Headphone Cable Retraction Mechanism for Earpiece Adjustment
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Solution Overview
Problem
Conventional Bluetooth headphones have limited communication range due to a single antenna design, while WiFi-enabled headphones face significant challenges with electromagnetic wave attenuation by the human head, leading to unstable connections at expected ranges. Additionally, the cable assembly in adjustable headphones can become damaged or tangled during use.
Innovation Solution
Implementing multiple antennas in both earpieces with a robust cable assembly that includes elastomeric materials and retraction mechanisms to manage cable extension and retraction, ensuring stable wireless communication and user comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna design is used in Bluetooth headphones, then the device complexity is reduced, but the communication range is limited
Solution Approach 1:
The patent divides the antenna system into multiple separate antennas (first antenna and second antenna) positioned in different locations within the headphone structure. This segmentation allows each antenna to handle specific communication functions or provide spatial diversity, thereby extending the effective communication range while maintaining manageable complexity through modular design
Solution Approach 2:
The patent introduces spatial dimensionality by positioning antennas at different locations and orientations within the headphone structure. This three-dimensional arrangement of antennas creates multiple signal paths and improves signal reception across different spatial dimensions, effectively extending communication range beyond what a single planar antenna could achieve
2Adaptability or versatility
If WiFi antennas are placed in headphones, then wireless communication capability is improved, but electromagnetic waves are attenuated by the human head, leading to unstable connections
Solution Approach 1:
The patent segments the WiFi communication function across multiple antennas positioned at different locations in the headphone structure. This spatial distribution of antenna elements creates multiple signal paths that can bypass the attenuation caused by the human head, improving connection stability through signal diversity and selection
Solution Approach 2:
The patent introduces a cable assembly as an intermediary element that connects the antenna system to the control electronics. The cable assembly includes elastomeric materials and retraction mechanisms that protect the electrical connections while allowing movement, thereby maintaining reliable signal transmission between the antennas and the control circuitry despite the presence of the human head
3Adaptability or versatility
If the cable assembly is made longer to accommodate earpiece adjustment, then the adaptability is improved, but the cable becomes prone to damage and tangling
Solution Approach 1:
The patent employs elastomeric materials in the cable assembly construction, which provide flexibility and elasticity. These elastomeric components allow the cable to bend and retract smoothly without cracking or damaging, while the flexible nature enables the cable to accommodate earpiece adjustment movements without tangling
Solution Approach 2:
The patent incorporates a retraction mechanism that enables the cable assembly to dynamically adjust its length and position. The cable can extend when earpieces are moved away from the headbow and automatically retract when returned to the starting position, providing adaptability while minimizing cable stress and preventing damage through controlled movement
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
Enhances wireless performance and maintains signal integrity across various head sizes and user adjustments, reducing cable damage and tangling.
Implementation Method 1
the cable assembly is at least partially formed from an elastomeric material, and the cable assembly is positioned within the inner cavity of the headbow in a resting position such that the cable assembly is extendable within the inner cavity of the headbow from the resting position when one or both of the first and second earpieces are extended from the headbow
Data Source
AI summary
A headphone device including (i) a first and second earpiece, (ii) a headbow adjustably connecting the first and second earpiece, wherein the first and/or the second earpiece is extendable from the headbow, and wherein the headbow includes (a) an inner cavity and (b) a fastener positioned within the inner cavity at a midpoint of the headbow, and (iii) a cable assembly including a cable formed into a sinusoidal pattern when the cable assembly is in a resting position, the cable assembly extending between the first and second earpieces and positioned within the inner cavity in the resting position such that the cable assembly is extendable within the inner cavity from the resting position when the first and/or second earpieces are extended from the headbow, and wherein a midpoint of the cable assembly is fixed, within the inner cavity, at the midpoint of the headbow via the fastener.