Speaker Damper Deformation Prevention for Slim Diaphragm Rigidity
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Solution Overview
Problem
Slim speakers face structural deformation issues due to their elongated shape, leading to instability in sound pressure distribution, especially in medium to high frequency bands, as they lack sufficient structural reinforcement.
Innovation Solution
A speaker design incorporating a damper with symmetrical metal plates and deformation prevention members that protrude along the major-axis direction to prevent vertical deformation, enhancing the rigidity and stability of the diaphragm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the speaker adopts an oval or rectangular shape to achieve slim design, then the speaker becomes thinner and slimmer, but the diaphragm structure becomes vulnerable to bending strength and structural deformation
Solution Approach 1:
The damper is divided into multiple metal plates (first metal plate and second metal plate) with deformation prevention members protruding from each. This segmentation allows the structure to maintain slim overall dimensions while adding localized reinforcement elements that prevent diaphragm bending without increasing the speaker's thickness.
Solution Approach 2:
Deformation prevention members are added in a third dimension (protruding downward from the bottom surfaces of metal plates) to provide structural reinforcement. This vertical protrusion creates rigidity along the major-axis direction without expanding the speaker's horizontal footprint or thickness.
2Strength
If support structure is added to upper and lower portions of the diaphragm to reinforce strength, then the diaphragm strength is improved, but the device complexity increases
Solution Approach 1:
The deformation prevention members are integrally formed with the metal plates of the damper, merging the support function with the existing damper structure. This integration provides diaphragm reinforcement without adding separate complex support components, maintaining structural simplicity while enhancing strength.
Solution Approach 2:
The metal plates serve multiple functions: they act as the damper structure for vibration control, provide mounting surfaces for deformation prevention members, and collectively reinforce the diaphragm. This multi-functionality reduces the need for additional dedicated support structures, simplifying the overall device.
3Stability of the object's composition
If deformation prevention members are added to prevent structural deformation, then the diaphragm rigidity is improved, but the manufacturing complexity increases
Solution Approach 1:
The deformation prevention members are formed as integral parts of the metal plates during the damper manufacturing process. By incorporating these reinforcement elements in advance during metal plate fabrication, the final assembly becomes simpler and the diaphragm rigidity is ensured without adding complex post-assembly steps.
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 solution effectively prevents structural deformation, improves sound quality, and increases the stability of sound pressure distribution across various frequency bands by reinforcing the diaphragm's rigidity and supporting its vertical movement.
Implementation Method 1
the first and second deformation prevention members protrude downward and extend along a major-axis direction of the diaphragm, and are configured to prevent deformation of the diaphragm caused by a vertical load
Implementation Method 2
a damper configured to adjust vibration of the diaphragm and comprising a first and second metal plates having polarities that are different from each other and being symmetrical with each other
Data Source
AI summary
A speaker includes: a diaphragm; and a damper configured to adjust vibration of the diaphragm and including a first and second metal plates having polarities that are different from each other and symmetrical with each other, wherein the damper further includes first and second deformation prevention members disposed on bottom surfaces of the first and second metal plates, respectively, and wherein first and second deformation prevention members protrude downward and extend along a major-axis direction of the diaphragm, and the first and second deformation members are configured to prevent deformation of diaphragm caused by a vertical load.