Speaker Diaphragm Structure for Dome-Suspension Concentricity
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Solution Overview
Problem
The existing speaker design faces issues with ensuring the concentricity of the dome and suspension, leading to imbalance vibrations and poor reliability due to glue overflow or shortage during their assembly.
Innovation Solution
The dome and suspension are integrally formed with positioning through holes to ensure concentricity, and a waterproof and air-permeable film covers the through holes to enhance reliability, with a magnetic circuit system and mesh enclosure for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dome and suspension are glued together, then the diaphragm can be assembled, but the concentricity cannot be ensured and glue may overflow or be short
Solution Approach 1:
The dome and suspension are integrally formed into a single piece, eliminating the need for gluing. This merging of components ensures perfect concentricity since they are formed as one unit, while also eliminating the reliability issues associated with glue overflow or shortage during assembly.
Solution Approach 2:
The positioning through hole is introduced as a separate feature within the integrally formed dome and suspension structure. This segmentation allows the through hole to serve as a positioning reference during manufacturing while being part of the unified structure, ensuring concentricity without requiring separate gluing operations.
2Reliability
If the dome and suspension are integrally formed, then the reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The dome and suspension are combined into a single integrally formed component, which simplifies the overall assembly process by eliminating the gluing step. Although the forming process itself may be complex, the integration eliminates multiple assembly operations and ensures consistent concentricity, overall reducing manufacturing complexity.
Solution Approach 2:
The positioning through hole is pre-formed during the integral forming process of the dome and suspension. This preliminary creation of the positioning feature ensures that concentricity is built into the structure during manufacturing, simplifying subsequent assembly operations and reducing overall manufacturing complexity.
3Manufacturing precision
If positioning through holes are added to ensure concentricity, then the concentricity is improved, but the structural integrity may be compromised
Solution Approach 1:
A waterproof and air-permeable film is applied to cover the positioning through holes. This film maintains the structural integrity of the diaphragm by sealing the through holes while allowing air permeability for acoustic function. The film acts as a flexible barrier that preserves both the positioning precision and the structural strength.
Solution Approach 2:
The positioning through holes are sealed with a waterproof and air-permeable film, creating a composite structure that combines the positioning function with the sealing function. This composite approach ensures that the through holes do not compromise structural integrity while maintaining the concentricity they provide during manufacturing.
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 ensures concentricity and improves the reliability of the diaphragm by avoiding imbalance vibrations and glue-related issues, while maintaining structural integrity and protection from foreign matter.
Implementation Method 1
a waterproof and air-permeable film attached to the dome, the waterproof and air-permeable film covers the positioning through hole
Implementation Method 2
The dome and the suspension are integrally formed by injection molding or hot pressing
Implementation Method 3
The dome and the suspension are integrally formed by injection molding or hot pressing
Implementation Method 4
a voice coil driving the diaphragm for vibrating and sounding
Data Source
AI summary
A speaker is disclosed. The speaker includes a vibration system, a magnetic circuit system, and a frame for fixing the vibration system and the magnetic circuit system. The vibration system includes a diaphragm and a voice coil driving the diaphragm for vibrating and sounding. The diaphragm includes a dome and a suspension surrounding the dome, and the dome and the suspension are integrally formed. The dome is provided with a positioning through hole for ensuring the concentricity of the dome and the suspension when integrally forming the dome and the suspension. The speaker ensures the concentricity of the dome and the suspension and improves the reliability of the diaphragm.