Sound Device Steel Sheet Embedded Bottom Plate Vibration
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Solution Overview
Problem
Existing sound devices face challenges with vibration and heat dissipation due to the use of foam, which occupies space and has poor thermal conductivity.
Innovation Solution
A sound device design featuring a bottom plate with a steel sheet embedded in a main plate, forming a recess to securely fix the sound unit via spot welding, reducing height and enhancing thermal dissipation while stabilizing the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If foam is attached to the back of the sound unit to connect with the bottom housing, then vibration of the housing is avoided, but the device height increases and heat dissipation performance deteriorates
Solution Approach 1:
The patent removes the foam material from the connection between the sound unit and bottom housing, extracting the problematic element that caused both height increase and poor heat dissipation. Instead, a direct rigid connection structure is implemented through the bottom plate opening and housing wall integration.
Solution Approach 2:
The patent employs a composite structure combining the bottom plate, housing wall, and sound unit in an integrated assembly. This composite construction eliminates the need for separate foam dampers while maintaining vibration resistance through the rigid structural connection.
2Stability of the object's composition
If foam is attached to the back of the sound unit to connect with the bottom housing, then vibration of the housing is avoided, but heat dissipation performance deteriorates
Solution Approach 1:
The patent removes the foam thermal insulator that hindered heat dissipation. By eliminating this thermal barrier and implementing direct structural contact between the sound unit and bottom housing, heat can conduct more effectively through the rigid materials.
Solution Approach 2:
The integrated composite structure of bottom plate and housing wall provides superior thermal conduction pathways compared to foam insulation, enabling efficient heat dissipation while maintaining structural stability.
3Length of stationary object
If a steel sheet is embedded in the bottom plate with a recess to fix the sound unit, then device height is reduced and heat dissipation is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines the bottom plate and housing wall into an integrated assembly where the housing wall extends through an opening in the bottom plate. This merging of components creates the recess structure in one manufacturing process, simplifying production despite the complex geometry.
Solution Approach 2:
The bottom plate and housing wall structure serves multiple functions simultaneously: it provides the recess for sound unit mounting, maintains compact device height, enables heat dissipation pathways, and ensures structural stability. This multi-functionality reduces the need for separate manufacturing steps.
4Stability of the object's composition
If a steel sheet is embedded in the bottom plate with a recess to fix the sound unit, then housing stability is improved, but device complexity increases
Solution Approach 1:
The patent merges the bottom plate and housing wall into a unified structural assembly, where the housing wall passes through the bottom plate opening to form an integrated recess. This consolidation reduces the number of separate parts while achieving the stability-enhancing recess structure.
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 solution effectively reduces vibration, minimizes device height, and improves heat dissipation by securely fixing the sound unit and enhancing thermal conductivity.
Implementation Method 1
the foam has a poor thermal conductivity, which is not beneficial for the sound device to dissipate heat
Implementation Method 2
one side of the sound unit away from the diaphragm is welded and fixed with the steel sheet
Data Source
AI summary
The present invention provides a sound device, which includes a housing and a sound unit with a diaphragm. The housing includes a cover plate and a bottom plate, the cover plate and the bottom plate are matched to form an accommodating cavity, and the sound unit is fixedly placed in the accommodating cavity. The bottom plate includes a main plate and a steel sheet embedded in the main plate, the main plate is provided with a first opening, the steel sheet is fixedly connected with the main plate and covers the first opening, and one side of the sound unit away from the diaphragm is welded and fixed with the steel sheet.