Low-profile card reader with cantilevered support arm
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Solution Overview
Problem
Conventional card readers are bulky and complex, with thick profiles and multiple components, which limits their integration in low-profile point of sale systems and increases assembly complexity and costs.
Innovation Solution
A low-profile card reader design featuring a cantilevered support arm with a magnetic reading head, minimizing thickness by arranging the support arm parallel to the card insertion direction and using a flexible arm to bias the reading head, along with a hybrid capability to read both magnetic stripes and integrated circuit chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional card reader design is used, then card reading functionality is achieved, but the device becomes bulky and complex with thick profile
Solution Approach 1:
The patent combines the magnetic stripe reader and IC card reader into a single integrated housing, eliminating the need for separate devices. The support arm structure integrates multiple functions: it supports the magnetic reading head, provides the ramp surface for card insertion, and houses the IC card reader, thereby reducing overall component count and device thickness.
Solution Approach 2:
The support arm serves multiple functions simultaneously: it acts as a structural support for the magnetic reading head, provides the inclined ramp surface for card insertion guidance, and contains the IC card reader within its structure. This multi-functionality reduces the number of separate components needed, thereby reducing device complexity and thickness.
2Ease of manufacture
If conventional card reader design is used, then card reading functionality is achieved, but assembly complexity and costs increase
Solution Approach 1:
By integrating the magnetic stripe reader, IC card reader, and support arm structure into a single housing unit, the patent reduces the number of separate components that need to be assembled. This integration simplifies the manufacturing process and reduces assembly complexity and costs.
Solution Approach 2:
The multi-functional support arm reduces the total component count by combining structural support, card guidance (via integrated ramp), and IC card reading functions into one element, thereby simplifying assembly procedures and reducing manufacturing complexity.
3Length of moving object
If support arm is arranged perpendicular to card insertion direction, then reading head is properly positioned, but device thickness increases
Solution Approach 1:
The patent changes the orientation of the support arm from perpendicular to parallel with the card insertion direction. This dimensional reorientation allows the magnetic reading head to be positioned correctly through the integrated ramp structure, which guides cards at the appropriate angle, thereby maintaining reading head positioning accuracy while reducing device thickness.
Solution Approach 2:
The flexible support arm can deflect to accommodate cards of varying conditions (warpage, thickness), ensuring reliable magnetic stripe reading while maintaining a thin device profile. The dynamic flexibility compensates for the changed orientation, ensuring proper reading head positioning without increasing thickness.
4Length of moving object
If flexible support arm is used to bias reading head, then card contact is maintained, but device thickness increases
Solution Approach 1:
The patent uses a flexible support arm that can deflect to maintain contact between the magnetic reading head and the card magnetic stripe. This flexibility ensures reliable card reading by accommodating variations in card thickness and warpage while keeping the device profile thin, as the flexibility is achieved through the arm's geometry rather than additional thickness.
Solution Approach 2:
By orienting the support arm parallel to the card insertion direction rather than perpendicular, the patent achieves the necessary flexibility and card contact pressure without increasing device thickness. The ramp integration provides the mechanical advantage needed to maintain reliable reading head contact in a thin profile configuration.
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 design achieves a thin form factor of less than 8 mm, reduces component count, and simplifies assembly while maintaining effective card reading performance, making it suitable for low-profile applications and cost-effective production.
Implementation Method 1
a flexible arm to bias the reading head
Data Source
AI summary
A low-profile card reader, including: a carriage; a single support arm including a first end statically mounted to the carriage, a second end, free from the carriage, a body tapering from the second end toward the first end, wherein the body is free from the carriage, such that the support arm freely deflects along a support arm length relative to the carriage, and a set of strengthening channels extending along the support arm length; and a magnetic reading head statically connected to the second end of the support arm.