Card Holder With Elastic Displacement Mechanism

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Solution Overview

Problem

Conventional card holders are inconvenient for carrying multiple cards due to limited space and difficulty in inserting and removing cards, and they often cause cards to fall out during use.

Innovation Solution

A card holder with a connecting device comprising two card clamping plates and elastic members that allow vertical displacement, creating a retractable space to accommodate cards of different sizes and preventing them from falling out.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a conventional card holder structure is used, then the structure is simple, but the internal space cannot expand to accommodate multiple cards of different sizes

Engineering Contradiction:

Improveinternal spaceVSAvoidstructure

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

The card holder employs a dynamic structure where the card holder plate can elastically displace relative to the connecting device. This allows the internal space to expand and contract based on the number and size of cards inserted, transforming a static structure into a dynamic one that adapts to different card configurations.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The card holder is divided into modular components: a card holder plate and a connecting device with elastic members. This segmentation allows independent movement and function of each component, enabling the internal space to expand while maintaining structural integrity through the modular design.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If multiple cards are stored in a compact card holder, then portability is improved, but cards are prone to falling out during carrying

Engineering Contradiction:

ImproveportabilityVSAvoidcard retention

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The elastic member provides a pre-established restoring force that acts against the tendency of cards to fall out. When cards are inserted and the card holder plate is displaced, the elastic member stores energy and exerts a restoring force that prevents excessive movement and potential card ejection during carrying.

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The elastic member acts as a cushioning element that absorbs and mitigates the impact of bumps and shocks during carrying. By providing elastic deformation and restoring force, it cushions the cards against forces that would otherwise cause them to fall out, preparing the structure in advance to handle unexpected movements.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Ease of operation

If cards are stored in a fixed-position card holder, then the structure is stable, but inserting and removing cards becomes inconvenient

Engineering Contradiction:

Improvecard insertion and removalVSAvoidstructural stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The card holder plate is designed to move dynamically relative to the connecting device during card insertion and removal operations. This controlled movement provides ease of operation by allowing cards to be smoothly inserted and removed, while the elastic restoring force ensures the structure returns to its stable position after each operation.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes its structural parameters (position of the card holder plate) during operation to facilitate card insertion and removal. The elastic member enables temporary parameter changes (displacement) that improve operability, while the restoring force ensures parameters return to their stable state after use.

Inventive Principle:

Principle #35Parameter changes

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 card holder provides a simple, durable, and space-efficient solution for carrying multiple cards, ensuring easy insertion and removal while preventing cards from falling out, thanks to its elastic displacement mechanism and blocking device.

Implementation Method 1

a first elastic member connected with each connecting member; the connecting device causes a variable displacement in a vertical direction between the first card clamping plate and the second card clamping plate to form a freely retractable internal space, thereby accommodating a plurality of cards; and wherein the first elastic member provides an elastic restoring force for the first card clamping plate and the second card clamping plate to respectively restore to an initial position

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11793283B1Card holder

Publication Date: 2023.10.24 SHENZHEN JIANGDA HARDWARE PROD CO LTD

AI summary

The present invention relates to a card holder including a card holder body. The card holder body includes a first card clamping plate and a second card clamping plate, and a connecting device is arranged between the first card clamping plate and the second card clamping plate to connect the first card clamping plate and the second card clamping plate; the connecting device causes a relative displacement in a vertical direction between the first card clamping plate and the second card clamping plate to form a freely retractable internal space, thereby accommodating a plurality of cards; and the connecting device includes two connecting members rotationally connected through a shaft, and a first elastic member connected with each connecting member. The first elastic member provides an elastic restoring force for the first card clamping plate and the second card clamping plate to respectively restore to an initial position.