Rotating Key Holder Structure Without Flexible Tape Wear

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Solution Overview

Problem

Existing key storage devices suffer from reduced service life due to wear and damage of flexible adhesive tapes connecting the panels, leading to potential breakage.

Innovation Solution

A key storage device design featuring rotatable panels connected by a shaft lever, forming a storage space, with an elastic part to compress tools, and a limited post for secure storage, eliminating the need for flexible adhesive tapes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If two panels are connected through a flexible adhesive tape, then the panels can rotate relatively to allow key storage, but the flexible adhesive tape is prone to wear and plasticize over time, leading to damage or breakage

Engineering Contradiction:

Improvepanel rotation for key storageVSAvoidservice life of flexible adhesive tape

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent removes the flexible adhesive tape from the connection structure and replaces it with a shaft lever mechanism. This extraction of the problematic component eliminates the wear and plasticization issues while preserving the essential rotation function through the shaft lever and cambered surface design.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the flexible adhesive tape (a soft, deformable connection) with a shaft lever mechanism (a rigid, mechanical connection). This substitution provides a more durable and reliable connection that maintains the rotation function without the weaknesses of the adhesive tape.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If a shaft lever is used to connect panels, then durability and service life are improved, but the structure becomes more complex

Engineering Contradiction:

Improvedurability of connectionVSAvoidconnection structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the shaft lever, cambered surface, and rotation function into an integrated connection mechanism. The cambered surface is formed as part of the panel structure, and the shaft lever serves multiple functions (connection, rotation, and positioning), reducing the need for separate components and simplifying the overall structure.

Inventive Principle:

Principle #5Merging (Combining)

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 enhances durability, prolongs the product's service life by preventing wear and damage to rotating parts, while maintaining ease of use and production simplicity.

Implementation Method 1

an elastic part configured to compress the tools when the tools are stored by the key storage device

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

one end of the first panel is rotatably connected with one end of the second panel through a shaft lever

Methodology Applied

Scientific EffectMechanical rotation:

Data Source

PatentUS20260020644A1Key storage device

Publication Date: 2026.01.22 LIU ZHOUWEN

AI summary

A key storage device, includes a first panel, a second panel, a limited post and an elastic part. One end of the first panel is rotatably connected with one end of the second panel through a shaft lever, and a storage space for storing tools is formed between the first panel and the second panel. One end of the elastic part is arranged on the first panel or the second panel, one end of the limited post is connected to the second panel, the other end of the limited post is detachably arranged on the first panel, and the elastic part is configured to compress the tools when the tools are stored by the key storage device.