Movable Stopper for Multi-Banknote Cassette Alignment
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Solution Overview
Problem
Conventional banknote cassettes in ATMs face difficulties in aligning and storing banknotes of different sizes, leading to issues like jamming when handling various kinds of banknotes, and require multiple storage spaces and support plates, increasing manufacturing costs and reducing space efficiency.
Innovation Solution
A multi-banknote cassette with a movable stopper installed in the stack guide that rotates to protrude or retreat based on banknote size, allowing for alignment and stacking of banknotes of varying sizes using a combination of a movable stopper and a fixed banknote stopper, as detected by a banknote detection system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed banknote stopper is used to regulate banknotes, then large banknotes can be aligned properly, but small banknotes cannot be regulated effectively causing misalignment
Solution Approach 1:
The patent applies the dynamics principle by making the stopper movable rather than fixed. The stopper can rotate between a first position (protruding from stack guide) for small banknotes and a second position (retracted) for large banknotes. This dynamic adjustment allows the same structure to adapt to different banknote sizes while maintaining precise alignment regulation.
Solution Approach 2:
The patent changes the position parameter of the stopper based on banknote size detection. When a small banknote is detected, the stopper rotates to the first position; when a large banknote is detected, it rotates to the second position. This parameter change enables the system to handle various banknote sizes with consistent alignment precision.
2Adaptability or versatility
If multiple storage spaces and support plates are added to handle different banknote sizes, then all banknote sizes can be stored, but manufacturing costs increase and space efficiency decreases
Solution Approach 1:
The patent applies universality by designing a single storage space and single support plate that can accommodate various banknote sizes through the movable stopper mechanism. The stopper's ability to change position allows one structure to serve multiple functions (handling different banknote sizes), eliminating the need for multiple specialized storage spaces and support plates.
Solution Approach 2:
The dynamic stopper mechanism enables a single static storage space and support plate to adapt to different banknote sizes. Instead of creating multiple static storage compartments, the system uses one versatile compartment with a dynamically adjustable stopper that regulates banknotes of various sizes within the same space.
3Manufacturing precision
If a movable stopper is added to regulate small banknotes, then alignment precision improves for various sizes, but device complexity increases
Solution Approach 1:
The patent uses a rotatable stopper mechanism that can dynamically adjust its position. The stopper rotates between two positions (protruding and retracted) based on banknote size detection. This dynamic design provides precise alignment regulation for small banknotes while avoiding the need for complex multi-component mechanisms.
Solution Approach 2:
The stopper's position parameter is changed based on detected banknote size. The system detects whether a small or large banknote is present and accordingly adjusts the stopper to the appropriate position. This parameter-based control achieves high alignment precision with a relatively simple binary-state mechanism rather than a continuously complex adjustable system.
Data Source
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Figure 3
Figure 4(a)~4(b)
AI summary
Provided is a multi-banknote cassette with a movable stopper, which is capable of storing various kinds of banknotes at the same time. The multi-banknote cassette includes a movable stopper which is installed in a stack guide for guiding banknotes introduced into a cassette body of the banknote cassette toward a banknote stopper, and rotated to protrude from or retreat into a transfer path of the banknotes. When a banknote having a relatively small size among the banknotes inserted into the banknote cassette is introduced, the movable stopper is rotated to protrude from the stack guide and regulates the front end of the introduced banknote, and when a banknote having a relatively large size is introduced, the movable stopper is rotated to retreat into the stack guide, and a banknote stopper installed at the rear of the stack guide regulates the front end of the introduced bank.