Hinged Tool Storage Bag for Flat Access and Compact Packing

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Solution Overview

Problem

Existing tool storage devices lack user-friendly designs that allow for easy access and organization of tools while minimizing the overall size when closed, particularly for tools with varying shapes and sizes.

Innovation Solution

A tool bag with a flat base body divided into surface sections by hinges, allowing these sections to fold into a polygonal solid shape, using textile material for flexibility and plastic inserts for rigidity, with magnetic elements for secure closure and holders for tools that facilitate easy access and organization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the tool bag is designed to be flat and spread out for easy access to tools, then tool visibility and accessibility are improved, but the pack size and portability deteriorate

Engineering Contradiction:
Improvetool accessibilityVSAvoidpack size
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The base body is divided into multiple surface sections that can be independently folded relative to each other. This segmentation allows the bag to be deployed flat for tool access but collapsed into a compact polygonal solid for storage, resolving the contradiction between accessibility and pack size.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bag transitions from a static flat structure to a dynamic multi-state structure that can fold and unfold. The hinges enable the surface sections to move between deployed and collapsed positions, allowing the bag to adapt its volume based on operational needs.

Inventive Principle:
Principle #15Dynamics

2Stability of the object's composition

If the base body is made rigid to maintain shape, then structural stability is improved, but flexibility and adaptability to different surfaces deteriorate

Engineering Contradiction:
Improveshape stabilityVSAvoidsurface adaptability
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The base body is segmented into multiple surface sections connected by hinges. Each section can be folded independently, allowing the bag to adapt to different surface contours while maintaining structural stability when deployed flat.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The base body is constructed from flexible textile material that can conform to different surfaces. The flexibility of the textile material allows the bag to adapt to curved surfaces and various contours while maintaining its structural integrity when needed.

Inventive Principle:
Principle #30Flexible shells and thin films

3Ease of operation

If tools are arranged with gaps for easy grasping, then tool accessibility is improved, but space utilization and compactness deteriorate

Engineering Contradiction:
Improvetool graspingVSAvoidspace utilization
Core Design Contradiction:
Ease of operationVSQuantity of substance

Solution Approach 1:

Tools are arranged in a nested configuration where smaller tools can be placed in the gaps between larger tools. The holding devices are positioned to create gaps that accommodate smaller tools, maximizing space utilization while maintaining accessibility for grasping.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The tool arrangement utilizes three-dimensional space by positioning tools at different depths and angles within the bag. Tools are oriented to create gaps in multiple dimensions, allowing smaller tools to fit into the spaces between larger tools while maintaining ease of access.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 provides maximum tool visibility when open and minimal pack size when closed, with tools easily accessible and organized, suitable for various surfaces including curved ones, and featuring automatic unfolding upon opening.

Implementation Method 1

The insert plates can be magnetically equipped so that the opened device is held to a steel base by magnetic force.

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Implementation Method 2

The bars are bent, in particular bent by 90°, when the tool bag is closed. They then provide a spring force that causes the tool bag to unfold automatically when its closure is opened.

Methodology Applied
Scientific EffectSpring force: Spring

Data Source

PatentEP4219085B1Storage device for tools
Publication Date: 2025.08.20 WERA WERKZEUGE GMBH
  • EP4219085B1 patent drawingFigure 1~2
  • EP4219085B1 patent drawingFigure 3~4
  • EP4219085B1 patent drawingFigure 5~6

AI summary

The invention relates to a device with screw tools stored therein, having a textile inner surface (2) and a textile outer surface (3), wherein the device in a storage position forms the shape of a cuboid and in a tool removal position forms surface sections (18, 19, 20, 21, 22) extending into a plane, wherein a plurality of mounting holders (6) are attached to a surface section (19), onto which sockets (7) with different wrench sizes are mounted and a ratchet (13) is attached to the inner surface (2).