Mobile Terminal Trigger Mechanism for Barcode Reader Operation
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Solution Overview
Problem
Conventional industrial PDAs with information recognition modules, such as barcode and RFID readers, face challenges in convenience and stability due to the need to operate buttons on densely packed keypads, making it difficult to read barcodes or RFID tags efficiently.
Innovation Solution
A mobile terminal design featuring a trigger exposed through the rear casing that can be pulled with the index finger to operate the information recognition module, improving convenience and stability by allowing the user to maintain a secure grip on the device while operating the module, and incorporating a sealing member for elastic bias and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a barcode reader module is provided in an industrial PDA with densely packed button keys, then the device can read barcodes, but the operation becomes inconvenient as users must find and press buttons on a crowded keypad while holding the device
Solution Approach 1:
The patent extracts the barcode reader operation function from the main keypad area and provides it through a separate trigger mechanism. The trigger is positioned on the rear surface of the terminal, allowing users to operate the barcode reader with their index finger while maintaining a secure grip on the device, eliminating the need to search through densely packed keypad buttons.
2Ease of operation
If a trigger mechanism is exposed through the rear casing for operating the information recognition module, then ease of operation is improved, but the rear casing structure becomes more complex and requires additional sealing components
Solution Approach 1:
The patent employs a sealing member made of flexible material that can elastically deform to cover the trigger opening in the rear casing. This flexible sealing approach allows the trigger to be exposed for operation while maintaining environmental protection, avoiding the need for complex rigid sealing structures.
3Reliability
If a sealing member is added to protect against water ingress and provide elastic bias for the trigger, then reliability is improved, but the device complexity and manufacturing complexity increase
Solution Approach 1:
The sealing member is designed to automatically perform multiple functions: it seals the trigger opening to prevent water ingress, provides elastic bias to return the trigger to its initial position after operation, and requires no additional active components or complex assembly procedures. This self-service design improves reliability while keeping manufacturing simple.
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
Enhances the convenience and stability of operating information recognition modules by allowing easy access and operation with the index finger, reducing the complexity of keypad operations and improving the user experience, while also providing a sealing mechanism to prevent water ingress and enhance the operation feel.
Implementation Method 1
a sealing member which surrounds an inner side of the trigger cover and elastically biases the trigger in a direction opposite to a direction of pulling the trigger when the trigger is pulled
Data Source
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AI summary
The present invention relates to a mobile terminal having an information recognition module. The mobile terminal having an information recognition module of the present invention comprises: a terminal casing with a front casing and a rear casing coupled with each other; an information recognition module coupled to the terminal casing; and an information recognition module drive unit, which has a trigger provided at the terminal casing in such a manner that the trigger is exposed outside of the terminal casing, and an operation switch, which generates an electrical signal for operating the information recognition module by a trigger pull motion. According to the present invention, procedures for operating the information recognition module can be improved in convenience and stability.