Stackable Storage Chest With Quick-Access Secondary Lid

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Solution Overview

Problem

Existing stackable storage container systems face challenges in providing easy access to the interior of stacked containers while maintaining secure stacking and mobility.

Innovation Solution

A chest with a main lid and a secondary lid system, where the secondary lid can pivot to allow access to the interior without opening the main lid, and a latch mechanism secures containers to the lids, enabling independent movement and stacking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a main lid is used to cover the interior storage volume, then the storage container is secure, but access to the interior requires opening the main lid which disrupts the stacked configuration

Engineering Contradiction:

ImproveAccess to interior storage volumeVSAvoidStacked container configuration

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The lid system is segmented into two independent lids: a main lid that remains closed to maintain stack stability, and a secondary lid that pivots open to provide access. This segmentation allows the access function to be separated from the structural integrity function, resolving the contradiction between ease of access and maintenance of stacked configuration.

Inventive Principle:

Principle #1Segmentation

2Stability of the object's composition

If containers are stacked securely using latch mechanisms, then stability is improved, but mobility and access become more difficult

Engineering Contradiction:

ImproveStacked container stabilityVSAvoidAccess to stacked containers

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The latch system is segmented into a container latch for securing containers to the main lid, and a secondary lid latch for securing the secondary lid. This allows the secondary lid to be accessed independently without disrupting the container-to-main-lid latch connection, maintaining stack stability while enabling easy access.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The secondary lid is designed to pivot between closed and open positions while remaining attached to the main lid through the secondary lid latch. This dynamic design allows the secondary lid to move independently for access while the main lid and container latch system remains static and secure, resolving the contradiction between stability and ease of operation.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260035145A1Chest with quick access cover

Publication Date: 2026.02.05 THE STANLEY WORKS (ISRAEL) LTD

AI summary

A stackable storage system is disclosed. The system includes a base storage container disposed on a wheeled cart, and one of more additional storage containers removably secured on top of the base container. A main lid is disposed on the storage container and is pivotable between a position in which is covers at least a portion of the interior storage volume and a position in which it does not cover the interior storage volume. The main lid has a main lid opening formed therethrough. A secondary lid is pivotable between a position in which it covers the opening and a second position in which it does not cover the opening to allow access to the interior storage volume via the opening while the main lid covers the interior storage volume.