Spring-Loaded Mechanical Wallet for One-Handed Card Access
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Solution Overview
Problem
Existing card holders require manual operation to open and close, are prone to wear and tear, and fail to securely store cards due to aging materials, making them inconvenient and less appealing to users.
Innovation Solution
A mechanical wallet with a sliding platform panel and top cover that automatically opens and closes using a spring mechanism, combined with a resistance spring thimble locking mechanism to ensure safety and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to open and close the card holder, then the structure can be simple, but the ease of operation deteriorates and requires two hands
Solution Approach 1:
The card holder uses a spring mechanism that automatically opens and closes the top cover without requiring manual operation. The spring is pre-loaded to provide the necessary force for automatic opening when the sliding platform is pushed, and automatic closing when the sliding platform returns to its initial position, enabling one-handed operation while maintaining relatively simple structure
Solution Approach 2:
The spring is pre-loaded in advance to store elastic potential energy, which is then converted to kinetic energy to automatically open and close the top cover. This preliminary preparation of the spring mechanism eliminates the need for manual operation during actual use
2Reliability
If complex injection molded parts and silicone are used to prevent card from falling, then card storage reliability is improved, but the durability deteriorates due to aging
Solution Approach 1:
The patent removes the aging-prone silicone material and complex injection molded parts from the card holder structure. Instead, it uses a mechanical sliding platform mechanism with a step rod that physically pushes cards out and returns them, eliminating the need for silicone resistance and complex molded components that are prone to aging
Solution Approach 2:
The patent replaces durable but aging-prone materials like silicone and complex injection molded parts with simpler mechanical components that are easier to replace if needed. The sliding platform and step rod mechanism uses basic mechanical elements that can be easily replaced rather than relying on aging-resistant materials
3Ease of operation
If manual operation is used to push card back to card holder, then the structure can be simple, but the ease of operation deteriorates and affects user enthusiasm
Solution Approach 1:
The step rod mechanism automatically pushes cards back to their original positions in the card holder when the sliding platform returns to its initial position. This automatic card return function eliminates the need for manual operation to push cards back, improving ease of operation while maintaining relatively simple structure through the use of the step rod and spring mechanism
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 one-handed operation and secure storage of cards, preventing accidental opening while maintaining convenience and safety.
Implementation Method 1
The cylinder of the top cover is provided with a spring
Implementation Method 2
the sliding platform panel is provided with a resistance spring thimble locking mechanism
Data Source
AI summary
The present disclosure discloses a mechanical wallet or a card holder, which includes a sliding platform panel, a sliding groove bottom plate, a top cover, and a step rod. The sliding platform panel and the sliding groove bottom plate form a pair of sliding rails that can move up and down. The step rod is provided in the sliding platform panel and the sliding groove bottom plate and can rotate. The top cover is provided on the sliding rails composed by the sliding platform panel and the sliding groove bottom plate and can rotate relative to the sliding groove bottom plate by a cylinder of the top cover. The cylinder of the top cover is provided with a spring; the sliding groove bottom plate is further provided with a headless screw, which runs through the sliding groove bottom plate and abuts against the top cover.