Dual-Vibration Speaker Magnetic Layout for Low-Loss Coil Routing
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Solution Overview
Problem
The introduction of a through-hole in the magnetic circuit system of dual vibration system speakers reduces structural integrity and magnetic potential, leading to weakened driving force and decreased acoustic performance.
Innovation Solution
A speaker device design with a first and second vibration system, where the conductive member passes through strategically placed through-holes in the magnetic circuit system to connect with the second voice coil, maintaining the integrity of the magnetic circuit and reducing magnetic loss, while allowing for efficient power supply and amplitude adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a through-hole is introduced in the magnetic circuit system to connect the conductive member to the second voice coil, then the electrical connection is achieved, but the structural integrity and magnetic potential are reduced
Solution Approach 1:
The patent changes the dimensional approach by providing through-holes in opposite directions (first and second through-holes in opposite sides of the magnetic steel) rather than a single central through-hole. This allows the conductive member to pass through in a distributed manner, maintaining structural integrity while achieving electrical connection.
Solution Approach 2:
The patent segments the single through-hole into multiple smaller through-holes (first and second through-holes) positioned in opposite directions. This segmentation reduces the impact on structural integrity and magnetic potential while still allowing the conductive member to pass through and connect the voice coil to the external circuit.
2Ease of manufacture
If a through-hole is introduced in the magnetic circuit system, then the conductive member can be inserted to supply power, but the magnetic potential and driving force are weakened
Solution Approach 1:
The patent positions through-holes in opposite directions on the magnetic steel rather than creating a large central hole. This dimensional redistribution minimizes the disruption to magnetic flux paths while still allowing conductive member insertion for power supply.
Solution Approach 2:
The patent applies local quality by positioning through-holes in specific locations (opposite sides of the magnetic steel) where they cause minimal interference with the overall magnetic field distribution. This localized approach maintains magnetic potential while enabling conductive member insertion.
3Ease of operation
If the magnetic steel and pole core are spaced apart to form magnetic gap, then the voice coil can be positioned, but the overall magnetic potential decreases
Solution Approach 1:
The patent segments the magnetic circuit into distinct components (magnetic steel, pole core, voice coil) with controlled spacing. This segmentation allows the voice coil to be positioned in the magnetic gap while minimizing the impact on overall magnetic potential through optimized gap dimensions.
Solution Approach 2:
The patent optimizes the parameters of the magnetic gap (spacing between magnetic steel and pole core) to achieve the right balance between voice coil positioning and magnetic potential. By carefully controlling gap dimensions, the system maintains sufficient magnetic field strength while allowing proper voice coil placement.
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 enhances magnetic potential and acoustic performance by retaining the volume of the magnetic steel and reducing magnetic loss, resulting in improved sound production and reliability.
Implementation Method 1
a first voice coil inserted and suspended in the first magnetic gap... a second voice coil inserted and suspended in the second magnetic gap
Implementation Method 2
a conductive member extended from a bottom of the magnetic circuit system through the magnetic circuit system toward a bottom of the second diaphragm, and electrically connected to the second voice coil
Data Source
AI summary
Provided is a speaker device, including a first frame, a first vibration system, a magnetic circuit system, a second frame, a second vibration system, a second voice coil, and a conductive member. The magnetic circuit system includes a lower splint, a first main magnetic steel, a first sub-magnet steel, a first pole core, a second sub-magnetic steel, and an upper splint. The conductive member includes an external conductive disk, two extension wall, and two connecting walls formed by bending and extending the two extension walls and spaced apart from each other. The connecting walls are used to act as welding pads, and a positive terminal and a negative terminal of the second voice coil are electrically connected to the two connecting walls, respectively. Compared with the related art, the acoustic performance of the speaker device of the present application is superior.