Audio Cable Connector Reducing Skin Effect via 3D Wire Spacing
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Solution Overview
Problem
Audio cables experience distortion and skin effect issues due to the concentration of electricity at the surface of wires, leading to reduced power handling capacity and fidelity in signal transmission, especially in high-fidelity audio systems.
Innovation Solution
A connector design with a conductive body featuring a circular outer periphery and converging sections to securely attach multiple wires, using an insulating layer and a crimpable band to ensure equal spacing and secure contact, minimizing skin effect and distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple wires are positioned close together to increase cable flexibility, then cable flexibility is improved, but skin effect increases causing energy concentration at wire surfaces and reduced power handling capacity
Solution Approach 1:
The patent positions wires in a three-dimensional circular arrangement around a central axis, with each wire spaced equidistantly from the axis and from adjacent wires. This spatial distribution in multiple dimensions prevents wire proximity effects while maintaining cable flexibility, as the wires are arranged in a balanced geometric pattern rather than being simply close together in a linear fashion.
Solution Approach 2:
The connector body features an asymmetric converging section that tapers from a larger diameter at the wire reception area to a smaller diameter at the equipment connection area. This asymmetric geometry allows the connector to accommodate multiple wires in a balanced circular pattern at the wide end while providing a secure fit at the narrow end, enabling both wire separation and secure connection.
2Reliability
If wires are secured tightly to the connector to ensure good electrical contact, then electrical interface quality is improved, but wire spacing uniformity becomes difficult to maintain
Solution Approach 1:
The connector body includes a circular cavity with equidistant wire reception positions that are pre-formed during connector manufacturing. Wires are inserted into these pre-defined positions before the crimping operation, ensuring uniform spacing is established beforehand. The subsequent crimping action then secures the wires in these pre-positioned locations, maintaining both spacing uniformity and electrical contact quality.
Solution Approach 2:
The pliable band acts as an intermediary element between the wires and the connector body. When crimped, the band applies uniform compressive force to all wires simultaneously, securing them to the connector while maintaining their equidistant spacing. The band's flexibility allows it to conform to the circular arrangement of wires, providing uniform pressure without distorting wire positions.
3Manufacturing precision
If a rigid connector structure is used to maintain wire positioning, then wire spacing uniformity is improved, but the connector becomes difficult to manufacture and assemble
Solution Approach 1:
The connector body is designed with a converging section that changes diameter along its length, transitioning from a larger diameter at the wire reception area to a smaller diameter at the equipment connection area. This parameter change in geometry allows the connector to accommodate multiple wires in a balanced circular pattern at the wide end while providing a secure fit at the narrow end, simplifying both manufacturing and assembly.
Solution Approach 2:
The pliable band is made from a flexible material that can be crimped to secure wires. This flexible element provides the necessary constraint to maintain wire spacing uniformity without requiring a complex rigid structure. The band's flexibility simplifies manufacturing and assembly while still achieving the precision of wire positioning.
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 enhances sound quality by maintaining equal energy distribution across the wire surface, reducing distortion and skin effect, thereby improving signal fidelity and clarity in audio transmission.
Implementation Method 1
The band is formed from a pliable material which is capable of being reduced in circumference, such as by being squeezed or crimped, to provide a positive electrical interface between the exposed terminal surface of each of the wires and the outer periphery of the first portion
Implementation Method 2
The connector includes a connector body formed from an electrically conductive material
Data Source
AI summary
A connector for an audio cable, a combination connector and cable, and a method of securing the connector to the cable are disclosed. The connector includes a connector body formed from an electrically conductive material and having a first end sized to abut an end of an audio speaker cable, a second end shaped to be securely attached to a connecting post formed on a piece of audio equipment, and an exterior surface located therebetween. The exterior surface has a first portion, a second portion and a third portion. The first portion is sized to receive the exposed terminal surface of each of a plurality of wires present in the cable. An insulating layer extends over the exposed terminal surface of each of said wires and a band surrounds the insulating layer to provide a positive electrical interface between the exposed terminal surfaces and the first portion.