Speaker Lead Wire Routing for Thin Magnetic Circuit Layouts
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Solution Overview
Problem
In thin or small speaker devices, the limited space for the lead wire of the voice coil leads to potential contact with the magnetic circuit, diaphragm, and edge parts, causing abnormal noise and breakage due to stress, and affects the weight balance, resulting in unwanted vibrations and deteriorated acoustic quality.
Innovation Solution
A speaker device design featuring a magnetic circuit with a passage for the lead wire that prevents contact with other components, maintaining weight balance through symmetrically arranged lead wires and support members, ensuring the lead wire connects to a terminal part without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the lead wire is connected to the terminal part with extra length portions and bent portions to adapt to voice coil displacement, then the stress on the lead wire is reduced, but the lead wire contacts the magnetic circuit, diaphragm and edge parts causing abnormal noise and breakage in thin or small speaker devices
Solution Approach 1:
A support member is introduced as an intermediary component to hold the lead wire at a predetermined position. This support member acts as a mediator between the lead wire and the surrounding components (magnetic circuit, diaphragm, edge parts), preventing direct contact while maintaining the lead wire's structural integrity and reducing stress during voice coil displacement.
2Object-affected harmful factors
If the lead wire configuration is changed to avoid contact in thin or small speaker devices, then abnormal noise and breakage are prevented, but the weight balance of the voice coil is affected causing unwanted vibrations and deteriorated acoustic quality
Solution Approach 1:
The support member is strategically positioned at a predetermined location to provide localized support for the lead wire. This localized intervention prevents contact with surrounding components while minimizing the impact on the overall weight balance of the voice coil assembly, thereby maintaining acoustic quality.
3Volume of moving object
If the speaker device is made thin or small to reduce size, then the space for lead wire routing is limited, but this limitation causes the lead wire to contact other components leading to abnormal noise and breakage
Solution Approach 1:
Instead of routing the lead wire in the limited planar space of thin or small speaker devices, the support member elevates the lead wire to a different spatial dimension (predetermined position away from the plane of other components). This dimensional separation allows the lead wire to connect the voice coil to the terminal part without contacting the magnetic circuit, diaphragm, or edge parts, even in compact designs.
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
Prevents abnormal noise and breakage of the lead wire while maintaining acoustic quality by avoiding contact with other components and ensuring balanced weight distribution, thus producing high-quality thin and small speaker devices.
Implementation Method 1
a voice coil fixed to a diaphragm is arranged to vibrate vibratably in a magnetic gap of a magnetic circuit
Data Source
AI summary
A speaker includes: a vibrating body including a diaphragm and an edge; a coil directly or indirectly attached to the diaphragm; a pair of lead wires electrically connected to the coil; a yoke; a frame which supports the diaphragm via the edge and in which a magnetic circuit is housed; and an inner terminal to which the lead wire is connected. A passage through which the lead wire passes is disposed between the coil and the inner terminal.