Speaker Module Housing Segmentation for Deformation Control
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Solution Overview
Problem
Speaker module housings prone to deformation due to large metal sheets, leading to acoustic performance issues as the connection between metal and plastic housings fails, causing voice chamber leakage.
Innovation Solution
A speaker module housing design featuring multiple metal sheets fixedly connected by a separation portion, with one metal sheet edge lapsing over the connection portion to distribute stress and prevent deformation, ensuring a secure bond with the plastic housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a large area metal sheet is embedded into the plastic housing to reduce thickness, then the speaker module becomes thinner and lighter, but the housing becomes soft and prone to deformation
Solution Approach 1:
The patent divides a single large metal sheet into multiple smaller metal sheets (first metal sheet and second metal sheet) separated by a connection portion. This segmentation reduces the span of each metal sheet, preventing deformation while maintaining the thin and light design. The connection portion acts as a support structure that further stabilizes the metal sheets without adding significant thickness.
2Length of moving object
If a large area metal sheet is used to reduce thickness, then the speaker module becomes more compact, but the bonding portion between metal sheet and plastic housing breaks due to differential deformation during heating
Solution Approach 1:
By segmenting the metal sheet into multiple smaller pieces with connection portions between them, the patent reduces the differential deformation stress on each bonding portion. The connection portions act as intermediate structures that accommodate thermal expansion differences, preventing bond failure during heating operations.
Solution Approach 2:
The patent applies different structural characteristics to different parts of the housing. The connection portions have specific structural features (such as stepped structures or recesses) that are optimized for bonding with metal sheets, while other parts of the housing maintain their original plastic properties. This local optimization ensures reliable bonding at critical interfaces.
3Length of moving object
If a large area metal sheet is embedded to achieve thin design, then the speaker module thickness is reduced, but voice chamber leakage occurs due to housing deformation
Solution Approach 1:
The segmentation of the metal sheet into multiple smaller sheets with connection portions prevents housing deformation that would otherwise cause voice chamber leakage. The connection portions provide structural support that maintains the integrity of the housing and prevents gaps or deformations that could lead to acoustic leakage.
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 solution effectively prevents deformation and maintains acoustic performance by dispersing temperature-induced deformations, ensuring a stable connection between metal sheets and the housing body, thus enhancing the speaker's performance.
Implementation Method 1
As the deformation degree of the large area of metal sheet during heating of the speaker is different from that of the plastic housing, a bonding portion between the metal sheet and the plastic housing is broken
Data Source
AI summary
The present invention provides speaker module housing, a speaker module, and a sounding device. The speaker module housing comprises a housing body and at least two metal sheets fixedly connected to the housing body. The housing body comprises a connection portion which separates the adjacent metal sheets. An edge of the metal sheet laps over the connection portion.