Tripod Leg Collapse Prevention via Nested Locking

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Solution Overview

Problem

Existing tripods lack a mechanism to prevent collapse, which is essential for supporting heavy or sensitive objects that require stability and security, especially in varying environmental conditions.

Innovation Solution

The design incorporates upper and lower leg assemblies with a fixed width space, where the lower leg's second section is wider than the space, preventing movement and thus collapse, using cylindrical members with complementary channels and a tightener mechanism to secure the position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If nested leg segments are made movable for rapid deployment and height adjustment, then ease of operation is improved, but structural stability deteriorates and collapse risk increases

Engineering Contradiction:
Improveease of deploymentVSAvoidstructural stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The leg is divided into multiple nested segments (first leg assembly, second leg assembly, third leg assembly) that can move independently. Each segment contains internal locking mechanisms that engage with corresponding features on adjacent segments, allowing the leg to be segmented for compact storage and rapid deployment while maintaining structural integrity when locked in position.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The leg assemblies include pre-configured locking features and engagement surfaces that are prepared in advance. When segments are extended or retracted, the locking mechanisms automatically engage at predetermined positions, eliminating the need for manual locking operations and ensuring structural stability is established before the leg is fully deployed.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If leg segments are made adjustable for height variation and uneven surface accommodation, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveheight adjustmentVSAvoidmechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The leg employs a nested configuration where the second leg assembly is received within the first leg assembly, and the third leg assembly is received within the second leg assembly. This nested arrangement allows multiple segments to be stored compactly together while enabling independent extension and retraction of each segment for height adjustment and adaptation to uneven surfaces.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The leg assemblies are designed with movable and adjustable characteristics, allowing dynamic reconfiguration. Each segment can be extended, retracted, and locked at various positions to accommodate different height requirements and ground conditions, providing versatility without requiring entirely separate leg structures.

Inventive Principle:
Principle #15Dynamics

3Reliability

If locking mechanisms are added to prevent collapse and secure leg position, then reliability is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvecollapse preventionVSAvoidoperation speed
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The leg assemblies incorporate self-locking mechanisms that automatically engage when segments are extended to their desired positions. The locking features are designed to snap into place without requiring manual intervention, and the legs can be quickly released and repositioned by simply collapsing the segments, which forces the locking mechanisms to disengage automatically.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The locking and unlocking operations are designed to occur rapidly during the extension and retraction movements. The locking mechanisms engage almost immediately when segments reach their locked positions, and the entire locking/unlocking process is completed during the brief moment of segment movement, minimizing the time added to deployment and breakdown operations.

Inventive Principle:
Principle #21Skipping (Rushing through)

Data Source

PatentUS10281081B2Leg for an apparatus for supporting an object
Publication Date: 2019.05.07 OBERWERK CORP
  • US10281081B2 patent drawing
  • US10281081B2 patent drawing
  • US10281081B2 patent drawing

AI summary

An improved leg for an apparatus for supporting an object. The improved leg may be provided as at least one leg of a tripod for supporting an object, the tripod having a plurality of legs each having upper and lower leg assemblies that are arranged in moving relation with each other, wherein the at least one leg is configured to prevent that leg of the apparatus from collapsing.