Integrated Conductive Member for Loudspeaker Miniaturization
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Solution Overview
Problem
Traditional sound-producing devices, such as loudspeakers, face challenges with increased height due to corrugated dampers and require additional lead coils for electrical connections, which occupy internal space and cause radial offset and rocking vibrations.
Innovation Solution
A sound-producing device with a conductive member integrated at the root region of the voice coil, featuring a first connecting part fixed to the voice coil, a second connecting part fixed to the housing, and an elastic part between them, allowing for electrical connection without a lead coil and reducing radial offset and rocking vibrations, while saving space and height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a traditional corrugated damper is fixed on the bobbin of the voice coil, then the vibration system can reciprocate in the axial direction, but the height of the sound-producing device increases
Solution Approach 1:
The patent combines the damper and lead coil into a single integrated conductive member. The conductive member serves dual functions: providing mechanical support for axial reciprocation (damper function) and providing electrical connection (lead coil function). This merging eliminates the need for a separate lead coil and reduces the overall device height while maintaining vibration stability.
Solution Approach 2:
The conductive member is designed to perform multiple functions simultaneously: it acts as a damper providing elastic support for axial vibration, as an electrical conductor connecting the voice coil to external circuits, and as a structural element providing mechanical strength. This multi-functionality reduces the number of components and minimizes device height.
2Reliability
If an additional lead coil is used to realize electrical connection between the voice coil and external circuit, then electrical connection is achieved, but internal space is occupied and device complexity increases
Solution Approach 1:
The patent merges the electrical connection function into the conductive member that already serves as the damper. The conductive member includes a first connecting part fixed to the voice coil and a second connecting part extending to the housing for external circuit connection, eliminating the need for a separate lead coil and reducing device complexity.
Solution Approach 2:
The conductive member is designed as a universal component that simultaneously provides mechanical support (damper function) and electrical connection (lead coil function). This multi-functionality reduces the total number of components while ensuring reliable electrical connection between the voice coil and external circuits.
3Reliability
If a traditional lead coil is routed inside the sound-producing device, then electrical connection is established, but radial offset and rocking vibrations occur
Solution Approach 1:
The patent combines the electrical connection function with the conductive member that is already positioned at the root region of the voice coil body. This integration eliminates the need for separate lead coil routing that would cause radial offset and rocking vibrations, while maintaining reliable electrical connection.
Solution Approach 2:
The patent extracts the electrical connection function from the traditional lead coil and integrates it into the conductive member. This extraction eliminates the harmful effects of lead coil routing (radial offset and rocking vibrations) while preserving the essential electrical connection function through the conductive member's second connecting part.
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 enables miniaturization of the sound-producing device, reduces radial offset and rocking vibrations, and maintains axial compliance, achieving better acoustic performance and lower harmonic distortion.
Implementation Method 1
a conductive member, the conductive member having a first connecting part fixed to the voice coil, a second connecting part fixed to the housing, and an elastic part located between the first connecting part and the second connecting part
Data Source
AI summary
Disclosed is a sound-producing device, comprising: a housing having an accommodating room where a magnetic circuit system is installed; a voice coil including a bobbin and a voice coil body; a conductive member having a first connecting part fixed to the voice coil, a second connecting part fixed to the housing, and an elastic part located between the two connecting parts; the conductive member is combined on the voice coil body, the magnetic circuit system is provided with an avoidance part corresponding to the conductive member; the voice coil is provided with an inner conduction structure, the housing is provided with an outer conduction structure that is in electrical conduction with an external circuit; and upon being electrically connected with the inner conduction structure, the first connecting part passes through the avoidance part and extends to the housing, and is electrically connected with the outer conduction structure.