Loudspeaker Unit With Vibrating Magnetic Assembly
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Solution Overview
Problem
Conventional dynamic earphones lack dynamic effect in producing low-frequency sounds due to an immobilized magnetic assembly, which restricts the vibration of the voice coil and diaphragm, resulting in inadequate acoustic performance.
Innovation Solution
A loudspeaker unit design featuring a magnetic assembly connected to a housing via an elastic element, allowing the magnetic assembly to vibrate freely, enhancing the dynamic effect by transmitting vibrations through the bone, and incorporating multiple voice coils and auxiliary magnetic assemblies to strengthen the vibration and sound quality without additional elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic assembly is immobilized in the housing, then the structure is simple and stable, but the dynamic effect and sound quality are insufficient
Solution Approach 1:
The magnetic assembly is transformed from a fixed static structure to a dynamic one by connecting it to the housing through an elastic element. This allows the magnetic assembly to vibrate freely in response to voice coil actuation, enhancing the dynamic effect and sound quality while maintaining structural integrity through the elastic connection.
2Stability of the object's composition
If the magnetic assembly is connected rigidly to the housing, then the structure is stable, but the vibration transmission and dynamic effect are reduced
Solution Approach 1:
The elastic element acts as a flexible connection between the magnetic assembly and the housing. This flexible connection allows vibration transmission while maintaining structural stability, enabling the magnetic assembly to vibrate freely and transmit vibrations through bone to enhance the dynamic effect without compromising structural integrity.
3Productivity
If the magnetic assembly is allowed to vibrate freely, then the dynamic effect is enhanced, but excessive vibration may damage the diaphragm
Solution Approach 1:
The elastic element serves as a cushioning element that allows controlled vibration of the magnetic assembly while inherently limiting excessive vibration amplitudes. This prior cushioning mechanism prevents the magnetic assembly from vibrating with excessive amplitude that could damage the diaphragm, thus protecting the system while maintaining enhanced dynamic effect.
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 design significantly enhances the dynamic effect and sound quality by allowing the magnetic assembly to vibrate freely, improving the transmission of sound to the user's eardrum and providing a stronger dynamic experience without damaging the diaphragm, while limiting excessive vibration amplitudes to prevent damage.
Implementation Method 1
The magnetic assembly is connected to the housing by an elastic element. The magnetic assembly vibrates along with the elastic element with respect to the housing when the elastic element vibrates.
Implementation Method 2
The magnetic assembly vibrates along with the elastic element with respect to the housing when the elastic element vibrates.
Implementation Method 3
When an audio electrical signal at a certain frequency passes through the voice coil, the voice coil vibrates at the frequency of the audio electrical signal under the action of the magnetic field force
Data Source
AI summary
A loudspeaker unit includes: a housing (100), a magnetic assembly (300) disposed in the housing (100), a diaphragm (220) disposed on the housing (100), a first voice coil (210a) connected to the diaphragm (220), and the magnetic assembly (300) is connected to the housing (100) by an elastic element (400). The magnetic assembly (300) vibrates along with the elastic element (300) with respect to the housing (100) when the elastic element (400) vibrates.