Speaker Module Pressure Relief Gland Extraction
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Solution Overview
Problem
Existing speaker module designs require complex housing shapes and high processing requirements for pressure relief grooves, leading to low yield and limitations in width and depth, which complicates the manufacturing process.
Innovation Solution
A speaker module with a pressure relief device featuring a pressure relief hole and groove arrangement on a gland, allowing for easier processing and improved yield, where the pressure relief grooves are strategically placed on the gland rather than the housing, enabling better air pressure balance and acoustic sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure relief grooves are arranged on the housing, then the pressure relief function is achieved, but the housing shape becomes complicated and manufacturing requirements increase
Solution Approach 1:
The pressure relief groove is extracted from the housing and transferred to the gland. This separates the pressure relief function from the housing structure, allowing the housing to maintain a simple shape while the gland carries the pressure relief groove to achieve the same pressure relief effect.
Solution Approach 2:
The pressure relief system is segmented into two parts: the pressure relief hole in the housing and the pressure relief groove on the gland. This segmentation allows each component to have a simpler design while working together to achieve the overall pressure relief function.
2Reliability
If pressure relief grooves are arranged on the housing, then the pressure relief passage is formed, but processing difficulty increases and yield decreases
Solution Approach 1:
The pressure relief groove is extracted from the housing and placed on the gland, which is a separate component. This makes processing easier because the gland can be manufactured independently with standard molding techniques, avoiding the need for complex housing processing.
3Reliability
If pressure relief grooves are arranged on the housing, then the acoustic seal is achieved, but limitations on width and depth occur due to mold constraints
Solution Approach 1:
The pressure relief groove is extracted from the housing and placed on the gland, which provides greater design freedom. The gland can be molded with various groove dimensions (width, depth, length) without being constrained by housing mold limitations, allowing optimization of the acoustic seal performance.
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
This design simplifies processing, increases yield, and allows for flexible size adjustments of pressure relief grooves, effectively balancing air pressure and achieving an acoustic seal between the rear acoustic cavity and the external environment.
Implementation Method 1
communicate the rear acoustic cavity with an external environment and implement an acoustic seal, the pressure relief device comprises a pressure relief hole extending through a thickness direction of the housing
Implementation Method 2
the pressure relief hole is provided with a mesh on the other side away from the rear acoustic cavity. Preferably, the mesh is a waterproof and air-permeable mesh.
Data Source
AI summary
The present invention discloses a speaker module, comprising a housing and a speaker unit located in an inner cavity of the housing and dividing the inner cavity into a front acoustic cavity and a rear acoustic cavity separated from each other, wherein the housing is additionally provided with a pressure relief device configured to communicate the rear acoustic cavity with an external environment and implement an acoustic seal, the pressure relief device comprises a pressure relief hole extending through a thickness direction of the housing and provided with a gland on one side close to the rear acoustic cavity, and a pressure relief groove is disposed at a surface of the gland close to the pressure relief hole, one end of the pressure relief groove is connected with the pressure relief hole, the other end of the pressure relief groove is led out of an end of the gland, and the pressure relief groove and the pressure relief hole together make up a pressure relief passage of the rear acoustic cavity. The pressure relief grooves of the pressure relief devices of the speaker modules are arranged on the gland, which makes processing easier and can effectively improve the yield of the speaker module.