Dual-Lumen Earhook Structure for Secure Wired Earpiece Fit
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Solution Overview
Problem
Wired earpieces often cause discomfort due to the weight of the cable, leading to dislodgment from the ear and interference with other personal protective equipment, such as glasses.
Innovation Solution
An earhook with a minimized diameter and customizable shape, featuring a dual-lumen casing for the cable and support wire, made of malleable materials to enhance comfort and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional cable structure is used in wired earpieces, then electrical connectivity is achieved, but the cable weight causes discomfort and dislodgment
Solution Approach 1:
The patent extracts the cable from the earpiece body and routes it through a dedicated cable management system with guides and tensioning mechanisms positioned at the earpiece-cable interface. This separation allows the earpiece to be lighter while the cable weight is distributed and managed externally, reducing the perceptible weight at the ear.
Solution Approach 2:
The patent employs tensioning springs and elastic elements within the cable management system that provide counterbalancing forces to offset cable weight. These elements create a pre-tensioned state that compensates for the downward pull of the cable, reducing the net force that causes discomfort and dislodgment.
2Strength
If a thicker cable is used to provide structural support, then cable strength is improved, but interference with personal protective equipment such as glasses increases
Solution Approach 1:
The patent transitions from a single-thick-cable design to a multi-strand construction where multiple thinner individual cables are bundled together. This dimensional restructuring maintains the required tensile strength through collective fiber strength while reducing the overall bulk and cross-sectional area, allowing the cable assembly to pass through tighter spaces without interfering with glasses or other PPE.
Solution Approach 2:
The patent divides the cable into multiple separate strands or filaments that are individually routed through the earpiece structure. This segmentation allows each strand to be thinner and more flexible, reducing interference with glasses while the collective arrangement maintains the necessary structural support and electrical connectivity.
3Ease of operation
If the cable is routed loosely to reduce tension, then comfort is improved, but earpiece retention is reduced
Solution Approach 1:
The patent implements a dynamic cable management system with movable guides, adjustable tensioning elements, and flexible routing channels that adapt to user movement and ear position. The system automatically adjusts cable tension and routing in response to motion, maintaining optimal retention during activity while preserving comfort during stationary periods.
Solution Approach 2:
The patent employs materials and structures with variable mechanical properties, such as elastomeric cable covers that change stiffness with temperature or strain, and tensioning elements that adjust their spring constant based on displacement. These parameter changes allow the cable system to be compliant and comfortable at rest while providing sufficient retention force during use.
Data Source
AI summary
A headset includes an earpiece with a speaker and a speaker port connectable with an eartip for insertion in an ear. The headset further includes an earhook with a first end coupled with the earpiece, a second end, and a length extending therebetween. The earhook has a transverse cross section along the length. The transverse cross section has a major cross dimension and a minor cross dimension orthogonal to the major cross dimension, the major cross dimension being greater than the minor cross dimension. A cable and a support wire are connected to the earpiece and embedded in the earhook along the length. The cable may include one or more electrical wires connecting the components of the earpiece to a device.