Portable Coin Holder With Shallow Segmented Storage
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Solution Overview
Problem
Existing portable coin holders face challenges in reducing overall size while efficiently storing and retrieving coins, due to complex operations and increased force requirements, as well as limitations in determining the number of coins based on frequency of use.
Innovation Solution
The design incorporates a shallow storage part with separate compartments on both sides of the coin holder body, utilizing an operational opening space for easy coin retrieval and O-rings to prevent coin rattling, allowing for a more compact and user-friendly structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a stopper made of elastic material such as rubber or a spring is used to hold the coin inside the storage part, then the coin can be easily taken out, but the force required for taking in and out the coin increases as the holding force increases
Solution Approach 1:
The patent extracts the stopper mechanism from the traditional aperture position and relocates it to the bottom of the storage part. This allows the coin to be held by a simple elastic force at the bottom rather than requiring complex finger operations against a rim stopper, reducing the force needed for coin insertion and removal while maintaining easy retrieval
Solution Approach 2:
Instead of placing the stopper at the aperture rim as in conventional designs, the patent inverts the approach by placing the elastic stopper at the bottom of the storage part. This inversion changes the interaction mechanism from requiring finger force against a rim barrier to simply overcoming a bottom elastic force, simplifying the operation
2Volume of moving object
If storage parts are arranged with as few gaps as possible to reduce overall size, then the coin holder becomes more compact, but the depth of storage parts increases making the design of the case and stopper more difficult
Solution Approach 1:
The patent redistributes storage capacity across multiple horizontal layers instead of increasing vertical depth. By utilizing the horizontal plane more efficiently with multiple shallow storage parts arranged in layers, the design maintains compact overall volume while avoiding the complexities associated with deep single-layer storage compartments
Solution Approach 2:
The patent divides the storage space into multiple shallow storage parts arranged in layers rather than using fewer deep compartments. This segmentation allows for simplified case and stopper design in each layer while maintaining high storage capacity through efficient use of horizontal space
3Quantity of substance
If all coins of one type are stacked in one place, then the storage part becomes deeper, but the maximum tilt angle increases and fluctuation in the substantial effective width of the coin increases
Solution Approach 1:
The patent segments the storage of each coin type across multiple storage parts rather than stacking all coins of one type in a single deep compartment. This segmentation distributes the coins across shallower layers, reducing the tilt angle and maintaining stable coin orientation and effective width throughout the storage structure
Solution Approach 2:
Instead of increasing vertical depth to store more coins of one type, the patent utilizes horizontal distribution across multiple storage parts and layers. This dimensional shift allows for storing the same quantity of coins while maintaining shallow depth and stable coin positioning with reduced tilt angles
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
This solution simplifies the operation of retrieving coins, reduces the overall thickness of the coin holder, and allows for a more efficient allocation of storage based on coin frequency of use, enhancing both usability and compactness.
Implementation Method 1
the aperture expands in accordance with insertion and removal of the coin due to elastic deformation of a storage part
Implementation Method 2
holding the coin by a frictional force between the finger and the coin surface
Data Source
AI summary
Coin storage parts are provided on a front side and a back side of a coin holder to increase the number of storage parts, and make the number of coins stored in each of the coin storage parts approximately half. A structure is adopted in which a coin is pushed out in an operational opening space provided on a side opposite to an aperture for placing the coin into the coin storage part and taking out the coin from the coin storage part, thereby ensuring sufficient operability. A movement of the coin in the coin storage part is prevented by incorporating an O-ring or the like. Since the number of coins stored per one coin storage part is as small as about 2 to 4 coins and the storage part has a shallow depth, it is easy to guide and prevent the movement of the coins.