Vehicle Microphone Housing Cover With Shifted Dual Grids
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Solution Overview
Problem
The existing microphone assembly for vehicles requires two molds to manufacture the housing cover and shielding cover, leading to increased manufacturing costs.
Innovation Solution
The microphone assembly incorporates a housing cover with a first grid and a second grid that are shifted from each other, forming a path for sound waves while eliminating the need for a shielding cover, thus requiring only one mold for manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate covers (housing cover and shielding cover) are used, then the acoustic membrane is protected from high-pressure water, but the manufacturing cost increases due to requiring two molds
Solution Approach 1:
The patent merges the housing cover and shielding cover into a single integrated housing cover that incorporates both the first grid (housing cover function) and the second grid (shielding cover function). This single-piece structure eliminates the need for two separate molds and assembly operations, reducing manufacturing cost while maintaining water protection capability through the shifted grid arrangement that blocks high-pressure water paths.
2Reliability
If two separate covers (housing cover and shielding cover) are used, then the acoustic membrane is protected from high-pressure water, but the manufacturing time increases
Solution Approach 1:
The patent combines two separate manufacturing processes and assembly operations into a single molding process. The integrated housing cover with first grid and second grid is produced in one piece using one mold, eliminating the sequential manufacturing and assembly steps required for separate covers, thereby reducing total manufacturing time.
3Reliability
If two separate covers (housing cover and shielding cover) are used, then the acoustic membrane is protected from high-pressure water, but the assembly process becomes more complex
Solution Approach 1:
The patent integrates the housing cover and shielding cover functions into a single component, reducing the number of parts from two to one. This simplification eliminates the assembly step of joining the two covers and reduces the overall structural complexity of the microphone assembly while preserving the water protection function through the shifted grid configuration.
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 reduces manufacturing time and costs by eliminating the need for a second mold and simplifying the assembly process, while maintaining the ability to protect the acoustic membrane from high-pressure water and effectively detect emergency vehicles.
Implementation Method 1
a first grid and a second grid that are shifted from each other so as to form a path for sound waves coming from the exterior of the microphone assembly to reach said acoustic membrane
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to microphone assembly (1) for a vehicle, said microphone assembly (1) comprising: - a housing base (10) that is configured to receive an electronic support (11), - said electronic support (11), - an acoustic membrane (12) that is configured to be in contact with said electronic support (11), - a sealing cover (13) that comprises an opening (131) which is configured to be in front of said acoustic membrane (12), - a housing cover (14) that is configured to cover said sealing cover (13), wherein : - said housing cover (14) comprises a first grid and a second grid that are shifted from each other so as to form a path for sound waves (5) coming from the exterior of the microphone assembly (1) to reach said acoustic membrane (12).