Card Insertion Structure with Plastic Spring Strip for Wireless Signal Protection
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Solution Overview
Problem
Existing portable electronic devices lack a sufficient lock structure for securely inserting electronic cards without interfering with their wireless transmission functions, particularly due to the proximity of antenna modules which can be affected by card reading modules.
Innovation Solution
A card insertion structure featuring a base, a movably disposed pressing member, and a plastic spring strip that deforms and then locks the electronic card in place, using polyetheretherketone (PEEK) or polyoxymethylene materials to maintain elasticity and prevent signal shielding, allowing secure card retention without affecting wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock structure is added to secure the electronic card, then card retention reliability is improved, but device complexity increases
Solution Approach 1:
The patent uses a flexible plastic spring strip instead of rigid mechanical locking components. The spring strip is a thin, elastic component that can deform to accommodate the card insertion and then restore to provide locking force, eliminating the need for complex rigid lock mechanisms while achieving reliable card retention.
Solution Approach 2:
The patent replaces traditional mechanical locking systems (screws, clips, or complex spring mechanisms) with a simple elastic plastic spring strip that uses material elasticity rather than mechanical interlocking. This substitution dramatically simplifies the structure while maintaining reliable card retention.
2Volume of moving object
If the antenna module is placed adjacent to the card reading module for compact design, then device compactness is improved, but wireless transmission performance deteriorates due to signal interference
Solution Approach 1:
The patent introduces the plastic spring strip as an intermediary component between the antenna module and the card reading module. This spring strip acts as a physical barrier and electromagnetic shield that prevents direct interference between the two modules while allowing them to remain in close proximity for compact device design.
Solution Approach 2:
The patent converts the potential harmful effect of close proximity (signal interference) into a benefit by using the plastic spring strip's electromagnetic shielding properties. The same physical closeness that causes interference is transformed into an opportunity to demonstrate effective shielding, allowing compact design without sacrificing wireless performance.
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 provides a stable and secure electronic card insertion mechanism that prevents detachment during device movement while maintaining wireless transmission functionality by using resilient plastic spring strips to lock the card without interfering with the antenna module's signal.
Implementation Method 1
the pressing member is released and restored due to resilience of the plastic spring strip
Data Source
AI summary
A card insertion structure suited for a portable electronic device is provided. The portable electronic device includes a housing. The card insertion structure includes a base disposed in the housing, a pressing member movably disposed on the base, and a plastic spring strip disposed on the base. A portion of the pressing member is exposed out of the housing. The plastic spring strip leans against the pressing member and the base. A force supplied via an insertion of an electronic card drives the pressing member to deform the plastic spring strip, and after the electronic card passing by the pressing member and being inserted into the card insertion structure between the base and the housing, the pressing member is released and is restored by resilience of the plastic spring strip, and the electronic card is fixed with the housing by the pressing member.