Snap-Fit Container Wall Locking Mechanism for Reconfigurable Storage

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Solution Overview

Problem

Existing storage containers face issues with space inefficiency, limited accessibility, and structural integrity when storing smaller items, especially when larger containers are used, due to rigid designs and inadequate locking mechanisms.

Innovation Solution

A locking mechanism comprising three interconnectable elements - a first element with a latch, a second element with a protruding locking element, and a third element with a spring element - that allows side walls to collapse, pivot, or be removed, providing a tool-free, snap-fit design for secure closure and easy assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If rigid storage containers are used, then structural integrity is maintained, but space efficiency and flexibility are reduced

Engineering Contradiction:
Improvestructural integrityVSAvoidspace efficiency
Core Design Contradiction:
StrengthVSVolume of moving object

Solution Approach 1:

The container is divided into modular wall elements that can be independently connected and disconnected. Each wall element can be separately locked or unlocked, allowing the container to be configured in different states (fully assembled, partially disassembled, or completely broken down) while maintaining structural integrity when locked

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The container transitions from a static rigid structure to a dynamic reconfigurable system. The wall elements can move between locked (assembled) and unlocked (disassembled) states, enabling the container to adapt its volume and configuration based on storage needs while maintaining strength when locked

Inventive Principle:
Principle #15Dynamics

2Quantity of substance

If larger containers are used for smaller goods, then storage capacity is sufficient, but accessibility and space efficiency deteriorate

Engineering Contradiction:
Improvestorage capacityVSAvoidaccessibility
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The container can be segmented into smaller wall elements that can be removed or reconfigured to create access points. This allows users to easily access smaller goods stored in larger containers by disassembling specific sections rather than dealing with the entire rigid structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The container configuration can dynamically change to provide access. Wall elements can be quickly unlocked and removed to create openings for accessing stored goods, then relocked after use, transforming the container from a sealed structure to an accessible one

Inventive Principle:
Principle #15Dynamics

3Strength

If traditional locking mechanisms are used, then structural integrity is improved, but device complexity and ease of operation worsen

Engineering Contradiction:
Improvestructural integrityVSAvoidlocking mechanism complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The locking mechanism is designed to automatically engage and disengage without manual intervention. When wall elements are brought into contact, the locking elements automatically lock them together, eliminating the need for complex manual locking operations while maintaining strong connections

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Complex manual locking mechanisms are replaced with automatic snap-fit locking elements. The locking action is achieved through simple geometric interlocking and elastic deformation of the locking elements, eliminating the need for screws, bolts, or complex mechanical fasteners

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Strength

If manual locking steps are required, then structural integrity is ensured, but productivity and ease of operation are reduced

Engineering Contradiction:
Improvestructural integrityVSAvoidassembly speed
Core Design Contradiction:
StrengthVSProductivity

Solution Approach 1:

The locking mechanism performs the locking action automatically when wall elements are assembled. The locking elements engage themselves through simple contact and movement, eliminating manual locking steps and significantly speeding up assembly while maintaining strong connections

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The locking elements are pre-configured in the wall elements to automatically engage when the walls are brought into contact. This preliminary positioning ensures that locking occurs automatically during the assembly process itself, without requiring separate manual locking operations

Inventive Principle:
Principle #10Preliminary action

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 mechanism ensures reliable, tool-free assembly and disassembly, maintains structural integrity, and enhances space efficiency by allowing flexible configuration changes, facilitating easy access to the container's interior.

Implementation Method 1

a third element movably connected to the second element, the third element comprising at least one protruding locking element

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 2

the at least one protruding locking element is configured to automatically engage behind the latch to lock the first element to the second element when moving the side wall elements from the unlocked to the locked state

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4711297A1Locking mechanism and container comprising a locking mechanism
Publication Date: 2026.03.18 SMART FLOW EURO
  • EP4711297A1 patent drawingFigure 1A~2A
  • EP4711297A1 patent drawingFigure 2B~3A
  • EP4711297A1 patent drawingFigure 3B~3D

AI summary

A locking mechanism (100, 100') for releasably connecting two adjacent side wall elements (12, 14, 14a, 14b, 14c, 16, 18) of a container (1), wherein the locking mechanism (100, 100') comprising: - a first element (110, 110') connectable to a first side wall element, the first element (110, 110') comprising at least one latch (112); - a second element (120) connectable to a second side wall element, and - a third element (130) movably connected to the second element (120), the third element (130) comprising at least one protruding locking element (132), wherein the at least one protruding locking element (132) being configured to releasably connect with the at least one latch (112) to lock the first element (110, 110') with the second element (120) such that movement of the first side wall element relative to the second side wall element is prevented, wherein the at least one protruding locking element (132) is configured to automatically engage behind the latch (112) to lock the first element (110, 110') to the second element (120) when moving the side wall elements from the unlocked to the locked state.