Card Connector Locking Structure for Precise Holder Alignment
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Solution Overview
Problem
Existing connectors for electronic cards in mobile devices often result in unstable connections due to deviation of the cards during insertion, leading to positioning issues and potential elastic fatigue from frequent movements.
Innovation Solution
A card connector design featuring an insulating base with side arms and locking devices, including elastic arms and fixed protrusions, that synchronize and correct the positioning of electronic cards, reducing elastic fatigue by limiting outward movement and using a pushing device with a connecting rod and push rod for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple card holder structure is used, then the device complexity is reduced, but the card positioning stability deteriorates due to deviation during insertion
Solution Approach 1:
The connector is divided into multiple functional components: insulating base, shell, locking devices with elastic arms, side arms with storage slots, and pushing device. Each segment performs a specific function (positioning, locking, pushing), allowing the complex positioning task to be distributed across multiple simple components rather than one complex mechanism.
Solution Approach 2:
The elastic arms are pre-configured in curved shapes with protruding portions that will engage with the card holder's recesses during insertion. The side arms are pre-positioned with storage slots that guide the elastic arms into correct engagement positions, preparing the locking mechanism in advance to automatically correct deviations during the insertion process.
2Ease of operation
If elastic arms are allowed to move freely outward, then the ease of operation is improved for card insertion, but the elastic fatigue increases due to frequent movements
Solution Approach 1:
The elastic arms are designed with controlled mobility - they can move outward to accommodate card insertion but are constrained by the folded end portions connecting to the shell. This dynamic design allows necessary movement for operation while limiting excessive movement that would cause fatigue, creating an optimal balance between ease of use and component durability.
3Manufacturing precision
If locking devices are added to both sides, then the card positioning precision is improved, but the device complexity increases
Solution Approach 1:
The locking devices are positioned asymmetrically at opposite lateral sides of the shell, with each side having its own elastic arm and storage slot configuration. This asymmetric bilateral design allows independent correction of deviations on each side, improving positioning precision while maintaining structural simplicity through repetition of the basic locking unit.
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 stable card positioning, reduces elastic fatigue, and maintains balance to prevent deviation, enhancing the reliability and durability of card connections.
Implementation Method 1
Each locking device comprises an elastic arm extended downward in a curved manner and buckled into one respective storage slot
Data Source
AI summary
A card connector includes an insulating base providing an accommodating space, a terminal set, a pushing device, a first side arm with a storage slot on one side, a second side arm with a fixed protruding portion on the other side, and a shell covering the insulating base and having two locking devices respectively provided with an elastic arm extended downward in a curved manner and buckled into one respective storage slot, and each elastic arm being provided with a protruding portion protruding inward. A preset card holder with preset electronic card installed therein is pushed into the accommodating space, so that the preset electronic card is at the position corresponding to the locking devices and the fixed protruding portion for the elastic arms and the fixed protruding portion to synchronously locate and correct the positions of two sides of the preset card holder to avoid deviation.