Open-Chamber Speaker Sound Chamber Sealing for Thin Waterproof Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sealing methods fail to effectively seal electronic devices using speakers with open chambers, leading to poor audio performance and waterproofing issues.
Innovation Solution
A sound chamber structure is designed with a middle frame assembly and sealing dustproof member, incorporating a screen assembly to enclose an equivalent sound chamber, ensuring effective sealing and waterproofing while reducing device thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a speaker with an open chamber is used to reduce device thickness, then device thickness is reduced, but sealing performance deteriorates
Solution Approach 1:
The sealing structure is divided into multiple components: a sealing ring, a sealing protrusion on the speaker frame, and a corresponding sealing groove on the middle frame. This segmentation allows the sealing function to be distributed across multiple elements, enabling effective sealing even with the open chamber design that reduces overall device thickness.
Solution Approach 2:
The sealing ring acts as an intermediary element between the speaker frame and the middle frame. It provides the sealing function without requiring the traditional compressed sealing rubber ring method, thus maintaining sealing performance while accommodating the thinner open chamber speaker design.
2Reliability
If a conventional sealing method with compressed sealing rubber ring is used, then sealing performance is improved, but device thickness increases
Solution Approach 1:
The invention extracts the sealing function from the traditional compressed sealing rubber ring structure and relocates it to a protrusion-groove interface with a sealing ring. This extraction eliminates the need for thick compressed sealing layers, thereby reducing device thickness while maintaining sealing effectiveness.
Solution Approach 2:
Instead of compressing a sealing ring from the outside (conventional method), the invention uses a protrusion that fits into a groove with the sealing ring, inverting the sealing mechanism. This inversion allows sealing without the thickness penalty of heavily compressed rubber rings.
3Length of moving object
If the front chamber volume is reduced for thinning, then device thickness is reduced, but audio performance deteriorates
Solution Approach 1:
The invention optimizes the spatial arrangement of the open chamber and sound outlet in three-dimensional space. By carefully designing the chamber geometry and sound outlet positioning, sufficient acoustic volume is maintained within the thinned profile, preserving audio performance despite reduced thickness.
Data Source
AI summary
This application discloses a sound chamber structure and an electronic device. The sound chamber structure includes a middle frame assembly, a screen assembly, and a speaker. The middle frame assembly includes a middle frame and a sealing dustproof member. The middle frame includes a first through hole. The sealing dustproof member includes a second through hole. The sealing dustproof member is attached to a second surface of the middle frame and covers the first through hole, and the first through hole and the second through hole are in communication. The screen assembly is attached to a first surface of the middle frame, and the speaker is attached to the sealing dustproof member. The speaker includes an open chamber facing the first through hole, and the open chamber, the second through hole, the first through hole, and the screen assembly enclose an equivalent sound chamber of the speaker.