Adjustable Rotor Coin Dispensing Mechanism for Mixed Denominations
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Solution Overview
Problem
Existing coin dispensing apparatuses require multiple rotors for dispensing coins of different thicknesses, increasing manufacturing costs, and face challenges with efficient dispensing of small coins and fraud detection in optical sensors.
Innovation Solution
A coin dispensing apparatus with a rotor that can be mounted in multiple configurations to accommodate different coin thicknesses and an improved optical sensor using dual detection beams to prevent fraudulent interference, along with a controller for efficient mixed-coin dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If different rotors are used for dispensing coins of different thicknesses, then the dispensing accuracy for various coin types is improved, but the manufacturing cost and device complexity increase
Solution Approach 1:
The rotor's position relative to the dispensing surface is made adjustable through multiple mounting configurations, allowing the same rotor to adapt to different coin thicknesses by changing its axial position, thereby eliminating the need for multiple fixed rotors
Solution Approach 2:
A single rotor is designed to perform multiple functions by accommodating different mounting positions, enabling it to dispense various coin thicknesses effectively, thus replacing multiple specialized rotors with one universal component
2Manufacturing precision
If the rotor base is spaced apart from the rotor seat surface, then coins of specific thickness can be dispensed, but the adaptability to different coin thicknesses is reduced
Solution Approach 1:
The fixed spacing is transformed into an adjustable arrangement by providing multiple mounting configurations, allowing the rotor-base distance to be dynamically changed according to the coin thickness required, thus achieving both precision and versatility
3Reliability
If a single light beam is used for detection, then the device complexity is reduced, but the reliability against fraud is insufficient
Solution Approach 1:
Multiple light beams provide multiple detection points that work together to create a comprehensive verification system, where the combined feedback from all beams enhances fraud detection reliability while maintaining reasonable system complexity
Data Source
AI summary
A coin dispensing apparatus, which ejects coins by squeezing them substantially chordally between an element on a rotor and an ejector, has a variable height rotor (3), an improved two-part coin ejector (10a, 10b). A optical sensor for detecting coins being ejected positive detects both the presence and absence of coins in a coin path. Also, a payout device comprising a first coin dispensing device (61) including a dispensed coin type detector and a second coin dispensing device (62). The first coin dispensing device (61) is used to store coins of plurality of large denominations and is used initially for paying out an amount. The second coin dispensing device (62) is used for a single low denomination coin type and coins are dispensed from the second coin dispensing device (62) after the first coin dispensing device has been used as much as possible.