Magnetic Card Ejection Mechanism in Non-Magnetic Housing
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Solution Overview
Problem
Existing electronic devices with card connectors face challenges in efficiently and securely ejecting SIM or SD cards, often requiring manual operation or complex mechanisms that can be cumbersome and prone to mechanical failures.
Innovation Solution
The electronic device incorporates a non-magnetic housing with a rotating member and tray system, utilizing a torsion spring or elastic element and magnets to rotate the tray or connector out of the housing for easy card ejection, ensuring secure retention and easy access without manual effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual ejection mechanism is used, then the device structure is simple, but the ease of operation is poor and user convenience is reduced
Solution Approach 1:
The patent replaces the traditional manual mechanical ejection mechanism with a magnetic field-based system. Magnets are used to generate magnetic force that automatically ejects the card from the connector, eliminating the need for manual insertion/ejection operations and complex mechanical springs or levers.
Solution Approach 2:
The card ejection system performs the ejection action automatically through magnetic force without requiring user intervention. The magnetic force naturally attracts or repels the card based on magnetic polarity configuration, enabling self-service card ejection that improves ease of operation while keeping the mechanism simple.
2Ease of operation
If a magnetic ejection mechanism is used, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent integrates the magnetic ejection mechanism directly into the connector structure itself. The magnets are embedded within the connector housing, merging the ejection function with the connector's structural components rather than adding separate ejection mechanisms, thereby minimizing the increase in device complexity.
Solution Approach 2:
The connector structure serves multiple functions: it provides electrical connectivity, mechanical support, and magnetic field generation for card ejection. By making the connector multi-functional, the patent avoids adding separate dedicated ejection components, thus improving ease of operation without proportionally increasing device complexity.
3Ease of operation
If magnetic components are added for ejection, then the ease of operation is improved, but the non-magnetic integrity of the housing is compromised
Solution Approach 1:
The patent applies magnetic components only in the specific local area where they are needed for card ejection, rather than making the entire housing magnetic. The non-magnetic housing material is maintained in all areas except for small, localized magnetic elements embedded in the connector, thus preserving overall non-magnetic integrity while enabling magnetic ejection functionality.
Solution Approach 2:
The housing is segmented into magnetic and non-magnetic zones. The connector portion containing the magnetic components is separated from the main non-magnetic housing body, allowing the magnetic ejection function to be isolated to a small segment that does not compromise the overall non-magnetic composition and stability of the housing structure.
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
This solution provides a simple, reliable, and secure mechanism for card ejection, enhancing user convenience and reducing mechanical complexity while maintaining the device's non-magnetic integrity.
Implementation Method 1
utilizing a torsion spring or elastic element
Implementation Method 2
utilizing a torsion spring or elastic element
Implementation Method 3
utilizing a torsion spring or elastic element and magnets to rotate the tray or connector
Data Source
AI summary
An electronic device includes a housing and a connector mounted in the housing. An open portion is defined in the housing. The connector includes a mounting portion coupled to the housing, a rotating member rotatably mounted to the mounting portion and a tray mounted in the open portion. The rotating member includes a magnet arranged to one end of the rotating arm and a resisting portion extending from the other end of the rotating arm. The magnet is adjacent to an inside surface of the housing, and the resisting portion resists against the tray. The magnet rotates the rotating member to partly push the tray out from the open portion. The electronic device has a good sealing ability.