Expandable Card Holder Structure for Secure Multi-Card Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing card holders are inconvenient for accommodating multiple cards, leading to difficulty in placement and retrieval, and cards often fall out due to bumps, causing unnecessary trouble.
Innovation Solution
A card holder with a first and second clamping plate connected by elastic connecting devices, allowing for variable internal space to stretch and accommodate multiple cards, featuring elastic restoring force to secure cards of varying sizes and prevent falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rigid card holders are used, then structure is simple, but cards cannot be securely held and easily fall out during movement
Solution Approach 1:
The card holder employs flexible connecting members with hinge joints that enable dynamic movement and elastic deformation. These connecting members can bend and flex to accommodate cards of different sizes while maintaining secure retention through elastic restoring force, transforming a static rigid structure into a dynamic adaptive one.
Solution Approach 2:
The internal space of the card holder can dynamically change its parameters (volume, shape) through the elastic deformation of connecting members. When cards are inserted, the connecting members flex to expand the internal space; when cards are removed, they restore to their original shape, automatically adjusting to different card configurations.
2Ease of operation
If multiple cards are stored in a fixed-size holder, then holder structure is simple, but placement and retrieval becomes inconvenient
Solution Approach 1:
The flexible connecting members allow the holder to dynamically adapt its internal configuration based on the number and size of cards stored. This dynamic adjustment makes it easier to access and retrieve cards regardless of how many are stored, as the holder automatically creates optimal spacing and accessibility.
Solution Approach 2:
The holder is divided into multiple card slots separated by flexible connecting members. Each slot can independently adjust its size and position, allowing cards to be easily accessed one at a time while the other cards remain securely held in their respective slots.
3Volume of moving object
If the card holder is made compact for portability, then ease of carrying is improved, but the space for accommodating multiple cards is reduced
Solution Approach 1:
The card holder utilizes elastic deformation of connecting members to achieve variable internal volume from a compact external form. When cards are inserted, the connecting members flex to expand the internal capacity; when empty, the holder maintains a compact size for portability. This allows the holder to adapt its volume parameters based on storage needs.
Solution Approach 2:
The flexible connecting members are nested within the holder structure, allowing them to fold and compress when not in use, maintaining a compact form factor. When cards are inserted, these nested connecting members unfold and expand to provide adequate space for multiple cards of various sizes.
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 ensures simple operation, secure card accommodation, and prevents cards from falling out, while occupying minimal space and being cost-effective.
Implementation Method 1
each connecting device includes two connecting members which are directly or indirectly hinged; the connecting members are unfolded so that the first card clamping plate and the second card clamping plate move relatively, thus forming an internal variable space being able to stretch out and draw back freely
Implementation Method 2
the card holder body further includes elastic members arranged on the card holder body, and the elastic members provide an elastic restoring force for the first card clamping plate and the second card clamping plate being restored from an open position to an initial position
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention provides a card holder including a card holder body. The card holder body includes a first and second card clamping plates; at least one connecting device is arranged between the first and second card clamping plates, and the first and second card clamping plates are connected through the at least one connecting device. Each connecting device includes two hinged connecting members. The connecting members are closed and opened to produce a relative displacement between the first and second card clamping plates, thus forming an internal variable space to accommodate a plurality of cards; the card holder body further includes an elastic member arranged on the card holder body, and the elastic member provides an elastic restoring force through which the first card clamping plate and the second card clamping plate can be restored from an open position to an initial position.