Card Holder With Elastic Piece Preventing Accidental Ejection
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Solution Overview
Problem
Traditional card holders often lead to card loss due to cards shaking and sliding out of the accommodating cavity, especially when the lid is opened inadvertently or forgotten.
Innovation Solution
A card holder design featuring a silicone elastic piece that presses and locks the card in place, combined with a pushing device and flexible protective sleeve to securely hold and retrieve cards, preventing accidental ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional card holder with accommodating cavity and lid is used, then cards can be stored, but cards are prone to shaking and sliding out when the lid is open or forgotten
Solution Approach 1:
The elastic piece is pre-installed in the accommodating cavity to automatically press against the card upon insertion. This preliminary positioning action ensures the card is immediately secured without requiring the user to manually adjust or close a lid, preventing shaking and sliding out while maintaining easy access
Solution Approach 2:
The elastic piece automatically adjusts its pressing force based on the card's presence and position. When a card is inserted, the elastic piece self-adjusts to press against it; when removed, it returns to its original state. This self-regulating mechanism ensures reliable card retention without requiring external control or complex operations
2Reliability
If the accommodating opening is covered with a lid to prevent card loss, then card security improves, but the structure becomes more complex and the lid may open inadvertently
Solution Approach 1:
The lid component is completely removed from the design. Instead of using a separate covering structure, the elastic piece integrated into the cavity wall provides the security function directly. This extraction simplifies the structure to just the shell and elastic piece while maintaining or improving card security through continuous elastic pressure
Solution Approach 2:
The security function previously separated into a lid is merged with the accommodating cavity structure itself. The elastic piece is integrated into the cavity wall, combining the containment structure and the securing mechanism into a single unified component, eliminating the need for a separate lid while providing continuous card retention
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
Effectively prevents card loss by maintaining the card in place with an elastic force, allowing easy retrieval by applying a greater force, and facilitating comfortable handling with a magnetic closure.
Implementation Method 1
an elastic piece, the elastic piece being arranged in the first accommodating cavity, and the elastic piece being used for pressing and locking the card in the first accommodating cavity
Data Source
AI summary
The present disclosure discloses a card holder, which includes a shell and an elastic piece. The shell having a first accommodating cavity and a first accommodating opening, the first accommodating opening being communicated with the first accommodating cavity, and first accommodating cavity being used for accommodating a card. The elastic piece being arranged in the first accommodating cavity, and the elastic piece being used for pressing and locking the card in the first accommodating cavity. Through the structure, when the card is placed in the first accommodating cavity through the first accommodating opening. The elastic piece arranged in the first accommodating cavity is pressed by both sides of the card. An elastic reset force generated when the elastic piece is pressed tightly presses the card in the first accommodating cavity, which can effectively prevent the card from sliding out of the first accommodating cavity through the first accommodating opening.