Universal Card Holder for Nano SIM and Memory Data Expansion
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Solution Overview
Problem
Current mobile terminals, particularly those miniaturized for nano SIM cards, face challenges in implementing data expansion functions due to the absence of a compatible card slot for micro SD cards when accommodating nano SIM cards.
Innovation Solution
A card holder with a nano SIM card-compatible card slot that also accommodates memory cards of similar shape, utilizing electrical connectors matching the nano SIM card's contact points for data expansion and transmission, allowing for flexible use of either nano SIM or memory cards in the same slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a card holder is designed to accommodate a nano SIM card, then the mobile terminal can be miniaturized and save inner space, but the data expansion function cannot be implemented by inserting a micro SD card
Solution Approach 1:
The card holder is designed with a universal card slot that can accommodate both nano SIM cards and memory cards with the same appearance as nano SIM cards. The electrical connectors are configured to electrically connect to both types of cards, enabling the single card slot to perform multiple functions: user identification when a nano SIM card is inserted, and data expansion when a memory card is inserted. This multi-functionality resolves the contradiction by allowing the mobile terminal to maintain miniaturization while still providing data expansion capability through the same physical slot.
2Device complexity
If a single card slot is used for both nano SIM card and memory card, then the card holder structure is simplified, but the electrical connector configuration becomes complex to support both card types
Solution Approach 1:
The electrical connectors are designed with universal compatibility to establish electrical connections with both nano SIM cards and memory cards. The connector configuration supports multiple connection modes: connecting to electrical contact points in the nano SIM card for communication functions, and connecting to contact points in the memory card for data expansion. This universal electrical connection design enables the simplified single-slot structure to accommodate both card types with full functionality.
Solution Approach 2:
The card holder employs an elastic clamping member that can dynamically adjust its clamping force and position to securely hold different card types. The elastic component allows the card holder to adapt to the slight dimensional variations between nano SIM cards and memory cards, ensuring reliable electrical contact and mechanical retention for both card types without requiring separate dedicated slots or complex adjustment mechanisms.
Data Source
AI summary
A card holder for use inside an electronic device is provided. The card holder includes a holder body and a plurality of electrical connectors. The holder body is disposed with a card slot matching a nano SIM card. The card slot is configured to accommodate the nano SIM card or a memory card having a same appearance or shape as the nano SIM card. At least some of the plurality of electrical connectors are first electrical connectors whose positions match the positions of electrical contact points in the nano SIM card. The first electrical connector is configured to electrically connect to the nano SIM card or the memory card accommodated in the card slot. The plurality of electrical connectors are configured to electrically connect to the memory card.