Smart Card Anti-Deformation Limiting Rib
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Solution Overview
Problem
Smart cards in electronic products are prone to deformation due to overheating, caused by insufficient limitations and differing coefficients of heat expansion between materials, leading to warping and recessing issues.
Innovation Solution
Incorporating an anti-deformation part, such as a limiting rib or elastic limiting pad, on the housing or tray to prevent upward deformation of the smart card, which can be integrated with the cover to effectively block deformation tendencies and increase the actual deformation temperature of the smart card.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the smart card is installed in a slot with contacts and baffle without additional anti-deformation structure, then the device complexity is reduced, but the smart card deforms due to overheating during operation
Solution Approach 1:
The patent introduces a limiting rib extending from the baffle in the upward direction (vertical dimension) to restrict smart card deformation. This adds a new spatial dimension of constraint without significantly increasing overall structural complexity, effectively preventing warping while maintaining design simplicity.
Solution Approach 2:
The anti-deformation function is segmented into two independent components: the baffle providing lateral support and the limiting rib providing vertical support. This segmentation allows each component to perform its specific function efficiently, improving reliability without requiring a complete structural redesign.
2Manufacturing precision
If the smart card is constrained by contacts and baffle only, then the manufacturing precision requirements are reduced, but the smart card warps at two ends and recesses in the middle due to heat expansion differences
Solution Approach 1:
The limiting rib extends vertically from the baffle to provide constraint in the upward dimension, complementing the lateral constraint of the baffle. This multi-dimensional constraint system maintains smart card flatness without requiring higher manufacturing precision for any single component.
3Device complexity
If no anti-deformation structure is added to the housing, then the device complexity and material usage are minimized, but the smart card cannot function effectively above 70°C due to deformation
Solution Approach 1:
The limiting rib adds vertical dimension constraint to the existing baffle structure, enabling the smart card to maintain proper contact and flatness at elevated temperatures without requiring complete structural redesign or additional materials.
Solution Approach 2:
The limiting rib is pre-installed on the baffle during manufacturing, providing proactive deformation prevention before the smart card is installed. This preliminary anti-deformation measure ensures the smart card can operate reliably across the extended temperature range from -40°C to +95°C.
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 anti-deformation part suppresses deformation of the smart card due to overheating, allowing it to function effectively up to higher temperatures (from 70°C to over 95°C), while maintaining structural integrity and usability.
Implementation Method 1
Due to insufficient limitations to the smart card, and different coefficients of heat expansion of materials, as illustrated in FIG. 2, the applied force from the contacts may cause the smart card to warp at two ends and the applied force from the baffle may cause the smart card to be recessed in the middle. Therefore, the smart card tends to deform due to overheating.
Implementation Method 2
the anti-deformation part is an elastic limiting pad (65) arranged on the cover (312, 612), propped against the smart card when the cover (312, 612) covers on the body (311, 611), and adapted for blocking upward deformation of the smart card (2)
Data Source
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AI summary
The present invention relates to a communication technology and discloses an electronic product with a smart card, which is designed for better preventing the deformation of the smart card due to overheating. The electronic product with a smart card includes a housing, a circuit board in the housing, a tray on the circuit board, a slot in the tray, a smart card in the slot, and an anti-deformation part on the housing for limiting the smart card or an anti-deformation part on the tray for fully limiting the smart card, thereby preventing the deformation of the smart card due to overheating. The present invention may be used for preventing the deformation of the smart card due to overheating.