Coin Dispensing Rotary Disc Reverse Rotation
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Solution Overview
Problem
Conventional coin dispensing devices face challenges in quickly dispensing coins when the remaining amount is small, inefficient use of storing capacity, and difficulty in miniaturization and cost reduction due to complex mechanisms and additional components.
Innovation Solution
A coin dispensing method and device that utilizes a rotary disc rotated in a forward direction for dispensing coins one by one, followed by a reverse rotation after stopping to stir and position coins effectively, utilizing a brushless DC motor with an electric brake for efficient stopping and reverse rotation, allowing for quick dispensing and optimal use of storage capacity without additional devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotary disc is arranged aslant to enable coin dispensing, then coins can be dispensed one by one, but the rod-like elastic member cannot recover its original form after deformation and cannot be applied in small coin dispensing devices
Solution Approach 1:
The patent removes the rod-like elastic member from the system entirely. Instead of using an elastic member to return the rotary disc to its initial position, the invention uses a controller to actively control the motor's rotation, allowing the disc to stop precisely at the lowermost position without requiring elastic recovery mechanisms.
Solution Approach 2:
The patent replaces the mechanical elastic member-based return system with an electrical control system. The controller manages the motor's rotation and stopping, substituting the passive mechanical elastic recovery with active electrical control, thereby enabling precise positioning without elastic deformation issues.
2Productivity
If a coin runner is added to flip coins and prevent angular stacking, then coins can be dispensed quickly, but the device cannot be miniaturized and cost increases
Solution Approach 1:
The rotary disc is designed to perform multiple functions: it dispenses coins during forward rotation and simultaneously flattens angularly stacked coins during reverse rotation. This multi-functionality eliminates the need for separate coin-flipping devices like coin runners, achieving both dispensing speed and coin positioning without additional components.
Solution Approach 2:
The patent merges the coin dispensing function and the coin flattening function into a single rotary disc mechanism. By combining these functions into one component rather than using separate devices, the system achieves efficient coin handling while maintaining a compact, simple structure suitable for miniaturization.
3Quantity of substance
If the rotary disc reversely rotates to flatten angularly stacked coins, then coins can be retained effectively, but coins may be located in the receiver without dispensing when remaining coins are small
Solution Approach 1:
The controller monitors the number of remaining coins in the rotary disc and adjusts the reverse rotation operation accordingly. When only a small number of coins remain, the controller suppresses the reverse rotation operation, preventing coins from being misplaced in the receiver. This feedback-based control ensures both effective coin retention and accurate dispensing based on real-time coin quantity.
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
Enables quick dispensing of coins, even when only a few are remaining, optimizes storage capacity utilization, and allows for miniaturization and cost reduction by simplifying the device design and reducing energy consumption.
Implementation Method 1
a rotary disc for dispensing coins is driven by a inner-rotor brushless DC motor
Implementation Method 2
stopped by application of an electric brake
Data Source
Figure 1
Figure 2(A)~2(F)
Figure 3
AI summary
The first object of the present invention is to provide a coin dispensing method and device capable of quickly dispensing a coin when the remaining amount of coins in a storing bowl is small. The second object of the present invention is to provide a coin dispensing method and device capable of effectively using a retaining capacity of a coin storing bowl. The third object of the present invention is to provide a coin recycling machine capable of quickly dispensing a specified number of specified coins. A coin dispensing method carried out in a coin dispensing device, comprising: separating and dispensing coins (102) one by one by rotation of a rotary disc (110) by rotating a rotary disc in a forward direction; and stopping the rotary disc by stop units (130, 132) after dispensing a specified number of coins, the method further comprising: rotating the rotary disc in a direction opposite to the forward direction by at least one rotation when the rotary disc stops.