Press-Grab Card Box Mechanism for Secure Card Retention
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Solution Overview
Problem
Traditional card boxes fail to effectively prevent cards from slipping out during use, leading to loss or damage, despite designs with lids or zippers that still allow cards to fall off easily.
Innovation Solution
A press-grab type card box with a triggering member that moves between positions to push cards out and includes a friction member to prevent slipping, combined with an elastic member for restoration and a detachable housing for convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple plug-in design is used for card box, then the device complexity is reduced, but the card stability deteriorates causing cards to easily slide out
Solution Approach 1:
The card box employs a dynamic pressing mechanism that can transition between different states. The pressing member is movable and can apply variable pressure to the card, allowing the system to adapt between easy access (lower pressure) and secure retention (higher pressure) states, resolving the contradiction between simplicity and reliability
Solution Approach 2:
A pressing member is introduced as an intermediary element between the card box housing and the card. This mediator applies controlled force to the card, providing enhanced retention without requiring complex structural modifications to the housing itself, thus maintaining simplicity while improving reliability
2Reliability
If cards are held tightly to prevent slipping, then the card stability is improved, but the ease of operation deteriorates making cards difficult to take out
Solution Approach 1:
The pressing mechanism is designed to be dynamic rather than static. The pressing member can be easily moved or disengaged, allowing users to quickly transition from a high-retention state to an easy-access state. This dynamic capability enables both strong card retention and simple retrieval operations
Solution Approach 2:
The pressing member is pre-positioned to automatically engage with and secure the card upon insertion. This preliminary action ensures cards are immediately retained without requiring additional user effort, while the mechanism remains designed for easy disengagement when retrieval is needed
3Productivity
If frequent use of card box is allowed, then the productivity is improved, but the card stability deteriorates causing cards to fall off during frequent taking and placing
Solution Approach 1:
The dynamic pressing mechanism maintains consistent card retention pressure through repeated use. The movable pressing member can automatically re-engage or be quickly re-applied, ensuring that card stability is maintained across multiple insertion and removal cycles, enabling frequent use without compromising retention
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 design allows easy card retrieval while effectively preventing cards from falling off, enhancing user convenience and durability through smooth operation and stable card retention.
Implementation Method 1
the card box is also internally equipped with an elastic member for restoring the pushing member
Implementation Method 2
A friction member is provided on an inner surface of the outer housing for preventing the external card from slipping off
Data Source
AI summary
A press-grab type card box includes an outer housing. An opening is defined in a top end of the outer housing. The outer housing is also provided with an accommodating cavity that is capable of accommodating an external card. The opening is in communication with the accommodating cavity, so that the external card can be pushed into the accommodating cavity from the opening. A pushing member is provided at a bottom portion of the accommodating cavity for holding at least one external card. A friction member is provided on an inner surface of the outer housing for preventing the external card from slipping off. The outer housing is also equipped with a triggering member. The triggering member abuts against the pushing member. The triggering member is configured for moving between a first position and a second position.