Adjustable Neck-Worn Electronic Device Frame Mechanism
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Solution Overview
Problem
Existing neck-worn electronic devices face challenges in accommodating varying neck sizes, leading to discomfort and potential detachment during physical activities, as they lack adjustable features to securely fit different users.
Innovation Solution
The electronic device incorporates a frame control unit with a gear module and elastic members to adjust the angle and length of the frames, allowing for customizable fitting by controlling the angle between the frames using a motor and hall sensors, ensuring secure attachment and comfortable wear across different neck sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the band structure is fixed to accommodate smaller neck sizes, then smaller users can wear it comfortably, but larger users cannot secure it properly on their necks
Solution Approach 1:
The band structure is made dynamic and adjustable through a ratchet mechanism that allows the angle between frame parts to be changed. This enables the same band to adapt to different neck circumferences by adjusting the expansion angle, resolving the contradiction between fixed structure and adaptability to varying neck sizes.
Solution Approach 2:
The band's geometric parameters (angle between frame parts, effective circumference) are made changeable through the ratchet mechanism. By adjusting these parameters, the band can accommodate different neck sizes without requiring multiple sizes or complex modular components.
2Adaptability or versatility
If the band is made expandable to fit larger necks, then larger users can wear it, but smaller users may find it loose and uncomfortable
Solution Approach 1:
The ratchet mechanism provides dynamic adjustability while maintaining security through one-way locking. The band can be expanded to fit different neck sizes, and once adjusted, the ratchet locks the position to prevent unintended loosening, ensuring reliable attachment across various sizes.
Solution Approach 2:
The band is divided into adjustable segments or adjustable-angle frame parts that can be reconfigured through the ratchet mechanism. This segmentation allows precise adjustment to match different neck circumferences while maintaining secure attachment through the locking mechanism.
3Device complexity
If the angle between frames is fixed, then the structure is simple, but it causes asymmetric distortion when worn on different neck sizes
Solution Approach 1:
The angle between frame parts is made dynamically adjustable through the ratchet mechanism, allowing the band to maintain symmetric shape adaptation to different neck sizes. This resolves the contradiction by enabling shape adjustment without requiring complex multi-component systems.
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 enables convenient and stable attachment to the neck, preventing asymmetric distortion and ensuring the device remains securely in place during use, accommodating various neck sizes and user preferences.
Implementation Method 1
a first elastic member applying a force to the first frame in an outward direction of the middle housing
Implementation Method 2
a first rack gear extended from one end of the first frame and provided with a plurality of sawteeth, a second rack gear extended from one end of the second frame and provided with a plurality of sawteeth, and a gear module for controlling the first rack gear and the second rack gear to move the second rack gear symmetrically with the first rack gear when the first rack gear moves
Data Source
AI summary
An electronic device comprises a middle housing; a frame including a first frame and a second frame, each of which have one end respectively coupled to both the left and right sides of the middle housing; a body housing coupled to the frame such that electronic parts are loaded therein; and a frame adjusting part for adjusting an angle between the first frame and the second frame or an arrangement thereof. The electronic device includes the frame adjusting part capable of changing the angle of a band hung around the neck of changing the angle of a band hung around the neck of a user, and thus is conveniently removed and can be stably fixed when worn.