Micro Sound Device Inversion Reduces Vibration Thickness
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Solution Overview
Problem
Conventional micro sound devices face challenges in miniaturization due to space occupation in the vibration direction by the lower diaphragm and magnetic bowl structure, limiting their thinness and functionality, especially in mobile phone applications.
Innovation Solution
The micro sound device design incorporates a vibration system with an upper diaphragm, voice coil, and support apparatus, including a folded ring structure that reduces thickness by positioning the folded ring opening away from the support apparatus, allowing for a more compact configuration within the basket, which houses the magnetic circuit system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lower diaphragm and magnetic bowl are positioned in the conventional structure, then the device can be assembled with standard components, but the vibration direction thickness increases and miniaturization is limited
Solution Approach 1:
The patent inverts the conventional arrangement by positioning the folded ring of the lower diaphragm to face away from the magnetic bowl, instead of facing it as in traditional designs. This inversion repositions components to reduce the thickness in the vibration direction while maintaining functional integrity
Solution Approach 2:
The patent optimizes component layout by utilizing spatial arrangement in multiple dimensions, specifically positioning the magnetic bowl and lower diaphragm folded ring in a configuration that minimizes the thickness dimension (vibration direction) while accommodating all necessary components within the basket structure
2Length of moving object
If the lower diaphragm folded ring faces the magnetic bowl, then the assembly is structurally simple, but space in the vibration direction is occupied and thinness is compromised
Solution Approach 1:
The patent employs asymmetric positioning where the lower diaphragm folded ring is deliberately oriented to face away from the magnetic bowl, creating an asymmetric spatial arrangement that optimizes the thickness profile in the vibration direction while maintaining structural functionality
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 enables a thinner micro sound device with improved sound effects by effectively reducing the vibration direction thickness and optimizing space usage, enhancing the device's miniaturization and performance.
Implementation Method 1
a voice coil 33 located below the upper diaphragm 31 and configured to drive the upper diaphragm 31 to vibrate and produce sound
Implementation Method 2
a magnetic circuit system 5 accommodated in the basket 1 and configured to drive the vibration system 3 to vibrate and produce sound
Data Source
AI summary
The present disclosure provides a micro sound device. The micro sound device includes a basket having an accommodating space, a vibration system secured to the basket, and a magnetic circuit system accommodated in the basket and configured to drive the vibration system to vibrate and produce sound. The vibration system includes an upper diaphragm secured to the basket, a voice coil located below the upper diaphragm and configured to drive the upper diaphragm to vibrate and produce sound, and a support apparatus elastically supporting the voice coil. The support apparatus is disposed opposite to the upper diaphragm and separately from the upper diaphragm. The magnetic circuit system includes an upper clamping plate secured to the basket. One end of the support apparatus is fixed to one side of the upper clamping plate and the other end of the support apparatus is fixed to the voice coil.