Vending Machine UI and Coin Return for Jam-Resistant Transactions
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Solution Overview
Problem
Vending machines often experience issues with coin acceptors jamming, bill validators incorrectly rejecting currency, and require frequent maintenance due to space constraints, leading to customer frustration and operational challenges.
Innovation Solution
A user interface guide with LED cues to assist customers through transactions, an electronically operated coin return mechanism, and a hinged delivery bin assembly to facilitate access to internal components, along with wireless communication between vending machines and management systems to enhance operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional push button interface with coin acceptor and bill validator is used, then the vending machine can accept payments, but the coin acceptor may jam up and bill validators may falsely reject currency, leading to customer frustration
Solution Approach 1:
The patent introduces an electronic actuator as an intermediary between the customer's button press and the coin return mechanism. This electronic intermediary provides more reliable and consistent operation compared to traditional mechanical lever arms, reducing the frustration of repeated pressing while maintaining the coin return function.
Solution Approach 2:
The patent replaces the traditional mechanical coin return lever arm system with an electronically actuated mechanism. This substitution eliminates the need for complex mechanical linkages that require multiple presses, providing more reliable and smoother operation while maintaining the same functional outcome.
2Productivity
If the coin box is not cleared often enough, then coins can fill up past the coin detector, preventing further purchases, but frequent clearing requires maintenance
Solution Approach 1:
The patent implements a electronic coin return system that can be activated by customers to self-clear coins from the coin box. This allows the machine to service itself by enabling customers to retrieve their own coins when the box is full, eliminating the need for frequent manual maintenance while maintaining continuous operation capability.
3Reliability
If vending machines require routine maintenance due to wear and vandalism, then operational reliability can be maintained, but maintenance is difficult due to space limitations
Solution Approach 1:
The patent employs a hinged delivery bin assembly that can dynamically change position between a closed operational position and an open maintenance position. This dynamic mechanism allows easy access to internal components for maintenance while maintaining compact space utilization during normal operation, resolving the contradiction between reliability maintenance and accessibility.
4Ease of operation
If a hinged delivery bin assembly is used, then access to internal areas is facilitated, but the structure becomes more complex
Solution Approach 1:
The hinged delivery bin assembly uses a simple hinge joint that allows the bin to pivot between positions. This dynamic element provides easy access to internal components without requiring complex mechanical structures, achieving high accessibility with minimal added complexity.
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
The solution improves customer interaction by guiding users through transactions, simplifies coin return processes, reduces maintenance complexity, and enables remote monitoring and management of vending machines, enhancing overall operational efficiency and customer satisfaction.
Implementation Method 1
A visual display provides LED cues that direct a customer to input a minimum monetary amount, make a product selection, confirm the product selection, or receive change or a return of the customer's money
Data Source
AI summary
A system and method for directing a consumer through a vending machine transaction. The system and method include a UI guide comprising visual cues to direct a consumer to insert a minimum amount of money, make a production selection and confirm the product selection. The system and method provide for the consumer to cancel the transaction and request that return of inserted coins.