SIM Card Connector with Backup Portion for Ejection Force Management
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Solution Overview
Problem
Existing connectors for SIM cards face challenges in reducing size while maintaining strength and simplicity in their eject mechanisms, with issues related to excessive pressing force and positional adjustments during production.
Innovation Solution
A connector design featuring a pivotable ejection member with a backup portion that limits excessive force and supports the receiver, allowing for easy reduction in the eject mechanism's complexity and size, while ensuring the connector can withstand operational forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the eject mechanism is provided in the connector itself (as in JP-A 2008-108695), then the connector can eject the card directly, but the connector size becomes difficult to reduce
Solution Approach 1:
The patent introduces a tray as an intermediary object between the connector and the card. The connector ejects the tray instead of directly ejecting the card, allowing the ejection mechanism to be smaller while still achieving card ejection functionality. The tray acts as a mediator that transfers the ejection force from the connector to the card.
2Volume of moving object
If the eject mechanism is provided in the electronic equipment (as in US2009/267677 A), then the connector size can be reduced, but various problems are caused in production such as positional adjustment
Solution Approach 1:
By using the tray as an intermediary, the ejection mechanism can be integrated into the connector while maintaining a compact size. This resolves the production issues associated with external ejection mechanisms while preserving the benefits of reduced connector size.
3Strength
If the connector is designed to withstand excessive pressing force from the pin, then the connector strength is sufficient, but the connector structure becomes more complex
Solution Approach 1:
The patent extracts the excessive force absorption function from the main connector body by introducing a dedicated backup portion. This separate structure is specifically designed to withstand excessive pressing force from the pin, allowing the main connector structure to remain simple while still providing adequate strength protection.
Solution Approach 2:
The connector structure is segmented into functional portions: the main body for ejection operations and a separate backup portion for force absorption. This segmentation allows each part to be optimized for its specific function, reducing overall structural complexity while maintaining necessary strength.
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 proposed connector achieves a balance between strength and simplicity, effectively managing excessive pressing forces and facilitating easier production by incorporating a backup portion that prevents deformation and supports the ejection mechanism, enhancing its reliability and ease of assembly.
Implementation Method 1
The ejection member is designed to pivot from the accommodating position to the eject position when the front surface is pressed along the pressing direction
Implementation Method 2
The backup portion is brought into abutment with the rear surface of the receiver when the front surface of the receiver receives a force which is so excessive as to force the ejection member to pivot beyond the eject position
Data Source
AI summary
A connector is able to accommodate an object (for example, a tray on which a card is mounted). The connector comprises an ejection member and a backup portion. The ejection member includes a receiver and an ejecting portion. The receiver is able to be pressed by an operating member (for example, a pin). The ejection member pivots from an accommodating position to an eject position when the receiver is pressed. The ejecting portion ejects the object when the ejection member pivots toward the eject position. When the receiver receives an excessive force from the operating member, the backup portion is brought into abutment with the receiver so as to backup the receiver.