Foreign Material Storage Unit for Cash Handling Device Gaps
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Solution Overview
Problem
Foreign materials entering the medium processing device through gaps, such as the hole portion for the sensor, can cause miscalculations and stop the drive unit, compromising the reliability of the device.
Innovation Solution
A depositing/dispensing unit with a feeding unit and a shutter to open/close the unit, along with a foreign material storage unit positioned opposite to the feeding unit, is used to store foreign materials that have entered from the gaps, preventing them from entering the device's internal parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If gaps are formed in the depositing/dispensing unit for sensor operation, then the sensor can detect coins and foreign materials, but foreign materials can enter through these gaps and cause miscalculations or drive unit stoppage
Solution Approach 1:
The device is divided into separate functional zones: a feeding unit for media input, a gap region for sensor operation, and a foreign material storage unit for capturing intruders. This segmentation allows the sensor to operate through the gap while foreign materials are contained in a dedicated storage compartment, preventing them from reaching internal components.
Solution Approach 2:
The foreign material storage unit acts as an intermediary between the gap and the internal device components. It captures foreign materials that enter through the gap, serving as a buffer that prevents these materials from causing miscalculations or drive unit stoppage while allowing the sensor to continue its detection function.
2Ease of operation
If the depositing/dispensing unit is designed with a shutter for opening/closing, then media can be controlled, but the structure becomes more complex
Solution Approach 1:
The shutter mechanism serves multiple functions: it controls media flow into the feeding unit, seals the gap area when not in use, and can be coordinated with the foreign material storage unit to prevent foreign materials from entering internal components. This multi-functionality reduces the need for additional separate components.
Data Source
AI summary
A medium processing device includes a depositing/dispensing unit that has a feeding unit into which media are fed and a shutter opening/closing the feeding unit and a foreign material storage unit that is disposed on a side opposite to the feeding unit with a gap formed in the depositing/dispensing unit interposed therebetween and stores foreign materials that have entered from the gap.


