Stackable Toolbox Access With Side-Opening Storage Boxes

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Solution Overview

Problem

Existing storage boxes require users to move upper items to access lower items, causing inconvenience when accessing or storing items.

Innovation Solution

A toolbox system with a first storage box featuring a traveling assembly, interlocking assemblies, and connectors that allow easy access to the accommodation cavity without disturbing upper items, and multiple storage boxes that can be stacked via interlocking mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If multiple storage boxes are stacked to transport more items, then the carrying capacity is improved, but the accessibility to lower items deteriorates because upper items block access

Engineering Contradiction:
Improvecarrying capacityVSAvoidaccessibility to items
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The storage box is divided into multiple independent compartments (first storage box, second storage box, third storage box) that can be accessed separately. Each storage box has its own opening and can be opened independently, allowing users to access items in lower compartments without moving upper compartments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The openings of the storage boxes are arranged in different spatial dimensions and orientations. The first storage box has an opening on its front sidewall, while the second and third storage boxes have openings on their upper top walls, allowing simultaneous or independent access to multiple compartments without interference.

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

2Productivity

If storage boxes are made stackable to increase transport efficiency, then the productivity is improved, but the device complexity increases due to interlocking mechanisms

Engineering Contradiction:
Improvetransport efficiencyVSAvoidinterlocking mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The interlocking assemblies are designed with universal functionality to connect different types of storage boxes (first, second, and third types) in various configurations. The same interlocking mechanism can stack boxes vertically or connect them side-by-side, reducing the need for multiple specialized connection mechanisms.

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

Solution Approach 2:

The interlocking assemblies are integrated into the structure of the storage boxes themselves, with connection features built into the box bodies. The interlocking mechanisms are nested within the box structures rather than being separate external components, simplifying the overall system.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of operation

If the opening is placed on the top of the box body, then the access to items is improved, but the stability of the storage box deteriorates when stacked

Engineering Contradiction:
Improveaccess to itemsVSAvoidstacking stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

Different storage boxes have openings positioned on different locations of their bodies based on their specific functions and stacking roles. The first storage box has its opening on the front sidewall, while the second and third storage boxes have openings on their upper top walls, optimizing both accessibility and stacking stability for each component.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4667166A1Toolbox system
Publication Date: 2025.12.24 NANJING CHERVON IND
  • EP4667166A1 patent drawingFigure 1
  • EP4667166A1 patent drawingFigure 2
  • EP4667166A1 patent drawingFigure 3

AI summary

Provided is a toolbox system. The toolbox system includes a first type of storage box including a box body formed with an accommodation cavity for storing an item. The toolbox system further includes a second type of storage box for storing the item; and at least one interlocking assembly, where the second type of storage box is connected to the first type of storage box through the at least one interlocking assembly. The first type of storage box further includes a traveling assembly connected to the box body and including at least one wheel; an opening capable of being opened to expose the accommodation cavity; and at least one first connector capable of mating with the opening to keep the opening in an open state or a closed state. The opening is disposed on a sidewall of the box body. Therefore, the toolbox system through which the user can easily take items out of the accommodation cavity or store items in the accommodation cavity can be provided.