Chip Card Reader Sealing Element with Air Exchange Gap
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Solution Overview
Problem
Existing chip card reading devices face issues with overheating and water protection, as the seals do not allow for air exchange and can trap moisture, leading to potential damage to the chip card.
Innovation Solution
A chip card reading device with a push element that moves between retracted and extended states, featuring a sealing element with a spaced area at the bottom to allow air exchange and water drainage, and a folding element with holding edges to securely support and protect the card during insertion and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a complete circumferential sealing element is used to seal the sliding element against the housing, then water protection is improved, but overheating occurs due to lack of air exchange
Solution Approach 1:
The sealing element is segmented into different functional zones: a sealed upper portion (first sealing region) that contacts the housing for water protection, and an open lower portion (second sealing region) that separates from the housing to allow air exchange and prevent overheating. This segmentation resolves the contradiction by providing both sealing and ventilation functions within a single component.
2Object-affected harmful factors
If the sliding element is sealed against the housing, then water drainage is improved, but the chip card becomes unreachable when extended
Solution Approach 1:
The folding element is designed to dynamically change position between folded and unfolded states. When unfolded, it allows the chip card to be reached and removed; when folded, it maintains the sealing function for water drainage. This dynamic transformation resolves the contradiction between accessibility and sealing.
3Reliability
If the folding element is held in extended position, then card protection is improved, but card removal becomes difficult
Solution Approach 1:
The holding element is designed to automatically engage and hold the folding element in its extended protective position during normal operation. However, it is designed to disengage when intentional removal action is applied, allowing easy card removal when needed while maintaining protection during use.
4Reliability
If the sealing element is made complete and circumferential, then sealing effectiveness is improved, but air exchange is prevented
Solution Approach 1:
The sealing element exhibits different sealing qualities at different locations: the upper portion (first sealing region) provides complete sealing contact with the housing for effective water protection, while the lower portion (second sealing region) intentionally separates from the housing to provide air exchange channels. This local differentiation of sealing quality resolves the contradiction between sealing effectiveness and air exchange.
Data Source
Figure 1
Figure 2~4
Figure 5~6
AI summary
The present invention relates to a chip card reader 1 with a housing 8 in which a sliding element 4, which receives a chip card 9, is arranged to move back and forth between a retracted and an extended state. The chip card 9 cannot be removed when the sliding element 4 is retracted, and the sliding element 4 is sealed in the retracted state by means of a sealing element 6. It is provided that the sealing element 6 has, in the retracted state of the sliding element 4, a region 60 on at least one side that is spaced apart from the housing 8.