Speaker Diaphragm Curved Geometry Prevents Circuit Collisions
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Solution Overview
Problem
In existing speaker designs, the insufficient space between the inner side of the lower vibrating diaphragm and the flexible circuit board leads to collisions during vibration, resulting in defective speakers with poor sound quality and abnormal performance.
Innovation Solution
The speaker's lower vibrating diaphragm is redesigned with a specific shape, including a first connecting portion that forms a 90-degree angle with the middle portion, ensuring a certain distance from the flexible circuit board, thereby preventing collisions and enhancing vibration space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lower vibrating diaphragm is positioned close to the flexible circuit board to reduce space, then the compactness of the speaker is improved, but the space between the inner side of the vibrating portion and the flexible circuit board becomes insufficient, causing collisions during vibration
Solution Approach 1:
The inner side of the vibrating portion of the lower vibrating diaphragm is designed with a curved surface instead of a flat surface. This curvature allows the vibrating portion to maintain a greater distance from the flexible circuit board during vibration, preventing collisions while keeping the overall speaker compact. The curved surface geometry enables the diaphragm to vibrate without the inner side contacting the circuit board.
2Reliability
If the lower vibrating diaphragm is redesigned with a specific shape including a first connecting portion at 90 degrees, then the vibration space is enhanced and collisions are prevented, but the structural complexity of the diaphragm increases
Solution Approach 1:
The lower vibrating diaphragm is segmented into distinct portions: a vibrating portion, a first connecting portion, and a second connecting portion. The first connecting portion connects the vibrating portion to the frame at a 90-degree angle, while the second connecting portion connects to the flexible circuit board. This segmentation allows each portion to be optimized for its specific function, preventing collisions while maintaining manufacturability.
3Object-generated harmful factors
If the inner side of the vibrating portion is kept at a distance from the flexible circuit board, then sound quality is improved by preventing collisions, but the overall size of the speaker increases
Solution Approach 1:
The solution addresses the space problem by utilizing the vertical dimension through the curved surface design and the angular connection (90 degrees) of the first connecting portion. Instead of increasing horizontal spacing, the invention uses vertical and angular dimensions to maintain the required distance between the vibrating portion and the flexible circuit board, thereby preventing collisions without significantly increasing the overall speaker footprint.
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 improves sound quality and stability by maintaining a consistent distance between the vibrating diaphragm and the flexible circuit board, preventing collisions and ensuring reliable speaker performance.
Implementation Method 1
a voice coil 24 connected with the upper vibrating diaphragm 22 for driving the upper vibrating diaphragm 22 to vibrate
Data Source
AI summary
The present application discloses a speaker having a vibrating system and a flexible circuit board. The vibrating system has a lower vibrating diaphragm with a first fastening portion, a second fastening portion, and a vibrating portion having a first connecting portion and a second connecting portion and a middle portion. A vertical distance between a tangent line along a vibrating direction at first end of the first connecting portion and another tangent line along the vibrating direction at the second end of the first connecting portion is a first distance; another vertical distance between a tangent line along the vibrating direction at third end and another tangent line along the vibrating direction at the fourth end is a second distance. The first distance is shorter than the second distance. The acoustic quality of speaker can be improved.