Wrist-worn Device Earphone Retention via Sliding Key and Magnets
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Solution Overview
Problem
Existing wrist-worn devices face challenges in reliably storing and conveniently retrieving wireless earphones, as they are prone to accidental falling and difficult to access.
Innovation Solution
A wrist-worn device design featuring an accommodating groove for the earphone, a sliding key with a snap-in head, and magnetic attraction portions to securely store and release the earphone, allowing for easy retrieval by overcoming magnetic forces with external pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the earphone is placed in the accommodating groove without additional fixing structures, then the device complexity is reduced, but the reliability of storage deteriorates as the earphone is prone to accidental falling
Solution Approach 1:
The patent replaces complex mechanical fixing structures with a magnetic field-based retention mechanism. Magnets are embedded in the accommodating groove and on the earphone body to provide automatic retention without additional mechanical fastening components, thereby maintaining simplicity while ensuring reliable storage.
Solution Approach 2:
The magnetic retention system enables the earphone to automatically secure itself in the accommodating groove through magnetic attraction, eliminating the need for manual fastening operations. The earphone self-retains through the magnetic field interaction between the magnets in the groove and those on the earphone body.
2Reliability
If a secure fixing mechanism is added to prevent accidental falling, then the reliability of storage is improved, but the ease of operation deteriorates as the earphone becomes difficult to take out
Solution Approach 1:
The magnetic retention force is designed to be dynamically adjustable based on the sliding position of the earphone. When the earphone is properly positioned, magnetic attraction provides strong retention. When extraction is needed, the magnetic force naturally decreases, allowing easy removal without requiring additional unlocking mechanisms.
Solution Approach 2:
The magnetic field strength and retention characteristics are optimized through careful selection of magnet types, sizes, and positions. The magnetic force parameters are tuned to provide sufficient holding strength during storage while allowing easy extraction when needed, balancing reliability with operational convenience.
3Reliability
If magnetic attraction portions are added to secure the earphone, then the reliability of storage is improved, but the device complexity increases
Solution Approach 1:
The patent substitutes complex mechanical retention mechanisms with simple magnetic attraction portions. Magnets are directly embedded in the accommodating groove and on the earphone body, eliminating the need for additional mechanical fastening components, springs, or latches, thereby maintaining structural simplicity while ensuring reliable storage.
Solution Approach 2:
The patent utilizes composite material integration by embedding magnets within the plastic or metal structures of the accommodating groove and earphone body. This integration ensures that the magnetic retention function is built into the existing structure without adding separate complex components, maintaining overall structural simplicity.
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 design ensures reliable storage and convenient retrieval of the earphone, preventing accidental falling and simplifying the operation of taking it out, while maintaining a secure connection during storage.
Implementation Method 1
the key is provided with a first attraction portion, the device main body or the earphone which has the clamping groove is provided with a second attraction portion, and the first attraction portion is magnetically attracted with the second attraction portion
Implementation Method 2
a magnetic pole of an end of the second magnet is the same as a magnetic pole of an end of the first magnet opposite to the second magnet to generate a repulsive force to push the earphone out of the accommodating groove
Data Source
AI summary
A wrist-worn device is provided, which includes a device main body and an earphone. An accommodating groove for placing the earphone is provided on the device main body, a key is slidably mounted on one of the device main body and fee earphone. A clamping groove is provided on the other one of the device main body and the earphone, and a snapin head cooperating with the clamping groove is provided at a top of the key. The key is provided with a first attraction portion, the device main body or the earphone having the clamping groove is provided with a second attraction portion, and the first attraction portion is magnetically attracted with the second attraction portion in a case that the key slides forward until the snapin head is inserted into the clamping groove.