Telescopic Ladder Stabilizer With Locking Feet for Base Stability

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Solution Overview

Problem

Conventional ladders are prone to instability and falling due to their narrow base and unstable propping, posing a risk of toppling, which necessitates the development of a stabilizing solution to enhance safety and usability.

Innovation Solution

A ladder stabilizer system comprising a pair of side rails, fixed rung portions, and a stabilizer assembly with an extension bar, main arm, brace bar, teeth strips, and spring-loaded levers, which provides additional support and adjustable length to ensure secure contact with the floor, thereby enhancing stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a conventional ladder is used, then the structure is simple and easy to manufacture, but the stability is poor and the base is narrow causing toppling risk

Engineering Contradiction:
Improveladder stabilityVSAvoidstructure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The stabilizer is divided into multiple functional segments: main arm portion, extension bar portion, brace bar portion, teeth strips, and levers. This segmentation allows each component to perform its specific function while maintaining overall stability without requiring complete structural redesign of the ladder.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The stabilizer extends the ladder's support into a new spatial dimension by adding outward-projecting feet that contact the ground laterally. This dimensional expansion widens the effective base without increasing the ladder's vertical or horizontal footprint, thereby improving stability without proportional increase in complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If the stabilizer structure is added to improve stability, then the stability increases, but the device complexity and modification requirements increase

Engineering Contradiction:
Improvesafe useVSAvoidmodification ease
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The stabilizer incorporates telescopic functionality through the extension bar portion that can slide within the main arm portion, allowing the stabilizer length to adjust dynamically based on floor conditions. The spring-loaded levers with teeth strips provide automatic locking at various positions, enabling the structure to adapt to different scenarios while maintaining reliability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The extension bar portion is nested within the main arm portion, allowing the stabilizer to compact to a minimal size when not in use. This nesting arrangement reduces storage space requirements and simplifies attachment to the ladder while maintaining the full stabilizing capability when deployed.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Adaptability or versatility

If the stabilizer with fixed length is used, then the structure is simple, but the adaptability to different floor conditions and angles is limited

Engineering Contradiction:
ImproveadjustabilityVSAvoidstabilizer structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The stabilizer incorporates telescopic functionality through the extension bar portion that can slide within the main arm portion, allowing the stabilizer length to adjust dynamically based on floor conditions. The spring-loaded levers with teeth strips provide automatic locking at various positions, enabling the structure to adapt to different scenarios while maintaining reliability.

Inventive Principle:
Principle #15Dynamics

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 stabilizer system significantly increases the stability of ladders, allowing for secure use with minimal modifications to existing ladders and can be applied separately, providing a safer and more reliable climbing experience.

Implementation Method 1

Each of the pair of levers has a latching end and a releasing end, installed on the two side wall surfaces of the extension bar through two spring-loaded hinges, so that the latching end engages the teeth strip through a through-hole provided through the side wall surface of the extension bar portion, holding the telescopic connection in place with variant lengths.

Methodology Applied
Scientific EffectSpring-loaded mechanism: Spring

Data Source

PatentUS10988985B2Ladder
Publication Date: 2021.04.27 HYUNDAI ALUMINUM VINA SHAREHLDG CO
  • US10988985B2 patent drawing
  • US10988985B2 patent drawing
  • US10988985B2 patent drawing

AI summary

A ladder stabilizer is provided, comprising an extension bar portion, a main arm portion, a brace bar portion, teeth strips, and levers. The extension bar portion is enclosed by an outer wall surface, an inner wall surface, and two side wall surfaces, and having upper and lower end portions. The main arm portion has upper and lower end portions configured for a telescopic connection. The brace bar portion has first and second end portions, and the first end portion is connected to the side portion at a lower position, and the second end portion is connected to the extension bar portion at a middle position. The teeth strips are fixed to lower portions of the two side wall surfaces of the main arm portion. Each lever has latching and releasing ends, installed on the two side wall surfaces of the extension bar through two spring-loaded hinges.