Dual-Pivot Light Shading Element for Guide-Free Blade Motion

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Solution Overview

Problem

Existing stage light fixtures face challenges with light shading elements that require guide components for blade movement, leading to increased resistance, potential jamming, and higher power requirements, hindering miniaturization and maintenance efficiency.

Innovation Solution

A light shading element with a dual-pivot mechanism, utilizing first and second driving mechanisms connected to pivot points on the same side of the shading blade, allowing smooth movement without additional guides, reducing structural damping and power needs, and enabling precise control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If guide components (guide slots and guide posts) are added to guide the light shading blade movement, then the blade movement guidance is improved, but the resistance to blade movement increases and jamming occurs

Engineering Contradiction:

Improveblade movement guidanceVSAvoidblade movement smoothness

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent removes the guide components (guide slots and guide posts) from the system entirely. Instead of adding guidance mechanisms, the invention relies on the dual-pivot connection structure itself to define the movement trajectory, thereby eliminating the resistance and jamming caused by guide components while maintaining controlled blade movement.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Rather than using guide components to constrain the blade movement path, the patent inverts the approach by using the pivot connections to inherently define the arcuate trajectory. The movement constraint is built into the connection geometry itself rather than being imposed by separate guide elements.

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of operation

If guide components are added to guide the light shading blade, then movement guidance is improved, but the power requirement for driving mechanisms increases

Engineering Contradiction:

Improveblade movement guidanceVSAvoiddriving mechanism power

Core Design Contradiction:

Ease of operationVSPower

Solution Approach 1:

By removing the guide components from the system, the patent eliminates the additional friction and resistance they introduce. This reduction in mechanical resistance directly lowers the power requirements for the driving mechanisms while maintaining precise blade movement control through the dual-pivot geometry.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of operation

If guide components are added to guide the light shading blade, then movement guidance is improved, but the device complexity and volume increase

Engineering Contradiction:

Improveblade movement guidanceVSAvoidstructure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent extracts and removes the guide components (guide slots, guide posts, and associated mounting structures) from the system. The blade movement guidance function is entirely transferred to the dual-pivot connection geometry, significantly simplifying the overall device structure and reducing component count.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The pivot connections serve multiple functions simultaneously: they provide rotational articulation for the blade, define the movement trajectory through their geometric arrangement, and eliminate the need for separate guide components. This multi-functionality reduces device complexity while maintaining guidance capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Ease of operation

If guide components are added to guide the light shading blade, then movement guidance is improved, but maintenance complexity increases

Engineering Contradiction:

Improveblade movement guidanceVSAvoidmaintenance complexity

Core Design Contradiction:

Ease of operationVSEase of repair

Solution Approach 1:

By removing the guide components from the system, the patent eliminates the maintenance requirements associated with these elements. There are no guide slots to clean, no guide posts to lubricate or replace, thereby reducing maintenance complexity while maintaining blade movement guidance through the dual-pivot structure.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12455063B1Light shading element and stage light fixture having same

Publication Date: 2025.10.28 GUANGZHOU HAOYANG ELECTRONICS CO LTD

AI summary

A light shading element includes a base plate having a light-transmitting hole, a light shading blade for at least partially blocking the light-transmitting hole, and first and second driving mechanisms pivotally connected to the light shading blade to drive its movement in a plane. The first and second driving mechanisms are pivotally connected to the light shading blade through a first pivot point and a second pivot point, respectively. The light shading blade is configured to selectively move close to and away from the light-transmitting hole to respectively block and unblock the light-transmitting hole. The first pivot point moves along an arcuate trajectory under driving of the first driving mechanism, and the second pivot point is capable of moving along another arcuate trajectory around the first pivot point under driving of the second driving mechanism, when the first pivot point is at any position along the arcuate trajectory.