Neck Band Sound Output Device Cable Length Adjustment
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Solution Overview
Problem
Conventional sound output devices with cable winding mechanisms increase in size and weight, compromising usability and limiting functionality, such as noise canceling capabilities, when a cable winding mechanism is integrated into the neck band.
Innovation Solution
A sound output device design featuring a neck band with an insertion hole system that allows the cable to be drawn out and rearranged on both sides, with stoppers to restrict movement, enabling adjustable cable lengths and improved usability while maintaining functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cable winding mechanism is provided inside the neck band, then the cable length can be adjusted, but the sound output device is increased in size and weight
Solution Approach 1:
The patent removes the cable winding mechanism from the neck band, extracting the source of the size and weight problem. Instead, the cable length is adjusted by a simple insertion hole mechanism that allows the cable to be drawn out and repositioned without requiring a complex winding system.
Solution Approach 2:
The cable is divided into adjustable segments through the insertion hole mechanism, allowing the cable length to be changed by repositioning the cable relative to the neck band. This segmentation approach enables length adjustment without needing a unified winding mechanism.
2Adaptability or versatility
If a cable winding mechanism is provided inside the neck band, then the cable length can be adjusted, but the sound output device is increased in size
Solution Approach 1:
The cable winding mechanism is extracted from the neck band design. The patent replaces it with a minimalistic insertion hole system that achieves cable length adjustment through simple cable repositioning, thereby eliminating the need for additional mechanical components that would increase volume.
Solution Approach 2:
Instead of winding the cable into a compact form, the patent inverts the approach by allowing the cable to be drawn out and repositioned freely. The cable management is achieved through the insertion hole mechanism rather than through winding, fundamentally inverting the traditional cable storage approach.
3Volume of moving object
If the wire diameter of the cable is reduced to avoid increase in size, then the cable is thinner, but the number of cores of the cable is limited
Solution Approach 1:
The cable is segmented into multiple functional cores (audio signal cores, noise canceling cores, grounding cores) that can be arranged in a compact configuration. This segmentation allows the cable to maintain multiple functions even with a reduced overall diameter by optimizing the internal arrangement of individual cores.
Data Source
AI summary
It is intended to improve usability while securing functionality of a sound output device. There are provided: a neck band to be worn on a user's neck and having an insertion hole; a cable partially led out from the neck band; and an earphone connected to the cable. The cable can be drawn out from the neck band to both sides of the insertion hole, and a length of a portion on both sides of the insertion hole in the cable is changed by changing a position of an inserted portion of the cable in the insertion hole. Since a length of each portion of the cable positioned on both sides of the insertion hole is changed by changing a position of the inserted portion of the cable, it is possible to improve usability while securing functionality of the sound output device.