Lighting Enclosure Sealing with Compression Strip

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing lighting enclosures face challenges in achieving uniform pressure distribution and long-term sealing effectiveness against water and dust, particularly in outdoor applications, due to the limitations of traditional gasket and sealant methods which require precise screw torque and can degrade over time.

Innovation Solution

A lighting enclosure design that incorporates a linear gasket inserted into a longitudinal groove element of the housing, with an outwardly bent edge element of the diffuser, and a compression strip inserted between the base of the edge element and an overhanging housing element, compressing the gasket to create a secure seal along the joint.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional gasket and sealant methods are used, then sealing is achieved, but uniform pressure distribution is difficult to achieve and sealing effectiveness deteriorates over time

Engineering Contradiction:

Improvesealing effectivenessVSAvoidlong-term sealing effectiveness

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The compression strip is designed to be compressible, allowing it to dynamically adjust and maintain uniform pressure distribution on the gasket over time. This dynamic compression capability ensures consistent sealing effectiveness even as other components age or settle, resolving the contradiction between achieving initial seal and maintaining long-term sealing effectiveness.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the pressure distribution parameter from non-uniform (traditional screw method) to uniform through the compression strip. By introducing a component specifically designed to distribute compression force evenly across the gasket, the sealing reliability is improved while maintaining durability over time.

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If traditional screw methods are used, then parts are joined, but precise torque control is required to achieve uniform pressure

Engineering Contradiction:

Improveuniform pressure distributionVSAvoidtorque control requirement

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The compression strip automatically distributes compression force uniformly across the gasket without requiring external torque control mechanisms. The strip's inherent compressibility allows it to self-adjust and equalize pressure distribution, eliminating the need for precise torque control during assembly while achieving uniform pressure distribution.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The compression strip acts as an intermediary component between the mounting elements and the gasket. It mediates the force transmission, converting point loads from screws into uniform distributed pressure on the gasket, thereby achieving manufacturing precision without complex torque control requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If sealant is applied, then sealing is achieved, but extended setting time is required

Engineering Contradiction:

Improveseal protectionVSAvoidsealant setting time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The invention extracts and eliminates the sealant component from the sealing system, replacing it with a mechanical compression-based sealing mechanism using the compression strip and gasket. This removes the time-consuming setting requirement while maintaining reliable seal protection through continuous mechanical compression.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention replaces the chemical sealing mechanism (sealant curing) with a mechanical sealing mechanism (compression strip applying continuous pressure on the gasket). This substitution eliminates the waiting time for chemical setting while providing immediate and maintainable seal protection through mechanical force.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This solution provides a reliable and durable seal against water and dust, maintaining protection levels even as the sealant ages, without the need for precise torque control and reduces the time required for the sealant to set, enhancing the IP rating performance.

Implementation Method 1

the compression strip would push the base of the edge element to further engage with the groove element, thus compressing the linear gasket by reducing the gap between the groove element and the edge element

Methodology Applied

Scientific EffectCompression: Compression

Data Source

PatentUS10627102B1Sealing linear edge of lighting enclosure against water and dust

Publication Date: 2020.04.21 EIKO GLOBAL LLC

AI summary

A lighting enclosure protected against water and dust is described. An example lighting enclosure comprises: a first elongated part comprising a longitudinal groove element; a second elongated part attached to the first elongated part, wherein the second elongated part comprises an outwardly bent longitudinal edge element engaged with the longitudinal groove element; a linear gasket inserted in a gap between the longitudinal groove element and the outwardly bent longitudinal edge element; and a compression strip inserted between a base of the outwardly bent longitudinal edge element and a longitudinal overhanging element of the first elongated part.