Microspeaker Frame Duct for Bass and Sealing
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Solution Overview
Problem
Conventional microspeaker structures face challenges in improving bass performance and mid-frequency sound quality due to difficulties in precise coupling and complete sealing, leading to deviations and reduced production efficiency.
Innovation Solution
A microspeaker structure featuring a duct formed in the circumferential direction of the frame to guide air flow, with a duct plate that includes a damping member and sound outlets, enhancing bass performance and mid-frequency control by reducing deviations and improving manufacturing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a duct and reactive control part are added to improve bass performance and sound quality, then audio performance is improved, but manufacturing complexity and difficulty increase due to precise coupling and sealing requirements
Solution Approach 1:
The patent integrates the duct and reactive control part directly into the frame structure of the speaker driver. The duct is formed as a circumferential groove in the frame, and the reactive control part is positioned within the same frame structure, eliminating the need for separate coupling operations between housings and speaker drivers. This merging approach maintains audio performance while significantly reducing manufacturing complexity and sealing difficulties.
2Reliability
If separate housings are coupled to the speaker driver to accommodate duct and reactive control part, then audio functionality is achieved, but production efficiency decreases due to high difficulty in complete sealing and coupling
Solution Approach 1:
The patent consolidates the duct and reactive control part into the speaker driver's frame structure, eliminating separate housing components. This integration removes multiple coupling and sealing operations from the manufacturing process, directly improving production efficiency while maintaining or enhancing sealing integrity through the unified structure.
3Manufacturing precision
If quantitative management of reactive control part and duct is performed in conventional structure, then assembly is attempted, but deviation occurs easily in coupled portions leading to reduced manufacturing precision
Solution Approach 1:
By integrating the duct and reactive control part into the frame structure, the patent eliminates multiple coupled portions that require precise alignment. The unified structure removes the need for quantitative management and precise positioning operations, significantly improving manufacturing precision while easing the assembly process.
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 proposed structure enhances bass performance and sound quality by controlling mid-frequency characteristics, while reducing deviations and improving production efficiency through precise duct and reactive element placement.
Implementation Method 1
when an external electric signal is applied to the voice coil, the voice coil is vibrated by electromagnetic force. When the voice coil is vibrated, the diaphragm vibrates and converts the electric signal into sound waves (sounds)
Implementation Method 2
a duct (220) configured to guide an air flow is formed in the circumferential direction of the frame (240)
Implementation Method 3
The duct plate (250) may be made of adhesive tape, material in which a damping member is combined with adhesive tape
Data Source
AI summary
Disclosed herein is the structure of a microspeaker. The structure of the microspeaker includes: a frame configured to have an internal space, a magnetic field part disposed inside the frame and configured to form an air gap along with the frame, and a diaphragm configured to vibrate vertically in response to the operation of a voice coil located inside the air gap. A duct configured to guide an air flow is formed in the circumferential direction of the frame. At least one frame hole is formed such that air enters the duct from the internal chamber of the frame. At least one duct sound outlet is formed such that air having entered the duct is discharged to the outside through the guide path of the duct.