Speaker Edge Support Structure for Diaphragm Motion Restriction
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Solution Overview
Problem
Existing speakers face issues with excessive diaphragm motion due to unanticipated pressure changes, leading to deformation and inversion of the edge member, which complicates assembly and reduces acoustic quality.
Innovation Solution
A speaker design with a frame, diaphragm, edge member, and magnetic driving portion, incorporating an edge support member with a restricting portion that faces the edge member with a gap, and a vent extending inward, allowing precise positioning and preventing excessive deformation during assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibrator restricting portion is provided between the edge member and damper to prevent excessive diaphragm motion, then the reliability is improved, but the device complexity increases due to additional components and complex assembly procedures
Solution Approach 1:
The patent combines the edge support member and restricting portion into a single integrated component. The edge support member includes both the edge support portion that supports the edge member and the restricting portion that restricts diaphragm motion, eliminating the need for separate components and simplifying assembly while maintaining reliability
Solution Approach 2:
The edge support member serves multiple functions: it supports the edge member, restricts excessive diaphragm motion, and provides structural stability. This multi-functional design reduces the number of components needed while achieving the desired reliability improvement
2Manufacturing precision
If the restricting portion forming member is fixed with adhesive to position it precisely, then the manufacturing precision is improved, but the ease of manufacture deteriorates due to complex assembly work
Solution Approach 1:
The edge support member and restricting portion are manufactured as a single integrated piece, eliminating the need for separate positioning and adhesive bonding operations. This integration maintains precise positioning while significantly simplifying the manufacturing and assembly processes
3Reliability
If the restricting portion is positioned close to the edge member to effectively restrict motion, then the reliability is improved, but the acoustic quality deteriorates due to increased air flow resistance
Solution Approach 1:
The restricting portion is designed with multiple segments or openings that allow controlled air flow. This segmentation enables the restricting portion to effectively limit diaphragm motion while maintaining adequate air permeability to prevent acoustic quality degradation
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 design effectively restricts excessive diaphragm motion, simplifies assembly, maintains acoustic quality, and reduces part count by integrating the edge support member as a gasket and vibration restrictor.
Implementation Method 1
a magnetic driving portion that causes the diaphragm to vibrate
Implementation Method 2
when the diaphragm and edge member move toward a magnetic circuit, the vibrator restricting portion restricts the flow of air. This increases resistance to the operation of the diaphragm
Data Source
AI summary
In a frame, a diaphragm and an edge member are provided on a first side, and a magnetic driving portion having a magnetic circuit and a voice coil is provided on the second side. An edge support member is interposed between the edge accepting portion of the frame and the outer circumference fixing portion of the edge member. Part of the edge support member is a restricting portion extending toward the center of the frame. The restricting surface of the restricting portion faces the back of the edge member and diaphragm so as to be spaced with a distance.