Bar-Shaped Moving-Coil Transducer Support Structure
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Solution Overview
Problem
Traditional moving-coil electroacoustic transducers face issues with biased vibration and deformation of long-axis edges due to complex design requirements and manufacturing processes, particularly in bar-shaped configurations for thin electronic products.
Innovation Solution
A bar-shaped moving-coil electroacoustic transducer with an integrally formed acoustic coil support featuring a central mounting portion, end-mounted plucked members, and a support portion between long-axis edges, made from aluminum with insulating coatings, simplifies manufacturing and stabilizes the vibration system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional separate-part acoustic coil support design is used, then assembly flexibility is improved, but manufacturing complexity and process difficulty increase
Solution Approach 1:
The patent merges multiple separate support parts into a single integrally formed acoustic coil support. The support includes a support body with a support surface for the acoustic coil, a first support portion extending from the support surface to support the first long-axis edge, and a second support portion extending from the support surface to support the second long-axis edge, all formed as one piece. This integration eliminates the need for separate components and complex assembly processes while maintaining structural functionality.
Solution Approach 2:
The integrally formed support is segmented into distinct functional regions: the support body providing the mounting surface, the first support portion for one long-axis edge, and the second support portion for the other long-axis edge. This segmentation within a single component allows each region to be optimized for its specific function while avoiding the complexity of multiple separate parts.
2Length of stationary object
If bar-shaped transducer design is used for thin products, then product thickness is reduced, but biased vibration and long-axis edge deformation occur
Solution Approach 1:
The patent applies preliminary anti-action by designing support portions that preemptively counteract the deformation forces acting on the long-axis edges. The first and second support portions extend from the support surface to respectively support the first and second long-axis edges of the acoustic coil, preventing biased vibration and edge deformation before they can occur during operation.
Solution Approach 2:
The support structure applies local quality by providing targeted support at specific locations: the support surface contacts the acoustic coil body, while the first and second support portions specifically target the long-axis edges. This localized support distribution addresses the specific deformation risks at different locations of the acoustic coil without requiring overall structural changes.
3Reliability
If acoustic coil support is designed with extended length for effective coil support, then coil support effectiveness is improved, but deformation of long-axis edges increases
Solution Approach 1:
The support structure applies local quality by providing targeted support at specific locations: the support surface contacts the acoustic coil body, while the first and second support portions specifically target the long-axis edges. This localized support distribution addresses the specific deformation risks at different locations of the acoustic coil without requiring overall structural changes.
Solution Approach 2:
The patent applies preliminary anti-action by designing support portions that preemptively counteract the deformation forces acting on the long-axis edges. The first and second support portions extend from the support surface to respectively support the first and second long-axis edges of the acoustic coil, preventing biased vibration and edge deformation before they can occur during operation.
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 biased vibration and deformation while simplifying the manufacturing process, ensuring stable operation and improved performance of the transducer.
Implementation Method 1
the sound generating principle of the moving-coil electroacoustic transducer is that the acoustic coil applied with an alternating current signal is forced to vibrate in the magnetic field
Implementation Method 2
The magnetic field generated by the acoustic coil and the magnetic field generated by the magnetic circuit system will act with each other so that the acoustic coil generates vibration
Implementation Method 3
disposed with anti-biased vibration means such as plucked members
Data Source
AI summary
A moving-coil electroacoustic transducer is provided which is bar-shaped and includes a vibration system. The vibration system includes a vibration diaphragm, a bar-shaped acoustic coil, an acoustic coil support, and two plucked members. The acoustic coil sleeves the acoustic coil support and is combined with the vibration diaphragm through the acoustic coil support. The acoustic coil support is integrally formed; and includes an acoustic coil mounting portion located in the middle, dampening member mounting portions located at the two ends, and a support portion disposed between two long-axis edges of the acoustic coil mounting portion.