Scanning Device Card Blocking Board Alignment Mechanism
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Solution Overview
Problem
Current scanning devices face issues with cards being skewed or falling out during the scanning process, leading to incomplete scans and higher manufacturing costs due to the need for multiple sensors and a larger volume.
Innovation Solution
A scanning device with a card supporting mechanism featuring a blocking board that ensures the card is aligned with the scanning read line and prevents it from falling out, utilizing a single sensor and reducing the device's volume and manufacturing cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used to detect card position, then card positioning accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent removes the second sensor from the system by implementing a card supporting mechanism with a blocking board that passively maintains card position. This extraction of the redundant sensor component directly reduces manufacturing cost while the blocking board ensures card positioning accuracy is maintained through mechanical support during the scanning process
Solution Approach 2:
The card supporting mechanism with the blocking board provides self-service functionality by automatically maintaining card position without requiring active detection from multiple sensors. The blocking board passively prevents card skewing and positioning errors through its structural design, eliminating the need for complex sensor-based detection and control systems
2Volume of stationary object
If device volume is reduced to make channels shorter, then device compactness is improved, but card stability deteriorates causing cards to fall out
Solution Approach 1:
The patent introduces a blocking board that extends in a direction perpendicular to the card feeding direction, creating a three-dimensional card supporting mechanism. This dimensional addition provides lateral support to prevent card skewing and falling out, maintaining card stability without requiring increased channel length or device volume
Solution Approach 2:
The blocking board acts as an intermediary element between the card and the device structure. It provides mechanical support and guidance to the card during the scanning process, preventing card instability and falling out while allowing the device to maintain a compact volume with shorter channels
3Manufacturing precision
If card is fed backward to reposition for scanning, then scanning completeness is improved, but card skewing increases causing incomplete scans
Solution Approach 1:
The blocking board performs preliminary action by pre-positioning and stabilizing the card before the backward feeding operation. This preliminary mechanical support prevents card skewing from occurring in the first place, ensuring that when the card is fed backward for repositioning, it maintains proper alignment and scanning completeness is achieved without incomplete scans
Data Source
AI summary
A scanning device includes a base, an upper cover pivotally covered to the base, a motor mounted to the base, two roller assemblies, a sensor mounted in the first channel, and a card supporting mechanism. A first channel, a scanning channel and a second channel are formed between the upper cover and the base. The scanning channel has a scanning read line. The first channel, the scanning channel and the second channel are communicated with one another. The two roller assemblies are connected with and driven by the motor. The card supporting mechanism is mounted to the base. The card supporting mechanism includes a blocking board movably disposed behind the second channel along the longitudinal direction, and a front surface of the blocking board is parallel to the scanning read line and orthogonal to the second channel.