Multifunctional Acoustic Device Waterproof Sealing Structure
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Solution Overview
Problem
Existing electronic devices lack effective waterproofing in their sound channels, leading to water vapor and dust ingress, which affects speaker performance.
Innovation Solution
A multifunctional acoustic device design featuring a cover with a sound hole, an acoustic member with a magnetic circuit system, a sound channel, and a sealing element with a flexible connector and fixing frames to ensure waterproof sealing, allowing the acoustic member to communicate with the outside only through the sound channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sound channel is directly fixed with the cover of the overall device, then the structure is simple, but water vapor or dust enters the rear cavity of the speaker, affecting the performance of the speaker
Solution Approach 1:
The sealing element is divided into multiple components: an outer fixing frame mounted on the cover, an inner fixing frame mounted on the sound channel, and a flexible connector connecting them. This segmentation allows the sealing structure to adapt to different surfaces while providing effective waterproofing for the sound channel opening.
Solution Approach 2:
The sealing element acts as an intermediary component between the cover and the sound channel, creating a sealed connection that prevents water vapor and dust from entering the rear cavity while maintaining the acoustic function of the sound channel.
2Reliability
If a sealing element is added to cover the sound hole and sound channel, then waterproof sealing is improved, but the volume occupied by the sealing element increases
Solution Approach 1:
The sealing element utilizes a flexible connector that can bend and conform to the space between the outer fixing frame and the inner fixing frame. This flexible film-like structure provides effective sealing while occupying minimal volume, allowing the acoustic device to maintain good sealing performance without significantly increasing overall size.
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
The design enhances waterproof sealing, minimizes the volume occupied by the sealing element, and maximizes the internal space, thereby improving the acoustic performance and functionality of the device.
Implementation Method 1
a magnetic circuit system driving the diaphragm to vibrate and generate sounds along a first direction
Implementation Method 2
the coil is energized by the magnetic circuit system to drive the acoustic member to vibrate along a second direction perpendicular to the first direction
Data Source
AI summary
The present invention provides a multifunctional acoustic device includes a cover enclosing an accommodating cavity and an acoustic member. The cover has a sound hole. The acoustic member includes a housing, a vibration system having a diaphragm, and a magnetic circuit system driving the diaphragm. The diaphragm divides a space of the housing into a front acoustic cavity and a rear acoustic cavity. The multifunctional acoustic device includes a sound channel communicating the front acoustic cavity to an outside of the sound hole and a sealing element located on an outer side of the cover. The sealing element is arranged covering a peripheral side of the sound hole and the sound channel so that the acoustic member communicates with the outside only through the sound channel.