Speaker Assembly Magnetic Field Counteracting Component
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Solution Overview
Problem
Speakers in electronic devices like mobile phones and earphones suffer from electromagnetic interference due to internal components, leading to noise and degraded performance, especially as sensitivity increases, with existing shielding solutions being costly and ineffective in providing comprehensive coverage.
Innovation Solution
A speaker assembly with a magnetic field counteracting component, comprising a conductor and an insulating layer, is arranged on the audio component's end face facing the battery, generating a counteracting magnetic field that cancels out the interfering magnetic field from the battery, improving sound quality and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional shielding solutions are used to reduce electromagnetic interference, then noise reduction is achieved, but cost increases and comprehensive coverage is not provided
Solution Approach 1:
The patent converts the harmful electromagnetic interference from the battery into a beneficial counteracting magnetic field by using a conductor that generates an opposite-directed magnetic field to cancel the interference, thereby reducing noise without requiring expensive shielding materials
Solution Approach 2:
The patent changes the physical state and position parameters by placing a conductor at specific locations (first and second positions) with specific orientations to optimize the counteracting magnetic field distribution, achieving comprehensive coverage with minimal cost
2Reliability
If sensitivity of speakers is increased to improve sound quality, then audio performance improves, but electromagnetic interference noise increases
Solution Approach 1:
The patent uses the battery's own electromagnetic interference to generate a counteracting magnetic field that cancels the noise, allowing high sensitivity speakers to operate without suffering from increased interference noise
Solution Approach 2:
The patent applies preliminary anti-action by pre-positioning conductors that generate counteracting magnetic fields before the interference reaches the audio component, effectively neutralizing the harmful effects in advance
3Object-affected harmful factors
If comprehensive shielding coverage is implemented to reduce electromagnetic interference, then noise reduction improves, but device complexity increases
Solution Approach 1:
The patent segments the shielding function into discrete conductor elements positioned at specific locations (first and second positions) rather than using a continuous complex shielding structure, achieving comprehensive coverage with simplified geometry
Solution Approach 2:
The conductors serve multiple functions: they generate counteracting magnetic fields to reduce noise, provide structural support, and can be integrated with existing battery components, thereby reducing overall device complexity
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 solution effectively reduces noise by 8 dB, enhances sound production, expands the effective radiation area by over 5 times, and offers a 50% cost benefit while maintaining high sensitivity and accuracy with minimal structural changes.
Implementation Method 1
A counteracting current into the conductor forms a counteracting magnetic field acting on the audio component, and the counteracting magnetic field counteracts an interfering magnetic field acting by the battery on the audio component
Data Source
AI summary
A speaker assembly includes a magnetic field counteracting component arranged on an end face of an audio component facing a battery with positive and negative electrode tabs. When a counteracting current into a conductor forms a counteracting magnetic field acting on the audio component, the counteracting magnetic field counteracts an interfering magnetic field acting by the battery on the audio component. The conductor includes a first end and a second end such that, in a thickness direction of the battery, the first end corresponds to a position of a positive electrode tab and the second end corresponds to a position of a negative electrode tab.