Transport Container Lid Locking Device With Elastic Pivot Bracket

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Solution Overview

Problem

Existing lid locking devices for transport containers are complex to manufacture and exhibit low holding forces, making them unreliable for securely holding the lid in an open position during loading and unloading.

Innovation Solution

A lid locking device with a pivot bracket that undergoes elastic deformation between locking and transport positions, eliminating the need for additional components and reducing complexity while providing adjustable and reliable locking, using the pivot bracket as an elastic component.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional lid locking devices with multiple components (brackets, webs, springs) are used, then the lid can be held in open position, but the device complexity increases and manufacturing time increases

Engineering Contradiction:
Improvelid locking reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the locking element and pivot bracket into a single integrated component. The locking element is formed as one piece with the pivot bracket, eliminating the need for separate bracket webs, hinges, and locking springs found in traditional designs. This integration reduces the number of parts while maintaining the locking function through the elastic deformation of the integrated structure.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and eliminates unnecessary intermediate components (bracket webs, hinges, locking springs) from the traditional multi-component system. By removing these separate elements and retaining only the essential locking function, the design achieves simplicity while maintaining reliability through the elastic deformation mechanism of the integrated pivot bracket.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If traditional lid locking devices with multiple components are used, then the lid can be locked, but the manufacturing time increases due to assembly requirements

Engineering Contradiction:
Improvelocking reliabilityVSAvoidassembly time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The locking element and pivot bracket are manufactured as a single integrated component, eliminating the need for separate assembly steps for connecting brackets, webs, and springs. This integration directly reduces assembly time while maintaining locking reliability through the built-in elastic deformation mechanism.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If traditional lid locking devices with multiple components are used, then the lid can be held open, but the susceptibility to wear increases

Engineering Contradiction:
Improveholding forceVSAvoidwear susceptibility
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

By integrating the locking element and pivot bracket into one component, the patent eliminates the interfaces between separate parts where wear would occur. The single integrated structure has fewer contact surfaces and no separate moving parts that would generate wear, thereby reducing susceptibility to harmful factors while maintaining holding force.

Inventive Principle:
Principle #5Merging (Combining)

4Device complexity

If the pivot bracket is designed to undergo elastic deformation, then the locking mechanism becomes simpler, but the manufacturing precision requirements increase

Engineering Contradiction:
Improvedevice complexityVSAvoidmanufacturing precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent changes the physical state of the pivot bracket from rigid to elastically deformable. This parameter change allows the single integrated component to accommodate variations in manufacturing precision through its inherent flexibility, absorbing dimensional tolerances and reducing the stringency of precision requirements while maintaining the locking function.

Inventive Principle:
Principle #35Parameter changes

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 solution reduces manufacturing time, minimizes wear susceptibility, and ensures secure lid retention with minimal force, enhancing safety and ease of use during loading and unloading.

Implementation Method 1

at least the locking element causes at least a temporary elastic deformation of the pivot bracket when the lid locking device is moved between the locking position and the transport position

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP4640579A1Lid holding device for a transport container
Publication Date: 2025.10.29 PENN ELCOM LTD
  • EP4640579A1 patent drawingFigure 1
  • EP4640579A1 patent drawingFigure 2
  • EP4640579A1 patent drawingFigure 3a~3b

AI summary

The present invention relates to a lid locking device (4) for a transport container (1). The lid locking device (4) comprises at least one bearing unit (5), at least one guide unit (6), and at least one pivoting bracket (7). The lid locking device (4) is movable at least between a locking position and a transport position. Furthermore, the guide unit (6) comprises at least one detent element (10). In the locking position, the pivoting bracket (7) interacts with the detent element (10) such that the lid locking device (4) is held in the locking position. According to the invention, when the lid locking device (4) is moved between the locking position and the transport position, the detent element (10) causes at least a temporary elastic deformation of the pivoting bracket (7).