounding assembly and a cover plate. The sounding assembly includes a housing and a sounding body. The housing has an accommodating groove and a first sounding channel. The main body has a second sounding channel and a first sound emitting hole. The cover plate has a first through hole. When the sounding assembly is located at the first position, the sound is propagated to the outside through the first through hole, the second sounding channel and the first sound emitting hole in sequence. When the sounding assembly is located at the second position, the sound is propagated to the outside through the first sounding channel. The present invention improves the problem that the sound effect is affected by airflow sound, piano sound, etc., generated by the terminal device in the speaker mode.