Modular Toolbox Assembly With Flexible Locking and Casters

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Solution Overview

Problem

Current toolbox assemblies are not aesthetically pleasing, lack structural sturdiness, are difficult to lock, and do not allow for flexible caster options or drawer interchangeability, leading to increased risk of theft and damage.

Innovation Solution

A toolbox assembly with a C-shaped trim member for aesthetic appeal, a selectively lockable design allowing doors to be locked with drawers open, and interchangeable drawers with adjustable casters and a locking mechanism that uses springs and bar members to secure latches, enhancing structural support and functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If traditional toolbox assemblies are used, then tools can be stored and retrieved, but the assemblies are not aesthetically pleasing and are not structurally sturdy

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidstructural sturdiness
Core Design Contradiction:
ShapeVSStrength

Solution Approach 1:

The toolbox assembly uses composite construction combining steel panels for structural strength with aesthetic trim members and finishing elements. The body comprises multiple steel panels (front, rear, side panels) that provide structural integrity while trim members attached to doors and edges enhance appearance, resolving the contradiction between aesthetic appearance and structural sturdiness.

Inventive Principle:
Principle #40Composite materials

2Reliability

If traditional locking mechanisms are used, then the toolbox can be locked, but it requires a relatively large amount of strength to move the locking mechanism and all drawers must be in a predetermined closed position

Engineering Contradiction:
Improvelocking securityVSAvoidlocking convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The locking system is segmented into individual drawer locks and a master locking mechanism. Each drawer can be locked independently with its own latch, while the master lock provides overall security. This segmentation allows drawers to be locked in different positions (open or closed) without requiring all drawers to be in a predetermined position, and reduces the force needed compared to a single complex locking mechanism.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locking mechanism incorporates springs that provide dynamic assistance for moving latches and locks. The spring-loaded latches automatically engage when drawers are closed and can be easily disengaged, reducing the manual force required. The system transitions between locked and unlocked states dynamically, allowing flexible locking of individual drawers or the entire assembly regardless of drawer positions.

Inventive Principle:
Principle #15Dynamics

3Reliability

If fixed casters are used in traditional toolbox assemblies, then the toolbox can be moved, but lighter casters increase breakage probability in harsh environments while heavier casters increase cost when not needed

Engineering Contradiction:
Improvecaster durabilityVSAvoidcaster selection flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The toolbox assembly incorporates adjustable and replaceable caster wheels that can be selected based on specific needs. The casters are attached to the bottom of the assembly in a manner that allows for different caster types (lightweight for indoor use, heavy-duty for harsh environments) to be installed depending on the operating conditions, providing both durability and flexibility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The caster mounting system is designed to accommodate universal caster attachments that can handle various load requirements. The same mounting structure supports both lightweight casters for normal conditions and heavy-duty casters for harsh environments, allowing the toolbox to adapt to different functional requirements without requiring multiple specialized mounting systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Adaptability or versatility

If fixed drawers are used in traditional toolbox assemblies, then the structure is simple, but drawers cannot be readily interchangeable to accommodate different storage strategies

Engineering Contradiction:
Improvedrawer interchangeabilityVSAvoidassembly complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The toolbox assembly is segmented into modular components with standardized interfaces. Drawers are designed as separate, interchangeable units that can be removed and replaced independently. The rails, guides, and mounting structures are standardized across different drawer positions, allowing users to reconfigure storage strategies by swapping drawers without complex disassembly, while maintaining overall structural simplicity through consistent design patterns.

Inventive Principle:
Principle #1Segmentation

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 toolbox assembly is both aesthetically pleasing and sturdy, allows for flexible storage strategies, and provides enhanced locking functionality, reducing the risk of theft and damage while accommodating different loads and environments.

Implementation Method 1

at least one spring member which is coupled to one of the plurality of locking members and to said bar member

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentUS8056995B2Toolbox assembly
Publication Date: 2011.11.15 GRELA LARRY MITCHELL
  • US8056995B2 patent drawing
  • US8056995B2 patent drawing
  • US8056995B2 patent drawing

AI summary

A toolbox assembly 10 which is adapted to allow material to be easily and securely stored and retrieved and which is aesthetically pleasing and structurally sound.