Stationary Magnetic Card Reader With Card-Bending Guide Contact
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Solution Overview
Problem
Magnetic card readers with movable magnetic reading heads are fragile, require complex and expensive flexible printed circuits, and are difficult to assemble, with issues in electromagnetic protection and alignment adjustment.
Innovation Solution
A magnetic card reader with a fixed magnetic reading head and integral resilient deformation means in the guide, eliminating the need for flexible printed circuits and simplifying assembly, while ensuring robust contact with the magnetic strip through deformation of the card.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If deformable means are used to move the magnetic reading head to press it against the magnetic card, then good contact quality is achieved, but the device becomes fragile and complex
Solution Approach 1:
Instead of moving the magnetic reading head to achieve contact with the magnetic card, the patent inverts the approach by keeping the reading head fixed and moving the magnetic card itself. The deformable means are attached to the card rather than the head, so the card deforms to press its magnetic strip against the stationary reading head, achieving good contact without complex head movement mechanisms
Solution Approach 2:
The patent segments the deformable means into multiple independent elements (such as deformable walls or pressing elements) that can be distributed along the card. This segmentation allows each element to independently deform and apply pressure, improving contact reliability while keeping each individual element simple and reducing overall structural complexity
2Reliability
If flexible printed circuits are used to connect the movable reading head, then electrical connection is achieved, but manufacturing cost increases and assembly becomes complex
Solution Approach 1:
The patent extracts and eliminates the flexible printed circuit from the system by making the magnetic reading head stationary. Since the reading head no longer moves, it can be directly mounted on the reader body with rigid electrical connections, removing the need for flexible circuits entirely and simplifying both manufacturing and assembly
Solution Approach 2:
The patent introduces a stationary mounting structure as an intermediary between the magnetic card and the reading head. This fixed structure provides a stable platform for the reading head and serves as the intermediary through which electrical connections are made, replacing the need for flexible printed circuits that would otherwise be required to accommodate head movement
3Reliability
If the magnetic reading head moves to maintain contact, then reading reliability is improved, but electromagnetic protection becomes complicated
Solution Approach 1:
The patent inverts the traditional approach by making the reading head stationary and the magnetic card movable. This inversion allows electromagnetic protection measures to be applied to the fixed reading head and its connections, which is much simpler than providing protection for moving parts. The stationary head can be shielded with fixed electromagnetic shielding structures
4Force
If deformable means are used to press the reading head, then contact force is sufficient, but the force required to pass the card increases causing user perception of blocking
Solution Approach 1:
The patent inverts who applies the force: instead of the reading head applying force to the card, the card itself applies force to the reading head through its deformation. The deformable means on the card automatically engage and press the magnetic strip against the stationary head during normal card insertion, providing sufficient contact force without requiring additional force from the user
Solution Approach 2:
The deformable means are designed to automatically engage and apply the necessary contact force during card insertion without external control or additional user effort. The elastic deformation of the card's deformable elements self-regulates the contact pressure, providing adequate force for reliable reading while maintaining smooth card passage and avoiding user-perceived blocking
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 reduces manufacturing costs, enhances robustness, and simplifies assembly, ensuring reliable data reading with improved durability and ergonomic use, without the need for complex adjustments or electromagnetic protection.
Implementation Method 1
resilient deformation means which are intended to come into contact with the magnetic card so as to deform it when the magnetic card slides in the passage zone
Data Source
AI summary
A magnetic card reader including an electronic card, a magnetic reading head which is intended to read data contained in a magnetic strip of a magnetic card and to transmit these data to the electronic card, and a zone for passage of a magnetic card, in which a magnetic card is intended to slide and which includes a guide member intended to guide the magnetic card as it slides in the passage zone. The magnetic reading head is fixedly mounted on the magnetic card reader. The guide member is integral with resilient deformation members which are intended to come into contact with the magnetic card so as to deform it when the magnetic card slides in the passage zone in order to allow the magnetic strip to be read by the magnetic reading head.