Foldable Plastic Trolley With Inverted Front Wall

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Solution Overview

Problem

Existing collapsible container trolleys have limitations such as a loading opening on top, constrained geometry that restricts height to be less than length or width, lack of easy handling due to no castors, and incompatibility with all stores for pallet truck use.

Innovation Solution

A container trolley with all foldable walls, including a side loading wall, where at least one front wall folds over the outer side of the upper wall, allowing lateral loading and unloading, and featuring hinged panels for facilitated manipulation and storage, along with double action hinges and tenons for structural reinforcement, and castors for easy movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the container trolley uses a top loading opening with front walls bending from interior to exterior side, then loading and unloading can be performed, but articles block the front wall in the open position and prevent proper folding

Engineering Contradiction:

Improveloading and unloading operationVSAvoidfront wall folding position

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The front wall folding direction is inverted from the conventional interior-to-exterior side to exterior-to-interior side. This reversal allows the front wall to fold properly without being blocked by articles, while still enabling loading and unloading operations through the top opening.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The front wall is designed with dynamic folding capability that adapts its movement path based on the loading state. When articles are present, the front wall can still fold to the exterior side without obstruction, maintaining operational flexibility while resolving the blocking issue.

Inventive Principle:

Principle #15Dynamics

2Volume of moving object

If the container trolley walls are designed to fold with height greater than length or width, then greater storage capacity is achieved, but the side faces fold over more than half the base wall and collide

Engineering Contradiction:

Improvecontainer storage volumeVSAvoidwall folding geometry

Core Design Contradiction:

Volume of moving objectVSShape

Solution Approach 1:

The container trolley employs asymmetric wall folding mechanisms where different walls fold along different axes and at different angles. The lengthwise walls fold along the longitudinal axis while the widthwise walls fold along the transverse axis, preventing collision even when height exceeds length or width.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The folding mechanism utilizes three-dimensional spatial arrangement where walls fold in multiple dimensions rather than a single plane. This allows the container to achieve greater height without the side faces colliding, as they occupy different spatial zones during the folding process.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Device complexity

If the container trolley lacks castors for easy handling, then structural simplicity is maintained, but compatibility with all store setups is reduced

Engineering Contradiction:

Improvetrolley structureVSAvoidstore reception compatibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The container trolley base is designed with universal compatibility features that allow it to work with multiple types of store infrastructure including pallet trucks, forklifts, and manual handling systems. This multi-functionality approach provides adaptability without adding complex castor mechanisms.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables flexible dimension adaptation for packaging and transport, minimizes storage volume, and facilitates easy handling and stacking, while maintaining stability and compatibility with various store setups.

Implementation Method 1

at least one of the front walls is designed to be folded over the outer side of the upper wall

Methodology Applied

Scientific EffectHinge: Hinge

Implementation Method 2

castors for easy handling

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 3

The unloading of the articles is carried out by the opening of the base wall by gravity

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentEP3647154B1Foldable plastic trolley

Publication Date: 2023.05.24 THEGREENFLUX

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AI summary

Container trolley (1; 1000) designed to move from an unfolded position to a folded position and vice versa, comprising a base wall (60; 600), a top wall (50; 500), two front walls (10, 30; 100, 300), each movable in rotation about an axis parallel to the edge of the base wall (60; 600) along which it extends, and two side walls (20, 40; 200, 400), each movable in rotation about an axis parallel to the edge of the base wall (60; 600) along which it extends, each of the side walls (20, 40; 200, 400) being foldable into at least two elements (13, 14, 15, 16, 17, 18, 19, 21; 213, 214, 215, 216, 417, 418, 419, 421) characterized in that at least one of the front walls (10; 100) is designed to be folded down on the outside side of the upper wall (50; 500).