SIM Card Latching Assembly with Elastic Wedge and Blocking Tab
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Solution Overview
Problem
Conventional SIM card latching assemblies in portable electronic devices are unreliable, as they can easily dislodge upon impact, leading to poor connection or ejection of the SIM card.
Innovation Solution
A latching assembly featuring a receiving portion with a blocking tab and an elastic latch, which securely holds the SIM card in place by using the elastic latch's wedge surface to resist the card's insertion and the blocking tabs to prevent upward movement, ensuring steady retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional latching structure is used to hold the SIM card, then the assembly is simple in structure, but the SIM card can easily dislodge upon impact, leading to poor connection or ejection
Solution Approach 1:
The latching assembly is divided into distinct functional components: a receiving portion for holding the SIM card, a blocking tab that extends to prevent upward movement, and an elastic latch with a wedge surface for securing the card. This segmentation allows each component to perform its specific function effectively, improving reliability without excessive complexity
Solution Approach 2:
The elastic latch is designed to be deformable, allowing it to dynamically adjust during SIM card insertion and provide resilient holding force. The blocking tab can also move relative to the receiving portion, enabling the assembly to adapt to impact forces while maintaining secure card retention
2Ease of operation
If the latching structure is made movable for easy card insertion, then the ease of operation is improved, but the structure becomes unreliable under shock conditions
Solution Approach 1:
The elastic latch is designed to be deformable, allowing it to dynamically adjust during SIM card insertion and provide resilient holding force. The blocking tab can also move relative to the receiving portion, enabling the assembly to adapt to impact forces while maintaining secure card retention
Solution Approach 2:
The blocking tab is pre-positioned to extend from the receiving portion and partially cover the SIM card, creating a preliminary barrier against upward movement. This pre-configured protective structure ensures that even under shock conditions, the SIM card cannot easily dislodge
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 assembly effectively secures the SIM card within the portable device, maintaining a stable connection even under shock conditions, preventing accidental ejection and ensuring reliable operation.
Implementation Method 1
The elastic latch is disposed at the first end of the receiving portion... the elastic latch's wedge surface to resist the card's insertion
Data Source
AI summary
A surface contact card latching assembly (100) is formed in a portable electronic device. The latching assembly includes a receiving portion (11) and a latch module (12). The receiving portion is configured for receiving the surface contact card, and a first end of the receiving portion forms an entrance (112) via which the surface contact card can enter or exit. The latch module includes a blocking tab (120) and an elastic latch (122). The blocking tab extends from the receiving portion for partially covering the receiving portion. The elastic latch is disposed at the first end of the receiving portion.