Card Reader Insertion Part Static Discharge via Flexible Wiring
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Solution Overview
Problem
Card readers with substrates and light sources in the card insertion part are susceptible to static electricity, leading to improper operations and potential damage, especially when an insulating member is used between the substrate and base plate, which complicates static electricity discharge.
Innovation Solution
A card insertion part with a substrate having a light source, an insulating member between the substrate and base plate, and a flexible wiring member connected to a ground wiring pattern surrounding the card passage opening, allowing static electricity to be captured and discharged through a connection to the card reader main body, reducing the risk of damage from static electricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an insulating member is disposed between the substrate and the base plate to prevent short-circuiting, then the risk of short-circuiting is reduced, but the ability to release static electricity is impaired
Solution Approach 1:
The patent introduces a flexible wiring member as an intermediary element that bridges the gap between the insulating member and the base plate. This flexible wiring member provides a dedicated electrical pathway for static electricity to travel from the substrate, through the insulating member, to the base plate and ultimately to ground, without compromising the electrical insulation function of the insulating member for other circuit paths
Solution Approach 2:
The patent segments the electrical connection path by separating the signal/power transmission function (handled by the insulating member) from the static electricity discharge function (handled by the flexible wiring member). This segmentation allows each component to specialize in its specific function without interfering with the other
2Illumination intensity
If the number of light sources or types of light sources is increased for decoration, then the decorative effect is improved, but the circuit pattern complexity increases
Solution Approach 1:
The patent utilizes the third dimension (vertical space) by routing circuit traces on both the front surface and back surface of the substrate, and using through-holes to connect them. This allows complex lighting circuits to be implemented without increasing the planar footprint or compromising the decorative appearance from either the front or back views
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 solution effectively captures and discharges static electricity, reducing the likelihood of improper operations and damage to the substrate and light sources, while allowing for complex circuit patterns and decorative lighting without short-circuiting issues.
Implementation Method 1
the ground wiring pattern is electrically connected to the card reader main body via the flexible wiring member
Data Source
AI summary
A card insertion part may include a base plate secured to a card reader main body; a substrate that is disposed on an opposite side of the card reader main body with respect to the base plate and including a light source installed on a surface thereof on an opposite side of the base plate; a cover with optical transparency that spreads over the substrate on an opposite side of the base plate; an insulating member that is disposed between the substrate and the base plate; and a flexible wiring member connected to the substrate. The substrate may include an opening through which the card is passed, and a ground wiring pattern formed on an area surrounding the opening. The ground wiring pattern may be electrically connected to the card reader main body via the flexible wiring member.