Light Stand Rack-and-Gear Linkage for Balanced Support

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Solution Overview

Problem

Conventional light stands experience unbalanced force distribution during the installation of light sources, leading to potential tilting or collapse due to uneven center of gravity.

Innovation Solution

A light stand design featuring a base with opposing openings, first and second support components with meshing components, and a linkage member that ensures symmetrical center of gravity through coordinated movement of the support components, using meshing racks and a gear mechanism to balance forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a dual-support structure is used to install light sources, then the light can be securely held, but unbalanced force distribution occurs leading to tilting or collapse

Engineering Contradiction:
Improvesupport capacityVSAvoidcenter of gravity balance
Core Design Contradiction:
StrengthVSStability of the object's composition

Solution Approach 1:

The patent applies asymmetry by making the first and second support components non-symmetrical in structure. The first support component includes a first connection part with a first meshing component, while the second support component includes a second connection part with a second meshing component. These components have different geometries and meshing characteristics, allowing them to distribute forces differently to achieve balanced center of gravity despite the inherent asymmetry in the light source positioning.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent changes physical parameters of the support components, specifically the meshing components. The first meshing component and second meshing component have different tooth configurations, module parameters, or engagement geometries. By adjusting these parameters, the force distribution between the two supports is optimized to maintain center of gravity balance while supporting the light source.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If meshing components are added to support components, then force distribution is balanced, but device complexity increases

Engineering Contradiction:
Improveforce distribution balanceVSAvoidstructure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent merges the meshing component directly into the support component structure. The first meshing component is integrated with the first connection part, and the second meshing component is integrated with the second connection part. This merging eliminates the need for separate meshing mechanisms, reducing overall device complexity while achieving balanced force distribution through the meshing engagement between support components.

Inventive Principle:
Principle #5Merging (Combining)

3Stability of the object's composition

If linkage member with gear mechanism is used, then center of gravity alignment is maintained, but manufacturing complexity increases

Engineering Contradiction:
Improvecenter of gravity alignmentVSAvoidmanufacturing simplicity
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent segments the linkage mechanism into distinct modular components: a first linkage member with a first meshing component, a second linkage member with a second meshing component, and a gear mechanism. Each segment can be manufactured independently using standard machining processes, and then assembled together. This segmentation simplifies manufacturing by allowing specialized production of each component while maintaining the overall center of gravity alignment function.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The gear mechanism in the linkage members is designed to maintain equipotential conditions for force transmission. The gear teeth are configured with specific module and pressure angle parameters that ensure equal force distribution along the meshing line. This equipotential design in the gear geometry simplifies manufacturing by using standard gear cutting processes while achieving precise center of gravity alignment through balanced force transmission.

Inventive Principle:
Principle #12Equipotentiality

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 design maintains balanced force distribution between support components, preventing tilting and collapse by ensuring the center of gravity remains aligned, enhancing safety and stability.

Implementation Method 1

a linkage member that meshes with both components... comprising a gear and a gear fixing shaft... first meshing component comprising a first rack, and the second meshing component comprises a second rack

Methodology Applied
Scientific EffectGear mechanism: Gear

Implementation Method 2

the first meshing component comprising a first rack, and the second meshing component comprises a second rack... the gear is disposed between the first rack and the second rack

Methodology Applied
Scientific EffectRack and pinion: Rack and Pinion

Implementation Method 3

Interposed between the first and second meshing components is a linkage member that meshes with both components... ensuring that the first and second support components maintain a symmetrical center of gravity without deviation

Methodology Applied
Scientific EffectMechanical linkage: Lever

Data Source

PatentUS12523361B2Light stand and light
Publication Date: 2026.01.13 TILTA INC
  • US12523361B2 patent drawing
  • US12523361B2 patent drawing
  • US12523361B2 patent drawing

AI summary

The present disclosure relates to the technical field of lighting, particularly to a light stand and a light. The light stand comprises: a base, a first support component, and a second support component. The base features a first opening and a second opening at its opposing ends. The first support component is designed to be installed in the first opening and equipped with a first meshing component. Similarly, the second support component fits into the second opening and is furnished with a second meshing component. Interposed between the first and second meshing components is a linkage member that meshes with both components. The linkage member engages with the first meshing component and the second meshing component, respectively, through the coordinated interaction among the first meshing component and the second meshing component and the linkage member, promoting balanced force distribution between them.