Scaffold Collapsible Base Automatic Locking Mechanism

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Solution Overview

Problem

Existing scaffolding systems face challenges in transitioning from a closed to an open state while maintaining compactness and ensuring safety, often requiring manual locking mechanisms that can be unreliable and cumbersome.

Innovation Solution

A scaffolding system with a pre-assembled collapsible base that automatically locks into an open position without needing operator gestures, utilizing sliding connections and automatic locking mechanisms to ensure stability and compactness in the closed state, and allowing for easy unlocking for safety reasons.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If manual locking mechanisms are used to secure the base in the open state, then the scaffolding system can be stabilized, but the ease of operation deteriorates due to cumbersome and potentially unreliable manual locking gestures

Engineering Contradiction:
ImprovestabilityVSAvoidease of operation
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The base automatically transitions from the closed state to the open state and self-locks without requiring manual intervention. The sliding connection between the first and second slide elements automatically engages the locking mechanism when the ladder assemblies are moved apart, eliminating the need for operator gestures and ensuring reliable stabilization.

Inventive Principle:
Principle #25Self-service

2Volume of moving object

If the base is designed to be compact in the closed state, then the volume is reduced, but the stability in the open state may be compromised

Engineering Contradiction:
ImprovevolumeVSAvoidstability
Core Design Contradiction:
Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The base is designed with dynamic characteristics, allowing it to transition between a compact closed state and a stabilized open state. The sliding connection enables the base to automatically expand to its functional configuration when the ladder assemblies are separated, providing stability only when needed while maintaining compactness during transport and storage.

Inventive Principle:
Principle #15Dynamics

3Reliability

If automatic locking mechanisms are implemented, then the reliability improves by eliminating manual locking errors, but the device complexity increases due to additional sliding connection components

Engineering Contradiction:
ImprovereliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking mechanism is merged with the sliding connection between the first and second slide elements. The same sliding movement that transitions the base from closed to open state also automatically engages the locking mechanism, combining two functions into a single integrated system rather than adding separate locking components.

Inventive Principle:
Principle #5Merging (Combining)

4Volume of moving object

If the base elements are folded down when the system is closed, then the compactness is improved, but the ease of manufacture deteriorates due to more complex folding mechanisms

Engineering Contradiction:
ImprovecompactnessVSAvoidease of manufacture
Core Design Contradiction:
Volume of moving objectVSEase of manufacture

Solution Approach 1:

The base is segmented into multiple elements (first base element, second base element, first and second slide elements) that can be independently manufactured and then assembled through the sliding connection. This segmentation allows each component to be produced using standard manufacturing processes without requiring complex integrated folding mechanisms.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3192942B1Scaffold comprising two sets of ladders kept spaced from one another by a pre-assembled collapsible base
Publication Date: 2018.09.19 TUBESCA COMABI
  • EP3192942B1 patent drawingFigure 1
  • EP3192942B1 patent drawingFigure 2~3
  • EP3192942B1 patent drawingFigure 4~5

AI summary

A scaffolding system (1) comprising two sets of ladders (10, 11) facing each other, arranged so as to be able to pass from a closed state, in which the two sets of ladders are close together, to an open state, in which the two sets of ladders are far apart, between the sets of ladders, a folding base (60) fixed to the sets of ladders and remaining in the plane (yz) occupied by the folding base in the open state, a first slide element (43) integral with the folding base, and a second slide element (62), cooperating with the first slide element, the first slide element passing from a first position relative to the second slide element, to a second position when the scaffolding system passes from the folded state to the open state, and a locking device (300) arranged to trigger a locking of the first slide element when said element reaches the second position.