Low Distortion Flat Diaphragm with Mass Balancing and X-Shaped Wiring
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Solution Overview
Problem
Conventional flat diaphragms in electroacoustic devices suffer from sound distortion due to unbalanced mass distribution and high rigidity, leading to cutting oscillation and poor sound quality.
Innovation Solution
A low distortion flat diaphragm design with an electric transduction coil located in the vibrating region and coil terminals and wiring in the fixing region, featuring mass balancing lines and fan-out leads that match the mass center with the mechanical center, and brim compliant balancing lines arranged in an X shape to reduce rigidity and enhance compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrical transduction coil is located to bestride the fixing region and the vibrating region, then the coil can be securely mounted and wired, but the rigidity of the fixing region and vibrating region becomes too high, aggravating sound distortion
Solution Approach 1:
The patent divides the coil structure into multiple segments: the coil body is positioned in the vibrating region while the coil terminals and wiring are separated into the fixing region. This segmentation allows the coil to be securely mounted without excessive wiring across the vibrating region, thereby maintaining structural reliability while reducing sound distortion.
Solution Approach 2:
The patent applies different structural qualities to different regions: the fixing region is designed with higher rigidity to provide stable mounting for the coil terminals and wiring, while the vibrating region is designed with optimized mass distribution to minimize sound distortion. This local differentiation resolves the contradiction between mounting reliability and sound quality.
2Device complexity
If the electrical transduction coil is located in the conventional position, then the wiring is simplified, but the mass center does not match the mechanical center, generating cutting oscillation
Solution Approach 1:
The patent employs asymmetric mass distribution through the mass balancing line design, which is positioned to offset the mass of the coil and wiring components. This asymmetric configuration ensures that the mass center coincides with the mechanical center, eliminating cutting oscillation while allowing the coil to be positioned for simplified wiring.
Solution Approach 2:
The mass balancing line acts as a counterweight element that compensates for the mass imbalance introduced by the coil and wiring components. By strategically positioning this balancing element, the patent achieves mass center alignment without complicating the wiring arrangement.
3Ease of manufacture
If the coil terminals and wiring are placed in the vibrating region, then connection is simplified, but the rigidity increases and low-frequency performance deteriorates
Solution Approach 1:
The patent segments the electrical connection components: coil terminals and wiring are placed in the fixing region rather than the vibrating region. This segmentation simplifies the connection process while preventing excessive rigidity in the vibrating region, thereby maintaining low-frequency performance.
Solution Approach 2:
The fixing region serves as an intermediary zone that houses the coil terminals and wiring, acting as a buffer between the electrical connection requirements and the acoustic performance requirements. This intermediary placement simplifies connections without compromising low-frequency response.
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 effectively reduces cutting oscillation, sound distortion, and enhances low-frequency performance by matching the mass center with the mechanical center and reducing rigidity, resulting in improved sound quality and reduced resonant frequency.
Implementation Method 1
the electric transduction coil drives the flat diaphragm to move synchronously in the magnetic field as the audio signal changes
Implementation Method 2
a mass balancing line that makes a mass center of the vibrating region be matched with a mechanical center
Implementation Method 3
the fan-out lines of the electrical transduction coil employ a narrow linewidth diffusing fan-out locating and wiring manner... the brim compliant balancing lines are matched with the fan-out lines to improve the compliant consistence at the brims
Data Source
AI summary
A low distortion flat diaphragm provided with a diaphragm. A periphery of the diaphragm is defined as a fixing region and a middle portion thereof is defined as a vibrating region. The diaphragm is provided with an electric transduction coil located in the vibrating region, and a coil terminal and coil locating and wiring located in the fixing region. The diaphragm is further provided with a mass balancing line that makes a mass center of the vibrating region be matched with a mechanical center. The diaphragm is further provided with two brim compliant balancing lines. The brim compliant balancing lines and fan-out lines are symmetrically arranged in an X shape relative to a center axis of the diaphragm. The utility model eliminates cutting oscillation and sound distortion generated by unbalanced distribution of mass of the diaphragm effectively in a locating and wiring way of improving the electric transduction coil.